tests/javaobject/GetKeyFunction.java

/*
 * 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.
 */
/*
 * 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 java.io.Serializable;

import org.apache.geode.cache.Declarable;
import org.apache.geode.cache.Region;
import org.apache.geode.cache.execute.FunctionAdapter;
import org.apache.geode.cache.execute.FunctionContext;
import org.apache.geode.cache.execute.RegionFunctionContext;
import java.util.Properties;

/**
 * Function that returns the value of the key passed in through the filter,
 * using the default result collector.
 */
public class GetKeyFunction extends FunctionAdapter implements Declarable {

  private static final String ID = "GetKeyFunction";

  public void execute(FunctionContext context) {
    RegionFunctionContext regionContext = (RegionFunctionContext)context;
    Region dataSet = regionContext.getDataSet();
    Object key = regionContext.getFilter().iterator().next();
    context.getResultSender().lastResult((Serializable)dataSet.get(key));
  }

  public String getId() {
    return ID;
  }

  public boolean hasResult() {
    return true;
  }

  public void init(Properties p) {
  }
  public boolean isHA() {
    return true;
  }

}