src.com.hp.hpl.jena.rdf.arp.states.Collection Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jena Show documentation
Show all versions of jena Show documentation
Jena is a Java framework for building Semantic Web applications. It provides a programmatic environment for RDF, RDFS and OWL, SPARQL and includes a rule-based inference engine.
/*
* (c) Copyright 2005, 2006, 2007, 2008 Hewlett-Packard Development Company, LP
* [See end of file]
*/
package com.hp.hpl.jena.rdf.arp.states;
import org.xml.sax.Attributes;
import org.xml.sax.SAXParseException;
import com.hp.hpl.jena.rdf.arp.impl.ANode;
import com.hp.hpl.jena.rdf.arp.impl.ARPResource;
import com.hp.hpl.jena.rdf.arp.impl.AbsXMLContext;
abstract class Collection extends WantDescription {
// TODO: not for 2.3. document this carefully.
WantsObjectI nextSlot;
public Collection(WantsObjectFrameI s, AbsXMLContext x) {
super(s, x);
nextSlot = s;
}
ANode bnode;
public FrameI startElement(String uri, String localName, String rawName,
Attributes atts) throws SAXParseException {
FrameI fi = super.startElement(uri,localName,rawName,atts);
ANode prevNode = bnode;
bnode = new ARPResource(arp);
try {
nextSlot.theObject(bnode);
}
finally {
if (prevNode != null)
arp.endLocalScope(prevNode);
}
firstTriple(bnode,subject);
final ANode thisNode = bnode;
nextSlot = new WantsObjectI() {
public void theObject(ANode a) {
restTriple(thisNode,a);
}
};
return fi;
}
/** Must use second bnode in the first triple.
Can use either bnode in further triples.
*/
abstract void restTriple(ANode subj,ANode obj);
/** Must use both bnodes in the first triple.
Can use either bnode in further triples.
*/
abstract void firstTriple(ANode subj, ANode obj);
abstract ANode nil() ;
final public void endElement() throws SAXParseException {
nextSlot.theObject(nil());
if (bnode != null) {
arp.endLocalScope(bnode);
bnode = null;
}
super.endElement();
}
public void abort() {
if (bnode != null) {
arp.endLocalScope(bnode);
bnode = null;
}
super.abort();
}
}
/*
* (c) Copyright 2005, 2006, 2007, 2008 Hewlett-Packard Development Company, LP
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/