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The source code/* * Sun Public License Notice * * The contents of this file are subject to the Sun Public License * Version 1.0 (the "License"). You may not use this file except in * compliance with the License. A copy of the License is available at * http://www.sun.com/ * * The Original Code is NetBeans. The Initial Developer of the Original * Code is Sun Microsystems, Inc. Portions Copyright 1997-2001 Sun * Microsystems, Inc. All Rights Reserved. */ package org.netbeans.mdr.storagemodel.transientimpl; import java.util.Map; import java.util.Collection; import java.util.Iterator; import org.netbeans.mdr.persistence.StorageException; /** * * @author Tomas Zezula */ public abstract class CompensatingTransaction { protected Object key; protected Object oldValue; public CompensatingTransaction (Object key, Object oldValue) { this.key = key; this.oldValue = oldValue; } public abstract void perform (Object target) throws StorageException; public static class AddCTx extends CompensatingTransaction { public AddCTx (Object key, Object oldValue) { super (key, oldValue); } public void perform (Object target) throws StorageException { ((TransactionalIndex)target).removeNoTx (key, oldValue); } } public static class RemoveCTx extends CompensatingTransaction { public RemoveCTx (Object key, Object oldValue) { super (key, oldValue); } public void perform (Object target) throws StorageException { ((TransactionalIndex)target).addNoTx (key, oldValue); } } public static class AddOrderedCTx extends AddCTx { int index; public AddOrderedCTx (Object key, Object value, int index) { super (key, value); this.index = index; } public void perform (Object target) throws StorageException { ((TransientMultivaluedOrderedIndex)target).removeNoTx (key, oldValue, index); } } public static class RemoveOrderedCTx extends RemoveCTx { int index; public RemoveOrderedCTx (Object key, Object value, int index) { super (key, value); this.index = index; } public void perform (Object target) throws StorageException { ((TransientMultivaluedOrderedIndex)target).addNoTx (key, oldValue, index); } } public static class CreateIndexCTx extends CompensatingTransaction { public CreateIndexCTx (Object key, Object value) { super (key, value); } public void perform (Object target) { ((Map)target).remove (key); } } public static class DropIndexCTx extends CompensatingTransaction { public DropIndexCTx (Object key, Object value) { super (key, value); } public void perform (Object target) { ((Map)target).put (key, oldValue); } } } |
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