JsonFactory (jackson-core 2.9.2)

java.lang.Object
- com.fasterxml.jackson.core.JsonFactory

All Implemented Interfaces:

Versioned, Serializable
```
public class JsonFactory
extends Object
implements Versioned, Serializable
```
The main factory class of Jackson package, used to configure and construct reader (aka parser, JsonParser) and writer (aka generator, JsonGenerator) instances.
Factory instances are thread-safe and reusable after configuration (if any). Typically applications and services use only a single globally shared factory instance, unless they need differently configured factories. Factory reuse is important if efficiency matters; most recycling of expensive construct is done on per-factory basis.
Creation of a factory instance is a light-weight operation, and since there is no need for pluggable alternative implementations (as there is no "standard" JSON processor API to implement), the default constructor is used for constructing factory instances.

Author:

Tatu Saloranta

See Also:

Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static class JsonFactory.Feature
Enumeration that defines all on/off features that can only be changed for JsonFactory.

Nested Classes
Modifier and Type	Class and Description
`static class`	`JsonFactory.Feature` Enumeration that defines all on/off features that can only be changed for `JsonFactory`.

Field Summary

Fields
Modifier and Type	Field and Description
`protected ByteQuadsCanonicalizer`	`_byteSymbolCanonicalizer` Alternative to the basic symbol table, some stream-based parsers use different name canonicalization method.
`protected CharacterEscapes`	`_characterEscapes` Definition of custom character escapes to use for generators created by this factory, if any.
`protected int`	`_factoryFeatures` Currently enabled factory features.
`protected int`	`_generatorFeatures` Currently enabled generator features.
`protected InputDecorator`	`_inputDecorator` Optional helper object that may decorate input sources, to do additional processing on input during parsing.
`protected ObjectCodec`	`_objectCodec` Object that implements conversion functionality between Java objects and JSON content.
`protected OutputDecorator`	`_outputDecorator` Optional helper object that may decorate output object, to do additional processing on output during content generation.
`protected int`	`_parserFeatures` Currently enabled parser features.
`protected CharsToNameCanonicalizer`	`_rootCharSymbols` Each factory comes equipped with a shared root symbol table.
`protected SerializableString`	`_rootValueSeparator` Separator used between root-level values, if any; null indicates "do not add separator".
`protected static int`	`DEFAULT_FACTORY_FEATURE_FLAGS` Bitfield (set of flags) of all factory features that are enabled by default.
`protected static int`	`DEFAULT_GENERATOR_FEATURE_FLAGS` Bitfield (set of flags) of all generator features that are enabled by default.
`protected static int`	`DEFAULT_PARSER_FEATURE_FLAGS` Bitfield (set of flags) of all parser features that are enabled by default.
`static String`	`FORMAT_NAME_JSON` Name used to identify JSON format (and returned by `getFormatName()`

Constructor Summary

Constructors
Modifier	Constructor and Description
	`JsonFactory()` Default constructor used to create factory instances.
`protected`	`JsonFactory(JsonFactory src, ObjectCodec codec)` Constructor used when copy()ing a factory instance.
	`JsonFactory(ObjectCodec oc)`

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`protected void`	`_checkInvalidCopy(Class<?> exp)`
`protected IOContext`	`_createContext(Object srcRef, boolean resourceManaged)` Overridable factory method that actually instantiates desired context object.
`protected OutputStream`	`_createDataOutputWrapper(DataOutput out)`
`protected JsonGenerator`	`_createGenerator(Writer out, IOContext ctxt)` Overridable factory method that actually instantiates generator for given `Writer` and context object.
`protected JsonParser`	`_createParser(byte[] data, int offset, int len, IOContext ctxt)` Overridable factory method that actually instantiates parser using given `Reader` object for reading content passed as raw byte array.
`protected JsonParser`	`_createParser(char[] data, int offset, int len, IOContext ctxt, boolean recyclable)` Overridable factory method that actually instantiates parser using given `char[]` object for accessing content.
`protected JsonParser`	`_createParser(DataInput input, IOContext ctxt)` Optional factory method, expected to be overridden
`protected JsonParser`	`_createParser(InputStream in, IOContext ctxt)` Overridable factory method that actually instantiates desired parser given `InputStream` and context object.
`protected JsonParser`	`_createParser(Reader r, IOContext ctxt)` Overridable factory method that actually instantiates parser using given `Reader` object for reading content.
`protected JsonGenerator`	`_createUTF8Generator(OutputStream out, IOContext ctxt)` Overridable factory method that actually instantiates generator for given `OutputStream` and context object, using UTF-8 encoding.
`protected Writer`	`_createWriter(OutputStream out, JsonEncoding enc, IOContext ctxt)`
`protected DataInput`	`_decorate(DataInput in, IOContext ctxt)`
`protected InputStream`	`_decorate(InputStream in, IOContext ctxt)`
`protected OutputStream`	`_decorate(OutputStream out, IOContext ctxt)`
`protected Reader`	`_decorate(Reader in, IOContext ctxt)`
`protected Writer`	`_decorate(Writer out, IOContext ctxt)`
`BufferRecycler`	`_getBufferRecycler()` Method used by factory to create buffer recycler instances for parsers and generators.
`protected InputStream`	`_optimizedStreamFromURL(URL url)` Helper methods used for constructing an optimal stream for parsers to use, when input is to be read from an URL.
`boolean`	`canHandleBinaryNatively()` Introspection method that higher-level functionality may call to see whether underlying data format can read and write binary data natively; that is, embeded it as-is without using encodings such as Base64.
`boolean`	`canParseAsync()` Introspection method that can be used to check whether this factory can create non-blocking parsers: parsers that do not use blocking I/O abstractions but instead use a `NonBlockingInputFeeder`.
`boolean`	`canUseCharArrays()` Introspection method that can be used by base factory to check whether access using `char[]` is something that actual parser implementations can take advantage of, over having to use `Reader`.
`boolean`	`canUseSchema(FormatSchema schema)` Method that can be used to quickly check whether given schema is something that parsers and/or generators constructed by this factory could use.
`JsonFactory`	`configure(JsonFactory.Feature f, boolean state)` Method for enabling or disabling specified parser feature (check `JsonParser.Feature` for list of features)
`JsonFactory`	`configure(JsonGenerator.Feature f, boolean state)` Method for enabling or disabling specified generator feature (check `JsonGenerator.Feature` for list of features)
`JsonFactory`	`configure(JsonParser.Feature f, boolean state)` Method for enabling or disabling specified parser feature (check `JsonParser.Feature` for list of features)
`JsonFactory`	`copy()` Method for constructing a new `JsonFactory` that has the same settings as this instance, but is otherwise independent (i.e.
`JsonGenerator`	`createGenerator(DataOutput out)` Convenience method for constructing generator that uses default encoding of the format (UTF-8 for JSON and most other data formats).
`JsonGenerator`	`createGenerator(DataOutput out, JsonEncoding enc)` Method for constructing generator for writing content using specified `DataOutput` instance.
`JsonGenerator`	`createGenerator(File f, JsonEncoding enc)` Method for constructing JSON generator for writing JSON content to specified file, overwriting contents it might have (or creating it if such file does not yet exist).
`JsonGenerator`	`createGenerator(OutputStream out)` Convenience method for constructing generator that uses default encoding of the format (UTF-8 for JSON and most other data formats).
`JsonGenerator`	`createGenerator(OutputStream out, JsonEncoding enc)` Method for constructing JSON generator for writing JSON content using specified output stream.
`JsonGenerator`	`createGenerator(Writer w)` Method for constructing JSON generator for writing JSON content using specified Writer.
`JsonGenerator`	`createJsonGenerator(OutputStream out)` Deprecated. Since 2.2, use `createGenerator(OutputStream)` instead.
`JsonGenerator`	`createJsonGenerator(OutputStream out, JsonEncoding enc)` Deprecated. Since 2.2, use `createGenerator(OutputStream, JsonEncoding)` instead.
`JsonGenerator`	`createJsonGenerator(Writer out)` Deprecated. Since 2.2, use `createGenerator(Writer)` instead.
`JsonParser`	`createJsonParser(byte[] data)` Deprecated. Since 2.2, use `createParser(byte[])` instead.
`JsonParser`	`createJsonParser(byte[] data, int offset, int len)` Deprecated. Since 2.2, use `createParser(byte[],int,int)` instead.
`JsonParser`	`createJsonParser(File f)` Deprecated. Since 2.2, use `createParser(File)` instead.
`JsonParser`	`createJsonParser(InputStream in)` Deprecated. Since 2.2, use `createParser(InputStream)` instead.
`JsonParser`	`createJsonParser(Reader r)` Deprecated. Since 2.2, use `createParser(Reader)` instead.
`JsonParser`	`createJsonParser(String content)` Deprecated. Since 2.2, use `createParser(String)` instead.
`JsonParser`	`createJsonParser(URL url)` Deprecated. Since 2.2, use `createParser(URL)` instead.
`JsonParser`	`createNonBlockingByteArrayParser()` Optional method for constructing parser for non-blocking parsing via `ByteArrayFeeder` interface (accessed using `JsonParser.getNonBlockingInputFeeder()` from constructed instance).
`JsonParser`	`createParser(byte[] data)` Method for constructing parser for parsing the contents of given byte array.
`JsonParser`	`createParser(byte[] data, int offset, int len)` Method for constructing parser for parsing the contents of given byte array.
`JsonParser`	`createParser(char[] content)` Method for constructing parser for parsing contents of given char array.
`JsonParser`	`createParser(char[] content, int offset, int len)` Method for constructing parser for parsing contents of given char array.
`JsonParser`	`createParser(DataInput in)` Optional method for constructing parser for reading contents from specified `DataInput` instance.
`JsonParser`	`createParser(File f)` Method for constructing JSON parser instance to parse contents of specified file.
`JsonParser`	`createParser(InputStream in)` Method for constructing JSON parser instance to parse the contents accessed via specified input stream.
`JsonParser`	`createParser(Reader r)` Method for constructing parser for parsing the contents accessed via specified Reader.
`JsonParser`	`createParser(String content)` Method for constructing parser for parsing contents of given String.
`JsonParser`	`createParser(URL url)` Method for constructing JSON parser instance to parse contents of resource reference by given URL.
`JsonFactory`	`disable(JsonFactory.Feature f)` Method for disabling specified parser features (check `JsonFactory.Feature` for list of features)
`JsonFactory`	`disable(JsonGenerator.Feature f)` Method for disabling specified generator feature (check `JsonGenerator.Feature` for list of features)
`JsonFactory`	`disable(JsonParser.Feature f)` Method for disabling specified parser features (check `JsonParser.Feature` for list of features)
`JsonFactory`	`enable(JsonFactory.Feature f)` Method for enabling specified parser feature (check `JsonFactory.Feature` for list of features)
`JsonFactory`	`enable(JsonGenerator.Feature f)` Method for enabling specified generator features (check `JsonGenerator.Feature` for list of features)
`JsonFactory`	`enable(JsonParser.Feature f)` Method for enabling specified parser feature (check `JsonParser.Feature` for list of features)
`CharacterEscapes`	`getCharacterEscapes()` Method for accessing custom escapes factory uses for `JsonGenerator`s it creates.
`ObjectCodec`	`getCodec()`
`String`	`getFormatName()` Method that returns short textual id identifying format this factory supports.
`Class<? extends FormatFeature>`	`getFormatReadFeatureType()` Method for accessing kind of `FormatFeature` that a parser `JsonParser` produced by this factory would accept, if any; `null` returned if none.
`Class<? extends FormatFeature>`	`getFormatWriteFeatureType()` Method for accessing kind of `FormatFeature` that a parser `JsonGenerator` produced by this factory would accept, if any; `null` returned if none.
`InputDecorator`	`getInputDecorator()` Method for getting currently configured input decorator (if any; there is no default decorator).
`OutputDecorator`	`getOutputDecorator()` Method for getting currently configured output decorator (if any; there is no default decorator).
`String`	`getRootValueSeparator()`
`MatchStrength`	`hasFormat(InputAccessor acc)` Convenience method for trying to determine whether input via given accessor is of format type supported by this factory.
`protected MatchStrength`	`hasJSONFormat(InputAccessor acc)` Helper method that can be called to determine if content accessed using given accessor seems to be JSON content.
`boolean`	`isEnabled(JsonFactory.Feature f)` Checked whether specified parser feature is enabled.
`boolean`	`isEnabled(JsonGenerator.Feature f)` Check whether specified generator feature is enabled.
`boolean`	`isEnabled(JsonParser.Feature f)` Checked whether specified parser feature is enabled.
`protected Object`	`readResolve()` Method that we need to override to actually make restoration go through constructors etc.
`boolean`	`requiresCustomCodec()` Method that can be called to determine if a custom `ObjectCodec` is needed for binding data parsed using `JsonParser` constructed by this factory (which typically also implies the same for serialization with `JsonGenerator`).
`boolean`	`requiresPropertyOrdering()` Introspection method that higher-level functionality may call to see whether underlying data format requires a stable ordering of object properties or not.
`JsonFactory`	`setCharacterEscapes(CharacterEscapes esc)` Method for defining custom escapes factory uses for `JsonGenerator`s it creates.
`JsonFactory`	`setCodec(ObjectCodec oc)` Method for associating a `ObjectCodec` (typically a `com.fasterxml.jackson.databind.ObjectMapper`) with this factory (and more importantly, parsers and generators it constructs).
`JsonFactory`	`setInputDecorator(InputDecorator d)` Method for overriding currently configured input decorator
`JsonFactory`	`setOutputDecorator(OutputDecorator d)` Method for overriding currently configured output decorator
`JsonFactory`	`setRootValueSeparator(String sep)` Method that allows overriding String used for separating root-level JSON values (default is single space character)
`Version`	`version()` Method called to detect version of the component that implements this interface; returned version should never be null, but may return specific "not available" instance (see `Version` for details).

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

- Field Detail
  - FORMAT_NAME_JSON
```
public static final String FORMAT_NAME_JSON
```
    Name used to identify JSON format (and returned by getFormatName()
    
    See Also:
    
    Constant Field Values
  - DEFAULT_FACTORY_FEATURE_FLAGS
```
protected static final int DEFAULT_FACTORY_FEATURE_FLAGS
```
    Bitfield (set of flags) of all factory features that are enabled by default.
  - DEFAULT_PARSER_FEATURE_FLAGS
```
protected static final int DEFAULT_PARSER_FEATURE_FLAGS
```
    Bitfield (set of flags) of all parser features that are enabled by default.
  - DEFAULT_GENERATOR_FEATURE_FLAGS
```
protected static final int DEFAULT_GENERATOR_FEATURE_FLAGS
```
    Bitfield (set of flags) of all generator features that are enabled by default.
  - _rootCharSymbols
```
protected final transient CharsToNameCanonicalizer _rootCharSymbols
```
    Each factory comes equipped with a shared root symbol table. It should not be linked back to the original blueprint, to avoid contents from leaking between factories.
  - _byteSymbolCanonicalizer
```
protected final transient ByteQuadsCanonicalizer _byteSymbolCanonicalizer
```
    Alternative to the basic symbol table, some stream-based parsers use different name canonicalization method.
    TODO: should clean up this; looks messy having 2 alternatives with not very clear differences.
    
    Since:
    
    2.6.0
  - _objectCodec
```
protected ObjectCodec _objectCodec
```
    Object that implements conversion functionality between Java objects and JSON content. For base JsonFactory implementation usually not set by default, but can be explicitly set. Sub-classes (like @link org.codehaus.jackson.map.MappingJsonFactory} usually provide an implementation.
  - _factoryFeatures
```
protected int _factoryFeatures
```
    Currently enabled factory features.
  - _parserFeatures
```
protected int _parserFeatures
```
    Currently enabled parser features.
  - _generatorFeatures
```
protected int _generatorFeatures
```
    Currently enabled generator features.
  - _characterEscapes
```
protected CharacterEscapes _characterEscapes
```
    Definition of custom character escapes to use for generators created by this factory, if any. If null, standard data format specific escapes are used.
  - _inputDecorator
```
protected InputDecorator _inputDecorator
```
    Optional helper object that may decorate input sources, to do additional processing on input during parsing.
  - _outputDecorator
```
protected OutputDecorator _outputDecorator
```
    Optional helper object that may decorate output object, to do additional processing on output during content generation.
  - _rootValueSeparator
```
protected SerializableString _rootValueSeparator
```
    Separator used between root-level values, if any; null indicates "do not add separator". Default separator is a single space character.
    
    Since:
    
    2.1
- Constructor Detail
  - JsonFactory
```
public JsonFactory()
```
    Default constructor used to create factory instances. Creation of a factory instance is a light-weight operation, but it is still a good idea to reuse limited number of factory instances (and quite often just a single instance): factories are used as context for storing some reused processing objects (such as symbol tables parsers use) and this reuse only works within context of a single factory instance.
  - JsonFactory
```
public JsonFactory(ObjectCodec oc)
```
  - JsonFactory
```
protected JsonFactory(JsonFactory src,
                      ObjectCodec codec)
```
    Constructor used when copy()ing a factory instance.
    
    Since:
    
    2.2.1
- Method Detail
  - copy
```
public JsonFactory copy()
```
    Method for constructing a new JsonFactory that has the same settings as this instance, but is otherwise independent (i.e. nothing is actually shared, symbol tables are separate). Note that ObjectCodec reference is not copied but is set to null; caller typically needs to set it after calling this method. Reason for this is that the codec is used for callbacks, and assumption is that there is strict 1-to-1 mapping between codec, factory. Caller has to, then, explicitly set codec after making the copy.
    
    Since:
    
    2.1
  - _checkInvalidCopy
```
protected void _checkInvalidCopy(Class<?> exp)
```
    Parameters:
    
    exp -
    
    Since:
    
    2.1
  - readResolve
```
protected Object readResolve()
```
    Method that we need to override to actually make restoration go through constructors etc. Also: must be overridden by sub-classes as well.
  - requiresPropertyOrdering
```
public boolean requiresPropertyOrdering()
```
    Introspection method that higher-level functionality may call to see whether underlying data format requires a stable ordering of object properties or not. This is usually used for determining whether to force a stable ordering (like alphabetic ordering by name) if no ordering if explicitly specified.
    Default implementation returns false as JSON does NOT require stable ordering. Formats that require ordering include positional textual formats like CSV, and schema-based binary formats like Avro.
    
    Since:
    
    2.3
  - canHandleBinaryNatively
```
public boolean canHandleBinaryNatively()
```
    Introspection method that higher-level functionality may call to see whether underlying data format can read and write binary data natively; that is, embeded it as-is without using encodings such as Base64.
    Default implementation returns false as JSON does not support native access: all binary content must use Base64 encoding. Most binary formats (like Smile and Avro) support native binary content.
    
    Since:
    
    2.3
  - canUseCharArrays
```
public boolean canUseCharArrays()
```
    Introspection method that can be used by base factory to check whether access using char[] is something that actual parser implementations can take advantage of, over having to use Reader. Sub-types are expected to override definition; default implementation (suitable for JSON) alleges that optimization are possible; and thereby is likely to try to access String content by first copying it into recyclable intermediate buffer.
    
    Since:
    
    2.4
  - canParseAsync
```
public boolean canParseAsync()
```
    Introspection method that can be used to check whether this factory can create non-blocking parsers: parsers that do not use blocking I/O abstractions but instead use a NonBlockingInputFeeder.
    
    Since:
    
    2.9
  - getFormatReadFeatureType
```
public Class<? extends FormatFeature> getFormatReadFeatureType()
```
    Method for accessing kind of FormatFeature that a parser JsonParser produced by this factory would accept, if any; null returned if none.
    
    Since:
    
    2.6
  - getFormatWriteFeatureType
```
public Class<? extends FormatFeature> getFormatWriteFeatureType()
```
    Method for accessing kind of FormatFeature that a parser JsonGenerator produced by this factory would accept, if any; null returned if none.
    
    Since:
    
    2.6
  - canUseSchema
```
public boolean canUseSchema(FormatSchema schema)
```
    Method that can be used to quickly check whether given schema is something that parsers and/or generators constructed by this factory could use. Note that this means possible use, at the level of data format (i.e. schema is for same data format as parsers and generators this factory constructs); individual schema instances may have further usage restrictions.
    
    Since:
    
    2.1
  - getFormatName
```
public String getFormatName()
```
    Method that returns short textual id identifying format this factory supports.
    Note: sub-classes should override this method; default implementation will return null for all sub-classes
  - hasFormat
```
public MatchStrength hasFormat(InputAccessor acc)
                        throws IOException
```
    Convenience method for trying to determine whether input via given accessor is of format type supported by this factory.
    
    Throws:
    
    IOException
  - requiresCustomCodec
```
public boolean requiresCustomCodec()
```
    Method that can be called to determine if a custom ObjectCodec is needed for binding data parsed using JsonParser constructed by this factory (which typically also implies the same for serialization with JsonGenerator).
    
    Returns:
    
    True if custom codec is needed with parsers and generators created by this factory; false if a general ObjectCodec is enough
    
    Since:
    
    2.1
  - hasJSONFormat
```
protected MatchStrength hasJSONFormat(InputAccessor acc)
                               throws IOException
```
    Helper method that can be called to determine if content accessed using given accessor seems to be JSON content.
    
    Throws:
    
    IOException
  - version
```
public Version version()
```
    Description copied from interface: Versioned
    
    Method called to detect version of the component that implements this interface; returned version should never be null, but may return specific "not available" instance (see Version for details).
    
    Specified by:
    
    version in interface Versioned
  - configure
```
public final JsonFactory configure(JsonFactory.Feature f,
                                   boolean state)
```
    Method for enabling or disabling specified parser feature (check JsonParser.Feature for list of features)
  - enable
```
public JsonFactory enable(JsonFactory.Feature f)
```
    Method for enabling specified parser feature (check JsonFactory.Feature for list of features)
  - disable
```
public JsonFactory disable(JsonFactory.Feature f)
```
    Method for disabling specified parser features (check JsonFactory.Feature for list of features)
  - isEnabled
```
public final boolean isEnabled(JsonFactory.Feature f)
```
    Checked whether specified parser feature is enabled.
  - configure
```
public final JsonFactory configure(JsonParser.Feature f,
                                   boolean state)
```
    Method for enabling or disabling specified parser feature (check JsonParser.Feature for list of features)
  - enable
```
public JsonFactory enable(JsonParser.Feature f)
```
    Method for enabling specified parser feature (check JsonParser.Feature for list of features)
  - disable
```
public JsonFactory disable(JsonParser.Feature f)
```
    Method for disabling specified parser features (check JsonParser.Feature for list of features)
  - isEnabled
```
public final boolean isEnabled(JsonParser.Feature f)
```
    Checked whether specified parser feature is enabled.
  - getInputDecorator
```
public InputDecorator getInputDecorator()
```
    Method for getting currently configured input decorator (if any; there is no default decorator).
  - setInputDecorator
```
public JsonFactory setInputDecorator(InputDecorator d)
```
    Method for overriding currently configured input decorator
  - configure
```
public final JsonFactory configure(JsonGenerator.Feature f,
                                   boolean state)
```
    Method for enabling or disabling specified generator feature (check JsonGenerator.Feature for list of features)
  - enable
```
public JsonFactory enable(JsonGenerator.Feature f)
```
    Method for enabling specified generator features (check JsonGenerator.Feature for list of features)
  - disable
```
public JsonFactory disable(JsonGenerator.Feature f)
```
    Method for disabling specified generator feature (check JsonGenerator.Feature for list of features)
  - isEnabled
```
public final boolean isEnabled(JsonGenerator.Feature f)
```
    Check whether specified generator feature is enabled.
  - getCharacterEscapes
```
public CharacterEscapes getCharacterEscapes()
```
    Method for accessing custom escapes factory uses for JsonGenerators it creates.
  - setCharacterEscapes
```
public JsonFactory setCharacterEscapes(CharacterEscapes esc)
```
    Method for defining custom escapes factory uses for JsonGenerators it creates.
  - getOutputDecorator
```
public OutputDecorator getOutputDecorator()
```
    Method for getting currently configured output decorator (if any; there is no default decorator).
  - setOutputDecorator
```
public JsonFactory setOutputDecorator(OutputDecorator d)
```
    Method for overriding currently configured output decorator
  - setRootValueSeparator
```
public JsonFactory setRootValueSeparator(String sep)
```
    Method that allows overriding String used for separating root-level JSON values (default is single space character)
    
    Parameters:
    
    sep - Separator to use, if any; null means that no separator is automatically added
    
    Since:
    
    2.1
  - getRootValueSeparator
```
public String getRootValueSeparator()
```
    Since:
    
    2.1
  - setCodec
```
public JsonFactory setCodec(ObjectCodec oc)
```
    Method for associating a ObjectCodec (typically a com.fasterxml.jackson.databind.ObjectMapper) with this factory (and more importantly, parsers and generators it constructs). This is needed to use data-binding methods of JsonParser and JsonGenerator instances.
  - getCodec
```
public ObjectCodec getCodec()
```
  - createParser
```
public JsonParser createParser(File f)
                        throws IOException,
                               JsonParseException
```
    Method for constructing JSON parser instance to parse contents of specified file.
    Encoding is auto-detected from contents according to JSON specification recommended mechanism. Json specification supports only UTF-8, UTF-16 and UTF-32 as valid encodings, so auto-detection implemented only for this charsets. For other charsets use createParser(java.io.Reader).
    Underlying input stream (needed for reading contents) will be owned (and managed, i.e. closed as need be) by the parser, since caller has no access to it.
    
    Parameters:
    
    f - File that contains JSON content to parse
    
    Throws:
    
    IOException
    
    JsonParseException
    
    Since:
    
    2.1
  - createParser
```
public JsonParser createParser(URL url)
                        throws IOException,
                               JsonParseException
```
    Method for constructing JSON parser instance to parse contents of resource reference by given URL.
    Encoding is auto-detected from contents according to JSON specification recommended mechanism. Json specification supports only UTF-8, UTF-16 and UTF-32 as valid encodings, so auto-detection implemented only for this charsets. For other charsets use createParser(java.io.Reader).
    Underlying input stream (needed for reading contents) will be owned (and managed, i.e. closed as need be) by the parser, since caller has no access to it.
    
    Parameters:
    
    url - URL pointing to resource that contains JSON content to parse
    
    Throws:
    
    IOException
    
    JsonParseException
    
    Since:
    
    2.1
  - createParser
```
public JsonParser createParser(InputStream in)
                        throws IOException,
                               JsonParseException
```
    Method for constructing JSON parser instance to parse the contents accessed via specified input stream.
    The input stream will not be owned by the parser, it will still be managed (i.e. closed if end-of-stream is reacher, or parser close method called) if (and only if) JsonParser.Feature.AUTO_CLOSE_SOURCE is enabled.
    Note: no encoding argument is taken since it can always be auto-detected as suggested by JSON RFC. Json specification supports only UTF-8, UTF-16 and UTF-32 as valid encodings, so auto-detection implemented only for this charsets. For other charsets use createParser(java.io.Reader).
    
    Parameters:
    
    in - InputStream to use for reading JSON content to parse
    
    Throws:
    
    IOException
    
    JsonParseException
    
    Since:
    
    2.1
  - createParser
```
public JsonParser createParser(Reader r)
                        throws IOException,
                               JsonParseException
```
    Method for constructing parser for parsing the contents accessed via specified Reader.
    The read stream will not be owned by the parser, it will still be managed (i.e. closed if end-of-stream is reacher, or parser close method called) if (and only if) JsonParser.Feature.AUTO_CLOSE_SOURCE is enabled.
    
    Parameters:
    
    r - Reader to use for reading JSON content to parse
    
    Throws:
    
    IOException
    
    JsonParseException
    
    Since:
    
    2.1
  - createParser
```
public JsonParser createParser(byte[] data)
                        throws IOException,
                               JsonParseException
```
    Method for constructing parser for parsing the contents of given byte array.
    
    Throws:
    
    IOException
    
    JsonParseException
    
    Since:
    
    2.1
  - createParser
```
public JsonParser createParser(byte[] data,
                               int offset,
                               int len)
                        throws IOException,
                               JsonParseException
```
    Method for constructing parser for parsing the contents of given byte array.
    
    Parameters:
    
    data - Buffer that contains data to parse
    
    offset - Offset of the first data byte within buffer
    
    len - Length of contents to parse within buffer
    
    Throws:
    
    IOException
    
    JsonParseException
    
    Since:
    
    2.1
  - createParser
```
public JsonParser createParser(String content)
                        throws IOException,
                               JsonParseException
```
    Method for constructing parser for parsing contents of given String.
    
    Throws:
    
    IOException
    
    JsonParseException
    
    Since:
    
    2.1
  - createParser
```
public JsonParser createParser(char[] content)
                        throws IOException
```
    Method for constructing parser for parsing contents of given char array.
    
    Throws:
    
    IOException
    
    Since:
    
    2.4
  - createParser
```
public JsonParser createParser(char[] content,
                               int offset,
                               int len)
                        throws IOException
```
    Method for constructing parser for parsing contents of given char array.
    
    Throws:
    
    IOException
    
    Since:
    
    2.4
  - createParser
```
public JsonParser createParser(DataInput in)
                        throws IOException
```
    Optional method for constructing parser for reading contents from specified DataInput instance.
    If this factory does not support DataInput as source, will throw UnsupportedOperationException
    
    Throws:
    
    IOException
    
    Since:
    
    2.8
  - createNonBlockingByteArrayParser
```
public JsonParser createNonBlockingByteArrayParser()
                                            throws IOException
```
    Optional method for constructing parser for non-blocking parsing via ByteArrayFeeder interface (accessed using JsonParser.getNonBlockingInputFeeder() from constructed instance).
    If this factory does not support non-blocking parsing (either at all, or from byte array), will throw UnsupportedOperationException
    
    Throws:
    
    IOException
    
    Since:
    
    2.9
  - createJsonParser
```
@Deprecated
public JsonParser createJsonParser(File f)
                                        throws IOException,
                                               JsonParseException
```
    Deprecated. Since 2.2, use createParser(File) instead.
    
    Method for constructing JSON parser instance to parse contents of specified file.
    Encoding is auto-detected from contents according to JSON specification recommended mechanism. Json specification supports only UTF-8, UTF-16 and UTF-32 as valid encodings, so auto-detection implemented only for this charsets. For other charsets use createParser(java.io.Reader).
    Underlying input stream (needed for reading contents) will be owned (and managed, i.e. closed as need be) by the parser, since caller has no access to it.
    
    Parameters:
    
    f - File that contains JSON content to parse
    
    Throws:
    
    IOException
    
    JsonParseException
  - createJsonParser
```
@Deprecated
public JsonParser createJsonParser(URL url)
                                        throws IOException,
                                               JsonParseException
```
    Deprecated. Since 2.2, use createParser(URL) instead.
    
    Method for constructing JSON parser instance to parse contents of resource reference by given URL.
    Encoding is auto-detected from contents according to JSON specification recommended mechanism. Json specification supports only UTF-8, UTF-16 and UTF-32 as valid encodings, so auto-detection implemented only for this charsets. For other charsets use createParser(java.io.Reader).
    Underlying input stream (needed for reading contents) will be owned (and managed, i.e. closed as need be) by the parser, since caller has no access to it.
    
    Parameters:
    
    url - URL pointing to resource that contains JSON content to parse
    
    Throws:
    
    IOException
    
    JsonParseException
  - createJsonParser
```
@Deprecated
public JsonParser createJsonParser(InputStream in)
                                        throws IOException,
                                               JsonParseException
```
    Deprecated. Since 2.2, use createParser(InputStream) instead.
    
    Method for constructing JSON parser instance to parse the contents accessed via specified input stream.
    The input stream will not be owned by the parser, it will still be managed (i.e. closed if end-of-stream is reacher, or parser close method called) if (and only if) JsonParser.Feature.AUTO_CLOSE_SOURCE is enabled.
    Note: no encoding argument is taken since it can always be auto-detected as suggested by JSON RFC. Json specification supports only UTF-8, UTF-16 and UTF-32 as valid encodings, so auto-detection implemented only for this charsets. For other charsets use createParser(java.io.Reader).
    
    Parameters:
    
    in - InputStream to use for reading JSON content to parse
    
    Throws:
    
    IOException
    
    JsonParseException
  - createJsonParser
```
@Deprecated
public JsonParser createJsonParser(Reader r)
                                        throws IOException,
                                               JsonParseException
```
    Deprecated. Since 2.2, use createParser(Reader) instead.
    
    Method for constructing parser for parsing the contents accessed via specified Reader.
    The read stream will not be owned by the parser, it will still be managed (i.e. closed if end-of-stream is reacher, or parser close method called) if (and only if) JsonParser.Feature.AUTO_CLOSE_SOURCE is enabled.
    
    Parameters:
    
    r - Reader to use for reading JSON content to parse
    
    Throws:
    
    IOException
    
    JsonParseException
  - createJsonParser
```
@Deprecated
public JsonParser createJsonParser(byte[] data)
                                        throws IOException,
                                               JsonParseException
```
    Deprecated. Since 2.2, use createParser(byte[]) instead.
    
    Method for constructing parser for parsing the contents of given byte array.
    
    Throws:
    
    IOException
    
    JsonParseException
  - createJsonParser
```
@Deprecated
public JsonParser createJsonParser(byte[] data,
                                               int offset,
                                               int len)
                                        throws IOException,
                                               JsonParseException
```
    Deprecated. Since 2.2, use createParser(byte[],int,int) instead.
    
    Method for constructing parser for parsing the contents of given byte array.
    
    Parameters:
    
    data - Buffer that contains data to parse
    
    offset - Offset of the first data byte within buffer
    
    len - Length of contents to parse within buffer
    
    Throws:
    
    IOException
    
    JsonParseException
  - createJsonParser
```
@Deprecated
public JsonParser createJsonParser(String content)
                                        throws IOException,
                                               JsonParseException
```
    Deprecated. Since 2.2, use createParser(String) instead.
    
    Method for constructing parser for parsing contents of given String.
    
    Throws:
    
    IOException
    
    JsonParseException
  - createGenerator
```
public JsonGenerator createGenerator(OutputStream out,
                                     JsonEncoding enc)
                              throws IOException
```
    Method for constructing JSON generator for writing JSON content using specified output stream. Encoding to use must be specified, and needs to be one of available types (as per JSON specification).
    Underlying stream is NOT owned by the generator constructed, so that generator will NOT close the output stream when JsonGenerator.close() is called (unless auto-closing feature, JsonGenerator.Feature.AUTO_CLOSE_TARGET is enabled). Using application needs to close it explicitly if this is the case.
    Note: there are formats that use fixed encoding (like most binary data formats) and that ignore passed in encoding.
    
    Parameters:
    
    out - OutputStream to use for writing JSON content
    
    enc - Character encoding to use
    
    Throws:
    
    IOException
    
    Since:
    
    2.1
  - createGenerator
```
public JsonGenerator createGenerator(OutputStream out)
                              throws IOException
```
    Convenience method for constructing generator that uses default encoding of the format (UTF-8 for JSON and most other data formats).
    Note: there are formats that use fixed encoding (like most binary data formats).
    
    Throws:
    
    IOException
    
    Since:
    
    2.1
  - createGenerator
```
public JsonGenerator createGenerator(Writer w)
                              throws IOException
```
    Method for constructing JSON generator for writing JSON content using specified Writer.
    Underlying stream is NOT owned by the generator constructed, so that generator will NOT close the Reader when JsonGenerator.close() is called (unless auto-closing feature, JsonGenerator.Feature.AUTO_CLOSE_TARGET is enabled). Using application needs to close it explicitly.
    
    Parameters:
    
    w - Writer to use for writing JSON content
    
    Throws:
    
    IOException
    
    Since:
    
    2.1
  - createGenerator
```
public JsonGenerator createGenerator(File f,
                                     JsonEncoding enc)
                              throws IOException
```
    Method for constructing JSON generator for writing JSON content to specified file, overwriting contents it might have (or creating it if such file does not yet exist). Encoding to use must be specified, and needs to be one of available types (as per JSON specification).
    Underlying stream is owned by the generator constructed, i.e. generator will handle closing of file when JsonGenerator.close() is called.
    
    Parameters:
    
    f - File to write contents to
    
    enc - Character encoding to use
    
    Throws:
    
    IOException
    
    Since:
    
    2.1
  - createGenerator
```
public JsonGenerator createGenerator(DataOutput out,
                                     JsonEncoding enc)
                              throws IOException
```
    Method for constructing generator for writing content using specified DataOutput instance.
    
    Throws:
    
    IOException
    
    Since:
    
    2.8
  - createGenerator
```
public JsonGenerator createGenerator(DataOutput out)
                              throws IOException
```
    Convenience method for constructing generator that uses default encoding of the format (UTF-8 for JSON and most other data formats).
    Note: there are formats that use fixed encoding (like most binary data formats).
    
    Throws:
    
    IOException
    
    Since:
    
    2.8
  - createJsonGenerator
```
@Deprecated
public JsonGenerator createJsonGenerator(OutputStream out,
                                                     JsonEncoding enc)
                                              throws IOException
```
    Deprecated. Since 2.2, use createGenerator(OutputStream, JsonEncoding) instead.
    
    Method for constructing JSON generator for writing JSON content using specified output stream. Encoding to use must be specified, and needs to be one of available types (as per JSON specification).
    Underlying stream is NOT owned by the generator constructed, so that generator will NOT close the output stream when JsonGenerator.close() is called (unless auto-closing feature, JsonGenerator.Feature.AUTO_CLOSE_TARGET is enabled). Using application needs to close it explicitly if this is the case.
    Note: there are formats that use fixed encoding (like most binary data formats) and that ignore passed in encoding.
    
    Parameters:
    
    out - OutputStream to use for writing JSON content
    
    enc - Character encoding to use
    
    Throws:
    
    IOException
  - createJsonGenerator
```
@Deprecated
public JsonGenerator createJsonGenerator(Writer out)
                                              throws IOException
```
    Deprecated. Since 2.2, use createGenerator(Writer) instead.
    
    Method for constructing JSON generator for writing JSON content using specified Writer.
    Underlying stream is NOT owned by the generator constructed, so that generator will NOT close the Reader when JsonGenerator.close() is called (unless auto-closing feature, JsonGenerator.Feature.AUTO_CLOSE_TARGET is enabled). Using application needs to close it explicitly.
    
    Parameters:
    
    out - Writer to use for writing JSON content
    
    Throws:
    
    IOException
  - createJsonGenerator
```
@Deprecated
public JsonGenerator createJsonGenerator(OutputStream out)
                                              throws IOException
```
    Deprecated. Since 2.2, use createGenerator(OutputStream) instead.
    
    Convenience method for constructing generator that uses default encoding of the format (UTF-8 for JSON and most other data formats).
    Note: there are formats that use fixed encoding (like most binary data formats).
    
    Throws:
    
    IOException
  - _createParser
```
protected JsonParser _createParser(InputStream in,
                                   IOContext ctxt)
                            throws IOException
```
    Overridable factory method that actually instantiates desired parser given InputStream and context object.
    This method is specifically designed to remain compatible between minor versions so that sub-classes can count on it being called as expected. That is, it is part of official interface from sub-class perspective, although not a public method available to users of factory implementations.
    
    Throws:
    
    IOException
    
    Since:
    
    2.1
  - _createParser
```
protected JsonParser _createParser(Reader r,
                                   IOContext ctxt)
                            throws IOException
```
    Overridable factory method that actually instantiates parser using given Reader object for reading content.
    This method is specifically designed to remain compatible between minor versions so that sub-classes can count on it being called as expected. That is, it is part of official interface from sub-class perspective, although not a public method available to users of factory implementations.
    
    Throws:
    
    IOException
    
    Since:
    
    2.1
  - _createParser
```
protected JsonParser _createParser(char[] data,
                                   int offset,
                                   int len,
                                   IOContext ctxt,
                                   boolean recyclable)
                            throws IOException
```
    Overridable factory method that actually instantiates parser using given char[] object for accessing content.
    
    Throws:
    
    IOException
    
    Since:
    
    2.4
  - _createParser
```
protected JsonParser _createParser(byte[] data,
                                   int offset,
                                   int len,
                                   IOContext ctxt)
                            throws IOException
```
    Overridable factory method that actually instantiates parser using given Reader object for reading content passed as raw byte array.
    This method is specifically designed to remain compatible between minor versions so that sub-classes can count on it being called as expected. That is, it is part of official interface from sub-class perspective, although not a public method available to users of factory implementations.
    
    Throws:
    
    IOException
  - _createParser
```
protected JsonParser _createParser(DataInput input,
                                   IOContext ctxt)
                            throws IOException
```
    Optional factory method, expected to be overridden
    
    Throws:
    
    IOException
    
    Since:
    
    2.8
  - _createGenerator
```
protected JsonGenerator _createGenerator(Writer out,
                                         IOContext ctxt)
                                  throws IOException
```
    Overridable factory method that actually instantiates generator for given Writer and context object.
    This method is specifically designed to remain compatible between minor versions so that sub-classes can count on it being called as expected. That is, it is part of official interface from sub-class perspective, although not a public method available to users of factory implementations.
    
    Throws:
    
    IOException
  - _createUTF8Generator
```
protected JsonGenerator _createUTF8Generator(OutputStream out,
                                             IOContext ctxt)
                                      throws IOException
```
    Overridable factory method that actually instantiates generator for given OutputStream and context object, using UTF-8 encoding.
    This method is specifically designed to remain compatible between minor versions so that sub-classes can count on it being called as expected. That is, it is part of official interface from sub-class perspective, although not a public method available to users of factory implementations.
    
    Throws:
    
    IOException
  - _createWriter
```
protected Writer _createWriter(OutputStream out,
                               JsonEncoding enc,
                               IOContext ctxt)
                        throws IOException
```
    Throws:
    
    IOException
  - _decorate
```
protected final InputStream _decorate(InputStream in,
                                      IOContext ctxt)
                               throws IOException
```
    Throws:
    
    IOException
    
    Since:
    
    2.4
  - _decorate
```
protected final Reader _decorate(Reader in,
                                 IOContext ctxt)
                          throws IOException
```
    Throws:
    
    IOException
    
    Since:
    
    2.4
  - _decorate
```
protected final DataInput _decorate(DataInput in,
                                    IOContext ctxt)
                             throws IOException
```
    Throws:
    
    IOException
    
    Since:
    
    2.8
  - _decorate
```
protected final OutputStream _decorate(OutputStream out,
                                       IOContext ctxt)
                                throws IOException
```
    Throws:
    
    IOException
    
    Since:
    
    2.4
  - _decorate
```
protected final Writer _decorate(Writer out,
                                 IOContext ctxt)
                          throws IOException
```
    Throws:
    
    IOException
    
    Since:
    
    2.4
  - _getBufferRecycler
```
public BufferRecycler _getBufferRecycler()
```
    Method used by factory to create buffer recycler instances for parsers and generators.
    Note: only public to give access for ObjectMapper
  - _createContext
```
protected IOContext _createContext(Object srcRef,
                                   boolean resourceManaged)
```
    Overridable factory method that actually instantiates desired context object.
  - _createDataOutputWrapper
```
protected OutputStream _createDataOutputWrapper(DataOutput out)
```
    Since:
    
    2.8
  - _optimizedStreamFromURL
```
protected InputStream _optimizedStreamFromURL(URL url)
                                       throws IOException
```
    Helper methods used for constructing an optimal stream for parsers to use, when input is to be read from an URL. This helps when reading file content via URL.
    
    Throws:
    
    IOException

Class JsonFactory

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

FORMAT_NAME_JSON

DEFAULT_FACTORY_FEATURE_FLAGS

DEFAULT_PARSER_FEATURE_FLAGS

DEFAULT_GENERATOR_FEATURE_FLAGS

_rootCharSymbols

_byteSymbolCanonicalizer

_objectCodec

_factoryFeatures

_parserFeatures

_generatorFeatures

_characterEscapes

_inputDecorator

_outputDecorator

_rootValueSeparator

Constructor Detail

JsonFactory

JsonFactory

JsonFactory

Method Detail

copy

_checkInvalidCopy

readResolve

requiresPropertyOrdering

canHandleBinaryNatively

canUseCharArrays

canParseAsync

getFormatReadFeatureType

getFormatWriteFeatureType

canUseSchema

getFormatName

hasFormat

requiresCustomCodec

hasJSONFormat

version

configure

enable

disable

isEnabled

configure

enable

disable

isEnabled

getInputDecorator

setInputDecorator

configure

enable

disable

isEnabled

getCharacterEscapes

setCharacterEscapes

getOutputDecorator

setOutputDecorator

setRootValueSeparator

getRootValueSeparator

setCodec

getCodec

createParser

createParser

createParser

createParser

createParser

createParser

createParser

createParser

createParser

createParser

createNonBlockingByteArrayParser

createJsonParser

createJsonParser

createJsonParser

createJsonParser

createJsonParser

createJsonParser