|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectorg.apache.hadoop.hive.ql.exec.Operator<T>
org.apache.hadoop.hive.ql.exec.CommonJoinOperator<joinDesc>
org.apache.hadoop.hive.ql.exec.JoinOperator
public class JoinOperator
Join operator implementation.
Nested Class Summary |
---|
Nested classes/interfaces inherited from class org.apache.hadoop.hive.ql.exec.CommonJoinOperator |
---|
CommonJoinOperator.IntermediateObject |
Nested classes/interfaces inherited from class org.apache.hadoop.hive.ql.exec.Operator |
---|
Operator.OperatorFunc, Operator.ProgressCounter, Operator.State |
Field Summary |
---|
Fields inherited from class org.apache.hadoop.hive.ql.exec.CommonJoinOperator |
---|
alias, condn, dummyObjVectors, joinValues, joinValuesObjectInspectors, joinValuesStandardObjectInspectors, LOG, noOuterJoin, numAliases, order, spillTableDesc, totalSz |
Fields inherited from class org.apache.hadoop.hive.ql.exec.Operator |
---|
beginTime, childOperators, childOperatorsArray, childOperatorsTag, colExprMap, conf, counterNames, counterNameToEnum, counters, done, fatalErrorCntr, id, inputObjInspectors, inputRows, numInputRowsCntr, numOutputRowsCntr, operatorId, out, outputObjInspector, outputRows, parentOperators, reporter, state, statsMap, timeTakenCntr, totalTime |
Constructor Summary | |
---|---|
JoinOperator()
|
Method Summary | |
---|---|
int |
getType()
Should be overridden to return the type of the specific operator among the types in OperatorType |
protected void |
initializeOp(org.apache.hadoop.conf.Configuration hconf)
Operator specific initialization. |
void |
processOp(Object row,
int tag)
Process the row. |
Methods inherited from class org.apache.hadoop.hive.ql.exec.CommonJoinOperator |
---|
checkAndGenObject, closeOp, computeValues, endGroup, getJoinOutputObjectInspector, getName, getNextSize, getObjectInspectorsFromEvaluators, getPosToAliasMap, getSpillTableDesc, getStandardObjectInspectors, populateJoinKeyValue, setPosToAliasMap, startGroup |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
---|
public JoinOperator()
Method Detail |
---|
protected void initializeOp(org.apache.hadoop.conf.Configuration hconf) throws HiveException
Operator
initializeOp
in class CommonJoinOperator<joinDesc>
HiveException
public void processOp(Object row, int tag) throws HiveException
Operator
processOp
in class Operator<joinDesc>
row
- The object representing the row.tag
- The tag of the row usually means which parent this row comes from.
Rows with the same tag should have exactly the same rowInspector all the time.
HiveException
public int getType()
Operator
getType
in class Operator<joinDesc>
|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |