org.trippi
Class TripleIterator

java.lang.Object
  org.trippi.TripleIterator

Direct Known Subclasses:

DistinctTripleIterator, KowariTripleIterator, LimitedTripleIterator, MPTTripleIterator, OracleTripleIterator, PoolAwareTripleIterator, RIOTripleIterator, SesameTripleIterator, SynchronizedTripleIterator, TupleBasedTripleIterator

public abstract class TripleIterator
extends java.lang.Object

An iterator over a series of Triple objects.

Author:

cwilper@cs.cornell.edu

Field Summary

static RDFFormat[]	INPUT_FORMATS Formats supported for reading.
static RDFFormat[]	OUTPUT_FORMATS Formats supported for writing.

Constructor Summary

TripleIterator()

Method Summary

void	addToGraph(org.jrdf.graph.Graph graph) Add all triples in the iterator to the given Graph, then close the iterator.
abstract void	close() Release resources held by this iterator.
int	count() Get the number of triples in the iterator, then close it.
void	deleteFromGraph(org.jrdf.graph.Graph graph) Delete all triples in the iterator from the given Graph, then close the iterator.
static TripleIterator	fromStream(java.io.InputStream in, RDFFormat format) Get an iterator over the triples in the given stream.
static TripleIterator	fromStream(java.io.InputStream in, java.lang.String baseURI, RDFFormat format) Get an iterator over the triples in the given stream.
abstract boolean	hasNext() Return true if there are any more triples.
abstract org.jrdf.graph.Triple	next() Return the next triple.
void	setAliasMap(java.util.Map aliases)
int	toStream(java.io.OutputStream out, RDFFormat format) Serialize to the given stream.

Methods inherited from class java.lang.Object

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

Field Detail

INPUT_FORMATS

public static final RDFFormat[] INPUT_FORMATS

Formats supported for reading.

See Also:

fromStream(InputStream, String, RDFFormat)

OUTPUT_FORMATS

public static final RDFFormat[] OUTPUT_FORMATS

Formats supported for writing.

See Also:

toStream(OutputStream, RDFFormat)

Constructor Detail

TripleIterator

public TripleIterator()

Method Detail

hasNext

public abstract boolean hasNext()
                         throws TrippiException

Return true if there are any more triples.

Throws:

TrippiException

next

public abstract org.jrdf.graph.Triple next()
                                    throws TrippiException

Return the next triple.

Throws:

TrippiException

close

public abstract void close()
                    throws TrippiException

Release resources held by this iterator.

Throws:

TrippiException

setAliasMap

public void setAliasMap(java.util.Map aliases)

count

public int count()
          throws TrippiException

Get the number of triples in the iterator, then close it.

Throws:

TrippiException

toStream

public int toStream(java.io.OutputStream out,
                    RDFFormat format)
             throws TrippiException

Serialize to the given stream. After successfully writing, the TripleIterator will be closed, but not the outputstream.

Throws:

TrippiException

fromStream

public static TripleIterator fromStream(java.io.InputStream in,
                                        java.lang.String baseURI,
                                        RDFFormat format)
                                 throws TrippiException

Get an iterator over the triples in the given stream. The baseURI is used to resolve any relative URI references. If given as null, http://localhost/ will be used.

Throws:

TrippiException

fromStream

public static TripleIterator fromStream(java.io.InputStream in,
                                        RDFFormat format)
                                 throws TrippiException

Get an iterator over the triples in the given stream.

Throws:

TrippiException

addToGraph

public void addToGraph(org.jrdf.graph.Graph graph)
                throws TrippiException

Add all triples in the iterator to the given Graph, then close the iterator.

Throws:

TrippiException

deleteFromGraph

public void deleteFromGraph(org.jrdf.graph.Graph graph)
                     throws TrippiException

Delete all triples in the iterator from the given Graph, then close the iterator.

Throws:

TrippiException