/**
* Create the graph used to hold the deductions. Can be overridden by subclasses that need special
* purpose graph implementations here. Assumes the graph underlying fdeductions and associated
* SafeGraph wrapper can be reused if present thus enabling preservation of listeners.
*/
protected Graph createDeductionsGraph() {
if (fdeductions != null) {
Graph dg = fdeductions.getGraph();
if (dg != null) {
// Reuse the old graph in order to preserve any listeners
safeDeductions.clear();
return dg;
}
}
Graph dg = Factory.createGraphMem();
safeDeductions = new SafeGraph(dg);
return dg;
}
