/**
* Analye EQUALS (=) node.
*
* @param equalsNode - node to analyze
* @param queryGraph - store relationships between stream properties
*/
protected static void analyzeEqualsNode(
ExprEqualsNode equalsNode, QueryGraph queryGraph, boolean isOuterJoin) {
if ((equalsNode.getChildNodes()[0] instanceof ExprIdentNode)
&& (equalsNode.getChildNodes()[1] instanceof ExprIdentNode)) {
ExprIdentNode identNodeLeft = (ExprIdentNode) equalsNode.getChildNodes()[0];
ExprIdentNode identNodeRight = (ExprIdentNode) equalsNode.getChildNodes()[1];
if (identNodeLeft.getStreamId() != identNodeRight.getStreamId()) {
queryGraph.addStrictEquals(
identNodeLeft.getStreamId(),
identNodeLeft.getResolvedPropertyName(),
identNodeLeft,
identNodeRight.getStreamId(),
identNodeRight.getResolvedPropertyName(),
identNodeRight);
}
return;
}
if (isOuterJoin) { // outerjoins don't use constants or one-way expression-derived information
// to evaluate join
return;
}
// handle constant-compare or transformation case
int indexedStream = -1;
String indexedProp = null;
ExprNode exprNodeNoIdent = null;
if (equalsNode.getChildNodes()[0] instanceof ExprIdentNode) {
ExprIdentNode identNode = (ExprIdentNode) equalsNode.getChildNodes()[0];
indexedStream = identNode.getStreamId();
indexedProp = identNode.getResolvedPropertyName();
exprNodeNoIdent = equalsNode.getChildNodes()[1];
} else if (equalsNode.getChildNodes()[1] instanceof ExprIdentNode) {
ExprIdentNode identNode = (ExprIdentNode) equalsNode.getChildNodes()[1];
indexedStream = identNode.getStreamId();
indexedProp = identNode.getResolvedPropertyName();
exprNodeNoIdent = equalsNode.getChildNodes()[0];
}
if (indexedStream == -1) {
return; // require property of right/left side of equals
}
EligibilityDesc eligibility = EligibilityUtil.verifyInputStream(exprNodeNoIdent, indexedStream);
if (!eligibility.getEligibility().isEligible()) {
return;
}
if (eligibility.getEligibility() == Eligibility.REQUIRE_NONE) {
queryGraph.addUnkeyedExpression(indexedStream, indexedProp, exprNodeNoIdent);
} else {
queryGraph.addKeyedExpression(
indexedStream, indexedProp, eligibility.getStreamNum(), exprNodeNoIdent);
}
}
private static void analyzeRelationalOpNode(ExprRelationalOpNode relNode, QueryGraph queryGraph) {
if (((relNode.getChildNodes()[0] instanceof ExprIdentNode))
&& ((relNode.getChildNodes()[1] instanceof ExprIdentNode))) {
ExprIdentNode identNodeLeft = (ExprIdentNode) relNode.getChildNodes()[0];
ExprIdentNode identNodeRight = (ExprIdentNode) relNode.getChildNodes()[1];
if (identNodeLeft.getStreamId() != identNodeRight.getStreamId()) {
queryGraph.addRelationalOpStrict(
identNodeLeft.getStreamId(),
identNodeLeft.getResolvedPropertyName(),
identNodeLeft,
identNodeRight.getStreamId(),
identNodeRight.getResolvedPropertyName(),
identNodeRight,
relNode.getRelationalOpEnum());
}
return;
}
int indexedStream = -1;
String indexedProp = null;
ExprNode exprNodeNoIdent = null;
RelationalOpEnum relop = relNode.getRelationalOpEnum();
if (relNode.getChildNodes()[0] instanceof ExprIdentNode) {
ExprIdentNode identNode = (ExprIdentNode) relNode.getChildNodes()[0];
indexedStream = identNode.getStreamId();
indexedProp = identNode.getResolvedPropertyName();
exprNodeNoIdent = relNode.getChildNodes()[1];
} else if (relNode.getChildNodes()[1] instanceof ExprIdentNode) {
ExprIdentNode identNode = (ExprIdentNode) relNode.getChildNodes()[1];
indexedStream = identNode.getStreamId();
indexedProp = identNode.getResolvedPropertyName();
exprNodeNoIdent = relNode.getChildNodes()[0];
relop = relop.reversed();
}
if (indexedStream == -1) {
return; // require property of right/left side of equals
}
EligibilityDesc eligibility = EligibilityUtil.verifyInputStream(exprNodeNoIdent, indexedStream);
if (!eligibility.getEligibility().isEligible()) {
return;
}
queryGraph.addRelationalOp(
indexedStream, indexedProp, eligibility.getStreamNum(), exprNodeNoIdent, relop);
}
public void testAnalyze() throws Exception {
List<OuterJoinDesc> descList = new LinkedList<OuterJoinDesc>();
descList.add(
SupportOuterJoinDescFactory.makeDesc(
"intPrimitive", "s0", "intBoxed", "s1", OuterJoinType.LEFT));
descList.add(
SupportOuterJoinDescFactory.makeDesc(
"simpleProperty", "s2", "theString", "s1", OuterJoinType.LEFT));
// simpleProperty in s2
QueryGraph graph = new QueryGraph(3);
OuterJoinAnalyzer.analyze(descList, graph);
assertEquals(3, graph.getNumStreams());
assertTrue(graph.isNavigableAtAll(0, 1));
assertEquals(1, QueryGraphTestUtil.getStrictKeyProperties(graph, 0, 1).length);
assertEquals("intPrimitive", QueryGraphTestUtil.getStrictKeyProperties(graph, 0, 1)[0]);
assertEquals(1, QueryGraphTestUtil.getStrictKeyProperties(graph, 1, 0).length);
assertEquals("intBoxed", QueryGraphTestUtil.getStrictKeyProperties(graph, 1, 0)[0]);
assertTrue(graph.isNavigableAtAll(1, 2));
assertEquals("theString", QueryGraphTestUtil.getStrictKeyProperties(graph, 1, 2)[0]);
assertEquals("simpleProperty", QueryGraphTestUtil.getStrictKeyProperties(graph, 2, 1)[0]);
}
public TestAlgoCollector assertDistance(
AlgoHelperEntry algoEntry, List<QueryResult> queryList, OneRun oneRun) {
List<Path> altPaths = new ArrayList<Path>();
QueryGraph queryGraph = new QueryGraph(algoEntry.getQueryGraph());
queryGraph.lookup(queryList);
AlgorithmOptions opts = algoEntry.opts;
FlagEncoder encoder = opts.getFlagEncoder();
if (encoder.supports(TurnWeighting.class))
algoEntry.setAlgorithmOptions(
AlgorithmOptions.start(opts)
.weighting(
new TurnWeighting(
opts.getWeighting(),
opts.getFlagEncoder(),
(TurnCostExtension) queryGraph.getExtension()))
.build());
for (int i = 0; i < queryList.size() - 1; i++) {
RoutingAlgorithm algo = algoEntry.createAlgo(queryGraph);
Path path =
algo.calcPath(queryList.get(i).getClosestNode(), queryList.get(i + 1).getClosestNode());
// System.out.println(path.calcInstructions().createGPX("temp", 0, "GMT"));
altPaths.add(path);
}
PathMerger pathMerger =
new PathMerger().setCalcPoints(true).setSimplifyResponse(false).setEnableInstructions(true);
AltResponse rsp = new AltResponse();
pathMerger.doWork(rsp, altPaths, trMap.getWithFallBack(Locale.US));
if (rsp.hasErrors()) {
errors.add(
algoEntry
+ " response contains errors. Expected distance: "
+ rsp.getDistance()
+ ", expected points: "
+ oneRun
+ ". "
+ queryList
+ ", errors:"
+ rsp.getErrors());
return this;
}
PointList pointList = rsp.getPoints();
double tmpDist = pointList.calcDistance(distCalc);
if (Math.abs(rsp.getDistance() - tmpDist) > 2) {
errors.add(
algoEntry
+ " path.getDistance was "
+ rsp.getDistance()
+ "\t pointList.calcDistance was "
+ tmpDist
+ "\t (expected points "
+ oneRun.getLocs()
+ ", expected distance "
+ oneRun.getDistance()
+ ") "
+ queryList);
}
if (Math.abs(rsp.getDistance() - oneRun.getDistance()) > 2) {
errors.add(
algoEntry
+ " returns path not matching the expected distance of "
+ oneRun.getDistance()
+ "\t Returned was "
+ rsp.getDistance()
+ "\t (expected points "
+ oneRun.getLocs()
+ ", was "
+ pointList.getSize()
+ ") "
+ queryList);
}
// There are real world instances where A-B-C is identical to A-C (in meter precision).
if (Math.abs(pointList.getSize() - oneRun.getLocs()) > 1) {
errors.add(
algoEntry
+ " returns path not matching the expected points of "
+ oneRun.getLocs()
+ "\t Returned was "
+ pointList.getSize()
+ "\t (expected distance "
+ oneRun.getDistance()
+ ", was "
+ rsp.getDistance()
+ ") "
+ queryList);
}
return this;
}
