/* Copyright (c) 2001-2009, The HSQL Development Group
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the HSQL Development Group nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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package org.hsqldb_voltpatches.scriptio;
import java.io.IOException;
import java.util.zip.Deflater;
import java.util.zip.DeflaterOutputStream;
import org.hsqldb_voltpatches.Database;
import org.hsqldb_voltpatches.Error;
import org.hsqldb_voltpatches.ErrorCode;
import org.hsqldb_voltpatches.lib.FileAccess;
/**
*
* @author Fred Toussi (fredt@users dot sourceforge.net)
* @since 1.7.2
* @version 1.7.2
*/
class ScriptWriterZipped extends ScriptWriterBinary {
private static final int bufferSize = 1 << 15;
ScriptWriterZipped(Database db, String file, boolean includeCached,
boolean newFile) {
super(db, file, includeCached, newFile);
}
/**
* Override the underlying method with no operation.
*/
public void sync() {}
protected void openFile() {
try {
FileAccess fa = database.getFileAccess();
java.io.OutputStream fos = fa.openOutputStreamElement(outFile);
outDescriptor = fa.getFileSync(fos);
fileStreamOut = new DeflaterOutputStream(fos,
new Deflater(Deflater.DEFAULT_COMPRESSION), bufferSize);
} catch (IOException e) {
throw Error.error(ErrorCode.FILE_IO_ERROR,
ErrorCode.M_Message_Pair, new Object[] {
e.toString(), outFile
});
}
}
/**
* This may not really be necessary, unless we add implementations where
* non-compressed data is added to the end of the copressed part.
*/
protected void finishStream() throws IOException {
((DeflaterOutputStream) fileStreamOut).finish();
fileStreamOut.flush();
}
}