net.sf.farrago.fennel.rel
Class FennelInsertRenameRule

java.lang.Object
  org.eigenbase.relopt.RelOptRule
      net.sf.farrago.fennel.rel.FennelRenameRule
          net.sf.farrago.fennel.rel.FennelInsertRenameRule

public class FennelInsertRenameRule
extends FennelRenameRule

FennelInsertRenameRule is a rule for converting a rename-only Project underneath an insert TableModificationRel into FennelRename.

Version:

$Id: //open/dev/farrago/src/net/sf/farrago/fennel/rel/FennelInsertRenameRule.java#3 $

Author:

Zelaine Fong

Field Summary

static FennelInsertRenameRule

instance

Fields inherited from class org.eigenbase.relopt.RelOptRule

ANY, description, operands

Constructor Summary

private

FennelInsertRenameRule() Creates a FennelInsertRenameRule.

Method Summary

void	onMatch(RelOptRuleCall call) Receives notification about a rule match.

Methods inherited from class net.sf.farrago.fennel.rel.FennelRenameRule

getOutConvention, renameChild

Methods inherited from class org.eigenbase.relopt.RelOptRule

convert, equals, equals, getOperand, getOperands, getOutTrait, hashCode, matches, mergeTraitsAndConvert, mergeTraitsAndConvert, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

instance

public static final FennelInsertRenameRule instance

Constructor Detail

FennelInsertRenameRule

private FennelInsertRenameRule()

Creates a FennelInsertRenameRule.

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.eigenbase.rel.RelNode) to register the expression.

Overrides:

onMatch in class FennelRenameRule

Parameters:

call - Rule call

See Also:

RelOptRule.matches(RelOptRuleCall)