gcjdirectory.java

来自「一套java版本的搜索引擎源码」· Java 代码 · 共 40 行

package org.apache.lucene.store;

/**
 * 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.
 */

import java.io.IOException;
import java.io.File;

/** Native file-based {@link Directory} implementation, using GCJ.
 *
 * @author Doug Cutting
 */
public class GCJDirectory extends FSDirectory {

  public IndexInput openInput(String name) throws IOException {
    // conserve address space by only mmapping the one index file that most
    // impacts performance
    if (name.endsWith(".frq")) {
      return new GCJIndexInput(new File(getFile(), name).getPath());
    } else {
      return super.openInput(name);
    }
  }
}