/* 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 ( ) | |
{ | |
if (_goober.getSplay() != null) | |
{ | |
clearSelections(); | |
if (_stack != null) | |
_stack.dispose(); | |
_goober.set( null, 0 ); | |
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(); | |
} | |
} | |
} | |
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; | |
} |