org.apache.calcite.adapter.jdbc

Class JdbcRules.JdbcUnion

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.core.SetOp

org.apache.calcite.rel.core.Union

org.apache.calcite.adapter.jdbc.JdbcRules.JdbcUnion

All Implemented Interfaces:

Cloneable, JdbcRel, RelOptNode, Hintable, RelNode

Enclosing class:

JdbcRules

public static class JdbcRules.JdbcUnion
extends Union
implements JdbcRel

Union operator implemented in JDBC convention.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.calcite.rel.RelNode

RelNode.Context

Field Summary

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

all, hints, inputs, kind

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

digest, id, rowType, traitSet

Constructor Summary

Constructors

Constructor and Description
JdbcUnion(RelOptCluster cluster, RelTraitSet traitSet, List<RelNode> inputs, boolean all)

Method Summary

Modifier and Type	Method and Description
@Nullable RelOptCost	computeSelfCost(RelOptPlanner planner, RelMetadataQuery mq) Returns the cost of this plan (not including children).
JdbcRules.JdbcUnion	copy(RelTraitSet traitSet, List<RelNode> inputs, boolean all)
SqlImplementor.Result	implement(JdbcImplementor implementor)

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

estimateRowCount, estimateRowCount

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

copy, deriveRowType, explainTerms, getHints, getInputs, isHomogeneous, replaceInput

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

accept, accept, childrenAccept, collectVariablesSet, collectVariablesUsed, deepEquals, deepHashCode, equals, explain, getCluster, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getRelDigest, getRelTypeName, getRowType, getTable, getTraitSet, getVariablesSet, hashCode, isEnforcer, isValid, metadata, onRegister, recomputeDigest, register, sole, toString

Methods inherited from class java.lang.Object

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

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

accept, accept, childrenAccept, collectVariablesSet, collectVariablesUsed, copy, deepEquals, deepHashCode, estimateRowCount, explain, explain, fieldIsNullable, getConvention, getCorrelVariable, getDigest, getExpectedInputRowType, getInput, getInputs, getRelDigest, getRelTypeName, getRowType, getTable, getVariablesSet, isEnforcer, isValid, metadata, onRegister, recomputeDigest, register, replaceInput

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

getCluster, getDescription, getId, getTraitSet

Methods inherited from interface org.apache.calcite.rel.hint.Hintable

attachHints, withHints

Constructor Detail

JdbcUnion

public JdbcUnion(RelOptCluster cluster,
                 RelTraitSet traitSet,
                 List<RelNode> inputs,
                 boolean all)

Method Detail

copy

public JdbcRules.JdbcUnion copy(RelTraitSet traitSet,
                                List<RelNode> inputs,
                                boolean all)

Specified by:

copy in class SetOp

computeSelfCost

public @Nullable RelOptCost computeSelfCost(RelOptPlanner planner,
                                            RelMetadataQuery mq)

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 AbstractRelNode

Parameters:

planner - Planner for cost calculation

mq - Metadata query

Returns:

Cost of this plan (not including children)

implement

public SqlImplementor.Result implement(JdbcImplementor implementor)

Specified by:

implement in interface JdbcRel