org.apache.calcite.adapter.cassandra

Class CassandraLimit

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.SingleRel

org.apache.calcite.adapter.cassandra.CassandraLimit

All Implemented Interfaces:

Cloneable, CassandraRel, RelOptNode, RelNode

public class CassandraLimit
extends SingleRel
implements CassandraRel

Implementation of limits in Cassandra.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.calcite.adapter.cassandra.CassandraRel

CassandraRel.Implementor

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

RelNode.Context

Field Summary

Fields

Modifier and Type	Field and Description
RexNode	fetch
RexNode	offset

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

input

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

digest, id, rowType, traitSet

Fields inherited from interface org.apache.calcite.adapter.cassandra.CassandraRel

CONVENTION

Constructor Summary

Constructors

Constructor and Description
CassandraLimit(RelOptCluster cluster, RelTraitSet traitSet, RelNode input, RexNode offset, RexNode fetch)

Method Summary

Modifier and Type	Method and Description
RelOptCost	computeSelfCost(RelOptPlanner planner, RelMetadataQuery mq)
CassandraLimit	copy(RelTraitSet traitSet, List<RelNode> newInputs)
RelWriter	explainTerms(RelWriter pw)
void	implement(CassandraRel.Implementor implementor)

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

childrenAccept, deriveRowType, estimateRowCount, getInput, getInputs, replaceInput

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

accept, accept, collectVariablesSet, collectVariablesUsed, computeDigest, computeSelfCost, explain, getChildExps, getCluster, getCollationList, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getQuery, getRelTypeName, getRows, getRowType, getTable, getTraitSet, getVariablesSet, getVariablesStopped, isDistinct, isKey, isValid, 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, computeSelfCost, estimateRowCount, explain, getChildExps, getCollationList, getConvention, getCorrelVariable, getExpectedInputRowType, getInput, getInputs, getQuery, getRelTypeName, getRows, getRowType, getTable, getVariablesSet, getVariablesStopped, isDistinct, isKey, isValid, isValid, metadata, onRegister, recomputeDigest, register, replaceInput

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

getCluster, getDescription, getDigest, getId, getTraitSet

Field Detail

offset

public final RexNode offset

fetch

public final RexNode fetch

Constructor Detail

CassandraLimit

public CassandraLimit(RelOptCluster cluster,
                      RelTraitSet traitSet,
                      RelNode input,
                      RexNode offset,
                      RexNode fetch)

Method Detail

computeSelfCost

public RelOptCost computeSelfCost(RelOptPlanner planner,
                                  RelMetadataQuery mq)

Specified by:

computeSelfCost in interface RelNode

Overrides:

computeSelfCost in class AbstractRelNode

copy

public CassandraLimit copy(RelTraitSet traitSet,
                           List<RelNode> newInputs)

Specified by:

copy in interface RelNode

Overrides:

copy in class AbstractRelNode

implement

public void implement(CassandraRel.Implementor implementor)

Specified by:

implement in interface CassandraRel

explainTerms

public RelWriter explainTerms(RelWriter pw)

Overrides:

explainTerms in class SingleRel