Package org.apache.openjpa.kernel

Class ExtentImpl<T>

  • All Implemented Interfaces:
    Extent<T>
    public class ExtentImpl<T>
extends java.lang.Object
implements Extent<T>
    Representation of all members of a persistent class.
    Author:
    Abe White, Patrick Linskey

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void closeAll()
      Close all open iterators.
      Broker getBroker()
      The broker that generated the extent.
      java.lang.Class<T> getElementType()
      The class of extent elements.
      FetchConfiguration getFetchConfiguration()
      Return the (mutable) fetch configuration for this extent.
      boolean getIgnoreChanges()
      Whether this extent will ignore changes made in the current transaction.
      boolean hasSubclasses()
      Whether the extent includes subclasses.
      java.util.Iterator<T> iterator()
      Return an iterator over the extent members.
      java.util.List<T> list()
      Returns a list of all objects represented by this extent.
      void lock()
      Synchronizes on an internal lock.
      void setIgnoreChanges​(boolean ignoreChanges)
      Whether this extent will ignore changes made in the current transaction.
      void unlock()
      Release the internal lock.

      • Methods inherited from class java.lang.Object

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

    • Method Detail

      • 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 ignoreChanges)
        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 java.util.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 java.util.Iterator<T> iterator()
        Description copied from interface: Extent
        Return an iterator over the extent members.
        Specified by:
        iterator 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>

      • getElementType

        public java.lang.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>

      • 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>