org.apache.cayenne.reflect

## Class IdMapKeyAccessor

- java.lang.Object
- - org.apache.cayenne.reflect.IdMapKeyAccessor

- All Implemented Interfaces:
    Serializable, Accessor

      public class IdMapKeyAccessor
      extends Object
      implements Accessor

  A stateless read-only accessor of the map key value that is based on the Persistent object id. For single-column ID's the accessor returns a single value (e.g. an Integer). For multi-column ID's it returns the ObjectId.
  Since:
    3.0
  See Also:
    Serialized Form

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static Accessor` | `SHARED_ACCESSOR`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `IdMapKeyAccessor()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `String` | `getName()` Returns property name.
    `Object` | `getValue(Object object)` Returns a property value of an object without disturbing the object fault status.
    `void` | `setValue(Object object, Object newValue)` Sets a property value of an object without disturbing the object fault status.

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

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

- - ### Field Detail

    - #### SHARED_ACCESSOR

          public static final Accessor SHARED_ACCESSOR

  - ### Constructor Detail

    - #### IdMapKeyAccessor

          public IdMapKeyAccessor()

  - ### Method Detail

    - #### getName

          public String getName()

      Description copied from interface: `Accessor`
      Returns property name.
      Specified by:
        `getName` in interface `Accessor`

    - #### getValue

          public Object getValue(Object object)
                          throws PropertyException

      Description copied from interface: `Accessor`
      Returns a property value of an object without disturbing the object fault status.
      Specified by:
        `getValue` in interface `Accessor`
      Throws:
        `PropertyException`

    - #### setValue

          public void setValue(Object object,
                      Object newValue)
                        throws PropertyException

      Description copied from interface: `Accessor`
      Sets a property value of an object without disturbing the object fault status. Old value of the property is specified as a hint.
      Specified by:
        `setValue` in interface `Accessor`
      Throws:
        `PropertyException`

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