com.fasterxml.jackson.databind.util

Class TokenBufferReadContext

java.lang.Object

com.fasterxml.jackson.core.JsonStreamContext

com.fasterxml.jackson.databind.util.TokenBufferReadContext

public class TokenBufferReadContext
extends JsonStreamContext

Implementation of JsonStreamContext used by TokenBuffer to link back to the original context to try to keep location information consistent between source location and buffered content when it's re-read from the buffer.

Since:

2.9

Field Summary

Fields

Modifier and Type	Field and Description
protected String	_currentName
protected Object	_currentValue
protected JsonStreamContext	_parent
protected JsonLocation	_startLocation

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

_index, _type, TYPE_ARRAY, TYPE_OBJECT, TYPE_ROOT

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	TokenBufferReadContext() Constructor for case where there is no real surrounding context: just create virtual ROOT
protected	TokenBufferReadContext(JsonStreamContext base, JsonLocation startLoc)
protected	TokenBufferReadContext(JsonStreamContext base, Object srcRef)
protected	TokenBufferReadContext(TokenBufferReadContext parent, int type, int index)

Method Summary

Modifier and Type	Method and Description
TokenBufferReadContext	createChildArrayContext()
TokenBufferReadContext	createChildObjectContext()
static TokenBufferReadContext	createRootContext(JsonStreamContext origContext)
String	getCurrentName() Method for accessing name associated with the current location.
Object	getCurrentValue() Method for accessing currently active value being used by data-binding (as the source of streaming data to write, or destination of data being read), at this level in hierarchy.
JsonStreamContext	getParent() Accessor for finding parent context of this context; will return null for root context.
boolean	hasCurrentName()
TokenBufferReadContext	parentOrCopy() Helper method we need to handle discontinuity between "real" contexts buffer creates, and ones from parent: problem being they are of different types.
void	setCurrentName(String name)
void	setCurrentValue(Object v) Method to call to pass value to be returned via JsonStreamContext.getCurrentValue(); typically called indirectly through JsonParser.setCurrentValue(java.lang.Object) or JsonGenerator.setCurrentValue(java.lang.Object)).

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

getCurrentIndex, getEntryCount, getStartLocation, getTypeDesc, hasCurrentIndex, hasPathSegment, inArray, inObject, inRoot, pathAsPointer, pathAsPointer, toString, typeDesc

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

_parent

protected final JsonStreamContext _parent

_startLocation

protected final JsonLocation _startLocation

_currentName

protected String _currentName

_currentValue

protected Object _currentValue

Constructor Detail

TokenBufferReadContext

protected TokenBufferReadContext(JsonStreamContext base,
                                 Object srcRef)

TokenBufferReadContext

protected TokenBufferReadContext(JsonStreamContext base,
                                 JsonLocation startLoc)

TokenBufferReadContext

protected TokenBufferReadContext()

Constructor for case where there is no real surrounding context: just create virtual ROOT

TokenBufferReadContext

protected TokenBufferReadContext(TokenBufferReadContext parent,
                                 int type,
                                 int index)

Method Detail

getCurrentValue

public Object getCurrentValue()

Description copied from class: JsonStreamContext

Method for accessing currently active value being used by data-binding (as the source of streaming data to write, or destination of data being read), at this level in hierarchy.

Note that "current value" is NOT populated (or used) by Streaming parser or generator; 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 JsonStreamContext

Returns:

Currently active value, if one has been assigned.

setCurrentValue

public void setCurrentValue(Object v)

Description copied from class: JsonStreamContext

Method to call to pass value to be returned via JsonStreamContext.getCurrentValue(); typically called indirectly through JsonParser.setCurrentValue(java.lang.Object) or JsonGenerator.setCurrentValue(java.lang.Object)).

Overrides:

setCurrentValue in class JsonStreamContext

createRootContext

public static TokenBufferReadContext createRootContext(JsonStreamContext origContext)

createChildArrayContext

public TokenBufferReadContext createChildArrayContext()

createChildObjectContext

public TokenBufferReadContext createChildObjectContext()

parentOrCopy

public TokenBufferReadContext parentOrCopy()

Helper method we need to handle discontinuity between "real" contexts buffer creates, and ones from parent: problem being they are of different types.

getCurrentName

public String getCurrentName()

Description copied from class: JsonStreamContext

Method for accessing name associated with the current location. Non-null for FIELD_NAME and value events that directly follow field names; null for root level and array values.

Specified by:

getCurrentName in class JsonStreamContext

hasCurrentName

public boolean hasCurrentName()

Overrides:

hasCurrentName in class JsonStreamContext

getParent

public JsonStreamContext getParent()

Description copied from class: JsonStreamContext

Accessor for finding parent context of this context; will return null for root context.

Specified by:

getParent in class JsonStreamContext

setCurrentName

public void setCurrentName(String name)
                    throws JsonProcessingException

Throws:

JsonProcessingException