/*
* Copyright (C) 2007 Rob Manning
* manningr@users.sourceforge.net
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package net.sourceforge.squirrel_sql.client.update.xmlbeans;
import java.beans.XMLDecoder;
import java.beans.XMLEncoder;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import net.sourceforge.squirrel_sql.client.update.gui.ArtifactAction;
import net.sourceforge.squirrel_sql.fw.util.FileWrapper;
import net.sourceforge.squirrel_sql.fw.util.IOUtilities;
import net.sourceforge.squirrel_sql.fw.util.IOUtilitiesImpl;
/**
* This class contains utility methods that can be used to read from and write
* to files containing release xml beans. The decision to use Java's XML beans
* support over nanoxml was difficult. If I go with nanoxml, I believe I would
* need a beaninfo class and some data structures might not work. Also, if we
* want to eliminate dependency on nanoxml, using the inherent capabilities in
* Java 5 seemed to be a wiser approach.
*
* @author manningr
*/
public class UpdateXmlSerializerImpl implements UpdateXmlSerializer {
/** Allows for encoding enums. */
private EnumPersistenceDelegate enumDelegate = new EnumPersistenceDelegate();
private IOUtilities _iou = new IOUtilitiesImpl();
/**
* @see net.sourceforge.squirrel_sql.client.update.xmlbeans.UpdateXmlSerializer#write(net.sourceforge.squirrel_sql.client.update.xmlbeans.ChannelXmlBean, java.lang.String)
*/
public void write(ChannelXmlBean channelBean, String filename)
throws FileNotFoundException {
XMLEncoder os = getXmlEncoder(filename);
os.writeObject(channelBean);
os.close();
}
/**
* @see net.sourceforge.squirrel_sql.client.update.xmlbeans.UpdateXmlSerializer#write(net.sourceforge.squirrel_sql.client.update.xmlbeans.ChangeListXmlBean, java.lang.String)
*/
public void write(ChangeListXmlBean changeBean, String filename)
throws FileNotFoundException {
XMLEncoder os = getXmlEncoder(filename);
os.writeObject(changeBean);
os.close();
}
/**
* @see net.sourceforge.squirrel_sql.client.update.xmlbeans.UpdateXmlSerializer#write(net.sourceforge.squirrel_sql.client.update.xmlbeans.ChangeListXmlBean, net.sourceforge.squirrel_sql.fw.util.FileWrapper)
*/
public void write(ChangeListXmlBean changeBean, FileWrapper file)
throws FileNotFoundException {
XMLEncoder os = getXmlEncoder(file.getAbsolutePath());
os.writeObject(changeBean);
os.close();
}
/**
* @see net.sourceforge.squirrel_sql.client.update.xmlbeans.UpdateXmlSerializer#readChannelBean(java.lang.String)
*/
public ChannelXmlBean readChannelBean(String filename) throws FileNotFoundException,
IOException {
if (filename == null) {
throw new IllegalArgumentException("filename cannot be null");
}
return readChannelBean(new FileInputStream(filename));
}
/**
* @see net.sourceforge.squirrel_sql.client.update.xmlbeans.UpdateXmlSerializer#readChannelBean(net.sourceforge.squirrel_sql.fw.util.FileWrapper)
*/
public ChannelXmlBean readChannelBean(FileWrapper fileWrapper) throws FileNotFoundException,
IOException {
ChannelXmlBean result = null;
BufferedInputStream is = null;
try {
is = new BufferedInputStream(new FileInputStream(fileWrapper.getAbsolutePath()));
result = readChannelBean(is);
} finally {
_iou.closeInputStream(is);
}
return result;
}
/**
* @see net.sourceforge.squirrel_sql.client.update.xmlbeans.UpdateXmlSerializer#readChannelBean(java.io.InputStream)
*/
public ChannelXmlBean readChannelBean(InputStream is) throws IOException {
XMLDecoder bis = null;
Object result = null;
try {
bis = new XMLDecoder(new BufferedInputStream(is));
result = bis.readObject();
} finally {
if (is != null) {
is.close();
}
}
return (ChannelXmlBean) result;
}
/**
* @see net.sourceforge.squirrel_sql.client.update.xmlbeans.UpdateXmlSerializer#readChangeListBean(net.sourceforge.squirrel_sql.fw.util.FileWrapper)
*/
public ChangeListXmlBean readChangeListBean(FileWrapper file)
throws FileNotFoundException {
XMLDecoder bis = null;
FileInputStream fis = null;
Object result = null;
try {
fis = new FileInputStream(new File(file.getAbsolutePath()));
bis = new XMLDecoder(new BufferedInputStream(fis));
result = bis.readObject();
} finally {
_iou.closeInputStream(fis);
if (bis != null) {
bis.close();
}
}
return (ChangeListXmlBean) result;
}
private XMLEncoder getXmlEncoder(String filename)
throws FileNotFoundException {
XMLEncoder result = null;
BufferedOutputStream os =
new BufferedOutputStream(new FileOutputStream(filename));
result = new XMLEncoder(os);
result.setPersistenceDelegate(ArtifactAction.class, enumDelegate);
return result;
}
}