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/*
 * Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
 *
 * Licensed 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. See accompanying
 * LICENSE file.
 */
package com.gemstone.gemfire.cache.client.internal.locator;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;

import com.gemstone.gemfire.distributed.internal.ServerLocation;
import com.gemstone.gemfire.internal.InternalDataSerializer;
import com.gemstone.gemfire.internal.cache.BucketServerLocation66;

/**
 * @author dsmith
 *
 */
public class SerializationHelper {

  private static void writeServerLocations(Collection/**/ serverLocations, DataOutput out) throws IOException {
    if(serverLocations == null) {
      out.writeInt(-1);
      return;
    }
    int length = serverLocations.size();
    out.writeInt(length);
    for(Iterator itr = serverLocations.iterator(); itr.hasNext(); ) {
      ServerLocation next = (ServerLocation) itr.next();
      InternalDataSerializer.invokeToData(next, out);
    }
  }

  private static void writeBucketServerLocations(Collection bucketServerLocations, DataOutput out) throws IOException {
    if(bucketServerLocations == null) {
      out.writeInt(-1);
      return;
    }
    int length = bucketServerLocations.size();
    out.writeInt(length);
    for(Iterator itr = bucketServerLocations.iterator(); itr.hasNext(); ) {
      ServerLocation next = (ServerLocation) itr.next();
      InternalDataSerializer.invokeToData(next, out);
    }
  }
  
  public static ArrayList/**/ readServerLocationList(DataInput in) throws IOException, ClassNotFoundException {
    int size = in.readInt();
    if(size < 0) {
      return null;
    }
    ArrayList serverLocations  = new ArrayList(size);
    for(int i = 0; i < size; i++) {
      ServerLocation next = new ServerLocation();
      InternalDataSerializer.invokeFromData(next, in);
      serverLocations.add(next);
    }
    return serverLocations;
  }
  
  public static void writeServerLocationList(List/**/ serverLocations, DataOutput out) throws IOException {
    writeServerLocations(serverLocations, out);
  }

  public static void writeServerLocationSet(Set/**/ serverLocations, DataOutput out) throws IOException {
    writeServerLocations(serverLocations, out);
  }

  public static void writeBucketServerLocationSet(Set bucketServerLocations, DataOutput out) throws IOException {
    writeBucketServerLocations(bucketServerLocations, out);
  }
  
  public static HashSet/**/ readServerLocationSet(DataInput in) throws IOException, ClassNotFoundException {
    int size = in.readInt();
    if(size < 0) {
      return null;
    }
    HashSet serverLocations  = new HashSet(size);
    for(int i = 0; i < size; i++) {
      ServerLocation next = new ServerLocation();
      InternalDataSerializer.invokeFromData(next, in);
      serverLocations.add(next);
    }
    return serverLocations;
  }
  
  public static HashSet readBucketServerLocationSet(DataInput in) throws IOException, ClassNotFoundException {
    int size = in.readInt();
    if(size < 0) {
      return null;
    }
    HashSet bucketServerLocations  = new HashSet(size);
    for(int i = 0; i < size; i++) {
      BucketServerLocation66 next = new BucketServerLocation66();
      InternalDataSerializer.invokeFromData(next, in);
      bucketServerLocations.add(next);
    }
    return bucketServerLocations;
  }
  

  private SerializationHelper() {
  }

}