public class FilterMultiJoinMergeRule extends RelOptRule
ProjectMultiJoinMergeRule
Modifier and Type | Field and Description |
---|---|
static FilterMultiJoinMergeRule |
INSTANCE |
description, operands, relBuilderFactory
Constructor and Description |
---|
FilterMultiJoinMergeRule(java.lang.Class<? extends Filter> filterClass,
RelBuilderFactory relBuilderFactory)
Creates a FilterMultiJoinMergeRule that uses a generic
Filter |
FilterMultiJoinMergeRule(RelBuilderFactory relBuilderFactory)
Creates a FilterMultiJoinMergeRule that uses
Filter
of type LogicalFilter |
Modifier and Type | Method and Description |
---|---|
void |
onMatch(RelOptRuleCall call)
Receives notification about a rule match.
|
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
public static final FilterMultiJoinMergeRule INSTANCE
public FilterMultiJoinMergeRule(RelBuilderFactory relBuilderFactory)
Filter
of type LogicalFilter
relBuilderFactory
- builder factory for relational expressionspublic FilterMultiJoinMergeRule(java.lang.Class<? extends Filter> filterClass, RelBuilderFactory relBuilderFactory)
Filter
filterClass
- filter classrelBuilderFactory
- builder factory for relational expressionspublic void onMatch(RelOptRuleCall call)
RelOptRule
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.
onMatch
in class RelOptRule
call
- Rule callRelOptRule.matches(RelOptRuleCall)
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