org.apache.openjpa.util
Class ProxyProperties

java.lang.Object
  java.util.Dictionary<K,V>
      java.util.Hashtable<Object,Object>
          java.util.Properties
              org.apache.openjpa.util.ProxyProperties

All Implemented Interfaces:

Serializable, Cloneable, Map<Object,Object>, Proxy, ProxyMap

public class ProxyProperties
extends Properties
implements ProxyMap

Extension of the Properties type that dirties the persistent/transactional field it is assigned to on modification. The need to dirty the field on any modification mandates that this class must override all mutator methods of the base type. This may lead to multiple calls to dirty for one state change if one mutator method of the base type calls another.

Author:

Abe White

See Also:

Serialized Form

Field Summary

Fields inherited from class java.util.Properties

defaults

Constructor Summary

ProxyProperties()

ProxyProperties(boolean trackChanges, OpenJPAConfiguration conf)

Method Summary

void	clear()
Object	copy(Object orig) Return an unproxied copy of the given instance.
Set	entrySet()
ChangeTracker	getChangeTracker() Return the change tracker for this proxy, or null if none.
OpenJPAStateManager	getOwner() Return the owning object.
int	getOwnerField() Return the owning field index.
Set	keySet()
void	load(InputStream in)
ProxyMap	newInstance(Class keyType, Class valueType, Comparator compare, boolean trackChanges, OpenJPAConfiguration conf) This method should return a new proxy of the same concrete type as the implementing class.
Object	put(Object key, Object value)
void	putAll(Map m)
Object	remove(Object key)
void	setOwner(OpenJPAStateManager sm, int field) Reset the state of the proxy, and set the owning instance of the proxy and the name of the field it is assigned to.
Object	setProperty(String key, String value)
Collection	values()
protected Object	writeReplace()

Methods inherited from class java.util.Properties

getProperty, getProperty, list, list, loadFromXML, propertyNames, save, store, storeToXML, storeToXML

Methods inherited from class java.util.Hashtable

clone, contains, containsKey, containsValue, elements, equals, get, hashCode, isEmpty, keys, rehash, size, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ProxyProperties

public ProxyProperties()

ProxyProperties

public ProxyProperties(boolean trackChanges,
                       OpenJPAConfiguration conf)

Method Detail

setOwner

public void setOwner(OpenJPAStateManager sm,
                     int field)

Description copied from interface: Proxy

Reset the state of the proxy, and set the owning instance of the proxy and the name of the field it is assigned to. Set to null to indicate that the proxy is no longer managed.

Specified by:

setOwner in interface Proxy

getOwner

public OpenJPAStateManager getOwner()

Description copied from interface: Proxy

Return the owning object.

Specified by:

getOwner in interface Proxy

getOwnerField

public int getOwnerField()

Description copied from interface: Proxy

Return the owning field index.

Specified by:

getOwnerField in interface Proxy

getChangeTracker

public ChangeTracker getChangeTracker()

Description copied from interface: Proxy

Return the change tracker for this proxy, or null if none.

Specified by:

getChangeTracker in interface Proxy

copy

public Object copy(Object orig)

Description copied from interface: Proxy

Return an unproxied copy of the given instance. This method is used by proxy managers to create backup values for use in rollback.

Specified by:

copy in interface Proxy

newInstance

public ProxyMap newInstance(Class keyType,
                            Class valueType,
                            Comparator compare,
                            boolean trackChanges,
                            OpenJPAConfiguration conf)

Description copied from interface: ProxyMap

This method should return a new proxy of the same concrete type as the implementing class. Used by the ProxyManager factories: one template instance of each type is created for the purpose of producing new instances via this method. Overcomes the performance penalties of reflection.

Specified by:

newInstance in interface ProxyMap

clear

public void clear()

Specified by:

clear in interface Map<Object,Object>

Overrides:

clear in class Hashtable<Object,Object>

keySet

public Set keySet()

Specified by:

keySet in interface Map<Object,Object>

Overrides:

keySet in class Hashtable<Object,Object>

values

public Collection values()

Specified by:

values in interface Map<Object,Object>

Overrides:

values in class Hashtable<Object,Object>

entrySet

public Set entrySet()

Specified by:

entrySet in interface Map<Object,Object>

Overrides:

entrySet in class Hashtable<Object,Object>

put

public Object put(Object key,
                  Object value)

Specified by:

put in interface Map<Object,Object>

Overrides:

put in class Hashtable<Object,Object>

putAll

public void putAll(Map m)

Specified by:

putAll in interface Map<Object,Object>

Overrides:

putAll in class Hashtable<Object,Object>

remove

public Object remove(Object key)

Specified by:

remove in interface Map<Object,Object>

Overrides:

remove in class Hashtable<Object,Object>

setProperty

public Object setProperty(String key,
                          String value)

Overrides:

setProperty in class Properties

load

public void load(InputStream in)
          throws IOException

Overrides:

load in class Properties

Throws:

IOException

writeReplace

protected Object writeReplace()
                       throws ObjectStreamException

Throws:

ObjectStreamException