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java.lang.Objectorg.apache.derby.impl.sql.compile.ReplaceAggregatesWithCRVisitor
Replace all aggregates with result columns.
Field Summary | |
private ResultColumnList |
rcl
|
private java.lang.Class |
skipOverClass
|
private int |
tableNumber
|
Constructor Summary | |
ReplaceAggregatesWithCRVisitor(ResultColumnList rcl,
java.lang.Class nodeToSkip)
Replace all aggregates with column references. |
|
ReplaceAggregatesWithCRVisitor(ResultColumnList rcl,
int tableNumber)
Replace all aggregates with column references. |
Method Summary | |
boolean |
skipChildren(Visitable node)
Don't visit childen under the skipOverClass node, if it isn't null. |
boolean |
stopTraversal()
Method that is called to see if query tree traversal should be stopped before visiting all nodes. |
Visitable |
visit(Visitable node)
Don't do anything unless we have an aggregate node. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
private ResultColumnList rcl
private java.lang.Class skipOverClass
private int tableNumber
Constructor Detail |
public ReplaceAggregatesWithCRVisitor(ResultColumnList rcl, int tableNumber)
rcl
- the result column listtableNumber
- The tableNumber for the new CRspublic ReplaceAggregatesWithCRVisitor(ResultColumnList rcl, java.lang.Class nodeToSkip)
rcl
- the result column listnodeToSkip
- don't examine anything below nodeToSkipMethod Detail |
public Visitable visit(Visitable node) throws StandardException
visit
in interface Visitor
node
- the node to process
StandardException
- on errorpublic boolean skipChildren(Visitable node)
skipChildren
in interface Visitor
node
- the node to process
public boolean stopTraversal()
Visitor
stopTraversal
in interface Visitor
|
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