Package org.apache.calcite.rel.rules
Class CoerceInputsRule
java.lang.Object
org.apache.calcite.plan.RelOptRule
org.apache.calcite.plan.RelRule<CoerceInputsRule.Config>
org.apache.calcite.rel.rules.CoerceInputsRule
- All Implemented Interfaces:
TransformationRule
@Enclosing
public class CoerceInputsRule
extends RelRule<CoerceInputsRule.Config>
implements TransformationRule
CoerceInputsRule pre-casts inputs to a particular type. This can be used to
assist operator implementations which impose requirements on their input
types.
- See Also:
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Nested Class Summary
Nested ClassesNested classes/interfaces inherited from class org.apache.calcite.plan.RelRule
RelRule.Done, RelRule.MatchHandler<R extends RelOptRule>, RelRule.OperandBuilder, RelRule.OperandDetailBuilder<R extends RelNode>, RelRule.OperandTransform
Nested classes/interfaces inherited from class org.apache.calcite.plan.RelOptRule
RelOptRule.ConverterRelOptRuleOperand
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Field Summary
Fields inherited from class org.apache.calcite.plan.RelOptRule
description, operands, relBuilderFactory
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Constructor Summary
ConstructorsModifierConstructorDescriptionCoerceInputsRule
(Class<? extends RelNode> consumerRelClass, boolean coerceNames) Deprecated.CoerceInputsRule
(Class<? extends RelNode> consumerRelClass, boolean coerceNames, RelBuilderFactory relBuilderFactory) Deprecated.protected
Creates a CoerceInputsRule. -
Method Summary
Modifier and TypeMethodDescription@Nullable Convention
Returns the convention of the result of firing this rule, null if not known.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, getOutTrait, hashCode, matches, none, operand, operand, operand, operand, operand, operandJ, operandJ, some, toString, unordered
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Constructor Details
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CoerceInputsRule
Creates a CoerceInputsRule. -
CoerceInputsRule
Deprecated. -
CoerceInputsRule
@Deprecated public CoerceInputsRule(Class<? extends RelNode> consumerRelClass, boolean coerceNames, RelBuilderFactory relBuilderFactory) Deprecated.
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Method Details
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getOutConvention
Description copied from class:RelOptRule
Returns the convention of the result of firing this rule, null if not known.- Overrides:
getOutConvention
in classRelOptRule
- Returns:
- Convention of the result of firing this rule, null if not known
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onMatch
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>, org.apache.calcite.plan.RelHintsPropagator)
to register the expression.- Specified by:
onMatch
in classRelOptRule
- Parameters:
call
- Rule call- See Also:
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