Package com.semedy.reasoner.api.edb

Interface TupleEnumerator

All Superinterfaces:

AutoCloseable, Closeable

All Known Subinterfaces:

SelectableIndexEnumerator, SortedIndexEnumerator

All Known Implementing Classes:

EmptyTuplesEnumerator, EnumeratorOneElement, OneElementTuplesEnumerator, PersistentTuplesEnumerator, SortedEnumeratorOneToOne, SortedIndexEnumeratorOneToOne, TupleEnumeratorCrossProduct, TupleEnumeratorOneToOneJoin, TupleEnumeratorOneToOneJoinRelation

public interface TupleEnumerator
extends Closeable

iterator for tuples

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

Method Details

hasMoreElements

boolean hasMoreElements()
                 throws IOException,
EDBException

Are there more elements in enumeration?

Throws:

IOException

EDBException

nextElement

void nextElement()
          throws IOException,
EDBException

creates the next element in the buffer

Throws:

IOException

EDBException

hasFinished

boolean hasFinished()
             throws IOException,
EDBException

flag the end of the enumeration

Throws:

IOException

EDBException

getBuffer

TupleBuffer getBuffer()

get a buffer where the elements are inserted

Returns:

close

void close()
    throws IOException

close the enumerator

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException

cloneEnumerator

TupleEnumerator cloneEnumerator()
                         throws IOException,
EDBException

clones the enumerator

Throws:

IOException

EDBException