Package org.apache.flink.table.planner.operations.converters

Class AbstractSqlShowConverter<T extends SqlShowCall>

java.lang.Object

org.apache.flink.table.planner.operations.converters.AbstractSqlShowConverter<T>

All Implemented Interfaces:

SqlNodeConverter<T>

Direct Known Subclasses:

SqlShowFunctionsConverter, SqlShowProcedureConverter, SqlShowTablesConverter, SqlShowViewsConverter

public abstract class AbstractSqlShowConverter<T extends SqlShowCall>
extends Object
implements SqlNodeConverter<T>

An abstract class for SHOW converters.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.flink.table.planner.operations.converters.SqlNodeConverter

SqlNodeConverter.ConvertContext

Constructor Summary

Constructors

Constructor	Description
AbstractSqlShowConverter()

Method Summary

Modifier and Type	Method	Description
protected Operation	convertShowOperation(T sqlShowCall, SqlNodeConverter.ConvertContext context)
abstract Operation	convertSqlNode(T node, SqlNodeConverter.ConvertContext context)	Convert the given validated SqlNode into an Operation.
ShowLikeOperator	getLikeOp(SqlShowCall sqlShowCall)
abstract Operation	getOperation(T sqlShowCall, String catalogName, String databaseName, String prep, ShowLikeOperator likeOp)
abstract Operation	getOperationWithoutPrep(T sqlShowCall, String catalogName, String databaseName, ShowLikeOperator likeOp)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.table.planner.operations.converters.SqlNodeConverter

supportedSqlKinds

Constructor Detail

AbstractSqlShowConverter

public AbstractSqlShowConverter()

Method Detail

convertShowOperation

protected Operation convertShowOperation(T sqlShowCall,
                                         SqlNodeConverter.ConvertContext context)

getLikeOp

public ShowLikeOperator getLikeOp(SqlShowCall sqlShowCall)

getOperationWithoutPrep

public abstract Operation getOperationWithoutPrep(T sqlShowCall,
                                                  @Nullable
                                                  String catalogName,
                                                  @Nullable
                                                  String databaseName,
                                                  @Nullable
                                                  ShowLikeOperator likeOp)

getOperation

public abstract Operation getOperation(T sqlShowCall,
                                       @Nullable
                                       String catalogName,
                                       @Nullable
                                       String databaseName,
                                       @Nullable
                                       String prep,
                                       @Nullable
                                       ShowLikeOperator likeOp)

convertSqlNode

public abstract Operation convertSqlNode(T node,
                                         SqlNodeConverter.ConvertContext context)

Description copied from interface: SqlNodeConverter

Convert the given validated SqlNode into an Operation.

Specified by:

convertSqlNode in interface SqlNodeConverter<T extends SqlShowCall>

Parameters:

node - a validated SqlNode.

context - the utilities and context information to convert