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 gnu.gcj.RawData;
/** Native file-based {@link IndexInput} implementation, using GCJ.
*
* @author Doug Cutting
*/
public class GCJIndexInput extends IndexInput {
private String file;
private int fd;
private long fileLength;
public RawData data;
public RawData pointer;
private boolean isClone;
public GCJIndexInput(String file) throws IOException {
this.file = file;
open();
}
private native void open() throws IOException;
public native byte readByte() throws IOException;
public native void readBytes(byte[] b, int offset, int len)
throws IOException;
public native int readVInt() throws IOException;
public native long getFilePointer();
public native void seek(long pos) throws IOException;
public long length() { return fileLength; }
public Object clone() {
GCJIndexInput clone = (GCJIndexInput)super.clone();
clone.isClone = true;
return clone;
}
public void close() throws IOException {
if (!isClone)
doClose();
}
private native void doClose() throws IOException;
}
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