Function QueryGraph_Clone

src/graph/query_graph.c:538–565

}

QueryGraph *QueryGraph_Clone
(
	const QueryGraph *qg
) {
	uint        node_count  =  QueryGraph_NodeCount(qg);
	uint        edge_count  =  QueryGraph_EdgeCount(qg);
	QueryGraph  *clone      =  QueryGraph_New(node_count, edge_count);

	// clone nodes
	for(uint i = 0; i < node_count; i++) {
		// clones node without its edges
		QGNode *n = QGNode_Clone(qg->nodes[i]);
		QueryGraph_AddNode(clone, n);
	}

	// clone edges
	for(uint i = 0; i < edge_count; i++) {
		QGEdge  *e     =  qg->edges[i];
		QGNode  *src   =  QueryGraph_GetNodeByAlias(clone, e->src->alias);
		QGNode  *dest  =  QueryGraph_GetNodeByAlias(clone, e->dest->alias);
		ASSERT(src != NULL && dest != NULL);

		QGEdge *clone_edge = QGEdge_Clone(e);
		QueryGraph_ConnectNodes(clone, src, dest, clone_edge);
	}

	return clone;
}

QGNode *QueryGraph_RemoveNode
(