com.fasterxml.jackson.core.json

Class DupDetector

java.lang.Object

com.fasterxml.jackson.core.json.DupDetector

public class DupDetector
extends Object

Helper class used if JsonParser.Feature.STRICT_DUPLICATE_DETECTION is enabled. Optimized to try to limit memory usage and processing overhead for smallest entries, but without adding trashing (immutable objects would achieve optimal memory usage but lead to significant number of discarded temp objects for scopes with large number of entries). Another consideration is trying to limit actual number of compiled classes as it contributes significantly to overall jar size (due to linkage etc).

Since:

2.3

Field Summary

Fields

Modifier and Type	Field and Description
protected String	_firstName
protected String	_secondName
protected HashSet<String>	_seen Lazily constructed set of names already seen within this context.
protected Object	_source We need to store a back-reference here to parser/generator.

Method Summary

Modifier and Type	Method and Description
DupDetector	child()
JsonLocation	findLocation()
Object	getSource()
boolean	isDup(String name)
void	reset()
static DupDetector	rootDetector(JsonGenerator g)
static DupDetector	rootDetector(JsonParser p)

Methods inherited from class java.lang.Object

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

Field Detail

_source

protected final Object _source

We need to store a back-reference here to parser/generator.

_firstName

protected String _firstName

_secondName

protected String _secondName

_seen

protected HashSet<String> _seen

Lazily constructed set of names already seen within this context.

Method Detail

rootDetector

public static DupDetector rootDetector(JsonParser p)

rootDetector

public static DupDetector rootDetector(JsonGenerator g)

child

public DupDetector child()

reset

public void reset()

findLocation

public JsonLocation findLocation()

getSource

public Object getSource()

Since:

2.7

isDup

public boolean isDup(String name)
              throws JsonParseException

Throws:

JsonParseException