/*
* HA-JDBC: High-Availability JDBC
* Copyright (C) 2013 Paul Ferraro
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package net.sf.hajdbc.io.file;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Reader;
import java.io.Writer;
import java.nio.CharBuffer;
import net.sf.hajdbc.io.InputSinkChannel;
import net.sf.hajdbc.util.Files;
import net.sf.hajdbc.util.Resources;
/**
* Reader channel for writing to, and reading from, a file sink..
* @author Paul Ferraro
*/
public class FileReaderSinkChannel implements InputSinkChannel<Reader, File>
{
@Override
public File write(Reader reader) throws IOException
{
File file = Files.createTempFile(FileInputSinkStrategy.TEMP_FILE_SUFFIX);
Writer writer = new FileWriter(file);
try
{
CharBuffer buffer = CharBuffer.allocate(BUFFER_SIZE);
while (reader.read(buffer) > 0)
{
buffer.flip();
writer.append(buffer);
buffer.clear();
}
return file;
}
finally
{
Resources.close(writer);
}
}
@Override
public Reader read(File sink) throws IOException
{
return new BufferedReader(new FileReader(sink), BUFFER_SIZE);
}
}