Package org.apache.calcite.piglet

Class PigRelToSqlConverter

java.lang.Object

org.apache.calcite.rel.rel2sql.SqlImplementor

org.apache.calcite.rel.rel2sql.RelToSqlConverter

org.apache.calcite.piglet.PigRelToSqlConverter

All Implemented Interfaces:

ReflectiveVisitor

public class PigRelToSqlConverter
extends RelToSqlConverter

An extension of RelToSqlConverter to convert a relation algebra tree, translated from a Pig script, into a SQL statement.

The input relational algebra tree can be optimized by the planner for Pig to RelNode.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.calcite.rel.rel2sql.SqlImplementor

SqlImplementor.AliasContext, SqlImplementor.BaseContext, SqlImplementor.Builder, SqlImplementor.Clause, SqlImplementor.Context, SqlImplementor.MatchRecognizeContext, SqlImplementor.Result, SqlImplementor.SimpleContext

Field Summary

Fields inherited from class org.apache.calcite.rel.rel2sql.SqlImplementor

aliasSet, correlTableMap, dialect, POS

Method Summary

Modifier and Type	Method	Description
SqlImplementor.Result	visit(Aggregate e)	Visits an Aggregate; called by RelToSqlConverter.dispatch(org.apache.calcite.rel.RelNode) via reflection.
SqlImplementor.Result	visit(Window e)	Visits a Window; called by RelToSqlConverter.dispatch(org.apache.calcite.rel.RelNode) via reflection.

Methods inherited from class org.apache.calcite.rel.rel2sql.RelToSqlConverter

addSelect, buildAggGroupList, buildAggregate, createAsFullOperands, dispatch, hasTrickyRollup, isAnon, result, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visitAntiOrSemiJoin, visitInput

Methods inherited from class org.apache.calcite.rel.rel2sql.SqlImplementor

aliasContext, as, convertConditionToSqlNode, isStar, isStar, joinContext, joinType, matchRecognizeContext, result, result, setOpToSql, tableFunctionScanContext, toSql, toSql, visitChild, visitInput, visitInput, visitInput, visitRoot

Methods inherited from class java.lang.Object

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

Method Details

visit

public SqlImplementor.Result visit(Aggregate e)

Description copied from class: RelToSqlConverter

Visits an Aggregate; called by RelToSqlConverter.dispatch(org.apache.calcite.rel.RelNode) via reflection.

Overrides:

visit in class RelToSqlConverter

visit

public SqlImplementor.Result visit(Window e)

Description copied from class: RelToSqlConverter

Visits a Window; called by RelToSqlConverter.dispatch(org.apache.calcite.rel.RelNode) via reflection.

Overrides:

visit in class RelToSqlConverter

See Also:

• RelToSqlConverter.dispatch(org.apache.calcite.rel.RelNode)