org.apache.flink.table.sqlexec

Class SqlToOperationConverter

java.lang.Object

org.apache.flink.table.sqlexec.SqlToOperationConverter

public class SqlToOperationConverter
extends Object

Mix-in tool class for SqlNode that allows DDL commands to be converted to Operation.

For every kind of SqlNode, there needs to have a corresponding #convert(type) method, the 'type' argument should be the subclass of the supported SqlNode.

Every #convert() should return a Operation which can be used in Planner.

Method Summary

Modifier and Type	Method and Description
static Optional<Operation>	convert(org.apache.flink.table.calcite.FlinkPlannerImpl flinkPlanner, CatalogManager catalogManager, org.apache.calcite.sql.SqlNode sqlNode) This is the main entrance for executing all kinds of DDL/DML SqlNodes, different SqlNode will have it's implementation in the #convert(type) method whose 'type' argument is subclass of SqlNode.

Methods inherited from class java.lang.Object

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

Method Detail

convert

public static Optional<Operation> convert(org.apache.flink.table.calcite.FlinkPlannerImpl flinkPlanner,
                                          CatalogManager catalogManager,
                                          org.apache.calcite.sql.SqlNode sqlNode)

This is the main entrance for executing all kinds of DDL/DML SqlNodes, different SqlNode will have it's implementation in the #convert(type) method whose 'type' argument is subclass of SqlNode.

Parameters:

flinkPlanner - FlinkPlannerImpl to convert sql node to rel node

sqlNode - SqlNode to execute on