Package org.apache.calcite.adapter.pig

Class PigTableScan

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.core.TableScan

org.apache.calcite.adapter.pig.PigTableScan

All Implemented Interfaces:

java.lang.Cloneable, PigRel, RelOptNode, RelNode

public class PigTableScan
extends TableScan
implements PigRel

Implementation of TableScan in Pig calling convention.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.calcite.adapter.pig.PigRel

PigRel.Implementor

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

RelNode.Context

Field Summary

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

table

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

digest, id, rowType, traitSet

Fields inherited from interface org.apache.calcite.adapter.pig.PigRel

CONVENTION

Constructor Summary

Constructors

Constructor	Description
PigTableScan(RelOptCluster cluster, RelTraitSet traitSet, RelOptTable table)	Creates a PigTableScan.

Method Summary

Modifier and Type	Method	Description
private java.lang.String	getConcatenatedFieldNameAndTypeForPigSchema(PigRel.Implementor implementor, RelDataTypeField field)
private PigTable	getPigTable(java.lang.String name)
private java.lang.String	getSchemaForPigStatement(PigRel.Implementor implementor)
void	implement(PigRel.Implementor implementor)	Converts this node to a Pig Latin statement.
void	register(RelOptPlanner planner)	Registers any special rules specific to this kind of relational expression.

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

accept, computeSelfCost, deriveRowType, estimateRowCount, explainTerms, getCollationList, getTable, identity, identity, project

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

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

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

getCluster, getDescription, getDigest, getId, getTraitSet

Constructor Detail

PigTableScan

public PigTableScan(RelOptCluster cluster,
                    RelTraitSet traitSet,
                    RelOptTable table)

Creates a PigTableScan.

Method Detail

implement

public void implement(PigRel.Implementor implementor)

Description copied from interface: PigRel

Converts this node to a Pig Latin statement.

Specified by:

implement in interface PigRel

getPigTable

private PigTable getPigTable(java.lang.String name)

getSchemaForPigStatement

private java.lang.String getSchemaForPigStatement(PigRel.Implementor implementor)

getConcatenatedFieldNameAndTypeForPigSchema

private java.lang.String getConcatenatedFieldNameAndTypeForPigSchema(PigRel.Implementor implementor,
                                                                     RelDataTypeField field)

register

public void register(RelOptPlanner planner)

Description copied from interface: RelNode

Registers any special rules specific to this kind of relational expression.

The planner calls this method this first time that it sees a relational expression of this class. The derived class should call RelOptPlanner.addRule(org.apache.calcite.plan.RelOptRule) for each rule, and then call super.register.

Specified by:

register in interface RelNode

Overrides:

register in class AbstractRelNode

Parameters:

planner - Planner to be used to register additional relational expressions