/*
Derby - Class org.apache.derby.impl.sql.execute.rts.RealHashLeftOuterJoinStatistics
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to you under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package org.apache.derby.impl.sql.execute.rts;
import org.apache.derby.catalog.UUID;
import org.apache.derby.impl.sql.catalog.XPLAINResultSetDescriptor;
import org.apache.derby.impl.sql.catalog.XPLAINResultSetTimingsDescriptor;
import org.apache.derby.impl.sql.execute.xplain.XPLAINUtil;
import org.apache.derby.iapi.services.i18n.MessageService;
import org.apache.derby.iapi.reference.SQLState;
/**
ResultSetStatistics implemenation for HashLeftOuterJoinResultSet.
*/
public class RealHashLeftOuterJoinStatistics
extends RealNestedLoopLeftOuterJoinStatistics
{
// CONSTRUCTORS
/**
*
*
*/
public RealHashLeftOuterJoinStatistics(
int numOpens,
int rowsSeen,
int rowsFiltered,
long constructorTime,
long openTime,
long nextTime,
long closeTime,
int resultSetNumber,
int rowsSeenLeft,
int rowsSeenRight,
int rowsReturned,
long restrictionTime,
double optimizerEstimatedRowCount,
double optimizerEstimatedCost,
String userSuppliedOptimizerOverrides,
ResultSetStatistics leftResultSetStatistics,
ResultSetStatistics rightResultSetStatistics,
int emptyRightRowsReturned
)
{
super(
numOpens,
rowsSeen,
rowsFiltered,
constructorTime,
openTime,
nextTime,
closeTime,
resultSetNumber,
rowsSeenLeft,
rowsSeenRight,
rowsReturned,
restrictionTime,
optimizerEstimatedRowCount,
optimizerEstimatedCost,
userSuppliedOptimizerOverrides,
leftResultSetStatistics,
rightResultSetStatistics,
emptyRightRowsReturned
);
}
// ResultSetStatistics methods
// Class implementation
protected void setNames()
{
nodeName = MessageService.getTextMessage(SQLState.RTS_HASH_LEFT_OJ);
resultSetName =
MessageService.getTextMessage(SQLState.RTS_HASH_LEFT_OJ_RS);
}
public String getRSXplainType() { return XPLAINUtil.OP_JOIN_HASH_LO; }
public String getRSXplainDetails()
{
String op_details = "("+this.resultSetNumber + ")" +
this.resultSetName + ", ";
// check to see if this NL Join is part of an Exist clause
if (this.oneRowRightSide) op_details+= ", EXISTS JOIN";
return op_details;
}
public Object getResultSetDescriptor(Object rsID, Object parentID,
Object scanID, Object sortID, Object stmtID, Object timingID)
{
return new XPLAINResultSetDescriptor(
(UUID)rsID,
getRSXplainType(),
getRSXplainDetails(),
new Integer(this.numOpens),
null, // index updates
null, // lock mode
null, // lock granularity
(UUID)parentID,
new Double(this.optimizerEstimatedRowCount),
new Double(this.optimizerEstimatedCost),
null, // affected rows
null, // deferred rows
null, // the input rows
new Integer(this.rowsSeenLeft),
new Integer(this.rowsSeenRight),
new Integer(this.rowsFiltered),
new Integer(this.rowsReturned),
new Integer(this.emptyRightRowsReturned),
null, // index key optimization
(UUID)scanID,
(UUID)sortID,
(UUID)stmtID,
(UUID)timingID);
}
}