| /* |
| * 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 javaobject; |
| |
| import org.apache.geode.DataSerializable; |
| import org.apache.geode.Delta; |
| import org.apache.geode.InvalidDeltaException; |
| import org.apache.geode.cache.Declarable; |
| import org.apache.geode.Instantiator; |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import java.util.Properties; |
| |
| public class DeltaEx implements DataSerializable, Delta, Declarable { |
| |
| private int counter = 0; |
| |
| private boolean isDelta = false; |
| |
| static { |
| Instantiator.register(new Instantiator(DeltaEx.class, (byte) 1) { |
| public DataSerializable newInstance() { |
| return new DeltaEx(); |
| } |
| }); |
| } |
| |
| public boolean hasDelta( ) |
| { |
| return isDelta; |
| } |
| |
| public void fromData( DataInput in ) throws IOException |
| { |
| counter = in.readInt( ); |
| isDelta = false; |
| } |
| |
| public void toData( DataOutput out ) throws IOException |
| { |
| out.writeInt( counter ); |
| } |
| |
| public void fromDelta( DataInput in ) throws IOException |
| { |
| int delta1 = in.readInt( ); |
| if ( delta1 == 0 ) |
| throw new InvalidDeltaException( ); |
| |
| counter += delta1; |
| isDelta = true; |
| } |
| |
| public void toDelta( DataOutput out ) throws IOException |
| { |
| out.writeInt( 1 ); |
| } |
| |
| public void init( Properties props ) |
| { |
| counter = 0; |
| isDelta = false; |
| } |
| |
| }; |