/* Copyright 2004 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.xmlbeans.impl.store;
import org.apache.xmlbeans.impl.store.Splay.CursorGoober;
import java.util.ArrayList;
public final class CursorData
{
public static CursorData getOne ( Root r )
{
ArrayList dataCache = (ArrayList) tl_CachedCursorData.get();
CursorData cd;
if (dataCache.size() == 0)
cd = new CursorData( r );
else
{
cd = (CursorData) dataCache.remove( dataCache.size() - 1 );
cd._goober.set( r );
}
return cd;
}
private CursorData ( Root r )
{
_goober = new CursorGoober( r );
}
private static ThreadLocal tl_CachedCursorData =
new ThreadLocal() { protected Object initialValue() { return new ArrayList(); } };
protected void release ( boolean cache )
{
if (_goober.getSplay() != null)
{
clearSelections();
if (_stack != null)
_stack.dispose();
_goober.release();
if (cache)
{
ArrayList dataCache = (ArrayList) tl_CachedCursorData.get();
if (dataCache.size() < 128)
dataCache.add( this );
}
}
}
protected void finalize ( )
{
Splay s = _goober.getSplay();
if (s != null)
{
synchronized ( _goober.getRoot() )
{
release(false);
}
}
}
protected void clearSelections ( )
{
if (_selections != null)
_selections.dispose();
_currentSelection = -2;
}
public final CursorGoober _goober;
protected Cursor.Selections _stack;
protected Cursor.Selections _selections;
protected int _currentSelection;
}