| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.gora.persistency.impl; |
| |
| import java.util.BitSet; |
| |
| import org.apache.gora.persistency.Persistent; |
| import org.apache.gora.persistency.StateManager; |
| |
| /** |
| * An implementation for the StateManager. This implementation assumes |
| * every Persistent object has it's own StateManager. |
| */ |
| public class StateManagerImpl implements StateManager { |
| |
| //TODO: serialize isNew in PersistentSerializer |
| protected boolean isNew; |
| protected BitSet dirtyBits; |
| protected BitSet readableBits; |
| |
| public StateManagerImpl() { |
| } |
| |
| public void setManagedPersistent(Persistent persistent) { |
| dirtyBits = new BitSet(persistent.getSchema().getFields().size()); |
| readableBits = new BitSet(persistent.getSchema().getFields().size()); |
| isNew = true; |
| } |
| |
| @Override |
| public boolean isNew(Persistent persistent) { |
| return isNew; |
| } |
| |
| @Override |
| public void setNew(Persistent persistent) { |
| this.isNew = true; |
| } |
| |
| @Override |
| public void clearNew(Persistent persistent) { |
| this.isNew = false; |
| } |
| |
| public void setDirty(Persistent persistent, int fieldIndex) { |
| dirtyBits.set(fieldIndex); |
| readableBits.set(fieldIndex); |
| } |
| |
| public boolean isDirty(Persistent persistent, int fieldIndex) { |
| return dirtyBits.get(fieldIndex); |
| } |
| |
| public boolean isDirty(Persistent persistent) { |
| return !dirtyBits.isEmpty(); |
| } |
| |
| @Override |
| public void setDirty(Persistent persistent) { |
| dirtyBits.set(0, dirtyBits.size()); |
| } |
| |
| @Override |
| public void clearDirty(Persistent persistent, int fieldIndex) { |
| dirtyBits.clear(fieldIndex); |
| } |
| |
| public void clearDirty(Persistent persistent) { |
| dirtyBits.clear(); |
| } |
| |
| public void setReadable(Persistent persistent, int fieldIndex) { |
| readableBits.set(fieldIndex); |
| } |
| |
| public boolean isReadable(Persistent persistent, int fieldIndex) { |
| return readableBits.get(fieldIndex); |
| } |
| |
| @Override |
| public void clearReadable(Persistent persistent, int fieldIndex) { |
| readableBits.clear(fieldIndex); |
| } |
| |
| public void clearReadable(Persistent persistent) { |
| readableBits.clear(); |
| } |
| } |