org.apache.shardingsphere.infra.federation.optimizer

Class ShardingSphereOptimizer

java.lang.Object

org.apache.shardingsphere.infra.federation.optimizer.ShardingSphereOptimizer

public final class ShardingSphereOptimizer
extends Object

ShardingSphere optimizer.

Constructor Summary

Constructors

Constructor and Description
ShardingSphereOptimizer()

Method Summary

Modifier and Type	Method and Description
org.apache.calcite.rel.RelNode	optimize(String databaseName, String schemaName, org.apache.shardingsphere.sql.parser.sql.common.statement.SQLStatement sqlStatement) Optimize query execution plan.

Methods inherited from class java.lang.Object

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

Constructor Detail

ShardingSphereOptimizer

public ShardingSphereOptimizer()

Method Detail

optimize

public org.apache.calcite.rel.RelNode optimize(String databaseName,
                                               String schemaName,
                                               org.apache.shardingsphere.sql.parser.sql.common.statement.SQLStatement sqlStatement)

Optimize query execution plan.

Parameters:

databaseName - database name

schemaName - schema name

sqlStatement - SQL statement to be optimized

Returns:

optimized relational node