/*
 * Copyright 2000-2016 JetBrains s.r.o.
 *
 * 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.
 */
package com.intellij.util.indexing.impl;

import com.intellij.util.indexing.ID;
import com.intellij.util.indexing.IndexExtension;
import com.intellij.util.io.KeyDescriptor;
import org.jetbrains.annotations.NotNull;

public abstract class AbstractForwardIndex<Key, Value> implements ForwardIndex<Key,Value> {
  protected final ID<Key, Value> myIndexId;
  protected final KeyDescriptor<Key> myKeyDescriptor;
  protected final IndexExtension<Key, Value, ?> myIndexExtension;

  protected AbstractForwardIndex(@NotNull IndexExtension<Key, Value, ?> extension) {
    myIndexId = extension.getName();
    myKeyDescriptor = extension.getKeyDescriptor();
    myIndexExtension = extension;
  }

  @NotNull
  public IndexExtension<Key, Value, ?> getIndexExtension() {
    return myIndexExtension;
  }
}
