/*
 * 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.cache.lucene.internal;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;

import org.apache.geode.cache.lucene.LuceneResultStruct;
import org.apache.geode.internal.serialization.DataSerializableFixedID;
import org.apache.geode.internal.serialization.DeserializationContext;
import org.apache.geode.internal.serialization.KnownVersion;
import org.apache.geode.internal.serialization.SerializationContext;

public class LuceneResultStructImpl<K, V>
    implements LuceneResultStruct<K, V>, DataSerializableFixedID {
  K key;
  V value;
  float score;

  public LuceneResultStructImpl() {}

  public LuceneResultStructImpl(K key, V value, float score) {
    this.key = key;
    this.value = value;
    this.score = score;
  }

  @Override
  public K getKey() {
    return key;
  }

  @Override
  public V getValue() {
    return value;
  }

  @Override
  public float getScore() {
    return score;
  }

  @Override
  public int hashCode() {
    final int prime = 31;
    int result = 1;
    result = prime * result + ((key == null) ? 0 : key.hashCode());
    result = prime * result + Float.floatToIntBits(score);
    result = prime * result + ((value == null) ? 0 : value.hashCode());
    return result;
  }

  @Override
  public boolean equals(Object obj) {
    if (this == obj) {
      return true;
    }
    if (obj == null) {
      return false;
    }
    if (getClass() != obj.getClass()) {
      return false;
    }
    LuceneResultStructImpl other = (LuceneResultStructImpl) obj;
    if (key == null) {
      if (other.key != null) {
        return false;
      }
    } else if (!key.equals(other.key)) {
      return false;
    }
    if (Float.floatToIntBits(score) != Float.floatToIntBits(other.score)) {
      return false;
    }
    if (value == null) {
      return other.value == null;
    } else
      return value.equals(other.value);
  }

  @Override
  public String toString() {
    return "LuceneResultStructImpl [key=" + key + ", value=" + value + ", score=" + score + "]";
  }

  @Override
  public KnownVersion[] getSerializationVersions() {
    return null;
  }

  @Override
  public int getDSFID() {
    return LUCENE_RESULT_STRUCT;
  }

  @Override
  public void toData(DataOutput out,
      SerializationContext context) throws IOException {
    context.getSerializer().writeObject(key, out);
    context.getSerializer().writeObject(value, out);
    out.writeFloat(score);
  }

  @Override
  public void fromData(DataInput in,
      DeserializationContext context) throws IOException, ClassNotFoundException {
    key = context.getDeserializer().readObject(in);
    value = context.getDeserializer().readObject(in);
    score = in.readFloat();
  }

}
