org.apache.cayenne.reflect

## Class FieldAccessor

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

- All Implemented Interfaces:
    Serializable, Accessor

      public class FieldAccessor
      extends Object
      implements Accessor

  A PropertyAccessor that performs direct Field access.
  Since:
    1.2
  See Also:
    Serialized Form

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `protected Field` | `field`
    `protected Object` | `nullValue`
    `protected String` | `propertyName`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `FieldAccessor(Class<?> objectClass, String propertyName, Class<?> propertyType)`

  - ### Method Summary

    All Methods Instance Methods Concrete 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.
    `protected Field` | `lookupFieldInHierarchy(Class<?> beanClass, String fieldName)` Recursively looks for a named field in a class hierarchy.
    `protected Field` | `prepareField(Class<?> beanClass, String propertyName, Class<?> propertyType)` Finds a field for the property, ensuring that direct access via reflection is possible.
    `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

    - #### propertyName

          protected String propertyName

    - #### field

          protected Field field

    - #### nullValue

          protected Object nullValue

  - ### Constructor Detail

    - #### FieldAccessor

          public FieldAccessor(Class<?> objectClass,
                               String propertyName,
                               Class<?> propertyType)

  - ### 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`
      Since:
        3.0

    - #### prepareField

          protected Field prepareField(Class<?> beanClass,
                                       String propertyName,
                                       Class<?> propertyType)

      Finds a field for the property, ensuring that direct access via reflection is possible.

    - #### lookupFieldInHierarchy

          protected Field lookupFieldInHierarchy(Class<?> beanClass,
                                                 String fieldName)
                                          throws SecurityException,
                                                 NoSuchFieldException

      Recursively looks for a named field in a class hierarchy.
      Throws:
        `SecurityException`
        `NoSuchFieldException`

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