/**
* DataCleaner (community edition)
* Copyright (C) 2014 Neopost - Customer Information Management
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* 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 distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.datacleaner.connection;
import java.io.File;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.util.List;
import org.apache.metamodel.DataContext;
import org.apache.metamodel.DataContextFactory;
import org.apache.metamodel.xml.XmlSaxDataContext;
import org.apache.metamodel.xml.XmlSaxTableDef;
import org.datacleaner.util.ReadObjectBuilder;
/**
* Datastore implementation for XML files.
*/
public class XmlDatastore extends UsageAwareDatastore<DataContext> implements FileDatastore {
private static final long serialVersionUID = 1L;
private final String _filename;
private final XmlSaxTableDef[] _tableDefs;
public XmlDatastore(final String name, final String filename) {
this(name, filename, null);
}
public XmlDatastore(final String name, final String filename, final XmlSaxTableDef[] tableDefs) {
super(name);
_filename = filename;
_tableDefs = tableDefs;
}
private void readObject(final ObjectInputStream stream) throws IOException, ClassNotFoundException {
ReadObjectBuilder.create(this, XmlDatastore.class).readObject(stream);
}
@Override
public String getFilename() {
return _filename;
}
public XmlSaxTableDef[] getTableDefs() {
return _tableDefs;
}
@Override
protected UsageAwareDatastoreConnection<DataContext> createDatastoreConnection() {
final File file = new File(_filename);
final DataContext dataContext;
if (_tableDefs == null || _tableDefs.length == 0) {
dataContext = DataContextFactory.createXmlDataContext(file, true);
} else {
dataContext = new XmlSaxDataContext(file, _tableDefs);
}
return new DatastoreConnectionImpl<>(dataContext, this);
}
@Override
public PerformanceCharacteristics getPerformanceCharacteristics() {
return new PerformanceCharacteristicsImpl(false, true);
}
@Override
protected void decorateIdentity(final List<Object> identifiers) {
super.decorateIdentity(identifiers);
identifiers.add(_filename);
identifiers.add(_tableDefs);
}
}