org.apache.calcite.adapter.jdbc

Class JdbcRules.JdbcJoin

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.BiRel

org.apache.calcite.rel.core.Join

org.apache.calcite.adapter.jdbc.JdbcRules.JdbcJoin

All Implemented Interfaces:

Cloneable, JdbcRel, RelOptNode, RelNode

Enclosing class:

JdbcRules

public static class JdbcRules.JdbcJoin
extends Join
implements JdbcRel

Join operator implemented in JDBC convention.

Field Summary

Fields inherited from class org.apache.calcite.rel.core.Join

condition, joinType, variablesStopped

Fields inherited from class org.apache.calcite.rel.BiRel

left, right

Fields inherited from class org.apache.calcite.rel.AbstractRelNode

digest, id, rowType, traitSet

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	JdbcRules.JdbcJoin(RelOptCluster cluster, RelTraitSet traitSet, RelNode left, RelNode right, RexNode condition, JoinRelType joinType, Set<String> variablesStopped)

Method Summary

Methods

Modifier and Type	Method and Description
RelOptCost	computeSelfCost(RelOptPlanner planner) Returns the cost of this plan (not including children).
JdbcRules.JdbcJoin	copy(RelTraitSet traitSet, RexNode condition, RelNode left, RelNode right, JoinRelType joinType, boolean semiJoinDone) Creates a copy of this join, overriding condition, system fields and inputs.
double	getRows() Returns an estimate of the number of rows this relational expression will return.
JdbcImplementor.Result	implement(JdbcImplementor implementor)

Methods inherited from class org.apache.calcite.rel.core.Join

accept, analyzeCondition, copy, createJoinType, deriveJoinRowType, deriveRowType, estimateJoinedRows, explainTerms, getChildExps, getCondition, getJoinType, getSystemFieldList, getVariablesStopped, isSemiJoinDone, isValid_

Methods inherited from class org.apache.calcite.rel.BiRel

childrenAccept, getInputs, getLeft, getRight, replaceInput

Methods inherited from class org.apache.calcite.rel.AbstractRelNode

accept, collectVariablesSet, collectVariablesUsed, computeDigest, explain, getCluster, getCollationList, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getQuery, getRelTypeName, getRowType, getTable, getTraitSet, isDistinct, isKey, isValid, metadata, onRegister, recomputeDigest, register, sole, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.calcite.rel.RelNode

accept, accept, childrenAccept, collectVariablesSet, collectVariablesUsed, copy, explain, getChildExps, getCollationList, getConvention, getCorrelVariable, getExpectedInputRowType, getInput, getInputs, getQuery, getRelTypeName, getRowType, getTable, getVariablesStopped, isDistinct, isKey, isValid, metadata, onRegister, recomputeDigest, register, replaceInput

Methods inherited from interface org.apache.calcite.plan.RelOptNode

getCluster, getDescription, getDigest, getId, getTraitSet

Constructor Detail

JdbcRules.JdbcJoin

protected JdbcRules.JdbcJoin(RelOptCluster cluster,
                  RelTraitSet traitSet,
                  RelNode left,
                  RelNode right,
                  RexNode condition,
                  JoinRelType joinType,
                  Set<String> variablesStopped)
                      throws InvalidRelException

Throws:

InvalidRelException

Method Detail

copy

public JdbcRules.JdbcJoin copy(RelTraitSet traitSet,
                      RexNode condition,
                      RelNode left,
                      RelNode right,
                      JoinRelType joinType,
                      boolean semiJoinDone)

Description copied from class: Join

Creates a copy of this join, overriding condition, system fields and inputs.

General contract as RelNode.copy(org.apache.calcite.plan.RelTraitSet, java.util.List<org.apache.calcite.rel.RelNode>).

Specified by:

copy in class Join

Parameters:

traitSet - Traits

condition - Condition

left - Left input

right - Right input

joinType - Join type

semiJoinDone - Whether this join has been translated to a semi-join

Returns:

Copy of this join

computeSelfCost

public RelOptCost computeSelfCost(RelOptPlanner planner)

Description copied from interface: RelNode

Returns the cost of this plan (not including children). The base implementation throws an error; derived classes should override.

NOTE jvs 29-Mar-2006: Don't call this method directly. Instead, use RelMetadataQuery.getNonCumulativeCost(org.apache.calcite.rel.RelNode), which gives plugins a chance to override the rel's default ideas about cost.

Specified by:

computeSelfCost in interface RelNode

Overrides:

computeSelfCost in class Join

Parameters:

planner - Planner for cost calculation

Returns:

Cost of this plan (not including children)

getRows

public double getRows()

Description copied from interface: RelNode

Returns an estimate of the number of rows this relational expression will return.

NOTE jvs 29-Mar-2006: Don't call this method directly. Instead, use RelMetadataQuery.getRowCount(org.apache.calcite.rel.RelNode), which gives plugins a chance to override the rel's default ideas about row count.

Specified by:

getRows in interface RelNode

Overrides:

getRows in class Join

Returns:

Estimate of the number of rows this relational expression will return

implement

public JdbcImplementor.Result implement(JdbcImplementor implementor)

Specified by:

implement in interface JdbcRel