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

Class CreateFunctionHandler

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.CreateFunctionHandler

public class CreateFunctionHandler
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 and Description
CreateFunctionHandler(SqlHandlerConfig config)

Method Summary

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

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 Detail

CreateFunctionHandler

public CreateFunctionHandler(SqlHandlerConfig config)

Method Detail

getPlan

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

Registers UDFs dynamically. Process consists of several steps:

1. Registering jar in jar registry to ensure that several jars with the same name is not registered.
2. Binary and source jars validation and back up.
3. Validation against local function registry.
4. Validation against remote function registry.
5. Remote function registry update.
6. Copying of jars to registry area and clean up.

UDFs registration is allowed only if dynamic UDFs support is enabled.

Overrides:

getPlan in class DefaultSqlHandler

Returns:

- Single row indicating list of registered UDFs, or error message otherwise.

Throws:

ForemanSetupException

IOException