org.apache.ojb.broker.metadata.fieldaccess
Class PersistentFieldDirectImpl

java.lang.Object
  org.apache.ojb.broker.metadata.fieldaccess.PersistentFieldBase
      org.apache.ojb.broker.metadata.fieldaccess.PersistentFieldDirectImpl

All Implemented Interfaces:

Serializable, PersistentField

Direct Known Subclasses:

PersistentFieldDirectAccessImplNew, PersistentFieldPrivilegedImpl

public class PersistentFieldDirectImpl
extends PersistentFieldBase

This PersistentField implementation is the high-speed version of the access strategies.
It does not cooperate with an AccessController, but accesses the fields directly. This implementation persistent attributes don't need getters and setters and don't have to be declared public or protected. Only the the metadata field names have to match the class fields.

Version:

$Id: PersistentFieldDirectImpl.java,v 1.1 2007-08-24 22:17:35 ewestfal Exp $

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.ojb.broker.metadata.fieldaccess.PersistentFieldBase

PATH_TOKEN, rootObjectType

Constructor Summary

PersistentFieldDirectImpl()

PersistentFieldDirectImpl(Class type, String fieldname)

Method Summary

Object	get(Object target) do not override this method, have a look at getValueFrom(java.lang.reflect.Field, Object)
protected Field	getField() Returns the underlying field object.
Class	getType()
protected Object	getValueFrom(Field field, Object target)
protected boolean	isNestedField()
protected boolean	makeAccessible() This implementation returns always 'true'.
void	set(Object target, Object value) do not override this method, have a look at setValueFor(java.lang.reflect.Field, Object, Object)
protected void	setValueFor(Field field, Object target, Object value)
boolean	usesAccessorsAndMutators() Always returns 'false'.

Methods inherited from class org.apache.ojb.broker.metadata.fieldaccess.PersistentFieldBase

buildErrorGetMsg, buildErrorSetMsg, getDeclaringClass, getFieldGraph, getLog, getName, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

PersistentFieldDirectImpl

public PersistentFieldDirectImpl()

PersistentFieldDirectImpl

public PersistentFieldDirectImpl(Class type,
                                 String fieldname)

Method Detail

getType

public Class getType()

getField

protected Field getField()

Returns the underlying field object. If parameter setAccessible is true the field access checking was suppressed.

isNestedField

protected boolean isNestedField()

set

public void set(Object target,
                Object value)
         throws MetadataException

do not override this method, have a look at setValueFor(java.lang.reflect.Field, Object, Object)

Parameters:

target - The target object (no proxy objects allowed).

value - The value to set.

Throws:

MetadataException - if there is an error setting this field value on obj

See Also:

Field

get

public Object get(Object target)
           throws MetadataException

do not override this method, have a look at getValueFrom(java.lang.reflect.Field, Object)

Parameters:

target - - The object instance (proxy objects are not allowed here) which we are trying to get the field value from.

Throws:

MetadataException - if there is an error getting this field value from obj

See Also:

Field

getValueFrom

protected Object getValueFrom(Field field,
                              Object target)

setValueFor

protected void setValueFor(Field field,
                           Object target,
                           Object value)

makeAccessible

protected boolean makeAccessible()

This implementation returns always 'true'.

Specified by:

makeAccessible in class PersistentFieldBase

usesAccessorsAndMutators

public boolean usesAccessorsAndMutators()

Always returns 'false'.

See Also:

PersistentField.usesAccessorsAndMutators()