Package org.codehaus.jackson.map

Class MappingIterator<T>

java.lang.Object

org.codehaus.jackson.map.MappingIterator<T>

All Implemented Interfaces:

Iterator<T>

public class MappingIterator<T>
extends Object
implements Iterator<T>

Iterator exposed by ObjectMapper when binding sequence of objects. Extension is done to allow more convenient exposing of IOException (which basic Iterator does not expose)

Since:

1.8

Field Summary

Fields

Modifier and Type	Field	Description
protected final boolean	_closeParser	Flag that indicates whether input JsonParser should be closed when we are done or not; generally only called when caller did not pass JsonParser.
protected final DeserializationContext	_context
protected final JsonDeserializer<T>	_deserializer
protected boolean	_hasNextChecked	Flag that is set when we have determined what hasNextValue() should value; reset when nextValue() is called
protected JsonParser	_parser
protected final JavaType	_type
protected final T	_updatedValue	If not null, "value to update" instead of creating a new instance for each call.
protected static final MappingIterator<?>	EMPTY_ITERATOR

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	MappingIterator(JavaType type, JsonParser jp, DeserializationContext ctxt, JsonDeserializer<?> deser)
protected	MappingIterator(JavaType type, JsonParser jp, DeserializationContext ctxt, JsonDeserializer<?> deser, boolean closeParser, Object valueToUpdate)

Method Summary

Modifier and Type	Method	Description
protected static <T> MappingIterator<T>	emptyIterator()
boolean	hasNext()
boolean	hasNextValue()	Equivalent of next() but one that may throw checked exceptions from Jackson due to invalid input.
T	next()
T	nextValue()
void	remove()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Field Details

EMPTY_ITERATOR

protected static final MappingIterator<?> EMPTY_ITERATOR

_type

protected final JavaType _type

_context

protected final DeserializationContext _context

_deserializer

protected final JsonDeserializer<T> _deserializer

_parser

protected JsonParser _parser

_closeParser

protected final boolean _closeParser

Flag that indicates whether input JsonParser should be closed when we are done or not; generally only called when caller did not pass JsonParser.

_hasNextChecked

protected boolean _hasNextChecked

Flag that is set when we have determined what hasNextValue() should value; reset when nextValue() is called

_updatedValue

protected final T _updatedValue

If not null, "value to update" instead of creating a new instance for each call.

Constructor Details

MappingIterator

protected MappingIterator(JavaType type,
 JsonParser jp,
 DeserializationContext ctxt,
 JsonDeserializer<?> deser)

MappingIterator

protected MappingIterator(JavaType type,
 JsonParser jp,
 DeserializationContext ctxt,
 JsonDeserializer<?> deser,
 boolean closeParser,
 Object valueToUpdate)

Since:

1.9.3

Method Details

emptyIterator

protected static <T> MappingIterator<T> emptyIterator()

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<T>

next

public T next()

Specified by:

next in interface Iterator<T>

remove

public void remove()

Specified by:

remove in interface Iterator<T>

hasNextValue

public boolean hasNextValue()
                     throws IOException

Equivalent of next() but one that may throw checked exceptions from Jackson due to invalid input.

Throws:

IOException

nextValue

public T nextValue()
            throws IOException

Throws:

IOException