org.apache.hadoop.hive.ql.optimizer.calcite.rules.jdbc

Class JDBCProjectPushDownRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

org.apache.hadoop.hive.ql.optimizer.calcite.rules.jdbc.JDBCProjectPushDownRule

public class JDBCProjectPushDownRule
extends org.apache.calcite.plan.RelOptRule

JDBCProjectPushDownRule convert a HiveProject into a JdbcRules.JdbcProject and pushes it down below the HiveJdbcConverter} operator so it will be sent to the external table.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.calcite.plan.RelOptRule

org.apache.calcite.plan.RelOptRule.ConverterRelOptRuleOperand

Field Summary

Fields

Modifier and Type	Field and Description
static JDBCProjectPushDownRule	INSTANCE

Fields inherited from class org.apache.calcite.plan.RelOptRule

description, operands, relBuilderFactory

Constructor Summary

Constructors

Constructor and Description
JDBCProjectPushDownRule()

Method Summary

Modifier and Type	Method and Description
boolean	matches(org.apache.calcite.plan.RelOptRuleCall call)
void	onMatch(org.apache.calcite.plan.RelOptRuleCall call)

Methods inherited from class org.apache.calcite.plan.RelOptRule

any, convert, convert, convertList, convertOperand, convertOperand, equals, equals, getOperand, getOperands, getOutConvention, getOutTrait, hashCode, none, operand, operand, operand, operand, operand, operandJ, operandJ, some, toString, unordered

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

INSTANCE

public static final JDBCProjectPushDownRule INSTANCE

Constructor Detail

JDBCProjectPushDownRule

public JDBCProjectPushDownRule()

Method Detail

matches

public boolean matches(org.apache.calcite.plan.RelOptRuleCall call)

Overrides:

matches in class org.apache.calcite.plan.RelOptRule

onMatch

public void onMatch(org.apache.calcite.plan.RelOptRuleCall call)

Specified by:

onMatch in class org.apache.calcite.plan.RelOptRule