/*
* eXist Open Source Native XML Database
* Copyright (C) 2001-2009 The eXist Project
* http://exist-db.org
*
* 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 2
* 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, write to the Free Software Foundation
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $Id$
*/
package org.exist.xquery.functions.xmldb;
import org.apache.log4j.Logger;
import org.exist.dom.QName;
import org.exist.xquery.Cardinality;
import org.exist.xquery.FunctionSignature;
import org.exist.xquery.XPathException;
import org.exist.xquery.XQueryContext;
import org.exist.xquery.value.AnyURIValue;
import org.exist.xquery.value.FunctionParameterSequenceType;
import org.exist.xquery.value.Sequence;
import org.exist.xquery.value.SequenceType;
import org.exist.xquery.value.Type;
import org.xmldb.api.base.Collection;
import org.xmldb.api.base.Resource;
import org.xmldb.api.base.XMLDBException;
import org.xmldb.api.modules.CollectionManagementService;
/**
* @author Wolfgang Meier (wolfgang@exist-db.org)
*
*/
public class XMLDBRemove extends XMLDBAbstractCollectionManipulator {
protected static final Logger logger = Logger.getLogger(XMLDBRemove.class);
public final static FunctionSignature signatures[] = {
new FunctionSignature(
new QName("remove", XMLDBModule.NAMESPACE_URI, XMLDBModule.PREFIX),
"Removes the collection $collection-uri and its contents from the database. " +
XMLDBModule.COLLECTION_URI,
new SequenceType[] {
new FunctionParameterSequenceType("collection-uri", Type.STRING, Cardinality.EXACTLY_ONE, "The collection URI")},
new SequenceType(Type.ITEM, Cardinality.EMPTY)
),
new FunctionSignature(
new QName("remove", XMLDBModule.NAMESPACE_URI, XMLDBModule.PREFIX),
"Removes the resource $resource from the collection $collection-uri. " +
XMLDBModule.COLLECTION_URI,
new SequenceType[] {
new FunctionParameterSequenceType("collection-uri", Type.STRING, Cardinality.EXACTLY_ONE, "The collection URI"),
new FunctionParameterSequenceType("resource", Type.STRING, Cardinality.EXACTLY_ONE, "The resource")},
new SequenceType(Type.ITEM, Cardinality.EMPTY)
)
};
public XMLDBRemove(XQueryContext context, FunctionSignature signature) {
super(context, signature);
}
/* (non-Javadoc)
* @see org.exist.xquery.BasicFunction#eval(org.exist.xquery.value.Sequence[], org.exist.xquery.value.Sequence)
*/
public Sequence evalWithCollection(Collection collection, Sequence[] args, Sequence contextSequence)
throws XPathException {
if(getSignature().getArgumentCount() == 2) {
String doc = new AnyURIValue(args[1].itemAt(0).getStringValue()).toXmldbURI().toString();
try {
Resource resource = collection.getResource(doc);
if (resource == null) {
logger.error("Resource " + doc + " not found");
throw new XPathException(this, "Resource " + doc + " not found");
}
collection.removeResource(resource);
} catch (XMLDBException e) {
logger.error(e.getMessage());
throw new XPathException(this, "XMLDB exception caught: " + e.getMessage(), e);
}
} else {
try {
CollectionManagementService service = (CollectionManagementService)
collection.getService("CollectionManagementService", "1.0");
service.removeCollection(collection.getName());
} catch (XMLDBException e) {
logger.error("Cannot remove collection: " + e.getMessage());
throw new XPathException(this, "Cannot remove collection: " + e.getMessage(), e);
}
}
return Sequence.EMPTY_SEQUENCE;
}
}