org.apache.cayenne.property
Class FieldAccessor

java.lang.Object
  org.apache.cayenne.property.FieldAccessor

All Implemented Interfaces:

java.io.Serializable, PropertyAccessor

public class FieldAccessor
extends java.lang.Object
implements PropertyAccessor

A PropertyAccessor that performs direct Field access.

Since:

1.2

Author:

Andrus Adamchik

See Also:

Serialized Form

Field Summary

protected java.lang.reflect.Field	field
protected java.lang.Object	nullValue
protected java.lang.String	propertyName

Constructor Summary

FieldAccessor(java.lang.Class objectClass, java.lang.String propertyName, java.lang.Class propertyType)

Method Summary

java.lang.String	getName() Returns property name.
protected java.lang.reflect.Field	lookupFieldInHierarchy(java.lang.Class beanClass, java.lang.String fieldName) Recursively looks for a named field in a class hierarchy.
protected java.lang.reflect.Field	prepareField(java.lang.Class beanClass, java.lang.String propertyName, java.lang.Class propertyType) Finds a field for the property, ensuring that direct access via reflection is possible.
java.lang.Object	readPropertyDirectly(java.lang.Object object) Returns a property value of an object without disturbing the object fault status.
void	writePropertyDirectly(java.lang.Object object, java.lang.Object oldValue, java.lang.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 java.lang.String propertyName

field

protected java.lang.reflect.Field field

nullValue

protected java.lang.Object nullValue

Constructor Detail

FieldAccessor

public FieldAccessor(java.lang.Class objectClass,
                     java.lang.String propertyName,
                     java.lang.Class propertyType)

Method Detail

getName

public java.lang.String getName()

Description copied from interface: PropertyAccessor

Returns property name.

Specified by:

getName in interface PropertyAccessor

readPropertyDirectly

public java.lang.Object readPropertyDirectly(java.lang.Object object)
                                      throws PropertyAccessException

Description copied from interface: PropertyAccessor

Returns a property value of an object without disturbing the object fault status.

Specified by:

readPropertyDirectly in interface PropertyAccessor

Throws:

PropertyAccessException

writePropertyDirectly

public void writePropertyDirectly(java.lang.Object object,
                                  java.lang.Object oldValue,
                                  java.lang.Object newValue)
                           throws PropertyAccessException

Description copied from interface: PropertyAccessor

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:

writePropertyDirectly in interface PropertyAccessor

Throws:

PropertyAccessException

prepareField

protected java.lang.reflect.Field prepareField(java.lang.Class beanClass,
                                               java.lang.String propertyName,
                                               java.lang.Class propertyType)

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

lookupFieldInHierarchy

protected java.lang.reflect.Field lookupFieldInHierarchy(java.lang.Class beanClass,
                                                         java.lang.String fieldName)
                                                  throws java.lang.SecurityException,
                                                         java.lang.NoSuchFieldException

Recursively looks for a named field in a class hierarchy.

Throws:

java.lang.SecurityException

java.lang.NoSuchFieldException