Package org.apache.openjpa.kernel

Class DelegatingExtent<T>

java.lang.Object
org.apache.openjpa.kernel.DelegatingExtent<T>
All Implemented Interfaces:
Extent<T>
public class DelegatingExtent<T> extends Object implements Extent<T>
Delegating extent that also can perform exception translation for use in facades.
Since:
0.4.0
Author:
Abe White

  • Constructor Details

    • DelegatingExtent

      public DelegatingExtent(Extent<T> extent)
      Constructor; supply delegate.

    • DelegatingExtent

      public DelegatingExtent(Extent<T> extent, RuntimeExceptionTranslator trans)
      Constructor; supply delegate and exception translator.

  • Method Details

    • getDelegate

      public Extent<T> getDelegate()
      Return the direct delegate.

    • getInnermostDelegate

      public Extent<T> getInnermostDelegate()
      Return the native delegate.

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object

    • equals

      public boolean equals(Object other)
      Overrides:
      equals in class Object

    • translate

      protected RuntimeException translate(RuntimeException re)
      Translate the OpenJPA exception.

    • getElementType

      public Class<T> getElementType()
      Description copied from interface: Extent
      The class of extent elements.
      Specified by:
      getElementType in interface Extent<T>

    • hasSubclasses

      public boolean hasSubclasses()
      Description copied from interface: Extent
      Whether the extent includes subclasses.
      Specified by:
      hasSubclasses in interface Extent<T>

    • getBroker

      public Broker getBroker()
      Description copied from interface: Extent
      The broker that generated the extent.
      Specified by:
      getBroker in interface Extent<T>

    • getFetchConfiguration

      public FetchConfiguration getFetchConfiguration()
      Description copied from interface: Extent
      Return the (mutable) fetch configuration for this extent.
      Specified by:
      getFetchConfiguration in interface Extent<T>

    • getIgnoreChanges

      public boolean getIgnoreChanges()
      Description copied from interface: Extent
      Whether this extent will ignore changes made in the current transaction.
      Specified by:
      getIgnoreChanges in interface Extent<T>

    • setIgnoreChanges

      public void setIgnoreChanges(boolean ignoreCache)
      Description copied from interface: Extent
      Whether this extent will ignore changes made in the current transaction.
      Specified by:
      setIgnoreChanges in interface Extent<T>

    • list

      public List<T> list()
      Description copied from interface: Extent
      Returns a list of all objects represented by this extent. This method creates a List by traversing the entire iterator returned by a call to Extent.iterator(). This means that Collection.size() will work correctly, but if the extent represents a large data set, this method may be quite slow and may consume quite a bit of memory.
      Specified by:
      list in interface Extent<T>

    • iterator

      public Iterator<T> iterator()
      Description copied from interface: Extent
      Return an iterator over the extent members.
      Specified by:
      iterator in interface Extent<T>

    • closeAll

      public void closeAll()
      Description copied from interface: Extent
      Close all open iterators.
      Specified by:
      closeAll in interface Extent<T>

    • lock

      public void lock()
      Description copied from interface: Extent
      Synchronizes on an internal lock.
      Specified by:
      lock in interface Extent<T>

    • unlock

      public void unlock()
      Description copied from interface: Extent
      Release the internal lock.
      Specified by:
      unlock in interface Extent<T>