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

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

All Implemented Interfaces:

Serializable, PersistentField

Direct Known Subclasses:

PersistentFieldAutoProxyImplNew

public class PersistentFieldAutoProxyImpl
extends PersistentFieldBase

PeristentField implementation that attempts to detect the nature of the field it is persisting.

First checks to see if it is a Field, then Property, then DynaBean

It will match in that order.

See Also:

Serialized Form

Nested Class Summary

(package private) static class	PersistentFieldAutoProxyImpl.AutoDetectException
(package private) static class	PersistentFieldAutoProxyImpl.ExceptionWrapper

Field Summary

private PersistentField	currentPF
(package private) int	index
private PersistentFieldAutoProxyImpl.ExceptionWrapper	latestException
protected Class[]	persistentFieldClasses Define the number and ordering of the used PersistentField implementaions.
(package private) static long	serialVersionUID

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

PATH_TOKEN, rootObjectType

Constructor Summary

PersistentFieldAutoProxyImpl()

PersistentFieldAutoProxyImpl(Class clazz, String fieldname)

Method Summary

private PersistentField	createPersistentFieldForIndex()
Object	get(Object anObject) Returns the value of the field represented by this PersistentField, on the specified object.
private PersistentField	getCurrent()
Class	getType()
private void	handleException(String message, Exception e)
protected boolean	makeAccessible() A value of true indicates that this field should suppress Java language access checking when it is used.
private PersistentField	newInstance(Class pfClass)
void	set(Object obj, Object value) Sets the field represented by this PersistentField object on the specified object argument to the specified new value.
boolean	usesAccessorsAndMutators()

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

Field Detail

serialVersionUID

static final long serialVersionUID

See Also:

Constant Field Values

persistentFieldClasses

protected Class[] persistentFieldClasses

Define the number and ordering of the used PersistentField implementaions. Override this field to add new classes or to change setection order.

currentPF

private PersistentField currentPF

latestException

private PersistentFieldAutoProxyImpl.ExceptionWrapper latestException

index

int index

Constructor Detail

PersistentFieldAutoProxyImpl

public PersistentFieldAutoProxyImpl()

PersistentFieldAutoProxyImpl

public PersistentFieldAutoProxyImpl(Class clazz,
                                    String fieldname)

Method Detail

getCurrent

private PersistentField getCurrent()

handleException

private void handleException(String message,
                             Exception e)

get

public Object get(Object anObject)
           throws MetadataException

Description copied from interface: PersistentField

Returns the value of the field represented by this PersistentField, on the specified object. This implementation invokes get() on its underlying Field object.

Parameters:

anObject - - 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

set

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

Description copied from interface: PersistentField

Sets the field represented by this PersistentField object on the specified object argument to the specified new value. The new value is automatically unwrapped if the underlying field has a primitive type. This implementation invokes set() on its underlying Field object if the argument is not null. OBS IllegalArgumentExceptions are wrapped as PersistenceBrokerExceptions.

Parameters:

obj - 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

getType

public Class getType()

makeAccessible

protected boolean makeAccessible()

Description copied from class: PersistentFieldBase

A value of true indicates that this field should suppress Java language access checking when it is used.

Specified by:

makeAccessible in class PersistentFieldBase

usesAccessorsAndMutators

public boolean usesAccessorsAndMutators()

createPersistentFieldForIndex

private PersistentField createPersistentFieldForIndex()
                                               throws Exception

Throws:

Exception

newInstance

private PersistentField newInstance(Class pfClass)
                             throws Exception

Throws:

Exception