wonook commented on a change in pull request #215: [NEMO-373] Optimize with DAG
Patterns
URL: https://github.com/apache/incubator-nemo/pull/215#discussion_r279640833
##########
File path:
compiler/optimizer/src/main/java/org/apache/nemo/compiler/optimizer/OptimizerUtils.java
##########
@@ -36,28 +46,72 @@ private OptimizerUtils() {
}
/**
- * Restore the formatted string into a pair of vertex/edge id and the
execution property.
+ * Restore the formatted string into a pair of vertex/edge list and the
execution property.
*
* @param string the formatted string.
- * @return a pair of vertex/edge id and the execution property key index.
+ * @param dag the IR DAG to observe.
+ * @return a pair of vertex/edge list and the execution property key index.
*/
- public static Pair<String, Integer> stringToIdAndEPKeyIndex(final String
string) {
- // Formatted into 9 digits: 0:vertex/edge 1-5:ID 5-9:EP Index.
+ public static Pair<List<Object>, Integer> stringToObjAndEPKeyIndex(final
String string, final IRDAG dag) {
+ // Formatted into 9 digits: 0:vertex/edge 1-4:ID 5-8:EP Index.
if (string.length() != 9) {
throw new InvalidParameterException("The metric data should follow the
format of "
+ "[0]: index indicating vertex/edge, [1-4]: id of the component, and
[5-8]: EP Key index. Current: " + string);
}
final Integer idx = Integer.parseInt(string.substring(0, 1));
final Integer numericId = Integer.parseInt(string.substring(1, 5));
- final String id;
+ final List<Object> objectList = new ArrayList<>();
if (idx == 1) {
- id = Util.restoreVertexId(numericId);
+ final String id = Util.restoreVertexId(numericId);
+ objectList.add(dag.getVertexById(id));
} else if (idx == 2) {
- id = Util.restoreEdgeId(numericId);
+ final String id = Util.restoreEdgeId(numericId);
+ objectList.add(dag.getEdgeById(id));
} else {
throw new UnsupportedMethodException("The index " + idx + " cannot be
categorized into a vertex or an edge");
}
- return Pair.of(id, Integer.parseInt(string.substring(5, 9)));
+ return Pair.of(objectList, Integer.parseInt(string.substring(5, 9)));
+ }
+
+ /**
+ * Restore the formatted string into a pair of vertex/edge list and the
execution property index.
+ *
+ * @param string the formatted string, for patterns.
+ * @param dag the IR DAG to observe.
+ * @return a pair of vertex/edge list and the execution property key index.
+ */
+ public static Pair<List<Object>, Integer>
patternStringToObjAndEPKeyIndex(final String string, final IRDAG dag) {
+ // Formatted into 10 digits: 0:vertex/edge 1-3: patternID 4-5: vertex/edge
6-9:EP Index.
+ final Integer idx = Integer.parseInt(string.substring(0, 1));
+ if (string.length() != 10 || idx != 1) {
+ throw new InvalidParameterException("The metric data should follow the
format of "
+ + "[0]: index indicating vertex/edge, [1-3]: id of the pattern, [4-5]:
vertex/edge, "
+ + "and [6-9]: EP Key index. Current: " + string);
+ }
+ final IRDAG subDAG =
MetricUtils.getSubDAGFromIndex(Integer.parseInt(string.substring(1, 4)));
+ final IRVertex targetVertex =
subDAG.getTopologicalSort().get(subDAG.getVertices().size() - 1);
+ if (subDAG.getEdges().stream().anyMatch(e ->
e.getSrc().equals(targetVertex))) {
+ throw new MetricException(targetVertex.getId() + " is not the target
vertex");
+ }
+
+ final Stream<IRVertex> targetVertexFromDAG = dag.getVertices().stream()
+ .filter(v -> v.toString().equals(targetVertex.toString()))
Review comment:
Actually, thinking about it, `instanceof` does not check if both classes
have the same transform for OperatorVertices or the same source for
SourceVertices. That's why I've gone for the toString methods. I could make the
code a bit more complex and compare the transform/source classes if you think
that it makes it simpler. What do you think?
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