Package org.apache.drill.exec.planner.sql.handlers

Class ExplainHandler

java.lang.Object

org.apache.drill.exec.planner.sql.handlers.AbstractSqlHandler

org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler

org.apache.drill.exec.planner.sql.handlers.ExplainHandler

public class ExplainHandler
extends DefaultSqlHandler

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ExplainHandler.LogicalExplain
static class	ExplainHandler.PhysicalExplain

Nested classes/interfaces inherited from class org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler

DefaultSqlHandler.ConvertedRelNode, DefaultSqlHandler.MetaDataProviderModifier

Field Summary

Fields inherited from class org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler

config, context

Constructor Summary

Constructors

Constructor	Description
ExplainHandler(SqlHandlerConfig config, Pointer<String> textPlan)

Method Summary

Modifier and Type	Method	Description
PhysicalPlan	getPlan(org.apache.calcite.sql.SqlNode sqlNode)
static void	printPlan(org.apache.calcite.rel.RelNode node)
static void	printPlan(Prel node, QueryContext context)
org.apache.calcite.sql.SqlNode	rewrite(org.apache.calcite.sql.SqlNode sqlNode)	Rewrite the parse tree.

Methods inherited from class org.apache.drill.exec.planner.sql.handlers.DefaultSqlHandler

addRenamedProject, convertToDrel, convertToPlan, convertToPop, convertToPrel, convertToRawDrel, getPops, log, log, log, logAndSetTextPlan, transform, transform, validateAndConvert, validateNode

Methods inherited from class org.apache.drill.exec.planner.sql.handlers.AbstractSqlHandler

unwrap

Methods inherited from class java.lang.Object

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

Constructor Details

ExplainHandler

public ExplainHandler(SqlHandlerConfig config,
 Pointer<String> textPlan)

Method Details

getPlan

public PhysicalPlan getPlan(org.apache.calcite.sql.SqlNode sqlNode)
                     throws org.apache.calcite.tools.ValidationException,
org.apache.calcite.tools.RelConversionException,
IOException,
ForemanSetupException

Overrides:

getPlan in class DefaultSqlHandler

Throws:

org.apache.calcite.tools.ValidationException

org.apache.calcite.tools.RelConversionException

IOException

ForemanSetupException

rewrite

public org.apache.calcite.sql.SqlNode rewrite(org.apache.calcite.sql.SqlNode sqlNode)
                                       throws org.apache.calcite.tools.RelConversionException,
ForemanSetupException

Description copied from class: DefaultSqlHandler

Rewrite the parse tree. Used before validating the parse tree. Useful if a particular statement needs to converted into another statement.

Overrides:

rewrite in class DefaultSqlHandler

Parameters:

sqlNode - sql parse tree to be rewritten

Returns:

Rewritten sql parse tree

Throws:

org.apache.calcite.tools.RelConversionException

ForemanSetupException

printPlan

public static void printPlan(Prel node,
 QueryContext context)

printPlan

public static void printPlan(org.apache.calcite.rel.RelNode node)