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Java Source Code / Java Documentation » Database ORM » db ojb » org.apache.ojb.broker.core.proxy   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.apache.ojb.broker.core.proxy.CollectionProxyDefaultImpl All known Subclasses:   org.apache.ojb.broker.core.proxy.ListProxyDefaultImpl,  org.apache.ojb.broker.core.proxy.SetProxyDefaultImpl, CollectionProxyDefaultImpl public class CollectionProxyDefaultImpl implements Collection,ManageableCollection,CollectionProxy(Code) A place holder for a whole collection to support deferred loading of relationships. The complete collection is loaded on access to the data. author:    Jakob Braeuchi version:    $Id: CollectionProxyDefaultImpl.java,v 1.7.2.7 2005/12/21 22:25:30 tomdz Exp $ Constructor Summary public   CollectionProxyDefaultImpl(PBKey brokerKey, Query query)      Creates a new collection proxy (uses org.apache.ojb.broker.util.collections.RemovalAwareCollection as the collection class). public   CollectionProxyDefaultImpl(PBKey brokerKey, Class collClass, Query query)      Creates a new collection proxy that uses the given collection type. Method Summary public  boolean add(Object o)      public  boolean addAll(Collection c)      public synchronized  void addListener(CollectionProxyListener listener)      Adds a listener to this collection. protected  void afterLoading()      Notifies all listeners that the data has been loaded. public  void afterStore(PersistenceBroker broker)      protected  void beforeLoading()      Notifies all listeners that the data is about to be loaded. public  void clear()      Clears the proxy. public  boolean contains(Object o)      public  boolean containsAll(Collection c)      protected synchronized  PersistenceBroker getBroker()      Acquires a broker instance. public  PBKey getBrokerKey()      Returns the key of the persistence broker used by this collection. public  Class getCollectionClass()      Returns the collection type. public synchronized  Collection getData()      Returns the collection data, load it if not already done so. protected  Object getProfileKey()      Returns the metadata profile key used when creating this proxy. public  Query getQuery()      Returns the defining query. public  boolean isEmpty()      public  boolean isLoaded()      Determines whether the collection data already has been loaded from the database. public  Iterator iterator()      protected  Collection loadData()      Loads the data from the database. protected  void loadProfileIfNeeded()      Reactivates metadata profile used when creating proxy, if needed. protected synchronized  int loadSize()      Determines the number of elements that the query would return. public  void ojbAdd(Object anObject)      public  void ojbAddAll(ManageableCollection otherCollection)      public  Iterator ojbIterator()      protected synchronized  void releaseBroker(PersistenceBroker broker)      Release the broker instance. public  boolean remove(Object o)      public  boolean removeAll(Collection c)      public synchronized  void removeListener(CollectionProxyListener listener)      Removes the given listener from this collecton. public  boolean retainAll(Collection c)      protected  void setBrokerKey(PBKey brokerKey)      Sets the key of the persistence broker used by this collection. protected  void setCollectionClass(Class collClass)      Sets the collection type. public  void setData(Collection data)      Sets the collection data. public  void setProfileKey(Object profileKey)      Sets the metadata profile key used when creating this proxy. protected  void setQuery(Query query)      Sets the defining query. protected synchronized  void setSize(int size)      Sets the size internally. public  int size()      public  Object[] toArray()      public  Object[] toArray(Object[] a)      Constructor Detail CollectionProxyDefaultImpl public CollectionProxyDefaultImpl(PBKey brokerKey, Query query)(Code) Creates a new collection proxy (uses org.apache.ojb.broker.util.collections.RemovalAwareCollection as the collection class). Parameters:   brokerKey - The key of the persistence broker Parameters:   query - The defining query CollectionProxyDefaultImpl public CollectionProxyDefaultImpl(PBKey brokerKey, Class collClass, Query query)(Code) Creates a new collection proxy that uses the given collection type. Parameters:   brokerKey - The key of the persistence broker Parameters:   collClass - The collection type Parameters:   query - The defining query Method Detail add public boolean add(Object o)(Code) See Also:   Collection.add(Object) addAll public boolean addAll(Collection c)(Code) See Also:   Collection.addAll(Collection) addListener public synchronized void addListener(CollectionProxyListener listener)(Code) Adds a listener to this collection. Parameters:   listener - The listener to add afterLoading protected void afterLoading()(Code) Notifies all listeners that the data has been loaded. afterStore public void afterStore(PersistenceBroker broker) throws PersistenceBrokerException(Code) See Also:   org.apache.ojb.broker.ManageableCollection.afterStore(PersistenceBroker broker) beforeLoading protected void beforeLoading()(Code) Notifies all listeners that the data is about to be loaded. clear public void clear()(Code) Clears the proxy. A cleared proxy is defined as loaded See Also:   Collection.clear contains public boolean contains(Object o)(Code) See Also:   Collection.contains(Object) containsAll public boolean containsAll(Collection c)(Code) See Also:   Collection.containsAll(Collection) getBroker protected synchronized PersistenceBroker getBroker() throws PBFactoryException(Code) Acquires a broker instance. If no PBKey is available a runtime exception will be thrown. A broker instance getBrokerKey public PBKey getBrokerKey()(Code) Returns the key of the persistence broker used by this collection. The broker key getCollectionClass public Class getCollectionClass()(Code) Returns the collection type. The collection type getData public synchronized Collection getData()(Code) Returns the collection data, load it if not already done so. The data getProfileKey protected Object getProfileKey()(Code) Returns the metadata profile key used when creating this proxy. brokerKey The key of the broker getQuery public Query getQuery()(Code) Returns the defining query. The query isEmpty public boolean isEmpty()(Code) See Also:   Collection.isEmpty isLoaded public boolean isLoaded()(Code) Determines whether the collection data already has been loaded from the database. true if the data is already loaded iterator public Iterator iterator()(Code) See Also:   Collection.iterator loadData protected Collection loadData() throws PersistenceBrokerException(Code) Loads the data from the database. Override this method if the objects shall be loaded in a specific way. The loaded data loadProfileIfNeeded protected void loadProfileIfNeeded()(Code) Reactivates metadata profile used when creating proxy, if needed. Calls to this method should be guarded by checking CollectionProxyDefaultImpl._perThreadDescriptorsEnabled since the profile never needs to be reloaded if not using pre-thread metadata changes. loadSize protected synchronized int loadSize() throws PersistenceBrokerException(Code) Determines the number of elements that the query would return. Override this method if the size shall be determined in a specific way. The number of elements ojbAdd public void ojbAdd(Object anObject)(Code) See Also:   org.apache.ojb.broker.ManageableCollection.ojbAdd(Object) ojbAddAll public void ojbAddAll(ManageableCollection otherCollection)(Code) See Also:   org.apache.ojb.broker.ManageableCollection.ojbAddAll(ManageableCollection) ojbIterator public Iterator ojbIterator()(Code) See Also:   org.apache.ojb.broker.ManageableCollection.ojbIterator releaseBroker protected synchronized void releaseBroker(PersistenceBroker broker)(Code) Release the broker instance. remove public boolean remove(Object o)(Code) See Also:   Collection.remove(Object) removeAll public boolean removeAll(Collection c)(Code) See Also:   Collection.removeAll(Collection) removeListener public synchronized void removeListener(CollectionProxyListener listener)(Code) Removes the given listener from this collecton. Parameters:   listener - The listener to remove retainAll public boolean retainAll(Collection c)(Code) See Also:   Collection.retainAll(Collection) setBrokerKey protected void setBrokerKey(PBKey brokerKey)(Code) Sets the key of the persistence broker used by this collection. Parameters:   brokerKey - The key of the broker setCollectionClass protected void setCollectionClass(Class collClass)(Code) Sets the collection type. Parameters:   collClass - The collection type setData public void setData(Collection data)(Code) Sets the collection data. Parameters:   data - The data setProfileKey public void setProfileKey(Object profileKey)(Code) Sets the metadata profile key used when creating this proxy. Parameters:   profileKey - the metadata profile key setQuery protected void setQuery(Query query)(Code) Sets the defining query. Parameters:   query - The query setSize protected synchronized void setSize(int size)(Code) Sets the size internally. Parameters:   size - The new size size public int size()(Code) See Also:   Collection.size toArray public Object[] toArray()(Code) See Also:   Collection.toArray toArray public Object[] toArray(Object[] a)(Code) See Also:   Collection.toArray(Object[]) Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)