/*
* (non-Javadoc)
* @see de.hpi.bpt.graph.abs.IDirectedEdge#setVertices(de.hpi.bpt.hypergraph.abs.IVertex, de.hpi.bpt.hypergraph.abs.IVertex)
*/
@SuppressWarnings("unchecked")
public void setVertices(V s, V t) {
if (this.graph == null) return;
if (s == null || t == null) return;
if (!this.graph.isMultiGraph()) {
Collection<IDirectedHyperEdge<V>> es = this.graph.getEdgesWithSourceAndTarget(s, t);
if (es.size() > 0) {
Iterator<IDirectedHyperEdge<V>> i = es.iterator();
while (i.hasNext()) {
IDirectedHyperEdge<V> e = i.next();
if (e.getVertices().size() == 2) return;
}
}
}
Collection<V> ss = new ArrayList<V>();
Collection<V> ts = new ArrayList<V>();
if (this.source != null && this.target != null) {
ss.add(this.source);
ts.add(this.target);
super.removeSourceAndTagetVertices(ss, ts);
}
ss.clear();
ss.add(s);
ts.clear();
ts.add(t);
super.addSourceAndTagetVertices(ss, ts);
this.source = s;
this.target = t;
}
/*
* (non-Javadoc)
* @see de.hpi.bpt.graph.abs.IDirectedEdge#setTarget(de.hpi.bpt.hypergraph.abs.IVertex)
*/
public V setTarget(V v) {
if (this.graph == null) return null;
Collection<V> ts = new ArrayList<V>();
ts.add(v);
if (!this.checkEdge(super.source, ts)) return null;
super.removeTargetVertex(this.target);
this.target = super.addTargetVertex(v);
return this.target;
}
/*
* (non-Javadoc)
* @see de.hpi.bpt.graph.abs.IDirectedEdge#setSource(de.hpi.bpt.hypergraph.abs.IVertex)
*/
public V setSource(V v) {
if (this.graph == null) return null;
Collection<V> ss = new ArrayList<V>();
ss.add(v);
if (!this.checkEdge(ss, super.target)) return null;
super.removeSourceVertex(this.source);
this.source = super.addSourceVertex(v);
return this.source;
}
/*
* (non-Javadoc)
* @see de.hpi.bpt.hypergraph.abs.AbstractDirectedHyperEdge#destroy()
*/
@Override
public void destroy() {
super.destroy();
this.graph = null;
}