org.apache.openjpa.util
Class Proxies

java.lang.Object
  org.apache.openjpa.util.Proxies

public class Proxies
extends Object

Utility methods for managing proxies.

Author:

Abe White

Field Summary

static int	MODE_ENTRY
static int	MODE_KEY
static int	MODE_VALUE

Constructor Summary

Proxies()

Method Summary

static void	assertAllowedType(Object value, Class allowed) Used by proxy types to check that an attempt to add a new value is legal.
static void	dirty(Proxy proxy) Used by proxy types to dirty their owner.
static Set	entrySet(ProxyMap proxy, Set set, int mode) Return a proxy for the given map key or entry set.
static boolean	isOwner(Proxy proxy, OpenJPAStateManager sm, int field) Used by proxy types to check if the given owners and field names are equivalent.
static Iterator	iterator(ProxyCollection proxy, Iterator itr) Return an iterator that dirties its owner on calls to remove.
static ListIterator	listIterator(ProxyCollection proxy, ListIterator itr, Class allowed) Return a proxy iterator that dirties its owner on remove, set, and add.
static void	removed(Proxy proxy, Object removed, boolean key) Used by proxy types to notify their owner that an element has been removed.

Methods inherited from class java.lang.Object

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

Field Detail

MODE_ENTRY

public static final int MODE_ENTRY

See Also:

Constant Field Values

MODE_KEY

public static final int MODE_KEY

See Also:

Constant Field Values

MODE_VALUE

public static final int MODE_VALUE

See Also:

Constant Field Values

Constructor Detail

Proxies

public Proxies()

Method Detail

isOwner

public static boolean isOwner(Proxy proxy,
                              OpenJPAStateManager sm,
                              int field)

Used by proxy types to check if the given owners and field names are equivalent.

assertAllowedType

public static void assertAllowedType(Object value,
                                     Class allowed)

Used by proxy types to check that an attempt to add a new value is legal.

dirty

public static void dirty(Proxy proxy)

Used by proxy types to dirty their owner.

removed

public static void removed(Proxy proxy,
                           Object removed,
                           boolean key)

Used by proxy types to notify their owner that an element has been removed.

iterator

public static Iterator iterator(ProxyCollection proxy,
                                Iterator itr)

Return an iterator that dirties its owner on calls to remove. This iterator assumes that the given proxy collection uses a CollectionChangeTracker.

listIterator

public static ListIterator listIterator(ProxyCollection proxy,
                                        ListIterator itr,
                                        Class allowed)

Return a proxy iterator that dirties its owner on remove, set, and add. This iterator assumes that the given proxy collection uses a CollectionChangeTracker.

entrySet

public static Set entrySet(ProxyMap proxy,
                           Set set,
                           int mode)

Return a proxy for the given map key or entry set.