/*
Copyright (C) 2010 maik.jablonski@gmail.com
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package jfix.db4o.xstream.converter;
import java.io.File;
import jfix.db4o.Blob;
import org.apache.commons.io.FileUtils;
import com.thoughtworks.xstream.converters.SingleValueConverter;
import com.thoughtworks.xstream.core.util.Base64Encoder;
public class BlobConverter implements SingleValueConverter {
public boolean canConvert(Class clazz) {
return Blob.class.isAssignableFrom(clazz);
}
public String toString(Object obj) {
try {
File file = ((Blob) obj).getFile();
if (file.exists()) {
return new Base64Encoder().encode(FileUtils
.readFileToByteArray(file));
} else {
return "";
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public Object fromString(String str) {
Blob blob = new Blob();
try {
FileUtils.writeByteArrayToFile(blob.getFile(),
new Base64Encoder().decode(str));
} catch (Exception e) {
throw new RuntimeException(e);
}
return blob;
}
}