JsonMappingException.Reference (Jackson JSON Processor)
Date: 2013-07-14

org.codehaus.jackson.map

## Class JsonMappingException.Reference

- java.lang.Object
- - org.codehaus.jackson.map.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` | `_fieldName` Name of field (for beans) or key (for Maps) that is part of the reference.
    `protected Object` | `_from` Object through which reference was resolved.
    `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` | `JsonMappingException.Reference()` Default constructor for deserialization/sub-classing purposes
    `` | `JsonMappingException.Reference(Object from)`
    `` | `JsonMappingException.Reference(Object from, int index)`
    `` | `JsonMappingException.Reference(Object from, String fieldName)`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `String` | `getFieldName()`
    `Object` | `getFrom()`
    `int` | `getIndex()`
    `void` | `setFieldName(String n)`
    `void` | `setFrom(Object o)`
    `void` | `setIndex(int ix)`
    `String` | `toString()`

    - ### Methods inherited from class java.lang.Object

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

- - ### Field Detail

    - #### _from

          protected Object _from

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

    - #### _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".

  - ### Constructor Detail

    - #### JsonMappingException.Reference

          protected JsonMappingException.Reference()

      Default constructor for deserialization/sub-classing purposes

    - #### JsonMappingException.Reference

          public JsonMappingException.Reference(Object from)

    - #### JsonMappingException.Reference

          public JsonMappingException.Reference(Object from,
                                        String fieldName)

    - #### JsonMappingException.Reference

          public JsonMappingException.Reference(Object from,
                                        int index)

  - ### Method Detail

    - #### setFrom

          public void setFrom(Object o)

    - #### setFieldName

          public void setFieldName(String n)

    - #### setIndex

          public void setIndex(int ix)

    - #### getFrom

          public Object getFrom()

    - #### getFieldName

          public String getFieldName()

    - #### getIndex

          public int getIndex()

    - #### toString

          public String toString()

      Overrides:
        `toString` in class `Object`