org.trippi.impl.jena
Class JenaTupleIterator

java.lang.Object
  org.trippi.TupleIterator
      org.trippi.impl.jena.JenaTupleIterator

public class JenaTupleIterator
extends TupleIterator

An TupleIterator that wraps a Jena QueryResult object.

This implementation turns underlying unchecked Jena exceptions into checked ones. FIXME: Actually do this.

Author:

cwilper@cs.cornell.edu

Field Summary

Fields inherited from class org.trippi.TupleIterator

INPUT_FORMATS, OUTPUT_FORMATS

Constructor Summary

JenaTupleIterator(com.hp.hpl.jena.rdql.QueryResults results)
Initialize the iterator given a Jena QueryResult.

Method Summary

void	close() Release resources held by this TupleIterator.
void	finalize() Ensure close() gets called at garbage collection time.
boolean	hasNext() Return true if there are more results.
java.lang.String[]	names() Get the names of the binding variables.
java.util.Map	next() Return the next result.

Methods inherited from class org.trippi.TupleIterator

count, fromStream, main, nextTriples, setAliasMap, toStream

Methods inherited from class java.lang.Object

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

Constructor Detail

JenaTupleIterator

public JenaTupleIterator(com.hp.hpl.jena.rdql.QueryResults results)
                  throws TrippiException

Initialize the iterator given a Jena QueryResult.

Throws:

TrippiException

Method Detail

hasNext

public boolean hasNext()

Description copied from class: TupleIterator

Return true if there are more results.

Specified by:

hasNext in class TupleIterator

next

public java.util.Map next()
                   throws TrippiException

Description copied from class: TupleIterator

Return the next result.

Specified by:

next in class TupleIterator

Throws:

TrippiException

names

public java.lang.String[] names()

Description copied from class: TupleIterator

Get the names of the binding variables. These will be the keys in the map for result.

Specified by:

names in class TupleIterator

close

public void close()
           throws TrippiException

Description copied from class: TupleIterator

Release resources held by this TupleIterator.

Specified by:

close in class TupleIterator

Throws:

TrippiException

finalize

public void finalize()
              throws TrippiException

Ensure close() gets called at garbage collection time.

Overrides:

finalize in class TupleIterator

Throws:

TrippiException