JoinExtractFilterRule (Apache Calcite API)

java.lang.Object
- org.apache.calcite.plan.RelOptRule
- - org.apache.calcite.rel.rules.AbstractJoinExtractFilterRule
  - - org.apache.calcite.rel.rules.JoinExtractFilterRule

```
public final class JoinExtractFilterRule
extends AbstractJoinExtractFilterRule
```
Rule to convert an inner join to a filter on top of a cartesian inner join.
One benefit of this transformation is that after it, the join condition can be combined with conditions and expressions above the join. It also makes the FennelCartesianJoinRule applicable.
The constructor is parameterized to allow any sub-class of Join, not just LogicalJoin.

Field Summary

Fields
Modifier and Type Field Description

static JoinExtractFilterRule INSTANCE
The singleton.
- Fields inherited from class org.apache.calcite.plan.RelOptRule
  description, operands, relBuilderFactory

Constructor Summary

Constructors
Constructor	Description
`JoinExtractFilterRule(java.lang.Class<? extends Join> clazz, RelBuilderFactory relBuilderFactory)`	Creates a JoinExtractFilterRule.

Method Summary
- Methods inherited from class org.apache.calcite.rel.rules.AbstractJoinExtractFilterRule
  onMatch
- 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
- Methods inherited from class java.lang.Object
  clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

INSTANCE

public static final JoinExtractFilterRule INSTANCE

The singleton.

Constructor Detail

JoinExtractFilterRule

public JoinExtractFilterRule(java.lang.Class<? extends Join> clazz,
                             RelBuilderFactory relBuilderFactory)

Creates a JoinExtractFilterRule.