private RelationalNode correctProjectionInternalTables(PlanNode node, AccessNode aNode)
throws QueryMetadataException, TeiidComponentException {
if (node.getGroups().size() != 1) {
return aNode;
}
GroupSymbol group = node.getGroups().iterator().next();
if (!CoreConstants.SYSTEM_MODEL.equals(
metadata.getFullName(metadata.getModelID(group.getMetadataID())))
&& !CoreConstants.SYSTEM_ADMIN_MODEL.equals(
metadata.getFullName(metadata.getModelID(group.getMetadataID())))) {
return aNode;
}
List projectSymbols = (List) node.getProperty(NodeConstants.Info.OUTPUT_COLS);
List<ElementSymbol> acutalColumns = ResolverUtil.resolveElementsInGroup(group, metadata);
if (projectSymbols.equals(acutalColumns)) {
return aNode;
}
node.setProperty(NodeConstants.Info.OUTPUT_COLS, acutalColumns);
if (node.getParent() != null && node.getParent().getType() == NodeConstants.Types.PROJECT) {
// if the parent is already a project, just correcting the output cols is enough
return aNode;
}
ProjectNode pnode = new ProjectNode(getID());
pnode.setSelectSymbols(projectSymbols);
aNode = (AccessNode) prepareToAdd(node, aNode);
node.setProperty(NodeConstants.Info.OUTPUT_COLS, projectSymbols);
pnode.addChild(aNode);
return pnode;
}
private void updateGroupName(PlanNode node, TableFunctionReference tt) {
String groupName = node.getGroups().iterator().next().getName();
tt.getGroupSymbol().setName(groupName);
for (ElementSymbol symbol : tt.getProjectedSymbols()) {
symbol.setGroupSymbol(new GroupSymbol(groupName));
}
}
/**
* Mark the specified access node to be made dependent
*
* @param sourceNode Node to make dependent
* @param dca
* @throws TeiidComponentException
* @throws QueryMetadataException
*/
boolean markDependent(
PlanNode sourceNode,
PlanNode joinNode,
QueryMetadataInterface metadata,
DependentCostAnalysis dca,
Boolean bound)
throws QueryMetadataException, TeiidComponentException {
boolean isLeft = joinNode.getFirstChild() == sourceNode;
// Get new access join node properties based on join criteria
List independentExpressions =
(List)
(isLeft
? joinNode.getProperty(NodeConstants.Info.RIGHT_EXPRESSIONS)
: joinNode.getProperty(NodeConstants.Info.LEFT_EXPRESSIONS));
List dependentExpressions =
(List)
(isLeft
? joinNode.getProperty(NodeConstants.Info.LEFT_EXPRESSIONS)
: joinNode.getProperty(NodeConstants.Info.RIGHT_EXPRESSIONS));
if (independentExpressions == null || independentExpressions.isEmpty()) {
return false;
}
String id = "$dsc/id" + ID.getAndIncrement(); // $NON-NLS-1$
// Create DependentValueSource and set on the independent side as this will feed the values
joinNode.setProperty(NodeConstants.Info.DEPENDENT_VALUE_SOURCE, id);
PlanNode indNode = isLeft ? joinNode.getLastChild() : joinNode.getFirstChild();
if (bound == null) {
List<PlanNode> sources = NodeEditor.findAllNodes(indNode, NodeConstants.Types.SOURCE);
for (PlanNode planNode : sources) {
for (GroupSymbol gs : planNode.getGroups()) {
if (gs.isTempTable()
&& metadata.getCardinality(gs.getMetadataID())
== QueryMetadataInterface.UNKNOWN_CARDINALITY) {
bound = true;
break;
}
}
}
if (bound == null) {
bound = false;
}
}
PlanNode crit =
getDependentCriteriaNode(
id,
independentExpressions,
dependentExpressions,
indNode,
metadata,
dca,
bound,
(MakeDep) sourceNode.getProperty(Info.MAKE_DEP));
sourceNode.addAsParent(crit);
if (isLeft) {
JoinUtil.swapJoinChildren(joinNode);
}
return true;
}
