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

Class ShowSchemasHandler

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.ShowSchemasHandler

public class ShowSchemasHandler
extends DefaultSqlHandler

Nested Class Summary

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
ShowSchemasHandler(SqlHandlerConfig config)

Method Summary

Modifier and Type	Method	Description
org.apache.calcite.sql.SqlNode	rewrite(org.apache.calcite.sql.SqlNode sqlNode)	Rewrite the parse tree as SELECT ...

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

addRenamedProject, convertToDrel, convertToPlan, convertToPop, convertToPrel, convertToRawDrel, getPlan, 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

ShowSchemasHandler

public ShowSchemasHandler(SqlHandlerConfig config)

Method Details

rewrite

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

Rewrite the parse tree as SELECT ... FROM INFORMATION_SCHEMA.SCHEMATA ...

Overrides:

rewrite in class DefaultSqlHandler

Parameters:

sqlNode - sql parse tree to be rewritten

Returns:

Rewritten sql parse tree

Throws:

ForemanSetupException