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java.lang.Objectunity.operators.Operator
unity.operators.XJoin
public class XJoin
| Constructor Summary | |
|---|---|
XJoin(Operator[] in,
EquiJoinPredicate p,
int bsize,
int bfr,
int numpart,
boolean MNJoin)
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| Method Summary | |
|---|---|
boolean |
alreadyMerged(int arrive,
int depart,
int pArrive,
int pDepart,
int part,
int source)
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int |
choosePartition()
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void |
close()
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void |
init()
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Tuple |
next()
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java.lang.String |
toString()
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| Methods inherited from class unity.operators.Operator |
|---|
getOutputRelation, getPageIOs, getPagesRead, getTupleIOs, getTuplesOutput, getTuplesRead, hasNext, isBuffered, printTree, setOutputRelation |
| Methods inherited from class java.lang.Object |
|---|
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Constructor Detail |
|---|
public XJoin(Operator[] in,
EquiJoinPredicate p,
int bsize,
int bfr,
int numpart,
boolean MNJoin)
| Method Detail |
|---|
public void init()
throws java.io.IOException
init in class Operatorjava.io.IOException
public void close()
throws java.io.IOException
close in class Operatorjava.io.IOException
public boolean alreadyMerged(int arrive,
int depart,
int pArrive,
int pDepart,
int part,
int source)
public Tuple next()
throws java.io.IOException
next in class Operatorjava.io.IOExceptionpublic int choosePartition()
public java.lang.String toString()
toString in class java.lang.Object
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