/**
* Copyright (C) 2010 Orbeon, Inc.
*
* 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
* 2.1 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.
*
* The full text of the license is available at http://www.gnu.org/copyleft/lesser.html
*/
package org.orbeon.oxf.transformer.xupdate.statement;
import org.orbeon.dom4j.Node;
import org.orbeon.jaxen.NamespaceContext;
import org.orbeon.oxf.common.ValidationException;
import org.orbeon.oxf.transformer.xupdate.DocumentContext;
import org.orbeon.oxf.transformer.xupdate.Statement;
import org.orbeon.oxf.transformer.xupdate.VariableContextImpl;
import org.orbeon.oxf.xml.dom4j.LocationData;
import javax.xml.transform.URIResolver;
import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
public class NodeSet extends Statement {
private String select;
private NamespaceContext namespaceContext;
public NodeSet(LocationData locationData, String select, NamespaceContext namespaceContext) {
super(locationData);
this.select = select;
this.namespaceContext = namespaceContext;
}
public Object execute(final URIResolver uriResolver, Object context, VariableContextImpl variableContext, DocumentContext documentContext) {
final Object selected = Utils.evaluate(uriResolver, context, variableContext, documentContext, getLocationData(), select, namespaceContext);
if (selected == null) {
return Collections.EMPTY_LIST;
} else if (selected instanceof Node) {
return Arrays.asList(new Node[]{ (Node) selected });
} else if (selected instanceof List) {
// List result = new ArrayList(((List) selected).size());
for (Iterator i = ((List) selected).iterator(); i.hasNext();) {
final Object o = i.next();
if (!(o instanceof Node || o instanceof List))
throw new ValidationException("Unsupported type: " + o.getClass().getName(), getLocationData());
// result.add(o);
}
return selected;
// return result;
} else {
throw new ValidationException("Unsupported type: " + selected.getClass().getName(), getLocationData());
}
}
}