/** Object output methods */
public String internalGraphToString() {
String out = new String();
VertexCollection sortedVertices = values.topologicalSort();
for (int i = 0; i < sortedVertices.size(); i++) {
out += ((DiscreteAttributeItem) sortedVertices.get(i).getContent()).getValue();
// As long as we're not on the last attribute
if (i < sortedVertices.size() - 1) {
if (Graph.relativePreference(sortedVertices.get(i), sortedVertices.get(i + 1))
== Graph.NATURALLY_EQUAL) {
out += " - ";
} else if (Graph.relativePreference(sortedVertices.get(i), sortedVertices.get(i + 1))
== Graph.NATURALLY_DIRECTED) {
out += " >> ";
} else if (Graph.relativePreference(sortedVertices.get(i), sortedVertices.get(i + 1))
== Graph.ARTIFICIALLY_DIRECTED) {
out += " > ";
}
}
}
return out;
}
public DiscreteAttributeItem getItemAt(int indexOfItem) {
VertexCollection sortedVertices = values.topologicalSort();
return (DiscreteAttributeItem) sortedVertices.get(indexOfItem).getContent();
}
