com.fasterxml.jackson.databind

Class JsonMappingException.Reference

java.lang.Object

com.fasterxml.jackson.databind.JsonMappingException.Reference

All Implemented Interfaces:

Serializable

Enclosing class:

JsonMappingException

public static class JsonMappingException.Reference
extends Object
implements Serializable

Simple bean class used to contain references. References can be added to indicate execution/reference path that lead to the problem that caused this exception to be thrown.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected String	_desc Lazily-constructed description of this instance; needed mostly to allow JDK serialization to work in case where _from is non-serializable (and has to be dropped) but we still want to pass actual description along.
protected String	_fieldName Name of field (for beans) or key (for Maps) that is part of the reference.
protected Object	_from
protected int	_index Index within a Collection instance that contained the reference; used if index is relevant and available.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Reference() Default constructor for deserialization/sub-classing purposes
	Reference(Object from)
	Reference(Object from, int index)
	Reference(Object from, String fieldName)

Method Summary

Modifier and Type	Method and Description
String	getDescription()
String	getFieldName()
Object	getFrom() Object through which reference was resolved.
int	getIndex()
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

_from

protected transient Object _from

_fieldName

protected String _fieldName

Name of field (for beans) or key (for Maps) that is part of the reference. May be null for Collection types (which generally have _index defined), or when resolving Map classes without (yet) having an instance to operate on.

_index

protected int _index

Index within a Collection instance that contained the reference; used if index is relevant and available. If either not applicable, or not available, -1 is used to denote "not known" (or not relevant).

_desc

protected String _desc

Lazily-constructed description of this instance; needed mostly to allow JDK serialization to work in case where _from is non-serializable (and has to be dropped) but we still want to pass actual description along.

Since:

2.8

Constructor Detail

Reference

protected Reference()

Default constructor for deserialization/sub-classing purposes

Reference

public Reference(Object from)

Reference

public Reference(Object from,
                 String fieldName)

Reference

public Reference(Object from,
                 int index)

Method Detail

getFrom

public Object getFrom()

Object through which reference was resolved. Can be either actual instance (usually the case for serialization), or Class (usually the case for deserialization).

Note that this value must be `transient` to allow serializability (as often such Object is NOT serializable; or, in case of `Class`, may not available at the point of deserialization). As such will return `null` if instance has been passed using JDK serialization.

getFieldName

public String getFieldName()

getIndex

public int getIndex()

getDescription

public String getDescription()

toString

public String toString()

Overrides:

toString in class Object