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

Method Summary

Methods

Modifier and Type	Method and Description
PhysicalPlan	getPlan(org.apache.calcite.sql.SqlNode sqlNode)
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

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 Detail

ExplainHandler

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

Method Detail

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

Returns:

Rewritten sql parse tree

Throws:

org.apache.calcite.tools.RelConversionException

ForemanSetupException