geode-core/src/main/java/org/apache/geode/internal/cache/PRContainsValueFunction.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.
 */
package org.apache.geode.internal.cache;

import java.util.Iterator;

import org.apache.geode.cache.Region;
import org.apache.geode.cache.execute.FunctionContext;
import org.apache.geode.cache.execute.RegionFunctionContext;
import org.apache.geode.internal.cache.execute.InternalFunction;

public class PRContainsValueFunction implements InternalFunction {

  @Override
  public void execute(FunctionContext context) {

    RegionFunctionContext prContext = (RegionFunctionContext) context;
    Region dataSet = prContext.getDataSet();
    Object values = context.getArguments();

    Iterator itr = dataSet.values().iterator();
    while (itr.hasNext()) {
      Object val = itr.next();
      if (val.equals(values)) {
        prContext.getResultSender().lastResult(Boolean.TRUE);
        return;
      }
    }
    prContext.getResultSender().lastResult(Boolean.FALSE);
  }

  @Override
  public String getId() {
    return getClass().getName();
  }

  @Override
  public boolean optimizeForWrite() {
    return false;
  }
}