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

Class DropTableHandler

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.DropTableHandler

public class DropTableHandler
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
DropTableHandler(SqlHandlerConfig config)

Method Summary

Modifier and Type	Method	Description
PhysicalPlan	getPlan(org.apache.calcite.sql.SqlNode sqlNode)	Function resolves the schema and invokes the drop method (while IF EXISTS statement is used function invokes the drop method only if table exists).

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

addRenamedProject, convertToDrel, convertToPlan, convertToPop, convertToPrel, convertToRawDrel, getPops, log, log, log, logAndSetTextPlan, rewrite, 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

DropTableHandler

public DropTableHandler(SqlHandlerConfig config)

Method Details

getPlan

public PhysicalPlan getPlan(org.apache.calcite.sql.SqlNode sqlNode)

Function resolves the schema and invokes the drop method (while IF EXISTS statement is used function invokes the drop method only if table exists). Raises an exception if the schema is immutable.

Overrides:

getPlan in class DefaultSqlHandler

Parameters:

sqlNode - - SqlDropTable (SQL parse tree of drop table [if exists] query)

Returns:

- Single row indicating drop succeeded or table is not found while IF EXISTS statement is used, raise exception otherwise