/***********************************************************************************************************************
* Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu)
*
* 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 eu.stratosphere.core.fs.local;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import eu.stratosphere.core.fs.FSDataInputStream;
/**
* The <code>LocalDataInputStream</code> class is a wrapper class for a data
* input stream to the local file system.
*
*/
public class LocalDataInputStream extends FSDataInputStream {
/**
* The file input stream used to read data.
*/
private FileInputStream fis = null;
/**
* Constructs a new <code>LocalDataInputStream</code> object from a given {@link File} object.
*
* @param file
* the {@link File} object the data stream is written to
* @throws IOException
* thrown if the data input stream cannot be created
*/
public LocalDataInputStream(final File file) throws IOException {
this.fis = new FileInputStream(file);
}
@Override
public void seek(final long desired) throws IOException {
this.fis.getChannel().position(desired);
}
@Override
public int read() throws IOException {
return this.fis.read();
}
@Override
public int read(final byte[] buffer, final int offset, final int length) throws IOException {
return this.fis.read(buffer, offset, length);
}
@Override
public void close() throws IOException {
this.fis.close();
}
@Override
public int available() throws IOException {
return this.fis.available();
}
@Override
public long skip(final long n) throws IOException {
return this.fis.skip(n);
}
}