Package org.apache.calcite.rel.rules
Class ProjectWindowTransposeRule
- java.lang.Object
-
- org.apache.calcite.plan.RelOptRule
-
- org.apache.calcite.rel.rules.ProjectWindowTransposeRule
-
public class ProjectWindowTransposeRule extends RelOptRule
Planner rule that pushes aLogicalProject
past aLogicalWindow
.
-
-
Field Summary
Fields Modifier and Type Field Description static ProjectWindowTransposeRule
INSTANCE
The default instance ofProjectWindowTransposeRule
.-
Fields inherited from class org.apache.calcite.plan.RelOptRule
description, operands, relBuilderFactory
-
-
Constructor Summary
Constructors Constructor Description ProjectWindowTransposeRule(RelBuilderFactory relBuilderFactory)
Creates ProjectWindowTransposeRule.
-
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description private ImmutableBitSet
findReference(LogicalProject project, LogicalWindow window)
private int
getAdjustedIndex(int initIndex, ImmutableBitSet beReferred, int windowInputColumn)
void
onMatch(RelOptRuleCall call)
Receives notification about a rule match.-
Methods inherited from class org.apache.calcite.plan.RelOptRule
any, convert, convert, convertList, convertOperand, convertOperand, equals, equals, getOperand, getOperands, getOutConvention, getOutTrait, hashCode, matches, none, operand, operand, operand, operand, operand, operandJ, operandJ, some, toString, unordered
-
-
-
-
Field Detail
-
INSTANCE
public static final ProjectWindowTransposeRule INSTANCE
The default instance ofProjectWindowTransposeRule
.
-
-
Constructor Detail
-
ProjectWindowTransposeRule
public ProjectWindowTransposeRule(RelBuilderFactory relBuilderFactory)
Creates ProjectWindowTransposeRule.- Parameters:
relBuilderFactory
- Builder for relational expressions
-
-
Method Detail
-
onMatch
public void onMatch(RelOptRuleCall call)
Description copied from class:RelOptRule
Receives notification about a rule match. At the time that this method is called,call.rels
holds the set of relational expressions which match the operands to the rule;call.rels[0]
is the root expression.Typically a rule would check that the nodes are valid matches, creates a new expression, then calls back
RelOptRuleCall.transformTo(org.apache.calcite.rel.RelNode, java.util.Map<org.apache.calcite.rel.RelNode, org.apache.calcite.rel.RelNode>)
to register the expression.- Specified by:
onMatch
in classRelOptRule
- Parameters:
call
- Rule call- See Also:
RelOptRule.matches(RelOptRuleCall)
-
findReference
private ImmutableBitSet findReference(LogicalProject project, LogicalWindow window)
-
getAdjustedIndex
private int getAdjustedIndex(int initIndex, ImmutableBitSet beReferred, int windowInputColumn)
-
-