JsonParserDelegate (jackson-core 2.9.5)

java.lang.Object
- com.fasterxml.jackson.core.JsonParser
- - com.fasterxml.jackson.core.util.JsonParserDelegate

All Implemented Interfaces:

Versioned, Closeable, AutoCloseable

Direct Known Subclasses:

FilteringParserDelegate, JsonParserSequence
```
public class JsonParserDelegate
extends JsonParser
```
Helper class that implements delegation pattern for JsonParser, to allow for simple overridability of basic parsing functionality. The idea is that any functionality to be modified can be simply overridden; and anything else will be delegated by default.

Nested Class Summary
- Nested classes/interfaces inherited from class com.fasterxml.jackson.core.JsonParser
  JsonParser.Feature, JsonParser.NumberType

Field Summary

Fields
Modifier and Type Field and Description

protected JsonParser delegate
Delegate object that method calls are delegated to.
- Fields inherited from class com.fasterxml.jackson.core.JsonParser
  _features, _requestPayload

Fields
Modifier and Type	Field and Description
`protected JsonParser`	`delegate` Delegate object that method calls are delegated to.

Constructor Summary

Constructors
Constructor and Description

JsonParserDelegate(JsonParser d)

Constructors
Constructor and Description
`JsonParserDelegate(JsonParser d)`

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`boolean`	`canReadObjectId()` Introspection method that may be called to see if the underlying data format supports some kind of Object Ids natively (many do not; for example, JSON doesn't).
`boolean`	`canReadTypeId()` Introspection method that may be called to see if the underlying data format supports some kind of Type Ids natively (many do not; for example, JSON doesn't).
`boolean`	`canUseSchema(FormatSchema schema)` Method that can be used to verify that given schema can be used with this parser (using `JsonParser.setSchema(com.fasterxml.jackson.core.FormatSchema)`).
`void`	`clearCurrentToken()` Method called to "consume" the current token by effectively removing it so that `JsonParser.hasCurrentToken()` returns false, and `JsonParser.getCurrentToken()` null).
`void`	`close()` Closes the parser so that no further iteration or data access can be made; will also close the underlying input source if parser either owns the input source, or feature `JsonParser.Feature.AUTO_CLOSE_SOURCE` is enabled.
`JsonToken`	`currentToken()` Accessor to find which token parser currently points to, if any; null will be returned if none.
`int`	`currentTokenId()` Method similar to `JsonParser.getCurrentToken()` but that returns an `int` instead of `JsonToken` (enum value).
`JsonParser`	`disable(JsonParser.Feature f)` Method for disabling specified feature (check `JsonParser.Feature` for list of features)
`JsonParser`	`enable(JsonParser.Feature f)` Method for enabling specified parser feature (check `JsonParser.Feature` for list of features)
`void`	`finishToken()` Method that may be used to force full handling of the current token so that even if lazy processing is enabled, the whole contents are read for possible retrieval.
`BigInteger`	`getBigIntegerValue()` Numeric accessor that can be called when the current token is of type `JsonToken.VALUE_NUMBER_INT` and it can not be used as a Java long primitive type due to its magnitude.
`byte[]`	`getBinaryValue(Base64Variant b64variant)` Method that can be used to read (and consume -- results may not be accessible using other methods after the call) base64-encoded binary data included in the current textual JSON value.
`boolean`	`getBooleanValue()` Convenience accessor that can be called when the current token is `JsonToken.VALUE_TRUE` or `JsonToken.VALUE_FALSE`.
`byte`	`getByteValue()` Numeric accessor that can be called when the current token is of type `JsonToken.VALUE_NUMBER_INT` and it can be expressed as a value of Java byte primitive type.
`ObjectCodec`	`getCodec()` Accessor for `ObjectCodec` associated with this parser, if any.
`JsonLocation`	`getCurrentLocation()` Method that returns location of the last processed character; usually for error reporting purposes.
`String`	`getCurrentName()` Method that can be called to get the name associated with the current token: for `JsonToken.FIELD_NAME`s it will be the same as what `JsonParser.getText()` returns; for field values it will be preceding field name; and for others (array values, root-level values) null.
`JsonToken`	`getCurrentToken()` Alias for `JsonParser.currentToken()`, will be deprecated in Jackson 2.9
`int`	`getCurrentTokenId()` Alias for `JsonParser.currentTokenId()`, will be deprecated in Jackson 2.9
`Object`	`getCurrentValue()` Helper method, usually equivalent to: `getParsingContext().getCurrentValue();`
`BigDecimal`	`getDecimalValue()` Numeric accessor that can be called when the current token is of type `JsonToken.VALUE_NUMBER_FLOAT` or `JsonToken.VALUE_NUMBER_INT`.
`double`	`getDoubleValue()` Numeric accessor that can be called when the current token is of type `JsonToken.VALUE_NUMBER_FLOAT` and it can be expressed as a Java double primitive type.
`Object`	`getEmbeddedObject()` Accessor that can be called if (and only if) the current token is `JsonToken.VALUE_EMBEDDED_OBJECT`.
`int`	`getFeatureMask()` Bulk access method for getting state of all standard `JsonParser.Feature`s.
`float`	`getFloatValue()` Numeric accessor that can be called when the current token is of type `JsonToken.VALUE_NUMBER_FLOAT` and it can be expressed as a Java float primitive type.
`Object`	`getInputSource()` Method that can be used to get access to object that is used to access input being parsed; this is usually either `InputStream` or `Reader`, depending on what parser was constructed with.
`int`	`getIntValue()` Numeric accessor that can be called when the current token is of type `JsonToken.VALUE_NUMBER_INT` and it can be expressed as a value of Java int primitive type.
`JsonToken`	`getLastClearedToken()` Method that can be called to get the last token that was cleared using `JsonParser.clearCurrentToken()`.
`long`	`getLongValue()` Numeric accessor that can be called when the current token is of type `JsonToken.VALUE_NUMBER_INT` and it can be expressed as a Java long primitive type.
`JsonParser.NumberType`	`getNumberType()` If current token is of type `JsonToken.VALUE_NUMBER_INT` or `JsonToken.VALUE_NUMBER_FLOAT`, returns one of `JsonParser.NumberType` constants; otherwise returns null.
`Number`	`getNumberValue()` Generic number value accessor method that will work for all kinds of numeric values.
`Object`	`getObjectId()` Method that can be called to check whether current token (one that was just read) has an associated Object id, and if so, return it.
`JsonStreamContext`	`getParsingContext()` Method that can be used to access current parsing context reader is in.
`FormatSchema`	`getSchema()` Method for accessing Schema that this parser uses, if any.
`short`	`getShortValue()` Numeric accessor that can be called when the current token is of type `JsonToken.VALUE_NUMBER_INT` and it can be expressed as a value of Java short primitive type.
`String`	`getText()` Method for accessing textual representation of the current token; if no current token (before first call to `JsonParser.nextToken()`, or after encountering end-of-input), returns null.
`int`	`getText(Writer writer)` Method to read the textual representation of the current token in chunks and pass it to the given Writer.
`char[]`	`getTextCharacters()` Method similar to `JsonParser.getText()`, but that will return underlying (unmodifiable) character array that contains textual value, instead of constructing a String object to contain this information.
`int`	`getTextLength()` Accessor used with `JsonParser.getTextCharacters()`, to know length of String stored in returned buffer.
`int`	`getTextOffset()` Accessor used with `JsonParser.getTextCharacters()`, to know offset of the first text content character within buffer.
`JsonLocation`	`getTokenLocation()` Method that return the starting location of the current token; that is, position of the first character from input that starts the current token.
`Object`	`getTypeId()` Method that can be called to check whether current token (one that was just read) has an associated type id, and if so, return it.
`boolean`	`getValueAsBoolean()` Method that will try to convert value of current token to a boolean.
`boolean`	`getValueAsBoolean(boolean defaultValue)` Method that will try to convert value of current token to a boolean.
`double`	`getValueAsDouble()` Method that will try to convert value of current token to a Java double.
`double`	`getValueAsDouble(double defaultValue)` Method that will try to convert value of current token to a Java double.
`int`	`getValueAsInt()` Method that will try to convert value of current token to a int.
`int`	`getValueAsInt(int defaultValue)` Method that will try to convert value of current token to a int.
`long`	`getValueAsLong()` Method that will try to convert value of current token to a long.
`long`	`getValueAsLong(long defaultValue)` Method that will try to convert value of current token to a long.
`String`	`getValueAsString()` Method that will try to convert value of current token to a `String`.
`String`	`getValueAsString(String defaultValue)` Method that will try to convert value of current token to a `String`.
`boolean`	`hasCurrentToken()` Method for checking whether parser currently points to a token (and data for that token is available).
`boolean`	`hasTextCharacters()` Method that can be used to determine whether calling of `JsonParser.getTextCharacters()` would be the most efficient way to access textual content for the event parser currently points to.
`boolean`	`hasToken(JsonToken t)` Method that is functionally equivalent to: `return currentToken() == t` but may be more efficiently implemented.
`boolean`	`hasTokenId(int id)` Method that is functionally equivalent to: `return currentTokenId() == id` but may be more efficiently implemented.
`boolean`	`isClosed()` Method that can be called to determine whether this parser is closed or not.
`boolean`	`isEnabled(JsonParser.Feature f)` Method for checking whether specified `JsonParser.Feature` is enabled.
`boolean`	`isExpectedStartArrayToken()` Specialized accessor that can be used to verify that the current token indicates start array (usually meaning that current token is `JsonToken.START_ARRAY`) when start array is expected.
`boolean`	`isExpectedStartObjectToken()` Similar to `JsonParser.isExpectedStartArrayToken()`, but checks whether stream currently points to `JsonToken.START_OBJECT`.
`boolean`	`isNaN()` Access for checking whether current token is a numeric value token, but one that is of "not-a-number" (NaN) variety (including both "NaN" AND positive/negative infinity!): not supported by all formats, but often supported for `JsonToken.VALUE_NUMBER_FLOAT`.
`JsonToken`	`nextToken()` Main iteration method, which will advance stream enough to determine type of the next token, if any.
`JsonToken`	`nextValue()` Iteration method that will advance stream enough to determine type of the next token that is a value type (including JSON Array and Object start/end markers).
`void`	`overrideCurrentName(String name)` Method that can be used to change what is considered to be the current (field) name.
`JsonParser`	`overrideFormatFeatures(int values, int mask)` Bulk set method for (re)setting states of `FormatFeature`s, by specifying values (set / clear) along with a mask, to determine which features to change, if any.
`JsonParser`	`overrideStdFeatures(int values, int mask)` Bulk set method for (re)setting states of features specified by `mask`.
`int`	`readBinaryValue(Base64Variant b64variant, OutputStream out)` Similar to `JsonParser.readBinaryValue(OutputStream)` but allows explicitly specifying base64 variant to use.
`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`).
`void`	`setCodec(ObjectCodec c)` Setter that allows defining `ObjectCodec` associated with this parser, if any.
`void`	`setCurrentValue(Object v)` Helper method, usually equivalent to: `getParsingContext().setCurrentValue(v);`
`JsonParser`	`setFeatureMask(int mask)` Deprecated.
`void`	`setSchema(FormatSchema schema)` Method to call to make this parser use specified schema.
`JsonParser`	`skipChildren()` Method that will skip all child tokens of an array or object token that the parser currently points to, iff stream points to `JsonToken.START_OBJECT` or `JsonToken.START_ARRAY`.
`Version`	`version()` Accessor for getting version of the core package, given a parser instance.

Methods inherited from class com.fasterxml.jackson.core.JsonParser
_codec, _constructError, _reportUnsupportedOperation, canParseAsync, configure, currentName, getBinaryValue, getFormatFeatures, getNonBlockingInputFeeder, nextBooleanValue, nextFieldName, nextFieldName, nextIntValue, nextLongValue, nextTextValue, readBinaryValue, readValueAs, readValueAs, readValueAsTree, readValuesAs, readValuesAs, releaseBuffered, releaseBuffered, setRequestPayloadOnError, setRequestPayloadOnError, setRequestPayloadOnError

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

- Field Detail
  - delegate
```
protected JsonParser delegate
```
    Delegate object that method calls are delegated to.
- Constructor Detail
  - JsonParserDelegate
```
public JsonParserDelegate(JsonParser d)
```
- Method Detail
  - getCurrentValue
```
public Object getCurrentValue()
```
    Description copied from class: JsonParser
    
    Helper method, usually equivalent to: getParsingContext().getCurrentValue();
    Note that "current value" is NOT populated (or used) by Streaming parser; it is only used by higher-level data-binding functionality. The reason it is included here is that it can be stored and accessed hierarchically, and gets passed through data-binding.
    
    Overrides:
    
    getCurrentValue in class JsonParser
  - setCurrentValue
```
public void setCurrentValue(Object v)
```
    Description copied from class: JsonParser
    
    Helper method, usually equivalent to: getParsingContext().setCurrentValue(v);
    
    Overrides:
    
    setCurrentValue in class JsonParser
  - setCodec
```
public void setCodec(ObjectCodec c)
```
    Description copied from class: JsonParser
    
    Setter that allows defining ObjectCodec associated with this parser, if any. Codec is used by JsonParser.readValueAs(Class) method (and its variants).
    
    Specified by:
    
    setCodec in class JsonParser
  - getCodec
```
public ObjectCodec getCodec()
```
    Description copied from class: JsonParser
    
    Accessor for ObjectCodec associated with this parser, if any. Codec is used by JsonParser.readValueAs(Class) method (and its variants).
    
    Specified by:
    
    getCodec in class JsonParser
  - enable
```
public JsonParser enable(JsonParser.Feature f)
```
    Description copied from class: JsonParser
    
    Method for enabling specified parser feature (check JsonParser.Feature for list of features)
    
    Overrides:
    
    enable in class JsonParser
  - disable
```
public JsonParser disable(JsonParser.Feature f)
```
    Description copied from class: JsonParser
    
    Method for disabling specified feature (check JsonParser.Feature for list of features)
    
    Overrides:
    
    disable in class JsonParser
  - isEnabled
```
public boolean isEnabled(JsonParser.Feature f)
```
    Description copied from class: JsonParser
    
    Method for checking whether specified JsonParser.Feature is enabled.
    
    Overrides:
    
    isEnabled in class JsonParser
  - getFeatureMask
```
public int getFeatureMask()
```
    Description copied from class: JsonParser
    
    Bulk access method for getting state of all standard JsonParser.Features.
    
    Overrides:
    
    getFeatureMask in class JsonParser
    
    Returns:
    
    Bit mask that defines current states of all standard JsonParser.Features.
  - setFeatureMask
```
@Deprecated
public JsonParser setFeatureMask(int mask)
```
    Deprecated.
    
    Description copied from class: JsonParser
    
    Bulk set method for (re)setting states of all standard JsonParser.Features
    
    Overrides:
    
    setFeatureMask in class JsonParser
    
    Returns:
    
    This parser object, to allow chaining of calls
  - overrideStdFeatures
```
public JsonParser overrideStdFeatures(int values,
                                      int mask)
```
    Description copied from class: JsonParser
    
    Bulk set method for (re)setting states of features specified by mask. Functionally equivalent to int oldState = getFeatureMask(); int newState = (oldState & ~mask) | (values & mask); setFeatureMask(newState); but preferred as this lets caller more efficiently specify actual changes made.
    
    Overrides:
    
    overrideStdFeatures in class JsonParser
    
    Parameters:
    
    values - Bit mask of set/clear state for features to change
    
    mask - Bit mask of features to change
  - overrideFormatFeatures
```
public JsonParser overrideFormatFeatures(int values,
                                         int mask)
```
    Description copied from class: JsonParser
    
    Bulk set method for (re)setting states of FormatFeatures, by specifying values (set / clear) along with a mask, to determine which features to change, if any.
    Default implementation will simply throw an exception to indicate that the generator implementation does not support any FormatFeatures.
    
    Overrides:
    
    overrideFormatFeatures in class JsonParser
    
    Parameters:
    
    values - Bit mask of set/clear state for features to change
    
    mask - Bit mask of features to change
  - getSchema
```
public FormatSchema getSchema()
```
    Description copied from class: JsonParser
    
    Method for accessing Schema that this parser uses, if any. Default implementation returns null.
    
    Overrides:
    
    getSchema in class JsonParser
  - setSchema
```
public void setSchema(FormatSchema schema)
```
    Description copied from class: JsonParser
    
    Method to call to make this parser use specified schema. Method must be called before trying to parse any content, right after parser instance has been created. Note that not all parsers support schemas; and those that do usually only accept specific types of schemas: ones defined for data format parser can read.
    If parser does not support specified schema, UnsupportedOperationException is thrown.
    
    Overrides:
    
    setSchema in class JsonParser
    
    Parameters:
    
    schema - Schema to use
  - canUseSchema
```
public boolean canUseSchema(FormatSchema schema)
```
    Description copied from class: JsonParser
    
    Method that can be used to verify that given schema can be used with this parser (using JsonParser.setSchema(com.fasterxml.jackson.core.FormatSchema)).
    
    Overrides:
    
    canUseSchema in class JsonParser
    
    Parameters:
    
    schema - Schema to check
    
    Returns:
    
    True if this parser can use given schema; false if not
  - version
```
public Version version()
```
    Description copied from class: JsonParser
    
    Accessor for getting version of the core package, given a parser instance. Left for sub-classes to implement.
    
    Specified by:
    
    version in interface Versioned
    
    Specified by:
    
    version in class JsonParser
  - getInputSource
```
public Object getInputSource()
```
    Description copied from class: JsonParser
    
    Method that can be used to get access to object that is used to access input being parsed; this is usually either InputStream or Reader, depending on what parser was constructed with. Note that returned value may be null in some cases; including case where parser implementation does not want to exposed raw source to caller. In cases where input has been decorated, object returned here is the decorated version; this allows some level of interaction between users of parser and decorator object.
    In general use of this accessor should be considered as "last effort", i.e. only used if no other mechanism is applicable.
    
    Overrides:
    
    getInputSource in class JsonParser
  - requiresCustomCodec
```
public boolean requiresCustomCodec()
```
    Description copied from class: JsonParser
    
    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).
    
    Overrides:
    
    requiresCustomCodec in class JsonParser
    
    Returns:
    
    True if custom codec is needed with parsers and generators created by this factory; false if a general ObjectCodec is enough
  - close
```
public void close()
           throws IOException
```
    Description copied from class: JsonParser
    
    Closes the parser so that no further iteration or data access can be made; will also close the underlying input source if parser either owns the input source, or feature JsonParser.Feature.AUTO_CLOSE_SOURCE is enabled. Whether parser owns the input source depends on factory method that was used to construct instance (so check JsonFactory for details, but the general idea is that if caller passes in closable resource (such as InputStream or Reader) parser does NOT own the source; but if it passes a reference (such as File or URL and creates stream or reader it does own them.
    
    Specified by:
    
    close in interface Closeable
    
    Specified by:
    
    close in interface AutoCloseable
    
    Specified by:
    
    close in class JsonParser
    
    Throws:
    
    IOException
  - isClosed
```
public boolean isClosed()
```
    Description copied from class: JsonParser
    
    Method that can be called to determine whether this parser is closed or not. If it is closed, no new tokens can be retrieved by calling JsonParser.nextToken() (and the underlying stream may be closed). Closing may be due to an explicit call to JsonParser.close() or because parser has encountered end of input.
    
    Specified by:
    
    isClosed in class JsonParser
  - currentToken
```
public JsonToken currentToken()
```
    Description copied from class: JsonParser
    
    Accessor to find which token parser currently points to, if any; null will be returned if none. If return value is non-null, data associated with the token is available via other accessor methods.
    
    Overrides:
    
    currentToken in class JsonParser
    
    Returns:
    
    Type of the token this parser currently points to, if any: null before any tokens have been read, and after end-of-input has been encountered, as well as if the current token has been explicitly cleared.
  - currentTokenId
```
public int currentTokenId()
```
    Description copied from class: JsonParser
    
    Method similar to JsonParser.getCurrentToken() but that returns an int instead of JsonToken (enum value).
    Use of int directly is typically more efficient on switch statements, so this method may be useful when building low-overhead codecs. Note, however, that effect may not be big enough to matter: make sure to profile performance before deciding to use this method.
    
    Overrides:
    
    currentTokenId in class JsonParser
    
    Returns:
    
    int matching one of constants from JsonTokenId.
  - getCurrentToken
```
public JsonToken getCurrentToken()
```
    Description copied from class: JsonParser
    
    Alias for JsonParser.currentToken(), will be deprecated in Jackson 2.9
    
    Specified by:
    
    getCurrentToken in class JsonParser
  - getCurrentTokenId
```
public int getCurrentTokenId()
```
    Description copied from class: JsonParser
    
    Alias for JsonParser.currentTokenId(), will be deprecated in Jackson 2.9
    
    Specified by:
    
    getCurrentTokenId in class JsonParser
  - hasCurrentToken
```
public boolean hasCurrentToken()
```
    Description copied from class: JsonParser
    
    Method for checking whether parser currently points to a token (and data for that token is available). Equivalent to check for parser.getCurrentToken() != null.
    
    Specified by:
    
    hasCurrentToken in class JsonParser
    
    Returns:
    
    True if the parser just returned a valid token via JsonParser.nextToken(); false otherwise (parser was just constructed, encountered end-of-input and returned null from JsonParser.nextToken(), or the token has been consumed)
  - hasTokenId
```
public boolean hasTokenId(int id)
```
    Description copied from class: JsonParser
    
    Method that is functionally equivalent to: return currentTokenId() == id but may be more efficiently implemented.
    Note that no traversal or conversion is performed; so in some cases calling method like JsonParser.isExpectedStartArrayToken() is necessary instead.
    
    Specified by:
    
    hasTokenId in class JsonParser
  - hasToken
```
public boolean hasToken(JsonToken t)
```
    Description copied from class: JsonParser
    
    Method that is functionally equivalent to: return currentToken() == t but may be more efficiently implemented.
    Note that no traversal or conversion is performed; so in some cases calling method like JsonParser.isExpectedStartArrayToken() is necessary instead.
    
    Specified by:
    
    hasToken in class JsonParser
  - getCurrentName
```
public String getCurrentName()
                      throws IOException
```
    Description copied from class: JsonParser
    
    Method that can be called to get the name associated with the current token: for JsonToken.FIELD_NAMEs it will be the same as what JsonParser.getText() returns; for field values it will be preceding field name; and for others (array values, root-level values) null.
    
    Specified by:
    
    getCurrentName in class JsonParser
    
    Throws:
    
    IOException
  - getCurrentLocation
```
public JsonLocation getCurrentLocation()
```
    Description copied from class: JsonParser
    
    Method that returns location of the last processed character; usually for error reporting purposes.
    
    Specified by:
    
    getCurrentLocation in class JsonParser
  - getParsingContext
```
public JsonStreamContext getParsingContext()
```
    Description copied from class: JsonParser
    
    Method that can be used to access current parsing context reader is in. There are 3 different types: root, array and object contexts, with slightly different available information. Contexts are hierarchically nested, and can be used for example for figuring out part of the input document that correspond to specific array or object (for highlighting purposes, or error reporting). Contexts can also be used for simple xpath-like matching of input, if so desired.
    
    Specified by:
    
    getParsingContext in class JsonParser
  - isExpectedStartArrayToken
```
public boolean isExpectedStartArrayToken()
```
    Description copied from class: JsonParser
    Specialized accessor that can be used to verify that the current token indicates start array (usually meaning that current token is JsonToken.START_ARRAY) when start array is expected. For some specialized parsers this can return true for other cases as well; this is usually done to emulate arrays in cases underlying format is ambiguous (XML, for example, has no format-level difference between Objects and Arrays; it just has elements).
    Default implementation is equivalent to:
```
   currentToken() == JsonToken.START_ARRAY
```
    but may be overridden by custom parser implementations.
    Overrides:
    
    isExpectedStartArrayToken in class JsonParser
    
    Returns:
    
    True if the current token can be considered as a start-array marker (such JsonToken.START_ARRAY); false if not.
  - isExpectedStartObjectToken
```
public boolean isExpectedStartObjectToken()
```
    Description copied from class: JsonParser
    
    Similar to JsonParser.isExpectedStartArrayToken(), but checks whether stream currently points to JsonToken.START_OBJECT.
    
    Overrides:
    
    isExpectedStartObjectToken in class JsonParser
  - isNaN
```
public boolean isNaN()
              throws IOException
```
    Description copied from class: JsonParser
    
    Access for checking whether current token is a numeric value token, but one that is of "not-a-number" (NaN) variety (including both "NaN" AND positive/negative infinity!): not supported by all formats, but often supported for JsonToken.VALUE_NUMBER_FLOAT. NOTE: roughly equivalent to calling !Double.isFinite() on value you would get from calling JsonParser.getDoubleValue().
    
    Overrides:
    
    isNaN in class JsonParser
    
    Throws:
    
    IOException
  - clearCurrentToken
```
public void clearCurrentToken()
```
    Description copied from class: JsonParser
    
    Method called to "consume" the current token by effectively removing it so that JsonParser.hasCurrentToken() returns false, and JsonParser.getCurrentToken() null). Cleared token value can still be accessed by calling JsonParser.getLastClearedToken() (if absolutely needed), but usually isn't.
    Method was added to be used by the optional data binder, since it has to be able to consume last token used for binding (so that it will not be used again).
    
    Specified by:
    
    clearCurrentToken in class JsonParser
  - getLastClearedToken
```
public JsonToken getLastClearedToken()
```
    Description copied from class: JsonParser
    
    Method that can be called to get the last token that was cleared using JsonParser.clearCurrentToken(). This is not necessarily the latest token read. Will return null if no tokens have been cleared, or if parser has been closed.
    
    Specified by:
    
    getLastClearedToken in class JsonParser
  - overrideCurrentName
```
public void overrideCurrentName(String name)
```
    Description copied from class: JsonParser
    
    Method that can be used to change what is considered to be the current (field) name. May be needed to support non-JSON data formats or unusual binding conventions; not needed for typical processing.
    Note that use of this method should only be done as sort of last resort, as it is a work-around for regular operation.
    
    Specified by:
    
    overrideCurrentName in class JsonParser
    
    Parameters:
    
    name - Name to use as the current name; may be null.
  - getText
```
public String getText()
               throws IOException
```
    Description copied from class: JsonParser
    
    Method for accessing textual representation of the current token; if no current token (before first call to JsonParser.nextToken(), or after encountering end-of-input), returns null. Method can be called for any token type.
    
    Specified by:
    
    getText in class JsonParser
    
    Throws:
    
    IOException
  - hasTextCharacters
```
public boolean hasTextCharacters()
```
    Description copied from class: JsonParser
    
    Method that can be used to determine whether calling of JsonParser.getTextCharacters() would be the most efficient way to access textual content for the event parser currently points to.
    Default implementation simply returns false since only actual implementation class has knowledge of its internal buffering state. Implementations are strongly encouraged to properly override this method, to allow efficient copying of content by other code.
    
    Specified by:
    
    hasTextCharacters in class JsonParser
    
    Returns:
    
    True if parser currently has character array that can be efficiently returned via JsonParser.getTextCharacters(); false means that it may or may not exist
  - getTextCharacters
```
public char[] getTextCharacters()
                         throws IOException
```
    Description copied from class: JsonParser
    Method similar to JsonParser.getText(), but that will return underlying (unmodifiable) character array that contains textual value, instead of constructing a String object to contain this information. Note, however, that:
    - Textual contents are not guaranteed to start at index 0 (rather, call JsonParser.getTextOffset()) to know the actual offset
    - Length of textual contents may be less than the length of returned buffer: call JsonParser.getTextLength() for actual length of returned content.
    Note that caller MUST NOT modify the returned character array in any way -- doing so may corrupt current parser state and render parser instance useless.
    The only reason to call this method (over JsonParser.getText()) is to avoid construction of a String object (which will make a copy of contents).
    Specified by:
    
    getTextCharacters in class JsonParser
    
    Throws:
    
    IOException
  - getTextLength
```
public int getTextLength()
                  throws IOException
```
    Description copied from class: JsonParser
    
    Accessor used with JsonParser.getTextCharacters(), to know length of String stored in returned buffer.
    
    Specified by:
    
    getTextLength in class JsonParser
    
    Returns:
    
    Number of characters within buffer returned by JsonParser.getTextCharacters() that are part of textual content of the current token.
    
    Throws:
    
    IOException
  - getTextOffset
```
public int getTextOffset()
                  throws IOException
```
    Description copied from class: JsonParser
    
    Accessor used with JsonParser.getTextCharacters(), to know offset of the first text content character within buffer.
    
    Specified by:
    
    getTextOffset in class JsonParser
    
    Returns:
    
    Offset of the first character within buffer returned by JsonParser.getTextCharacters() that is part of textual content of the current token.
    
    Throws:
    
    IOException
  - getText
```
public int getText(Writer writer)
            throws IOException,
                   UnsupportedOperationException
```
    Description copied from class: JsonParser
    Method to read the textual representation of the current token in chunks and pass it to the given Writer. Conceptually same as calling:
```
  writer.write(parser.getText());
```
    but should typically be more efficient as longer content does need to be combined into a single String to return, and write can occur directly from intermediate buffers Jackson uses.
    Overrides:
    
    getText in class JsonParser
    
    Returns:
    
    The number of characters written to the Writer
    
    Throws:
    
    IOException
    
    UnsupportedOperationException
  - getBigIntegerValue
```
public BigInteger getBigIntegerValue()
                              throws IOException
```
    Description copied from class: JsonParser
    
    Numeric accessor that can be called when the current token is of type JsonToken.VALUE_NUMBER_INT and it can not be used as a Java long primitive type due to its magnitude. It can also be called for JsonToken.VALUE_NUMBER_FLOAT; if so, it is equivalent to calling JsonParser.getDecimalValue() and then constructing a BigInteger from that value.
    
    Specified by:
    
    getBigIntegerValue in class JsonParser
    
    Throws:
    
    IOException
  - getBooleanValue
```
public boolean getBooleanValue()
                        throws IOException
```
    Description copied from class: JsonParser
    
    Convenience accessor that can be called when the current token is JsonToken.VALUE_TRUE or JsonToken.VALUE_FALSE.
    Note: if the token is not of above-mentioned boolean types, an integer, but its value falls outside of range of Java long, a JsonParseException may be thrown to indicate numeric overflow/underflow.
    
    Overrides:
    
    getBooleanValue in class JsonParser
    
    Throws:
    
    IOException
  - getByteValue
```
public byte getByteValue()
                  throws IOException
```
    Description copied from class: JsonParser
    
    Numeric accessor that can be called when the current token is of type JsonToken.VALUE_NUMBER_INT and it can be expressed as a value of Java byte primitive type. It can also be called for JsonToken.VALUE_NUMBER_FLOAT; if so, it is equivalent to calling JsonParser.getDoubleValue() and then casting; except for possible overflow/underflow exception.
    Note: if the resulting integer value falls outside range of Java byte, a JsonParseException will be thrown to indicate numeric overflow/underflow.
    
    Overrides:
    
    getByteValue in class JsonParser
    
    Throws:
    
    IOException
  - getShortValue
```
public short getShortValue()
                    throws IOException
```
    Description copied from class: JsonParser
    
    Numeric accessor that can be called when the current token is of type JsonToken.VALUE_NUMBER_INT and it can be expressed as a value of Java short primitive type. It can also be called for JsonToken.VALUE_NUMBER_FLOAT; if so, it is equivalent to calling JsonParser.getDoubleValue() and then casting; except for possible overflow/underflow exception.
    Note: if the resulting integer value falls outside range of Java short, a JsonParseException will be thrown to indicate numeric overflow/underflow.
    
    Overrides:
    
    getShortValue in class JsonParser
    
    Throws:
    
    IOException
  - getDecimalValue
```
public BigDecimal getDecimalValue()
                           throws IOException
```
    Description copied from class: JsonParser
    
    Numeric accessor that can be called when the current token is of type JsonToken.VALUE_NUMBER_FLOAT or JsonToken.VALUE_NUMBER_INT. No under/overflow exceptions are ever thrown.
    
    Specified by:
    
    getDecimalValue in class JsonParser
    
    Throws:
    
    IOException
  - getDoubleValue
```
public double getDoubleValue()
                      throws IOException
```
    Description copied from class: JsonParser
    
    Numeric accessor that can be called when the current token is of type JsonToken.VALUE_NUMBER_FLOAT and it can be expressed as a Java double primitive type. It can also be called for JsonToken.VALUE_NUMBER_INT; if so, it is equivalent to calling JsonParser.getLongValue() and then casting; except for possible overflow/underflow exception.
    Note: if the value falls outside of range of Java double, a JsonParseException will be thrown to indicate numeric overflow/underflow.
    
    Specified by:
    
    getDoubleValue in class JsonParser
    
    Throws:
    
    IOException
  - getFloatValue
```
public float getFloatValue()
                    throws IOException
```
    Description copied from class: JsonParser
    
    Numeric accessor that can be called when the current token is of type JsonToken.VALUE_NUMBER_FLOAT and it can be expressed as a Java float primitive type. It can also be called for JsonToken.VALUE_NUMBER_INT; if so, it is equivalent to calling JsonParser.getLongValue() and then casting; except for possible overflow/underflow exception.
    Note: if the value falls outside of range of Java float, a JsonParseException will be thrown to indicate numeric overflow/underflow.
    
    Specified by:
    
    getFloatValue in class JsonParser
    
    Throws:
    
    IOException
  - getIntValue
```
public int getIntValue()
                throws IOException
```
    Description copied from class: JsonParser
    
    Numeric accessor that can be called when the current token is of type JsonToken.VALUE_NUMBER_INT and it can be expressed as a value of Java int primitive type. It can also be called for JsonToken.VALUE_NUMBER_FLOAT; if so, it is equivalent to calling JsonParser.getDoubleValue() and then casting; except for possible overflow/underflow exception.
    Note: if the resulting integer value falls outside range of Java int, a JsonParseException may be thrown to indicate numeric overflow/underflow.
    
    Specified by:
    
    getIntValue in class JsonParser
    
    Throws:
    
    IOException
  - getLongValue
```
public long getLongValue()
                  throws IOException
```
    Description copied from class: JsonParser
    
    Numeric accessor that can be called when the current token is of type JsonToken.VALUE_NUMBER_INT and it can be expressed as a Java long primitive type. It can also be called for JsonToken.VALUE_NUMBER_FLOAT; if so, it is equivalent to calling JsonParser.getDoubleValue() and then casting to int; except for possible overflow/underflow exception.
    Note: if the token is an integer, but its value falls outside of range of Java long, a JsonParseException may be thrown to indicate numeric overflow/underflow.
    
    Specified by:
    
    getLongValue in class JsonParser
    
    Throws:
    
    IOException
  - getNumberType
```
public JsonParser.NumberType getNumberType()
                                    throws IOException
```
    Description copied from class: JsonParser
    
    If current token is of type JsonToken.VALUE_NUMBER_INT or JsonToken.VALUE_NUMBER_FLOAT, returns one of JsonParser.NumberType constants; otherwise returns null.
    
    Specified by:
    
    getNumberType in class JsonParser
    
    Throws:
    
    IOException
  - getNumberValue
```
public Number getNumberValue()
                      throws IOException
```
    Description copied from class: JsonParser
    
    Generic number value accessor method that will work for all kinds of numeric values. It will return the optimal (simplest/smallest possible) wrapper object that can express the numeric value just parsed.
    
    Specified by:
    
    getNumberValue in class JsonParser
    
    Throws:
    
    IOException
  - getValueAsInt
```
public int getValueAsInt()
                  throws IOException
```
    Description copied from class: JsonParser
    
    Method that will try to convert value of current token to a int. Numbers are coerced using default Java rules; booleans convert to 0 (false) and 1 (true), and Strings are parsed using default Java language integer parsing rules.
    If representation can not be converted to an int (including structured type markers like start/end Object/Array) default value of 0 will be returned; no exceptions are thrown.
    
    Overrides:
    
    getValueAsInt in class JsonParser
    
    Throws:
    
    IOException
  - getValueAsInt
```
public int getValueAsInt(int defaultValue)
                  throws IOException
```
    Description copied from class: JsonParser
    
    Method that will try to convert value of current token to a int. Numbers are coerced using default Java rules; booleans convert to 0 (false) and 1 (true), and Strings are parsed using default Java language integer parsing rules.
    If representation can not be converted to an int (including structured type markers like start/end Object/Array) specified def will be returned; no exceptions are thrown.
    
    Overrides:
    
    getValueAsInt in class JsonParser
    
    Throws:
    
    IOException
  - getValueAsLong
```
public long getValueAsLong()
                    throws IOException
```
    Description copied from class: JsonParser
    
    Method that will try to convert value of current token to a long. Numbers are coerced using default Java rules; booleans convert to 0 (false) and 1 (true), and Strings are parsed using default Java language integer parsing rules.
    If representation can not be converted to a long (including structured type markers like start/end Object/Array) default value of 0L will be returned; no exceptions are thrown.
    
    Overrides:
    
    getValueAsLong in class JsonParser
    
    Throws:
    
    IOException
  - getValueAsLong
```
public long getValueAsLong(long defaultValue)
                    throws IOException
```
    Description copied from class: JsonParser
    
    Method that will try to convert value of current token to a long. Numbers are coerced using default Java rules; booleans convert to 0 (false) and 1 (true), and Strings are parsed using default Java language integer parsing rules.
    If representation can not be converted to a long (including structured type markers like start/end Object/Array) specified def will be returned; no exceptions are thrown.
    
    Overrides:
    
    getValueAsLong in class JsonParser
    
    Throws:
    
    IOException
  - getValueAsDouble
```
public double getValueAsDouble()
                        throws IOException
```
    Description copied from class: JsonParser
    
    Method that will try to convert value of current token to a Java double. Numbers are coerced using default Java rules; booleans convert to 0.0 (false) and 1.0 (true), and Strings are parsed using default Java language floating point parsing rules.
    If representation can not be converted to a double (including structured types like Objects and Arrays), default value of 0.0 will be returned; no exceptions are thrown.
    
    Overrides:
    
    getValueAsDouble in class JsonParser
    
    Throws:
    
    IOException
  - getValueAsDouble
```
public double getValueAsDouble(double defaultValue)
                        throws IOException
```
    Description copied from class: JsonParser
    
    Method that will try to convert value of current token to a Java double. Numbers are coerced using default Java rules; booleans convert to 0.0 (false) and 1.0 (true), and Strings are parsed using default Java language floating point parsing rules.
    If representation can not be converted to a double (including structured types like Objects and Arrays), specified def will be returned; no exceptions are thrown.
    
    Overrides:
    
    getValueAsDouble in class JsonParser
    
    Throws:
    
    IOException
  - getValueAsBoolean
```
public boolean getValueAsBoolean()
                          throws IOException
```
    Description copied from class: JsonParser
    
    Method that will try to convert value of current token to a boolean. JSON booleans map naturally; integer numbers other than 0 map to true, and 0 maps to false and Strings 'true' and 'false' map to corresponding values.
    If representation can not be converted to a boolean value (including structured types like Objects and Arrays), default value of false will be returned; no exceptions are thrown.
    
    Overrides:
    
    getValueAsBoolean in class JsonParser
    
    Throws:
    
    IOException
  - getValueAsBoolean
```
public boolean getValueAsBoolean(boolean defaultValue)
                          throws IOException
```
    Description copied from class: JsonParser
    
    Method that will try to convert value of current token to a boolean. JSON booleans map naturally; integer numbers other than 0 map to true, and 0 maps to false and Strings 'true' and 'false' map to corresponding values.
    If representation can not be converted to a boolean value (including structured types like Objects and Arrays), specified def will be returned; no exceptions are thrown.
    
    Overrides:
    
    getValueAsBoolean in class JsonParser
    
    Throws:
    
    IOException
  - getValueAsString
```
public String getValueAsString()
                        throws IOException
```
    Description copied from class: JsonParser
    
    Method that will try to convert value of current token to a String. JSON Strings map naturally; scalar values get converted to their textual representation. If representation can not be converted to a String value (including structured types like Objects and Arrays and null token), default value of null will be returned; no exceptions are thrown.
    
    Overrides:
    
    getValueAsString in class JsonParser
    
    Throws:
    
    IOException
  - getValueAsString
```
public String getValueAsString(String defaultValue)
                        throws IOException
```
    Description copied from class: JsonParser
    
    Method that will try to convert value of current token to a String. JSON Strings map naturally; scalar values get converted to their textual representation. If representation can not be converted to a String value (including structured types like Objects and Arrays and null token), specified default value will be returned; no exceptions are thrown.
    
    Specified by:
    
    getValueAsString in class JsonParser
    
    Throws:
    
    IOException
  - getEmbeddedObject
```
public Object getEmbeddedObject()
                         throws IOException
```
    Description copied from class: JsonParser
    
    Accessor that can be called if (and only if) the current token is JsonToken.VALUE_EMBEDDED_OBJECT. For other token types, null is returned.
    Note: only some specialized parser implementations support embedding of objects (usually ones that are facades on top of non-streaming sources, such as object trees). One exception is access to binary content (whether via base64 encoding or not) which typically is accessible using this method, as well as JsonParser.getBinaryValue().
    
    Overrides:
    
    getEmbeddedObject in class JsonParser
    
    Throws:
    
    IOException
  - getBinaryValue
```
public byte[] getBinaryValue(Base64Variant b64variant)
                      throws IOException
```
    Description copied from class: JsonParser
    
    Method that can be used to read (and consume -- results may not be accessible using other methods after the call) base64-encoded binary data included in the current textual JSON value. It works similar to getting String value via JsonParser.getText() and decoding result (except for decoding part), but should be significantly more performant.
    Note that non-decoded textual contents of the current token are not guaranteed to be accessible after this method is called. Current implementation, for example, clears up textual content during decoding. Decoded binary content, however, will be retained until parser is advanced to the next event.
    
    Specified by:
    
    getBinaryValue in class JsonParser
    
    Parameters:
    
    b64variant - Expected variant of base64 encoded content (see Base64Variants for definitions of "standard" variants).
    
    Returns:
    
    Decoded binary data
    
    Throws:
    
    IOException
  - readBinaryValue
```
public int readBinaryValue(Base64Variant b64variant,
                           OutputStream out)
                    throws IOException
```
    Description copied from class: JsonParser
    
    Similar to JsonParser.readBinaryValue(OutputStream) but allows explicitly specifying base64 variant to use.
    
    Overrides:
    
    readBinaryValue in class JsonParser
    
    Parameters:
    
    b64variant - base64 variant to use
    
    out - Output stream to use for passing decoded binary data
    
    Returns:
    
    Number of bytes that were decoded and written via OutputStream
    
    Throws:
    
    IOException
  - getTokenLocation
```
public JsonLocation getTokenLocation()
```
    Description copied from class: JsonParser
    
    Method that return the starting location of the current token; that is, position of the first character from input that starts the current token.
    
    Specified by:
    
    getTokenLocation in class JsonParser
  - nextToken
```
public JsonToken nextToken()
                    throws IOException
```
    Description copied from class: JsonParser
    
    Main iteration method, which will advance stream enough to determine type of the next token, if any. If none remaining (stream has no content other than possible white space before ending), null will be returned.
    
    Specified by:
    
    nextToken in class JsonParser
    
    Returns:
    
    Next token from the stream, if any found, or null to indicate end-of-input
    
    Throws:
    
    IOException
  - nextValue
```
public JsonToken nextValue()
                    throws IOException
```
    Description copied from class: JsonParser
    
    Iteration method that will advance stream enough to determine type of the next token that is a value type (including JSON Array and Object start/end markers). Or put another way, nextToken() will be called once, and if JsonToken.FIELD_NAME is returned, another time to get the value for the field. Method is most useful for iterating over value entries of JSON objects; field name will still be available by calling JsonParser.getCurrentName() when parser points to the value.
    
    Specified by:
    
    nextValue in class JsonParser
    
    Returns:
    
    Next non-field-name token from the stream, if any found, or null to indicate end-of-input (or, for non-blocking parsers, JsonToken.NOT_AVAILABLE if no tokens were available yet)
    
    Throws:
    
    IOException
  - finishToken
```
public void finishToken()
                 throws IOException
```
    Description copied from class: JsonParser
    
    Method that may be used to force full handling of the current token so that even if lazy processing is enabled, the whole contents are read for possible retrieval. This is usually used to ensure that the token end location is available, as well as token contents (similar to what calling, say JsonParser.getTextCharacters(), would achieve).
    Note that for many dataformat implementations this method will not do anything; this is the default implementation unless overridden by sub-classes.
    
    Overrides:
    
    finishToken in class JsonParser
    
    Throws:
    
    IOException
  - skipChildren
```
public JsonParser skipChildren()
                        throws IOException
```
    Description copied from class: JsonParser
    
    Method that will skip all child tokens of an array or object token that the parser currently points to, iff stream points to JsonToken.START_OBJECT or JsonToken.START_ARRAY. If not, it will do nothing. After skipping, stream will point to matching JsonToken.END_OBJECT or JsonToken.END_ARRAY (possibly skipping nested pairs of START/END OBJECT/ARRAY tokens as well as value tokens). The idea is that after calling this method, application will call JsonParser.nextToken() to point to the next available token, if any.
    
    Specified by:
    
    skipChildren in class JsonParser
    
    Throws:
    
    IOException
  - canReadObjectId
```
public boolean canReadObjectId()
```
    Description copied from class: JsonParser
    
    Introspection method that may be called to see if the underlying data format supports some kind of Object Ids natively (many do not; for example, JSON doesn't).
    Default implementation returns true; overridden by data formats that do support native Object Ids. Caller is expected to either use a non-native notation (explicit property or such), or fail, in case it can not use native object ids.
    
    Overrides:
    
    canReadObjectId in class JsonParser
  - canReadTypeId
```
public boolean canReadTypeId()
```
    Description copied from class: JsonParser
    
    Introspection method that may be called to see if the underlying data format supports some kind of Type Ids natively (many do not; for example, JSON doesn't).
    Default implementation returns true; overridden by data formats that do support native Type Ids. Caller is expected to either use a non-native notation (explicit property or such), or fail, in case it can not use native type ids.
    
    Overrides:
    
    canReadTypeId in class JsonParser
  - getObjectId
```
public Object getObjectId()
                   throws IOException
```
    Description copied from class: JsonParser
    
    Method that can be called to check whether current token (one that was just read) has an associated Object id, and if so, return it. Note that while typically caller should check with JsonParser.canReadObjectId() first, it is not illegal to call this method even if that method returns true; but if so, it will return null. This may be used to simplify calling code.
    Default implementation will simply return null.
    
    Overrides:
    
    getObjectId in class JsonParser
    
    Throws:
    
    IOException
  - getTypeId
```
public Object getTypeId()
                 throws IOException
```
    Description copied from class: JsonParser
    
    Method that can be called to check whether current token (one that was just read) has an associated type id, and if so, return it. Note that while typically caller should check with JsonParser.canReadTypeId() first, it is not illegal to call this method even if that method returns true; but if so, it will return null. This may be used to simplify calling code.
    Default implementation will simply return null.
    
    Overrides:
    
    getTypeId in class JsonParser
    
    Throws:
    
    IOException

Class JsonParserDelegate

Nested Class Summary

Nested classes/interfaces inherited from class com.fasterxml.jackson.core.JsonParser

Field Summary

Fields inherited from class com.fasterxml.jackson.core.JsonParser

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

Field Detail

delegate

Constructor Detail

JsonParserDelegate

Method Detail

getCurrentValue

setCurrentValue

setCodec

getCodec

enable

disable

isEnabled

getFeatureMask

setFeatureMask

overrideStdFeatures

overrideFormatFeatures

getSchema

setSchema

canUseSchema

version

getInputSource

requiresCustomCodec

close

isClosed

currentToken

currentTokenId

getCurrentToken

getCurrentTokenId

hasCurrentToken

hasTokenId

hasToken

getCurrentName

getCurrentLocation

getParsingContext

isExpectedStartArrayToken

isExpectedStartObjectToken

isNaN

clearCurrentToken

getLastClearedToken

overrideCurrentName

getText

hasTextCharacters

getTextCharacters

getTextLength

getTextOffset

getText

getBigIntegerValue

getBooleanValue

getByteValue

getShortValue

getDecimalValue

getDoubleValue

getFloatValue

getIntValue

getLongValue

getNumberType

getNumberValue

getValueAsInt

getValueAsInt

getValueAsLong

getValueAsLong

getValueAsDouble

getValueAsDouble

getValueAsBoolean

getValueAsBoolean

getValueAsString

getValueAsString

getEmbeddedObject

getBinaryValue

readBinaryValue

getTokenLocation