Package com.semedy.reasoner.reasoning.processes

Class TupleEnumeratorCrossProduct

java.lang.Object

com.semedy.reasoner.reasoning.processes.TupleEnumeratorCrossProduct

All Implemented Interfaces:

TupleEnumerator, Closeable, AutoCloseable

Direct Known Subclasses:

TupleEnumeratorOneToOneJoin

public class TupleEnumeratorCrossProduct
extends Object
implements TupleEnumerator

Constructor Summary

Constructors

Constructor	Description
TupleEnumeratorCrossProduct()
TupleEnumeratorCrossProduct(CrossProductBaseRelation crossProductBaseRelation)
TupleEnumeratorCrossProduct(CrossProductBaseRelation crossProductBaseRelation, TupleEnumerator[] enumerators)
TupleEnumeratorCrossProduct(CrossProductBaseRelation crossProductBaseRelation, TupleEnumerator enm1, int argumentPosition1, TupleEnumerator enm2, int argumentPosition2)

Method Summary

Modifier and Type	Method	Description
TupleEnumerator	cloneEnumerator()	clones the enumerator
void	close()	close the enumerator
TupleBuffer	getBuffer()	get a buffer where the elements are inserted
boolean	hasFinished()	flag the end of the enumeration
boolean	hasMoreElements()	Are there more elements in enumeration?
void	nextElement()	creates the next element in the buffer
void	nextElementIntern()
void	setFilter(long[] filter)	set the filters.

Methods inherited from class java.lang.Object

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

Constructor Details

TupleEnumeratorCrossProduct

public TupleEnumeratorCrossProduct(CrossProductBaseRelation crossProductBaseRelation)
                            throws IOException,
EDBException

Throws:

IOException

EDBException

TupleEnumeratorCrossProduct

public TupleEnumeratorCrossProduct(CrossProductBaseRelation crossProductBaseRelation,
 TupleEnumerator[] enumerators)
                            throws IOException,
EDBException

Throws:

IOException

EDBException

TupleEnumeratorCrossProduct

public TupleEnumeratorCrossProduct()

TupleEnumeratorCrossProduct

public TupleEnumeratorCrossProduct(CrossProductBaseRelation crossProductBaseRelation,
 TupleEnumerator enm1,
 int argumentPosition1,
 TupleEnumerator enm2,
 int argumentPosition2)
                            throws IOException,
EDBException

Throws:

IOException

EDBException

Method Details

hasMoreElements

public boolean hasMoreElements()
                        throws IOException,
EDBException

Description copied from interface: TupleEnumerator

Are there more elements in enumeration?

Specified by:

hasMoreElements in interface TupleEnumerator

Throws:

IOException

EDBException

nextElement

public void nextElement()
                 throws IOException,
EDBException

Description copied from interface: TupleEnumerator

creates the next element in the buffer

Specified by:

nextElement in interface TupleEnumerator

Throws:

IOException

EDBException

nextElementIntern

public void nextElementIntern()
                       throws IOException,
EDBException

Throws:

IOException

EDBException

hasFinished

public boolean hasFinished()
                    throws IOException,
EDBException

Description copied from interface: TupleEnumerator

flag the end of the enumeration

Specified by:

hasFinished in interface TupleEnumerator

Throws:

IOException

EDBException

getBuffer

public TupleBuffer getBuffer()

Description copied from interface: TupleEnumerator

get a buffer where the elements are inserted

Specified by:

getBuffer in interface TupleEnumerator

Returns:

close

public void close()
           throws IOException

Description copied from interface: TupleEnumerator

close the enumerator

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in interface TupleEnumerator

Throws:

IOException

setFilter

public void setFilter(long[] filter)

set the filters. Is an optimization

Parameters:

filter -

cloneEnumerator

public TupleEnumerator cloneEnumerator()
                                throws IOException

Description copied from interface: TupleEnumerator

clones the enumerator

Specified by:

cloneEnumerator in interface TupleEnumerator

Throws:

IOException