ObjectReader (jackson-databind 2.13.0-rc1)

java.lang.Object
- com.fasterxml.jackson.core.TreeCodec
- - com.fasterxml.jackson.core.ObjectCodec
  - - com.fasterxml.jackson.databind.ObjectReader

All Implemented Interfaces:

com.fasterxml.jackson.core.Versioned, Serializable
```
public class ObjectReader
extends com.fasterxml.jackson.core.ObjectCodec
implements com.fasterxml.jackson.core.Versioned, Serializable
```
Builder object that can be used for per-serialization configuration of deserialization parameters, such as root type to use or object to update (instead of constructing new instance).
Uses "mutant factory" pattern so that instances are immutable (and thus fully thread-safe with no external synchronization); new instances are constructed for different configurations. Instances are initially constructed by ObjectMapper and can be reused, shared, cached; both because of thread-safety and because instances are relatively light-weight.
NOTE: this class is NOT meant as sub-classable (with Jackson 2.8 and above) by users. It is left as non-final mostly to allow frameworks that require bytecode generation for proxying and similar use cases, but there is no expecation that functionality should be extended by sub-classing.

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type	Field and Description
`protected DeserializationConfig`	`_config` General serialization configuration settings; while immutable, can use copy-constructor to create modified instances as necessary.
`protected DefaultDeserializationContext`	`_context` Blueprint instance of deserialization context; used for creating actual instance when needed.
`protected DataFormatReaders`	`_dataFormatReaders` Optional detector used for auto-detecting data format that byte-based input uses.
`protected InjectableValues`	`_injectableValues` Values that can be injected during deserialization, if any.
`protected JavaType`	`_jsonNodeType` Lazily resolved `JavaType` for `JsonNode`
`protected com.fasterxml.jackson.core.JsonFactory`	`_parserFactory` Factory used for constructing `JsonGenerator`s
`protected JsonDeserializer<Object>`	`_rootDeserializer` We may pre-fetch deserializer as soon as `_valueType` is known, and if so, reuse it afterwards.
`protected ConcurrentHashMap<JavaType,JsonDeserializer<Object>>`	`_rootDeserializers` Root-level cached deserializers.
`protected com.fasterxml.jackson.core.FormatSchema`	`_schema` When using data format that uses a schema, schema is passed to parser.
`protected boolean`	`_unwrapRoot` Flag that indicates whether root values are expected to be unwrapped or not
`protected Object`	`_valueToUpdate` Instance to update with data binding; if any.
`protected JavaType`	`_valueType` Declared type of value to instantiate during deserialization.

Constructor Summary

Constructors
Modifier	Constructor and Description
`protected`	`ObjectReader(ObjectMapper mapper, DeserializationConfig config)` Constructor used by `ObjectMapper` for initial instantiation
`protected`	`ObjectReader(ObjectMapper mapper, DeserializationConfig config, JavaType valueType, Object valueToUpdate, com.fasterxml.jackson.core.FormatSchema schema, InjectableValues injectableValues)` Constructor called when a root deserializer should be fetched based on other configuration.
`protected`	`ObjectReader(ObjectReader base, DeserializationConfig config)` Copy constructor used when modifying simple feature flags
`protected`	`ObjectReader(ObjectReader base, DeserializationConfig config, JavaType valueType, JsonDeserializer<Object> rootDeser, Object valueToUpdate, com.fasterxml.jackson.core.FormatSchema schema, InjectableValues injectableValues, DataFormatReaders dataFormatReaders)` Copy constructor used for building variations.
`protected`	`ObjectReader(ObjectReader base, com.fasterxml.jackson.core.JsonFactory f)`
`protected`	`ObjectReader(ObjectReader base, com.fasterxml.jackson.core.filter.TokenFilter filter)`

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`protected void`	`_assertNotNull(String paramName, Object src)`
`protected Object`	`_bind(com.fasterxml.jackson.core.JsonParser p, Object valueToUpdate)` Actual implementation of value reading+binding operation.
`protected Object`	`_bindAndClose(com.fasterxml.jackson.core.JsonParser p0)`
`protected JsonNode`	`_bindAndCloseAsTree(com.fasterxml.jackson.core.JsonParser p0)`
`protected <T> MappingIterator<T>`	`_bindAndReadValues(com.fasterxml.jackson.core.JsonParser p)`
`protected JsonNode`	`_bindAsTree(com.fasterxml.jackson.core.JsonParser p)`
`protected JsonNode`	`_bindAsTreeOrNull(com.fasterxml.jackson.core.JsonParser p)` Same as `_bindAsTree(com.fasterxml.jackson.core.JsonParser)` except end-of-input is reported by returning `null`, not "missing node"
`protected com.fasterxml.jackson.core.JsonParser`	`_considerFilter(com.fasterxml.jackson.core.JsonParser p, boolean multiValue)` Consider filter when creating JsonParser.
`protected Object`	`_detectBindAndClose(byte[] src, int offset, int length)`
`protected Object`	`_detectBindAndClose(DataFormatReaders.Match match, boolean forceClosing)`
`protected JsonNode`	`_detectBindAndCloseAsTree(InputStream in)`
`protected <T> MappingIterator<T>`	`_detectBindAndReadValues(DataFormatReaders.Match match, boolean forceClosing)`
`protected JsonDeserializer<Object>`	`_findRootDeserializer(DeserializationContext ctxt)` Method called to locate deserializer for the passed root-level value.
`protected JsonDeserializer<Object>`	`_findTreeDeserializer(DeserializationContext ctxt)`
`protected void`	`_initForMultiRead(DeserializationContext ctxt, com.fasterxml.jackson.core.JsonParser p)` Alternative to `_initForReading(com.fasterxml.jackson.databind.DeserializationContext, com.fasterxml.jackson.core.JsonParser)` used in cases where reading of multiple values means that we may or may not want to advance the stream, but need to do other initialization.
`protected com.fasterxml.jackson.core.JsonToken`	`_initForReading(DeserializationContext ctxt, com.fasterxml.jackson.core.JsonParser p)`
`protected InputStream`	`_inputStream(File f)`
`protected InputStream`	`_inputStream(URL src)`
`protected JavaType`	`_jsonNodeType()`
`protected ObjectReader`	`_new(ObjectReader base, DeserializationConfig config)` Overridable factory method called by various "withXxx()" methods
`protected ObjectReader`	`_new(ObjectReader base, DeserializationConfig config, JavaType valueType, JsonDeserializer<Object> rootDeser, Object valueToUpdate, com.fasterxml.jackson.core.FormatSchema schema, InjectableValues injectableValues, DataFormatReaders dataFormatReaders)` Overridable factory method called by various "withXxx()" methods
`protected ObjectReader`	`_new(ObjectReader base, com.fasterxml.jackson.core.JsonFactory f)` Overridable factory method called by various "withXxx()" methods
`protected <T> MappingIterator<T>`	`_newIterator(com.fasterxml.jackson.core.JsonParser p, DeserializationContext ctxt, JsonDeserializer<?> deser, boolean parserManaged)` Factory method used to create `MappingIterator` instances; either default, or custom subtype.
`protected JsonDeserializer<Object>`	`_prefetchRootDeserializer(JavaType valueType)` Method called to locate deserializer ahead of time, if permitted by configuration.
`protected void`	`_reportUndetectableSource(Object src)`
`protected void`	`_reportUnkownFormat(DataFormatReaders detector, DataFormatReaders.Match match)` Method called to indicate that format detection failed to detect format of given input
`protected void`	`_verifyNoTrailingTokens(com.fasterxml.jackson.core.JsonParser p, DeserializationContext ctxt, JavaType bindType)`
`protected void`	`_verifySchemaType(com.fasterxml.jackson.core.FormatSchema schema)`
`protected ObjectReader`	`_with(DeserializationConfig newConfig)`
`ObjectReader`	`at(com.fasterxml.jackson.core.JsonPointer pointer)` Convenience method to bind from `JsonPointer` `JsonPointerBasedFilter` is registered and will be used for parsing later.
`ObjectReader`	`at(String pointerExpr)` Convenience method to bind from `JsonPointer`.
`JsonNode`	`createArrayNode()`
`protected DefaultDeserializationContext`	`createDeserializationContext(com.fasterxml.jackson.core.JsonParser p)` Internal helper method called to create an instance of `DeserializationContext` for deserializing a single root value.
`protected DefaultDeserializationContext`	`createDummyDeserializationContext()`
`com.fasterxml.jackson.core.JsonParser`	`createNonBlockingByteArrayParser()` Factory method for constructing properly initialized `JsonParser` to read content using non-blocking (asynchronous) mode.
`JsonNode`	`createObjectNode()`
`com.fasterxml.jackson.core.JsonParser`	`createParser(byte[] content)` Factory method for constructing properly initialized `JsonParser` to read content from specified byte array.
`com.fasterxml.jackson.core.JsonParser`	`createParser(byte[] content, int offset, int len)` Factory method for constructing properly initialized `JsonParser` to read content from specified byte array.
`com.fasterxml.jackson.core.JsonParser`	`createParser(char[] content)` Factory method for constructing properly initialized `JsonParser` to read content from specified character array Parser is not managed (or "owned") by ObjectReader: caller is responsible for properly closing it once content reading is complete.
`com.fasterxml.jackson.core.JsonParser`	`createParser(char[] content, int offset, int len)` Factory method for constructing properly initialized `JsonParser` to read content from specified character array.
`com.fasterxml.jackson.core.JsonParser`	`createParser(DataInput content)` Factory method for constructing properly initialized `JsonParser` to read content using specified `DataInput`.
`com.fasterxml.jackson.core.JsonParser`	`createParser(File src)` Factory method for constructing properly initialized `JsonParser` to read content from specified `File`.
`com.fasterxml.jackson.core.JsonParser`	`createParser(InputStream in)` Factory method for constructing properly initialized `JsonParser` to read content using specified `InputStream`.
`com.fasterxml.jackson.core.JsonParser`	`createParser(Reader r)` Factory method for constructing properly initialized `JsonParser` to read content using specified `Reader`.
`com.fasterxml.jackson.core.JsonParser`	`createParser(String content)` Factory method for constructing properly initialized `JsonParser` to read content from specified String.
`com.fasterxml.jackson.core.JsonParser`	`createParser(URL src)` Factory method for constructing properly initialized `JsonParser` to read content from specified `File`.
`ObjectReader`	`forType(Class<?> valueType)` Method for constructing a new reader instance that is configured to data bind into specified type.
`ObjectReader`	`forType(JavaType valueType)` Method for constructing a new reader instance that is configured to data bind into specified type.
`ObjectReader`	`forType(com.fasterxml.jackson.core.type.TypeReference<?> valueTypeRef)` Method for constructing a new reader instance that is configured to data bind into specified type.
`ContextAttributes`	`getAttributes()`
`DeserializationConfig`	`getConfig()`
`com.fasterxml.jackson.core.JsonFactory`	`getFactory()`
`InjectableValues`	`getInjectableValues()`
`TypeFactory`	`getTypeFactory()`
`JavaType`	`getValueType()`
`boolean`	`isEnabled(DeserializationFeature f)`
`boolean`	`isEnabled(com.fasterxml.jackson.core.JsonParser.Feature f)`
`boolean`	`isEnabled(MapperFeature f)`
`boolean`	`isEnabled(com.fasterxml.jackson.core.StreamReadFeature f)`
`JsonNode`	`missingNode()`
`JsonNode`	`nullNode()`
`JsonNode`	`readTree(byte[] json)` Same as `readTree(InputStream)` except content read from passed-in byte array.
`JsonNode`	`readTree(byte[] json, int offset, int len)` Same as `readTree(InputStream)` except content read from passed-in byte array.
`JsonNode`	`readTree(DataInput src)` Same as `readTree(InputStream)` except content read using passed-in `DataInput`.
`JsonNode`	`readTree(InputStream src)` Method that reads content from given input source, using configuration of this reader, and binds it as JSON Tree.
`<T extends com.fasterxml.jackson.core.TreeNode> T`	`readTree(com.fasterxml.jackson.core.JsonParser p)` Convenience method that binds content read using given parser, using configuration of this reader, except that content is bound as JSON tree instead of configured root value type.
`JsonNode`	`readTree(Reader src)` Same as `readTree(InputStream)` except content accessed through passed-in `Reader`
`JsonNode`	`readTree(String json)` Same as `readTree(InputStream)` except content read from passed-in `String`
`<T> T`	`readValue(byte[] content)` Method that binds content read from given byte array, using configuration of this reader.
`<T> T`	`readValue(byte[] content, Class<T> valueType)` Same as `readValue(byte[])` except that target value type overridden as `valueType`
`<T> T`	`readValue(byte[] buffer, int offset, int length)` Method that binds content read from given byte array, using configuration of this reader.
`<T> T`	`readValue(byte[] buffer, int offset, int length, Class<T> valueType)` Same as `readValue(byte[],int,int)` except that target value type overridden as `valueType`
`<T> T`	`readValue(DataInput src)`
`<T> T`	`readValue(DataInput content, Class<T> valueType)` Same as `readValue(DataInput)` except that target value type overridden as `valueType`
`<T> T`	`readValue(File src)` Method that binds content read from given `File` using configuration of this reader.
`<T> T`	`readValue(File src, Class<T> valueType)` Same as `readValue(File)` except that target value type overridden as `valueType`
`<T> T`	`readValue(InputStream src)` Method that binds content read from given input source, using configuration of this reader.
`<T> T`	`readValue(InputStream src, Class<T> valueType)` Same as `readValue(InputStream)` except that target value type overridden as `valueType`
`<T> T`	`readValue(JsonNode content)` Convenience method for converting results from given JSON tree into given value type.
`<T> T`	`readValue(JsonNode content, Class<T> valueType)` Same as `readValue(JsonNode)` except that target value type overridden as `valueType`
`<T> T`	`readValue(com.fasterxml.jackson.core.JsonParser p)` Method that binds content read using given parser, using configuration of this reader, including expected result type.
`<T> T`	`readValue(com.fasterxml.jackson.core.JsonParser p, Class<T> valueType)` Convenience method that binds content read using given parser, using configuration of this reader, except that expected value type is specified with the call (instead of currently configured root type).
`<T> T`	`readValue(com.fasterxml.jackson.core.JsonParser p, JavaType valueType)` Type-safe overloaded method, basically alias for `readValue(JsonParser, ResolvedType)`.
`<T> T`	`readValue(com.fasterxml.jackson.core.JsonParser p, com.fasterxml.jackson.core.type.ResolvedType valueType)` Convenience method that binds content read using given parser, using configuration of this reader, except that expected value type is specified with the call (instead of currently configured root type).
`<T> T`	`readValue(com.fasterxml.jackson.core.JsonParser p, com.fasterxml.jackson.core.type.TypeReference<T> valueTypeRef)` Convenience method that binds content read using given parser, using configuration of this reader, except that expected value type is specified with the call (instead of currently configured root type).
`<T> T`	`readValue(Reader src)` Method that binds content read from given input source, using configuration of this reader.
`<T> T`	`readValue(Reader src, Class<T> valueType)` Same as `readValue(Reader)` except that target value type overridden as `valueType`
`<T> T`	`readValue(String src)` Method that binds content read from given JSON string, using configuration of this reader.
`<T> T`	`readValue(String src, Class<T> valueType)` Same as `readValue(String)` except that target value type overridden as `valueType`
`<T> T`	`readValue(URL src)` Method that binds content read from given input source, using configuration of this reader.
`<T> T`	`readValue(URL src, Class<T> valueType)` Same as `readValue(URL)` except that target value type overridden as `valueType`
`<T> MappingIterator<T>`	`readValues(byte[] src)` Overloaded version of `readValue(InputStream)`.
`<T> MappingIterator<T>`	`readValues(byte[] src, int offset, int length)` Overloaded version of `readValue(InputStream)`.
`<T> MappingIterator<T>`	`readValues(DataInput src)`
`<T> MappingIterator<T>`	`readValues(File src)` Overloaded version of `readValue(InputStream)`.
`<T> MappingIterator<T>`	`readValues(InputStream src)` Method for reading sequence of Objects from parser stream.
`<T> MappingIterator<T>`	`readValues(com.fasterxml.jackson.core.JsonParser p)` Method for reading sequence of Objects from parser stream.
`<T> Iterator<T>`	`readValues(com.fasterxml.jackson.core.JsonParser p, Class<T> valueType)` Convenience method that is equivalent to:
`<T> Iterator<T>`	`readValues(com.fasterxml.jackson.core.JsonParser p, JavaType valueType)` Convenience method that is equivalent to:
`<T> Iterator<T>`	`readValues(com.fasterxml.jackson.core.JsonParser p, com.fasterxml.jackson.core.type.ResolvedType valueType)` Convenience method that is equivalent to:
`<T> Iterator<T>`	`readValues(com.fasterxml.jackson.core.JsonParser p, com.fasterxml.jackson.core.type.TypeReference<T> valueTypeRef)` Convenience method that is equivalent to:
`<T> MappingIterator<T>`	`readValues(Reader src)` Overloaded version of `readValue(InputStream)`.
`<T> MappingIterator<T>`	`readValues(String json)` Overloaded version of `readValue(InputStream)`.
`<T> MappingIterator<T>`	`readValues(URL src)` Overloaded version of `readValue(InputStream)`.
`com.fasterxml.jackson.core.JsonParser`	`treeAsTokens(com.fasterxml.jackson.core.TreeNode n)`
`<T> T`	`treeToValue(com.fasterxml.jackson.core.TreeNode n, Class<T> valueType)`
`<T> T`	`treeToValue(com.fasterxml.jackson.core.TreeNode n, JavaType valueType)`
`com.fasterxml.jackson.core.Version`	`version()` Method that will return version information stored in and read from jar that contains this class.
`ObjectReader`	`with(com.fasterxml.jackson.core.Base64Variant defaultBase64)`
`ObjectReader`	`with(ContextAttributes attrs)`
`ObjectReader`	`with(DeserializationConfig config)` Mutant factory method that will construct a new instance that has specified underlying `DeserializationConfig`.
`ObjectReader`	`with(DeserializationFeature feature)` Method for constructing a new reader instance that is configured with specified feature enabled.
`ObjectReader`	`with(DeserializationFeature first, DeserializationFeature... other)` Method for constructing a new reader instance that is configured with specified features enabled.
`ObjectReader`	`with(com.fasterxml.jackson.core.FormatFeature feature)` Method for constructing a new reader instance that is configured with specified feature enabled.
`ObjectReader`	`with(com.fasterxml.jackson.core.FormatSchema schema)` Method for constructing a new instance with configuration that passes specified `FormatSchema` to `JsonParser` that is constructed for parsing content.
`ObjectReader`	`with(InjectableValues injectableValues)` Method for constructing a new instance with configuration that uses passed `InjectableValues` to provide injectable values.
`ObjectReader`	`with(com.fasterxml.jackson.core.JsonFactory f)` Method for constructing a new reader instance with configuration that uses passed `JsonFactory` for constructing underlying Readers.
`ObjectReader`	`with(JsonNodeFactory f)` Method for constructing a new reader instance with configuration that uses passed `JsonNodeFactory` for constructing `JsonNode` instances.
`ObjectReader`	`with(com.fasterxml.jackson.core.JsonParser.Feature feature)` Method for constructing a new reader instance that is configured with specified feature enabled.
`ObjectReader`	`with(Locale l)`
`ObjectReader`	`with(com.fasterxml.jackson.core.StreamReadFeature feature)` Method for constructing a new reader instance that is configured with specified feature enabled.
`ObjectReader`	`with(TimeZone tz)`
`ObjectReader`	`withAttribute(Object key, Object value)`
`ObjectReader`	`withAttributes(Map<?,?> attrs)`
`ObjectReader`	`withFeatures(DeserializationFeature... features)` Method for constructing a new reader instance that is configured with specified features enabled.
`ObjectReader`	`withFeatures(com.fasterxml.jackson.core.FormatFeature... features)` Method for constructing a new reader instance that is configured with specified features enabled.
`ObjectReader`	`withFeatures(com.fasterxml.jackson.core.JsonParser.Feature... features)` Method for constructing a new reader instance that is configured with specified features enabled.
`ObjectReader`	`withFormatDetection(DataFormatReaders readers)` Fluent factory method for constructing a reader that will try to auto-detect underlying data format, using specified `DataFormatReaders`.
`ObjectReader`	`withFormatDetection(ObjectReader... readers)` Fluent factory method for constructing a reader that will try to auto-detect underlying data format, using specified list of `JsonFactory` instances, and default `DataFormatReaders` settings (for customized `DataFormatReaders`, you can construct instance yourself).
`ObjectReader`	`withHandler(DeserializationProblemHandler h)`
`ObjectReader`	`without(DeserializationFeature feature)` Method for constructing a new reader instance that is configured with specified feature disabled.
`ObjectReader`	`without(DeserializationFeature first, DeserializationFeature... other)` Method for constructing a new reader instance that is configured with specified features disabled.
`ObjectReader`	`without(com.fasterxml.jackson.core.FormatFeature feature)` Method for constructing a new reader instance that is configured with specified feature disabled.
`ObjectReader`	`without(com.fasterxml.jackson.core.JsonParser.Feature feature)` Method for constructing a new reader instance that is configured with specified feature disabled.
`ObjectReader`	`without(com.fasterxml.jackson.core.StreamReadFeature feature)` Method for constructing a new reader instance that is configured with specified feature disabled.
`ObjectReader`	`withoutAttribute(Object key)`
`ObjectReader`	`withoutFeatures(DeserializationFeature... features)` Method for constructing a new reader instance that is configured with specified features disabled.
`ObjectReader`	`withoutFeatures(com.fasterxml.jackson.core.FormatFeature... features)` Method for constructing a new reader instance that is configured with specified features disabled.
`ObjectReader`	`withoutFeatures(com.fasterxml.jackson.core.JsonParser.Feature... features)` Method for constructing a new reader instance that is configured with specified features disabled.
`ObjectReader`	`withoutRootName()` Convenience method that is same as calling: `withRootName("")` which will forcibly prevent use of root name wrapping when writing values with this `ObjectReader`.
`ObjectReader`	`withRootName(PropertyName rootName)`
`ObjectReader`	`withRootName(String rootName)` Method for constructing a new instance with configuration that specifies what root name to expect for "root name unwrapping".
`ObjectReader`	`withType(Class<?> valueType)` Deprecated. since 2.5 Use `forType(Class)` instead
`ObjectReader`	`withType(JavaType valueType)` Deprecated. since 2.5 Use `forType(JavaType)` instead
`ObjectReader`	`withType(Type valueType)` Deprecated. since 2.5 Use `forType(Class)` instead
`ObjectReader`	`withType(com.fasterxml.jackson.core.type.TypeReference<?> valueTypeRef)` Deprecated. since 2.5 Use `forType(TypeReference)` instead
`ObjectReader`	`withValueToUpdate(Object value)` Method for constructing a new instance with configuration that updates passed Object (as root value), instead of constructing a new value.
`ObjectReader`	`withView(Class<?> activeView)` Method for constructing a new instance with configuration that uses specified View for filtering.
`void`	`writeTree(com.fasterxml.jackson.core.JsonGenerator g, com.fasterxml.jackson.core.TreeNode rootNode)`
`void`	`writeValue(com.fasterxml.jackson.core.JsonGenerator gen, Object value)`

Methods inherited from class com.fasterxml.jackson.core.ObjectCodec
getJsonFactory

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - _config
```
protected final DeserializationConfig _config
```
    General serialization configuration settings; while immutable, can use copy-constructor to create modified instances as necessary.
  - _context
```
protected final DefaultDeserializationContext _context
```
    Blueprint instance of deserialization context; used for creating actual instance when needed.
  - _parserFactory
```
protected final com.fasterxml.jackson.core.JsonFactory _parserFactory
```
    Factory used for constructing JsonGenerators
  - _unwrapRoot
```
protected final boolean _unwrapRoot
```
    Flag that indicates whether root values are expected to be unwrapped or not
  - _valueType
```
protected final JavaType _valueType
```
    Declared type of value to instantiate during deserialization. Defines which deserializer to use; as well as base type of instance to construct if an updatable value is not configured to be used (subject to changes by embedded type information, for polymorphic types). If _valueToUpdate is non-null, only used for locating deserializer.
  - _rootDeserializer
```
protected final JsonDeserializer<Object> _rootDeserializer
```
    We may pre-fetch deserializer as soon as _valueType is known, and if so, reuse it afterwards. This allows avoiding further deserializer lookups and increases performance a bit on cases where readers are reused.
    
    Since:
    
    2.1
  - _valueToUpdate
```
protected final Object _valueToUpdate
```
    Instance to update with data binding; if any. If null, a new instance is created, if non-null, properties of this value object will be updated instead. Note that value can be of almost any type, except not ArrayType; array types cannot be modified because array size is immutable.
  - _schema
```
protected final com.fasterxml.jackson.core.FormatSchema _schema
```
    When using data format that uses a schema, schema is passed to parser.
  - _injectableValues
```
protected final InjectableValues _injectableValues
```
    Values that can be injected during deserialization, if any.
  - _dataFormatReaders
```
protected final DataFormatReaders _dataFormatReaders
```
    Optional detector used for auto-detecting data format that byte-based input uses.
    NOTE: If defined non-null, readValue() methods that take Reader or String input will fail with exception, because format-detection only works on byte-sources. Also, if format cannot be detect reliably (as per detector settings), a StreamReadException will be thrown).
    
    Since:
    
    2.1
  - _rootDeserializers
```
protected final ConcurrentHashMap<JavaType,JsonDeserializer<Object>> _rootDeserializers
```
    Root-level cached deserializers. Passed by ObjectMapper, shared with it.
  - _jsonNodeType
```
protected transient JavaType _jsonNodeType
```
    Lazily resolved JavaType for JsonNode
- Constructor Detail
  - ObjectReader
```
protected ObjectReader(ObjectMapper mapper,
                       DeserializationConfig config)
```
    Constructor used by ObjectMapper for initial instantiation
  - ObjectReader
```
protected ObjectReader(ObjectMapper mapper,
                       DeserializationConfig config,
                       JavaType valueType,
                       Object valueToUpdate,
                       com.fasterxml.jackson.core.FormatSchema schema,
                       InjectableValues injectableValues)
```
    Constructor called when a root deserializer should be fetched based on other configuration.
  - ObjectReader
```
protected ObjectReader(ObjectReader base,
                       DeserializationConfig config,
                       JavaType valueType,
                       JsonDeserializer<Object> rootDeser,
                       Object valueToUpdate,
                       com.fasterxml.jackson.core.FormatSchema schema,
                       InjectableValues injectableValues,
                       DataFormatReaders dataFormatReaders)
```
    Copy constructor used for building variations.
  - ObjectReader
```
protected ObjectReader(ObjectReader base,
                       DeserializationConfig config)
```
    Copy constructor used when modifying simple feature flags
  - ObjectReader
```
protected ObjectReader(ObjectReader base,
                       com.fasterxml.jackson.core.JsonFactory f)
```
  - ObjectReader
```
protected ObjectReader(ObjectReader base,
                       com.fasterxml.jackson.core.filter.TokenFilter filter)
```
- Method Detail
  - version
```
public com.fasterxml.jackson.core.Version version()
```
    Method that will return version information stored in and read from jar that contains this class.
    
    Specified by:
    
    version in interface com.fasterxml.jackson.core.Versioned
    
    Specified by:
    
    version in class com.fasterxml.jackson.core.ObjectCodec
  - _new
```
protected ObjectReader _new(ObjectReader base,
                            com.fasterxml.jackson.core.JsonFactory f)
```
    Overridable factory method called by various "withXxx()" methods
    
    Since:
    
    2.5
  - _new
```
protected ObjectReader _new(ObjectReader base,
                            DeserializationConfig config)
```
    Overridable factory method called by various "withXxx()" methods
    
    Since:
    
    2.5
  - _new
```
protected ObjectReader _new(ObjectReader base,
                            DeserializationConfig config,
                            JavaType valueType,
                            JsonDeserializer<Object> rootDeser,
                            Object valueToUpdate,
                            com.fasterxml.jackson.core.FormatSchema schema,
                            InjectableValues injectableValues,
                            DataFormatReaders dataFormatReaders)
```
    Overridable factory method called by various "withXxx()" methods
    
    Since:
    
    2.5
  - _newIterator
```
protected <T> MappingIterator<T> _newIterator(com.fasterxml.jackson.core.JsonParser p,
                                              DeserializationContext ctxt,
                                              JsonDeserializer<?> deser,
                                              boolean parserManaged)
```
    Factory method used to create MappingIterator instances; either default, or custom subtype.
    
    Since:
    
    2.5
  - _initForReading
```
protected com.fasterxml.jackson.core.JsonToken _initForReading(DeserializationContext ctxt,
                                                               com.fasterxml.jackson.core.JsonParser p)
                                                        throws IOException
```
    Throws:
    
    IOException
  - _initForMultiRead
```
protected void _initForMultiRead(DeserializationContext ctxt,
                                 com.fasterxml.jackson.core.JsonParser p)
                          throws IOException
```
    Alternative to _initForReading(com.fasterxml.jackson.databind.DeserializationContext, com.fasterxml.jackson.core.JsonParser) used in cases where reading of multiple values means that we may or may not want to advance the stream, but need to do other initialization.
    Base implementation only sets configured FormatSchema, if any, on parser.
    
    Throws:
    
    IOException
    
    Since:
    
    2.8
  - with
```
public ObjectReader with(DeserializationFeature feature)
```
    Method for constructing a new reader instance that is configured with specified feature enabled.
  - with
```
public ObjectReader with(DeserializationFeature first,
                         DeserializationFeature... other)
```
    Method for constructing a new reader instance that is configured with specified features enabled.
  - withFeatures
```
public ObjectReader withFeatures(DeserializationFeature... features)
```
    Method for constructing a new reader instance that is configured with specified features enabled.
  - without
```
public ObjectReader without(DeserializationFeature feature)
```
    Method for constructing a new reader instance that is configured with specified feature disabled.
  - without
```
public ObjectReader without(DeserializationFeature first,
                            DeserializationFeature... other)
```
    Method for constructing a new reader instance that is configured with specified features disabled.
  - withoutFeatures
```
public ObjectReader withoutFeatures(DeserializationFeature... features)
```
    Method for constructing a new reader instance that is configured with specified features disabled.
  - with
```
public ObjectReader with(com.fasterxml.jackson.core.JsonParser.Feature feature)
```
    Method for constructing a new reader instance that is configured with specified feature enabled.
    
    Parameters:
    
    feature - Feature to enable
    
    Returns:
    
    Reader instance with specified feature enabled
  - withFeatures
```
public ObjectReader withFeatures(com.fasterxml.jackson.core.JsonParser.Feature... features)
```
    Method for constructing a new reader instance that is configured with specified features enabled.
    
    Parameters:
    
    features - Features to enable
    
    Returns:
    
    Reader instance with specified features enabled
  - without
```
public ObjectReader without(com.fasterxml.jackson.core.JsonParser.Feature feature)
```
    Method for constructing a new reader instance that is configured with specified feature disabled.
    
    Parameters:
    
    feature - Feature to disable
    
    Returns:
    
    Reader instance with specified feature disabled
  - withoutFeatures
```
public ObjectReader withoutFeatures(com.fasterxml.jackson.core.JsonParser.Feature... features)
```
    Method for constructing a new reader instance that is configured with specified features disabled.
    
    Parameters:
    
    features - Features to disable
    
    Returns:
    
    Reader instance with specified features disabled
  - with
```
public ObjectReader with(com.fasterxml.jackson.core.StreamReadFeature feature)
```
    Method for constructing a new reader instance that is configured with specified feature enabled.
    
    Returns:
    
    Reader instance with specified feature enabled
    
    Since:
    
    2.11
  - without
```
public ObjectReader without(com.fasterxml.jackson.core.StreamReadFeature feature)
```
    Method for constructing a new reader instance that is configured with specified feature disabled.
    
    Returns:
    
    Reader instance with specified feature enabled
    
    Since:
    
    2.11
  - with
```
public ObjectReader with(com.fasterxml.jackson.core.FormatFeature feature)
```
    Method for constructing a new reader instance that is configured with specified feature enabled.
    
    Since:
    
    2.7
  - withFeatures
```
public ObjectReader withFeatures(com.fasterxml.jackson.core.FormatFeature... features)
```
    Method for constructing a new reader instance that is configured with specified features enabled.
    
    Since:
    
    2.7
  - without
```
public ObjectReader without(com.fasterxml.jackson.core.FormatFeature feature)
```
    Method for constructing a new reader instance that is configured with specified feature disabled.
    
    Since:
    
    2.7
  - withoutFeatures
```
public ObjectReader withoutFeatures(com.fasterxml.jackson.core.FormatFeature... features)
```
    Method for constructing a new reader instance that is configured with specified features disabled.
    
    Since:
    
    2.7
  - at
```
public ObjectReader at(String pointerExpr)
```
    Convenience method to bind from JsonPointer. JsonPointerBasedFilter is registered and will be used for parsing later.
    
    Since:
    
    2.6
  - at
```
public ObjectReader at(com.fasterxml.jackson.core.JsonPointer pointer)
```
    Convenience method to bind from JsonPointer JsonPointerBasedFilter is registered and will be used for parsing later.
    
    Since:
    
    2.6
  - with
```
public ObjectReader with(DeserializationConfig config)
```
    Mutant factory method that will construct a new instance that has specified underlying DeserializationConfig.
    NOTE: use of this method is not recommended, as there are many other re-configuration methods available.
  - with
```
public ObjectReader with(InjectableValues injectableValues)
```
    Method for constructing a new instance with configuration that uses passed InjectableValues to provide injectable values.
    Note that the method does NOT change state of this reader, but rather construct and returns a newly configured instance.
  - with
```
public ObjectReader with(JsonNodeFactory f)
```
    Method for constructing a new reader instance with configuration that uses passed JsonNodeFactory for constructing JsonNode instances.
    Note that the method does NOT change state of this reader, but rather construct and returns a newly configured instance.
  - with
```
public ObjectReader with(com.fasterxml.jackson.core.JsonFactory f)
```
    Method for constructing a new reader instance with configuration that uses passed JsonFactory for constructing underlying Readers.
    NOTE: only factories that DO NOT REQUIRE SPECIAL MAPPERS (that is, ones that return false for JsonFactory.requiresCustomCodec()) can be used: trying to use one that requires custom codec will throw exception
    
    Since:
    
    2.1
  - withRootName
```
public ObjectReader withRootName(String rootName)
```
    Method for constructing a new instance with configuration that specifies what root name to expect for "root name unwrapping". See MapperConfigBase.withRootName(String) for details.
    Note that the method does NOT change state of this reader, but rather construct and returns a newly configured instance.
  - withRootName
```
public ObjectReader withRootName(PropertyName rootName)
```
    Since:
    
    2.6
  - withoutRootName
```
public ObjectReader withoutRootName()
```
    Convenience method that is same as calling: withRootName("") which will forcibly prevent use of root name wrapping when writing values with this ObjectReader.
    
    Since:
    
    2.6
  - with
```
public ObjectReader with(com.fasterxml.jackson.core.FormatSchema schema)
```
    Method for constructing a new instance with configuration that passes specified FormatSchema to JsonParser that is constructed for parsing content.
    Note that the method does NOT change state of this reader, but rather construct and returns a newly configured instance.
  - forType
```
public ObjectReader forType(JavaType valueType)
```
    Method for constructing a new reader instance that is configured to data bind into specified type.
    Note that the method does NOT change state of this reader, but rather construct and returns a newly configured instance.
    
    Since:
    
    2.5
  - forType
```
public ObjectReader forType(Class<?> valueType)
```
    Method for constructing a new reader instance that is configured to data bind into specified type.
    Note that the method does NOT change state of this reader, but rather construct and returns a newly configured instance.
    
    Since:
    
    2.5
  - forType
```
public ObjectReader forType(com.fasterxml.jackson.core.type.TypeReference<?> valueTypeRef)
```
    Method for constructing a new reader instance that is configured to data bind into specified type.
    Note that the method does NOT change state of this reader, but rather construct and returns a newly configured instance.
    
    Since:
    
    2.5
  - withType
```
@Deprecated
public ObjectReader withType(JavaType valueType)
```
    Deprecated. since 2.5 Use forType(JavaType) instead
  - withType
```
@Deprecated
public ObjectReader withType(Class<?> valueType)
```
    Deprecated. since 2.5 Use forType(Class) instead
  - withType
```
@Deprecated
public ObjectReader withType(Type valueType)
```
    Deprecated. since 2.5 Use forType(Class) instead
  - withType
```
@Deprecated
public ObjectReader withType(com.fasterxml.jackson.core.type.TypeReference<?> valueTypeRef)
```
    Deprecated. since 2.5 Use forType(TypeReference) instead
  - withValueToUpdate
```
public ObjectReader withValueToUpdate(Object value)
```
    Method for constructing a new instance with configuration that updates passed Object (as root value), instead of constructing a new value.
    Note that the method does NOT change state of this reader, but rather construct and returns a newly configured instance.
  - withView
```
public ObjectReader withView(Class<?> activeView)
```
    Method for constructing a new instance with configuration that uses specified View for filtering.
    Note that the method does NOT change state of this reader, but rather construct and returns a newly configured instance.
  - with
```
public ObjectReader with(Locale l)
```
  - with
```
public ObjectReader with(TimeZone tz)
```
  - withHandler
```
public ObjectReader withHandler(DeserializationProblemHandler h)
```
  - with
```
public ObjectReader with(com.fasterxml.jackson.core.Base64Variant defaultBase64)
```
  - withFormatDetection
```
public ObjectReader withFormatDetection(ObjectReader... readers)
```
    Fluent factory method for constructing a reader that will try to auto-detect underlying data format, using specified list of JsonFactory instances, and default DataFormatReaders settings (for customized DataFormatReaders, you can construct instance yourself). to construct appropriate JsonParser for actual parsing.
    Note: since format detection only works with byte sources, it is possible to get a failure from some 'readValue()' methods. Also, if input cannot be reliably (enough) detected as one of specified types, an exception will be thrown.
    Note: not all JsonFactory types can be passed: specifically, ones that require "custom codec" (like XML factory) will not work. Instead, use method that takes ObjectReader instances instead of factories.
    
    Parameters:
    
    readers - Data formats accepted, in decreasing order of priority (that is, matches checked in listed order, first match wins)
    
    Returns:
    
    Newly configured writer instance
    
    Since:
    
    2.1
  - withFormatDetection
```
public ObjectReader withFormatDetection(DataFormatReaders readers)
```
    Fluent factory method for constructing a reader that will try to auto-detect underlying data format, using specified DataFormatReaders.
    NOTE: since format detection only works with byte sources, it is possible to get a failure from some 'readValue()' methods. Also, if input cannot be reliably (enough) detected as one of specified types, an exception will be thrown.
    
    Parameters:
    
    readers - DataFormatReaders to use for detecting underlying format.
    
    Returns:
    
    Newly configured writer instance
    
    Since:
    
    2.1
  - with
```
public ObjectReader with(ContextAttributes attrs)
```
    Since:
    
    2.3
  - withAttributes
```
public ObjectReader withAttributes(Map<?,?> attrs)
```
    Since:
    
    2.3
  - withAttribute
```
public ObjectReader withAttribute(Object key,
                                  Object value)
```
    Since:
    
    2.3
  - withoutAttribute
```
public ObjectReader withoutAttribute(Object key)
```
    Since:
    
    2.3
  - _with
```
protected ObjectReader _with(DeserializationConfig newConfig)
```
  - isEnabled
```
public boolean isEnabled(DeserializationFeature f)
```
  - isEnabled
```
public boolean isEnabled(MapperFeature f)
```
  - isEnabled
```
public boolean isEnabled(com.fasterxml.jackson.core.JsonParser.Feature f)
```
  - isEnabled
```
public boolean isEnabled(com.fasterxml.jackson.core.StreamReadFeature f)
```
    Since:
    
    2.11
  - getConfig
```
public DeserializationConfig getConfig()
```
    Since:
    
    2.2
  - getFactory
```
public com.fasterxml.jackson.core.JsonFactory getFactory()
```
    Overrides:
    
    getFactory in class com.fasterxml.jackson.core.ObjectCodec
    
    Since:
    
    2.1
  - getTypeFactory
```
public TypeFactory getTypeFactory()
```
  - getAttributes
```
public ContextAttributes getAttributes()
```
    Since:
    
    2.3
  - getInjectableValues
```
public InjectableValues getInjectableValues()
```
    Since:
    
    2.6
  - getValueType
```
public JavaType getValueType()
```
    Since:
    
    2.10
  - createParser
```
public com.fasterxml.jackson.core.JsonParser createParser(File src)
                                                   throws IOException
```
    Factory method for constructing properly initialized JsonParser to read content from specified File. Parser is not managed (or "owned") by ObjectReader: caller is responsible for properly closing it once content reading is complete.
    
    Throws:
    
    IOException
    
    Since:
    
    2.11
  - createParser
```
public com.fasterxml.jackson.core.JsonParser createParser(URL src)
                                                   throws IOException
```
    Factory method for constructing properly initialized JsonParser to read content from specified File. Parser is not managed (or "owned") by ObjectReader: caller is responsible for properly closing it once content reading is complete.
    
    Throws:
    
    IOException
    
    Since:
    
    2.11
  - createParser
```
public com.fasterxml.jackson.core.JsonParser createParser(InputStream in)
                                                   throws IOException
```
    Factory method for constructing properly initialized JsonParser to read content using specified InputStream. Parser is not managed (or "owned") by ObjectReader: caller is responsible for properly closing it once content reading is complete.
    
    Throws:
    
    IOException
    
    Since:
    
    2.11
  - createParser
```
public com.fasterxml.jackson.core.JsonParser createParser(Reader r)
                                                   throws IOException
```
    Factory method for constructing properly initialized JsonParser to read content using specified Reader. Parser is not managed (or "owned") by ObjectReader: caller is responsible for properly closing it once content reading is complete.
    
    Throws:
    
    IOException
    
    Since:
    
    2.11
  - createParser
```
public com.fasterxml.jackson.core.JsonParser createParser(byte[] content)
                                                   throws IOException
```
    Factory method for constructing properly initialized JsonParser to read content from specified byte array. Parser is not managed (or "owned") by ObjectReader: caller is responsible for properly closing it once content reading is complete.
    
    Throws:
    
    IOException
    
    Since:
    
    2.11
  - createParser
```
public com.fasterxml.jackson.core.JsonParser createParser(byte[] content,
                                                          int offset,
                                                          int len)
                                                   throws IOException
```
    Factory method for constructing properly initialized JsonParser to read content from specified byte array. Parser is not managed (or "owned") by ObjectReader: caller is responsible for properly closing it once content reading is complete.
    
    Throws:
    
    IOException
    
    Since:
    
    2.11
  - createParser
```
public com.fasterxml.jackson.core.JsonParser createParser(String content)
                                                   throws IOException
```
    Factory method for constructing properly initialized JsonParser to read content from specified String. Parser is not managed (or "owned") by ObjectReader: caller is responsible for properly closing it once content reading is complete.
    
    Throws:
    
    IOException
    
    Since:
    
    2.11
  - createParser
```
public com.fasterxml.jackson.core.JsonParser createParser(char[] content)
                                                   throws IOException
```
    Factory method for constructing properly initialized JsonParser to read content from specified character array Parser is not managed (or "owned") by ObjectReader: caller is responsible for properly closing it once content reading is complete.
    
    Throws:
    
    IOException
    
    Since:
    
    2.11
  - createParser
```
public com.fasterxml.jackson.core.JsonParser createParser(char[] content,
                                                          int offset,
                                                          int len)
                                                   throws IOException
```
    Factory method for constructing properly initialized JsonParser to read content from specified character array. Parser is not managed (or "owned") by ObjectReader: caller is responsible for properly closing it once content reading is complete.
    
    Throws:
    
    IOException
    
    Since:
    
    2.11
  - createParser
```
public com.fasterxml.jackson.core.JsonParser createParser(DataInput content)
                                                   throws IOException
```
    Factory method for constructing properly initialized JsonParser to read content using specified DataInput. Parser is not managed (or "owned") by ObjectReader: caller is responsible for properly closing it once content reading is complete.
    
    Throws:
    
    IOException
    
    Since:
    
    2.11
  - createNonBlockingByteArrayParser
```
public com.fasterxml.jackson.core.JsonParser createNonBlockingByteArrayParser()
                                                                       throws IOException
```
    Factory method for constructing properly initialized JsonParser to read content using non-blocking (asynchronous) mode. Parser is not managed (or "owned") by ObjectReader: caller is responsible for properly closing it once content reading is complete.
    
    Throws:
    
    IOException
    
    Since:
    
    2.11
  - readValue
```
public <T> T readValue(com.fasterxml.jackson.core.JsonParser p)
                throws IOException
```
    Method that binds content read using given parser, using configuration of this reader, including expected result type. Value return is either newly constructed, or root value that was specified with withValueToUpdate(Object).
    NOTE: this method never tries to auto-detect format, since actual (data-format specific) parser is given.
    
    Throws:
    
    IOException
  - readValue
```
public <T> T readValue(com.fasterxml.jackson.core.JsonParser p,
                       Class<T> valueType)
                throws IOException
```
    Convenience method that binds content read using given parser, using configuration of this reader, except that expected value type is specified with the call (instead of currently configured root type). Value return is either newly constructed, or root value that was specified with withValueToUpdate(Object).
    NOTE: this method never tries to auto-detect format, since actual (data-format specific) parser is given.
    
    Specified by:
    
    readValue in class com.fasterxml.jackson.core.ObjectCodec
    
    Throws:
    
    IOException
  - readValue
```
public <T> T readValue(com.fasterxml.jackson.core.JsonParser p,
                       com.fasterxml.jackson.core.type.TypeReference<T> valueTypeRef)
                throws IOException
```
    Convenience method that binds content read using given parser, using configuration of this reader, except that expected value type is specified with the call (instead of currently configured root type). Value return is either newly constructed, or root value that was specified with withValueToUpdate(Object).
    NOTE: this method never tries to auto-detect format, since actual (data-format specific) parser is given.
    
    Specified by:
    
    readValue in class com.fasterxml.jackson.core.ObjectCodec
    
    Throws:
    
    IOException
  - readValue
```
public <T> T readValue(com.fasterxml.jackson.core.JsonParser p,
                       com.fasterxml.jackson.core.type.ResolvedType valueType)
                throws IOException
```
    Convenience method that binds content read using given parser, using configuration of this reader, except that expected value type is specified with the call (instead of currently configured root type). Value return is either newly constructed, or root value that was specified with withValueToUpdate(Object).
    NOTE: this method never tries to auto-detect format, since actual (data-format specific) parser is given.
    
    Specified by:
    
    readValue in class com.fasterxml.jackson.core.ObjectCodec
    
    Throws:
    
    IOException
  - readValue
```
public <T> T readValue(com.fasterxml.jackson.core.JsonParser p,
                       JavaType valueType)
                throws IOException
```
    Type-safe overloaded method, basically alias for readValue(JsonParser, ResolvedType).
    NOTE: this method never tries to auto-detect format, since actual (data-format specific) parser is given.
    
    Throws:
    
    IOException
  - readValues
```
public <T> Iterator<T> readValues(com.fasterxml.jackson.core.JsonParser p,
                                  Class<T> valueType)
                           throws IOException
```
    Convenience method that is equivalent to:
```
   withType(valueType).readValues(p);
```
    Method reads a sequence of Objects from parser stream. Sequence can be either root-level "unwrapped" sequence (without surrounding JSON array), or a sequence contained in a JSON Array. In either case JsonParser MUST point to the first token of the first element, OR not point to any token (in which case it is advanced to the next token). This means, specifically, that for wrapped sequences, parser MUST NOT point to the surrounding START_ARRAY (one that contains values to read) but rather to the token following it which is the first token of the first value to read.
    NOTE: this method never tries to auto-detect format, since actual (data-format specific) parser is given.
    Specified by:
    
    readValues in class com.fasterxml.jackson.core.ObjectCodec
    
    Throws:
    
    IOException
  - readValues
```
public <T> Iterator<T> readValues(com.fasterxml.jackson.core.JsonParser p,
                                  com.fasterxml.jackson.core.type.TypeReference<T> valueTypeRef)
                           throws IOException
```
    Convenience method that is equivalent to:
```
   withType(valueTypeRef).readValues(p);
```
    Method reads a sequence of Objects from parser stream. Sequence can be either root-level "unwrapped" sequence (without surrounding JSON array), or a sequence contained in a JSON Array. In either case JsonParser MUST point to the first token of the first element, OR not point to any token (in which case it is advanced to the next token). This means, specifically, that for wrapped sequences, parser MUST NOT point to the surrounding START_ARRAY (one that contains values to read) but rather to the token following it which is the first token of the first value to read.
    NOTE: this method never tries to auto-detect format, since actual (data-format specific) parser is given.
    Specified by:
    
    readValues in class com.fasterxml.jackson.core.ObjectCodec
    
    Throws:
    
    IOException
  - readValues
```
public <T> Iterator<T> readValues(com.fasterxml.jackson.core.JsonParser p,
                                  com.fasterxml.jackson.core.type.ResolvedType valueType)
                           throws IOException
```
    Convenience method that is equivalent to:
```
   withType(valueType).readValues(p);
```
    Method reads a sequence of Objects from parser stream. Sequence can be either root-level "unwrapped" sequence (without surrounding JSON array), or a sequence contained in a JSON Array. In either case JsonParser MUST point to the first token of the first element, OR not point to any token (in which case it is advanced to the next token). This means, specifically, that for wrapped sequences, parser MUST NOT point to the surrounding START_ARRAY (one that contains values to read) but rather to the token following it which is the first token of the first value to read.
    NOTE: this method never tries to auto-detect format, since actual (data-format specific) parser is given.
    Specified by:
    
    readValues in class com.fasterxml.jackson.core.ObjectCodec
    
    Throws:
    
    IOException
  - readValues
```
public <T> Iterator<T> readValues(com.fasterxml.jackson.core.JsonParser p,
                                  JavaType valueType)
                           throws IOException
```
    Convenience method that is equivalent to:
```
   withType(valueType).readValues(p);
```
    Method reads a sequence of Objects from parser stream. Sequence can be either root-level "unwrapped" sequence (without surrounding JSON array), or a sequence contained in a JSON Array. In either case JsonParser MUST point to the first token of the first element, OR not point to any token (in which case it is advanced to the next token). This means, specifically, that for wrapped sequences, parser MUST NOT point to the surrounding START_ARRAY (one that contains values to read) but rather to the token following it which is the first token of the first value to read.
    NOTE: this method never tries to auto-detect format, since actual (data-format specific) parser is given.
    Throws:
    
    IOException
  - createArrayNode
```
public JsonNode createArrayNode()
```
    Specified by:
    
    createArrayNode in class com.fasterxml.jackson.core.ObjectCodec
  - createObjectNode
```
public JsonNode createObjectNode()
```
    Specified by:
    
    createObjectNode in class com.fasterxml.jackson.core.ObjectCodec
  - missingNode
```
public JsonNode missingNode()
```
    Overrides:
    
    missingNode in class com.fasterxml.jackson.core.TreeCodec
  - nullNode
```
public JsonNode nullNode()
```
    Overrides:
    
    nullNode in class com.fasterxml.jackson.core.TreeCodec
  - treeAsTokens
```
public com.fasterxml.jackson.core.JsonParser treeAsTokens(com.fasterxml.jackson.core.TreeNode n)
```
    Specified by:
    
    treeAsTokens in class com.fasterxml.jackson.core.ObjectCodec
  - readTree
```
public <T extends com.fasterxml.jackson.core.TreeNode> T readTree(com.fasterxml.jackson.core.JsonParser p)
                                                           throws IOException
```
    Convenience method that binds content read using given parser, using configuration of this reader, except that content is bound as JSON tree instead of configured root value type. Returns JsonNode that represents the root of the resulting tree, if there was content to read, or null if no more content is accessible via passed JsonParser.
    NOTE! Behavior with end-of-input (no more content) differs between this readTree method, and all other methods that take input source: latter will return "missing node", NOT null
    Note: if an object was specified with withValueToUpdate(java.lang.Object), it will be ignored.
    NOTE: this method never tries to auto-detect format, since actual (data-format specific) parser is given.
    
    Specified by:
    
    readTree in class com.fasterxml.jackson.core.ObjectCodec
    
    Throws:
    
    IOException
  - writeTree
```
public void writeTree(com.fasterxml.jackson.core.JsonGenerator g,
                      com.fasterxml.jackson.core.TreeNode rootNode)
```
    Specified by:
    
    writeTree in class com.fasterxml.jackson.core.ObjectCodec
  - readValue
```
public <T> T readValue(InputStream src)
                throws IOException
```
    Method that binds content read from given input source, using configuration of this reader. Value return is either newly constructed, or root value that was specified with withValueToUpdate(Object).
    
    Parameters:
    
    src - Source to read content from
    
    Throws:
    
    IOException
  - readValue
```
public <T> T readValue(InputStream src,
                       Class<T> valueType)
                throws IOException
```
    Same as readValue(InputStream) except that target value type overridden as valueType
    
    Parameters:
    
    src - Source to read content from
    
    valueType - Target type to bind content to
    
    Throws:
    
    IOException
    
    Since:
    
    2.11
  - readValue
```
public <T> T readValue(Reader src)
                throws IOException
```
    Method that binds content read from given input source, using configuration of this reader. Value return is either newly constructed, or root value that was specified with withValueToUpdate(Object).
    
    Parameters:
    
    src - Source to read content from
    
    Throws:
    
    IOException
  - readValue
```
public <T> T readValue(Reader src,
                       Class<T> valueType)
                throws IOException
```
    Same as readValue(Reader) except that target value type overridden as valueType
    
    Parameters:
    
    src - Source to read content from
    
    valueType - Target type to bind content to
    
    Throws:
    
    IOException
    
    Since:
    
    2.11
  - readValue
```
public <T> T readValue(String src)
                throws com.fasterxml.jackson.core.JsonProcessingException,
                       JsonMappingException
```
    Method that binds content read from given JSON string, using configuration of this reader. Value return is either newly constructed, or root value that was specified with withValueToUpdate(Object).
    
    Parameters:
    
    src - String that contains content to read
    
    Throws:
    
    com.fasterxml.jackson.core.JsonProcessingException
    
    JsonMappingException
  - readValue
```
public <T> T readValue(String src,
                       Class<T> valueType)
                throws IOException
```
    Same as readValue(String) except that target value type overridden as valueType
    
    Parameters:
    
    src - String that contains content to read
    
    valueType - Target type to bind content to
    
    Throws:
    
    IOException
    
    Since:
    
    2.11
  - readValue
```
public <T> T readValue(byte[] content)
                throws IOException
```
    Method that binds content read from given byte array, using configuration of this reader. Value return is either newly constructed, or root value that was specified with withValueToUpdate(Object).
    
    Parameters:
    
    content - Byte array that contains encoded content to read
    
    Throws:
    
    IOException
  - readValue
```
public <T> T readValue(byte[] content,
                       Class<T> valueType)
                throws IOException
```
    Same as readValue(byte[]) except that target value type overridden as valueType
    
    Parameters:
    
    content - Byte array that contains encoded content to read
    
    valueType - Target type to bind content to
    
    Throws:
    
    IOException
    
    Since:
    
    2.11
  - readValue
```
public <T> T readValue(byte[] buffer,
                       int offset,
                       int length)
                throws IOException
```
    Method that binds content read from given byte array, using configuration of this reader. Value return is either newly constructed, or root value that was specified with withValueToUpdate(Object).
    
    Parameters:
    
    buffer - Byte array that contains encoded content to read
    
    offset - Offset of the first content byte in buffer
    
    length - Length of content in buffer, in bytes
    
    Throws:
    
    IOException
  - readValue
```
public <T> T readValue(byte[] buffer,
                       int offset,
                       int length,
                       Class<T> valueType)
                throws IOException
```
    Same as readValue(byte[],int,int) except that target value type overridden as valueType
    
    Parameters:
    
    buffer - Byte array that contains encoded content to read
    
    offset - Offset of the first content byte in buffer
    
    length - Length of content in buffer, in bytes
    
    valueType - Target type to bind content to
    
    Throws:
    
    IOException
    
    Since:
    
    2.11
  - readValue
```
public <T> T readValue(File src)
                throws IOException
```
    Method that binds content read from given File using configuration of this reader. Value return is either newly constructed, or root value that was specified with withValueToUpdate(Object).
    
    Parameters:
    
    src - File that contains content to read
    
    Throws:
    
    IOException
  - readValue
```
public <T> T readValue(File src,
                       Class<T> valueType)
                throws IOException
```
    Same as readValue(File) except that target value type overridden as valueType
    
    Parameters:
    
    src - File that contains content to read
    
    valueType - Target type to bind content to
    
    Throws:
    
    IOException
    
    Since:
    
    2.11
  - readValue
```
public <T> T readValue(URL src)
                throws IOException
```
    Method that binds content read from given input source, using configuration of this reader. Value return is either newly constructed, or root value that was specified with withValueToUpdate(Object).
    
    NOTE: handling of URL is delegated to JsonFactory.createParser(java.net.URL) and usually simply calls URL.openStream(), meaning no special handling is done. If different HTTP connection options are needed you will need to create InputStream separately.
    
    Throws:
    
    IOException
  - readValue
```
public <T> T readValue(URL src,
                       Class<T> valueType)
                throws IOException
```
    Same as readValue(URL) except that target value type overridden as valueType
    
    Parameters:
    
    src - URL pointing to resource that contains content to read
    
    valueType - Target type to bind content to
    
    Throws:
    
    IOException
    
    Since:
    
    2.11
  - readValue
```
public <T> T readValue(JsonNode content)
                throws IOException
```
    Convenience method for converting results from given JSON tree into given value type. Basically short-cut for:
```
   objectReader.readValue(src.traverse())
```
    Parameters:
    
    content - Tree that contains content to convert
    
    Throws:
    
    IOException
  - readValue
```
public <T> T readValue(JsonNode content,
                       Class<T> valueType)
                throws IOException
```
    Same as readValue(JsonNode) except that target value type overridden as valueType
    
    Parameters:
    
    content - Tree that contains content to convert
    
    valueType - Target type to convert content to
    
    Throws:
    
    IOException
    
    Since:
    
    2.11
  - readValue
```
public <T> T readValue(DataInput src)
                throws IOException
```
    Throws:
    
    IOException
  - readValue
```
public <T> T readValue(DataInput content,
                       Class<T> valueType)
                throws IOException
```
    Same as readValue(DataInput) except that target value type overridden as valueType
    
    Parameters:
    
    content - DataInput that contains content to read
    
    valueType - Target type to bind content to
    
    Throws:
    
    IOException
    
    Since:
    
    2.11
  - readTree
```
public JsonNode readTree(InputStream src)
                  throws IOException
```
    Method that reads content from given input source, using configuration of this reader, and binds it as JSON Tree. Returns JsonNode that represents the root of the resulting tree, if there was content to read, or "missing node" (instance of JsonNode for which JsonNode.isMissingNode() returns true, and behaves otherwise similar to "null node") if no more content is accessible through passed-in input source.
    NOTE! Behavior with end-of-input (no more content) differs between this readTree method, and readTree(JsonParser) -- latter returns null for "no content" case.
    Note that if an object was specified with a call to withValueToUpdate(Object) it will just be ignored; result is always a newly constructed JsonNode instance.
    
    Throws:
    
    IOException
  - readTree
```
public JsonNode readTree(Reader src)
                  throws IOException
```
    Same as readTree(InputStream) except content accessed through passed-in Reader
    
    Throws:
    
    IOException
  - readTree
```
public JsonNode readTree(String json)
                  throws com.fasterxml.jackson.core.JsonProcessingException,
                         JsonMappingException
```
    Same as readTree(InputStream) except content read from passed-in String
    
    Throws:
    
    com.fasterxml.jackson.core.JsonProcessingException
    
    JsonMappingException
  - readTree
```
public JsonNode readTree(byte[] json)
                  throws IOException
```
    Same as readTree(InputStream) except content read from passed-in byte array.
    
    Throws:
    
    IOException
  - readTree
```
public JsonNode readTree(byte[] json,
                         int offset,
                         int len)
                  throws IOException
```
    Same as readTree(InputStream) except content read from passed-in byte array.
    
    Throws:
    
    IOException
  - readTree
```
public JsonNode readTree(DataInput src)
                  throws IOException
```
    Same as readTree(InputStream) except content read using passed-in DataInput.
    
    Throws:
    
    IOException
  - readValues
```
public <T> MappingIterator<T> readValues(com.fasterxml.jackson.core.JsonParser p)
                                  throws IOException
```
    Method for reading sequence of Objects from parser stream.
    Sequence can be either root-level "unwrapped" sequence (without surrounding JSON array), or a sequence contained in a JSON Array. In either case JsonParser must point to the first token of the first element, OR not point to any token (in which case it is advanced to the next token). This means, specifically, that for wrapped sequences, parser MUST NOT point to the surrounding START_ARRAY but rather to the token following it.
    
    Throws:
    
    IOException
  - readValues
```
public <T> MappingIterator<T> readValues(InputStream src)
                                  throws IOException
```
    Method for reading sequence of Objects from parser stream.
    Sequence can be either wrapped or unwrapped root-level sequence: wrapped means that the elements are enclosed in JSON Array; and unwrapped that elements are directly accessed at main level. Assumption is that iff the first token of the document is START_ARRAY, we have a wrapped sequence; otherwise unwrapped. For wrapped sequences, leading START_ARRAY is skipped, so that for both cases, underlying JsonParser will point to what is expected to be the first token of the first element.
    Note that the wrapped vs unwrapped logic means that it is NOT possible to use this method for reading an unwrapped sequence of elements written as JSON Arrays: to read such sequences, one has to use readValues(JsonParser), making sure parser points to the first token of the first element (i.e. the second START_ARRAY which is part of the first element).
    
    Throws:
    
    IOException
  - readValues
```
public <T> MappingIterator<T> readValues(Reader src)
                                  throws IOException
```
    Overloaded version of readValue(InputStream).
    
    Throws:
    
    IOException
  - readValues
```
public <T> MappingIterator<T> readValues(String json)
                                  throws IOException
```
    Overloaded version of readValue(InputStream).
    
    Parameters:
    
    json - String that contains JSON content to parse
    
    Throws:
    
    IOException
  - readValues
```
public <T> MappingIterator<T> readValues(byte[] src,
                                         int offset,
                                         int length)
                                  throws IOException
```
    Overloaded version of readValue(InputStream).
    
    Throws:
    
    IOException
  - readValues
```
public final <T> MappingIterator<T> readValues(byte[] src)
                                        throws IOException
```
    Overloaded version of readValue(InputStream).
    
    Throws:
    
    IOException
  - readValues
```
public <T> MappingIterator<T> readValues(File src)
                                  throws IOException
```
    Overloaded version of readValue(InputStream).
    
    Throws:
    
    IOException
  - readValues
```
public <T> MappingIterator<T> readValues(URL src)
                                  throws IOException
```
    Overloaded version of readValue(InputStream).
    NOTE: handling of URL is delegated to JsonFactory.createParser(java.net.URL) and usually simply calls URL.openStream(), meaning no special handling is done. If different HTTP connection options are needed you will need to create InputStream separately.
    
    Parameters:
    
    src - URL to read to access JSON content to parse.
    
    Throws:
    
    IOException
  - readValues
```
public <T> MappingIterator<T> readValues(DataInput src)
                                  throws IOException
```
    Throws:
    
    IOException
    
    Since:
    
    2.8
  - treeToValue
```
public <T> T treeToValue(com.fasterxml.jackson.core.TreeNode n,
                         Class<T> valueType)
                  throws com.fasterxml.jackson.core.JsonProcessingException
```
    Specified by:
    
    treeToValue in class com.fasterxml.jackson.core.ObjectCodec
    
    Throws:
    
    com.fasterxml.jackson.core.JsonProcessingException
  - treeToValue
```
public <T> T treeToValue(com.fasterxml.jackson.core.TreeNode n,
                         JavaType valueType)
                  throws com.fasterxml.jackson.core.JsonProcessingException
```
    Throws:
    
    com.fasterxml.jackson.core.JsonProcessingException
  - writeValue
```
public void writeValue(com.fasterxml.jackson.core.JsonGenerator gen,
                       Object value)
                throws IOException
```
    Specified by:
    
    writeValue in class com.fasterxml.jackson.core.ObjectCodec
    
    Throws:
    
    IOException
  - _bind
```
protected Object _bind(com.fasterxml.jackson.core.JsonParser p,
                       Object valueToUpdate)
                throws IOException
```
    Actual implementation of value reading+binding operation.
    
    Throws:
    
    IOException
  - _bindAndClose
```
protected Object _bindAndClose(com.fasterxml.jackson.core.JsonParser p0)
                        throws IOException
```
    Throws:
    
    IOException
  - _bindAndCloseAsTree
```
protected final JsonNode _bindAndCloseAsTree(com.fasterxml.jackson.core.JsonParser p0)
                                      throws IOException
```
    Throws:
    
    IOException
  - _bindAsTree
```
protected final JsonNode _bindAsTree(com.fasterxml.jackson.core.JsonParser p)
                              throws IOException
```
    Throws:
    
    IOException
  - _bindAsTreeOrNull
```
protected final JsonNode _bindAsTreeOrNull(com.fasterxml.jackson.core.JsonParser p)
                                    throws IOException
```
    Same as _bindAsTree(com.fasterxml.jackson.core.JsonParser) except end-of-input is reported by returning null, not "missing node"
    
    Throws:
    
    IOException
  - _bindAndReadValues
```
protected <T> MappingIterator<T> _bindAndReadValues(com.fasterxml.jackson.core.JsonParser p)
                                             throws IOException
```
    Throws:
    
    IOException
    
    Since:
    
    2.1
  - _considerFilter
```
protected com.fasterxml.jackson.core.JsonParser _considerFilter(com.fasterxml.jackson.core.JsonParser p,
                                                                boolean multiValue)
```
    Consider filter when creating JsonParser.
  - _verifyNoTrailingTokens
```
protected final void _verifyNoTrailingTokens(com.fasterxml.jackson.core.JsonParser p,
                                             DeserializationContext ctxt,
                                             JavaType bindType)
                                      throws IOException
```
    Throws:
    
    IOException
    
    Since:
    
    2.9
  - _detectBindAndClose
```
protected Object _detectBindAndClose(byte[] src,
                                     int offset,
                                     int length)
                              throws IOException
```
    Throws:
    
    IOException
  - _detectBindAndClose
```
protected Object _detectBindAndClose(DataFormatReaders.Match match,
                                     boolean forceClosing)
                              throws IOException
```
    Throws:
    
    IOException
  - _detectBindAndReadValues
```
protected <T> MappingIterator<T> _detectBindAndReadValues(DataFormatReaders.Match match,
                                                          boolean forceClosing)
                                                   throws IOException
```
    Throws:
    
    IOException
  - _detectBindAndCloseAsTree
```
protected JsonNode _detectBindAndCloseAsTree(InputStream in)
                                      throws IOException
```
    Throws:
    
    IOException
  - _reportUnkownFormat
```
protected void _reportUnkownFormat(DataFormatReaders detector,
                                   DataFormatReaders.Match match)
                            throws IOException
```
    Method called to indicate that format detection failed to detect format of given input
    
    Throws:
    
    IOException
  - _verifySchemaType
```
protected void _verifySchemaType(com.fasterxml.jackson.core.FormatSchema schema)
```
    Since:
    
    2.2
  - createDeserializationContext
```
protected DefaultDeserializationContext createDeserializationContext(com.fasterxml.jackson.core.JsonParser p)
```
    Internal helper method called to create an instance of DeserializationContext for deserializing a single root value. Can be overridden if a custom context is needed.
  - createDummyDeserializationContext
```
protected DefaultDeserializationContext createDummyDeserializationContext()
```
  - _inputStream
```
protected InputStream _inputStream(URL src)
                            throws IOException
```
    Throws:
    
    IOException
  - _inputStream
```
protected InputStream _inputStream(File f)
                            throws IOException
```
    Throws:
    
    IOException
  - _reportUndetectableSource
```
protected void _reportUndetectableSource(Object src)
                                  throws com.fasterxml.jackson.core.exc.StreamReadException
```
    Throws:
    
    com.fasterxml.jackson.core.exc.StreamReadException
  - _findRootDeserializer
```
protected JsonDeserializer<Object> _findRootDeserializer(DeserializationContext ctxt)
                                                  throws DatabindException
```
    Method called to locate deserializer for the passed root-level value.
    
    Throws:
    
    DatabindException
  - _findTreeDeserializer
```
protected JsonDeserializer<Object> _findTreeDeserializer(DeserializationContext ctxt)
                                                  throws DatabindException
```
    Throws:
    
    DatabindException
    
    Since:
    
    2.6
  - _prefetchRootDeserializer
```
protected JsonDeserializer<Object> _prefetchRootDeserializer(JavaType valueType)
```
    Method called to locate deserializer ahead of time, if permitted by configuration. Method also is NOT to throw an exception if access fails.
  - _jsonNodeType
```
protected final JavaType _jsonNodeType()
```
    Since:
    
    2.10
  - _assertNotNull
```
protected final void _assertNotNull(String paramName,
                                    Object src)
```

Class ObjectReader

Field Summary

Constructor Summary

Method Summary

Methods inherited from class com.fasterxml.jackson.core.ObjectCodec

Methods inherited from class java.lang.Object

Field Detail

_config

_context

_parserFactory

_unwrapRoot

_valueType

_rootDeserializer

_valueToUpdate

_schema

_injectableValues

_dataFormatReaders

_rootDeserializers

_jsonNodeType

Constructor Detail

ObjectReader

ObjectReader

ObjectReader

ObjectReader

ObjectReader

ObjectReader

Method Detail

version

_new

_new

_new

_newIterator

_initForReading

_initForMultiRead

with

with

withFeatures

without

without

withoutFeatures

with

withFeatures

without

withoutFeatures

with

without

with

withFeatures

without

withoutFeatures

at

at

with

with

with

with

withRootName

withRootName

withoutRootName

with

forType

forType

forType

withType

withType

withType

withType

withValueToUpdate

withView

with

with

withHandler

with

withFormatDetection

withFormatDetection

with

withAttributes

withAttribute

withoutAttribute

_with