Package com.semedy.reasoner.edb.persistentstore

Class PersistentTuplesEnumerator

java.lang.Object

com.semedy.reasoner.edb.persistentstore.PersistentTuplesEnumerator

All Implemented Interfaces:

TupleEnumerator, Closeable, AutoCloseable

public class PersistentTuplesEnumerator
extends Object
implements TupleEnumerator, Closeable

Constructor Summary

Constructors

Constructor	Description
PersistentTuplesEnumerator(int arity, long[] grounds, BPlusTree<long[],TupleBuffer> bplustree)

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

Methods inherited from class java.lang.Object

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

Constructor Details

PersistentTuplesEnumerator

public PersistentTuplesEnumerator(int arity,
 long[] grounds,
 BPlusTree<long[],TupleBuffer> bplustree)
                           throws IOException

Throws:

IOException

Method Details

cloneEnumerator

public TupleEnumerator cloneEnumerator()
                                throws IOException

Description copied from interface: TupleEnumerator

clones the enumerator

Specified by:

cloneEnumerator in interface TupleEnumerator

Throws:

IOException

hasMoreElements

public boolean hasMoreElements()

Description copied from interface: TupleEnumerator

Are there more elements in enumeration?

Specified by:

hasMoreElements in interface TupleEnumerator

nextElement

public void nextElement()
                 throws IOException

Description copied from interface: TupleEnumerator

creates the next element in the buffer

Specified by:

nextElement in interface TupleEnumerator

Throws:

IOException

getBuffer

public TupleBuffer getBuffer()

Description copied from interface: TupleEnumerator

get a buffer where the elements are inserted

Specified by:

getBuffer in interface TupleEnumerator

Returns:

hasFinished

public boolean hasFinished()

Description copied from interface: TupleEnumerator

flag the end of the enumeration

Specified by:

hasFinished in interface TupleEnumerator

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