/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* ARPResource.java
*
* Created on June 25, 2001, 9:57 PM
*/
package org.apache.jena.rdfxml.xmlinput.impl;
public class ARPResource extends TaintImpl implements AResourceInternal {
// Constants cribbed from com.megginson.sax.rdf.RDFFilter
static public final boolean DEBUG = false;
final private XMLHandler arp;
final String nodeID;
static private int genIdCounter = 0;
final private int genId = genIdCounter++;
static String dummy = "http://jena.hpl.hp.com/arp/not/a/real/uri/";
static String nullDummy = "nullpointerexception://jena.hpl.hp.com/arp/";
public ARPResource(XMLHandler parent) {
this(parent,null);
}
public ARPResource(XMLHandler parent, String nid) {
arp = parent;
nodeID = nid;
if (DEBUG) {
RuntimeException rte = new RuntimeException("bnode allocated here");
rte.fillInStackTrace();
userData = rte;
}
}
// AResource interface.
@Override
public boolean isAnonymous() {
return true;
}
@Override
public String getAnonymousID() {
return nodeID==null
? ( "A" + Integer.toString(genId) )
: "U" + nodeID;
}
@Override
public String getURI() {
return null;
}
@Override
public String toString() {
return "_:"+getAnonymousID();
}
@Override
public int hashCode() {
return nodeID==null ?genId: nodeID.hashCode();
}
@Override
public boolean equals(Object o) {
if ( o == null || !(o instanceof ARPResource))
return false;
if ( this == o)
return true;
// AResourceInternal a=(AResourceInternal)o;
// if ( uri != null )
// return (!a.isAnonymous()) && uri.equals(a.getURI());
ARPResource aa = (ARPResource)o;
return nodeID != null && nodeID.equals(aa.nodeID);
}
private Object userData;
@Override
public Object getUserData() {
// if ( uri != null )
// throw new IllegalStateException("User data only supported on blank nodes");
return nodeID == null ?
userData : arp.getUserData(nodeID);
}
@Override
public void setUserData(Object d) {
// if ( uri != null )
// throw new IllegalStateException("User data only supported on blank nodes");
if ( nodeID == null )
userData = d;
else
arp.setUserData(nodeID,d);
}
/* (non-Javadoc)
* @see org.apache.jena.rdf.arp.AResource#hasNodeID()
*/
@Override
public boolean hasNodeID() {
return nodeID!=null;
}
private boolean used = false;
/* (non-Javadoc)
* @see org.apache.jena.rdf.arp.AResourceInternal#setHasBeenUsed()
*/
@Override
public void setHasBeenUsed() {
used = true;
}
/* (non-Javadoc)
* @see org.apache.jena.rdf.arp.AResourceInternal#getHasBeenUsed()
*/
@Override
public boolean getHasBeenUsed() {
return used;
}
}