Examples with Triple org.apache.clerezza.commons.rdf.Triple used on opensource projects

Example 36 with Triple

use of org.apache.clerezza.commons.rdf.Triple in project stanbol by apache.

the class UserResource method deleteRole.

/**
     * Deletes a named user
     *
     * @param userName
     */
private void deleteRole(String roleName) {
    RDFTerm roleResource = getNamedRole(roleName).getNode();
    Iterator<Triple> roleTriples = systemGraph.filter((BlankNodeOrIRI) roleResource, null, null);
    ArrayList<Triple> buffer = new ArrayList<Triple>();
    Lock readLock = systemGraph.getLock().readLock();
    readLock.lock();
    try {
        while (roleTriples.hasNext()) {
            Triple triple = roleTriples.next();
            buffer.add(triple);
        }
    } finally {
        readLock.unlock();
    }
    // is lock needed?
    Lock writeLock = systemGraph.getLock().writeLock();
    writeLock.lock();
    try {
        systemGraph.removeAll(buffer);
    } finally {
        writeLock.unlock();
    }
}

Example 37 with Triple

use of org.apache.clerezza.commons.rdf.Triple in project stanbol by apache.

the class UserResource method changeLiteral.

/**
     * Replaces/inserts literal value for predicate assumes there is only one
     * triple for the given predicate new value is added before deleting old one
     * in case user is modifying their own data in which case they need triples
     * in place for rights etc.
     *
     * @param userNode node in systemGraph corresponding to the user to change
     * @param predicate property of the triple to change
     * @param newValue new value for given predicate
     */
private void changeLiteral(GraphNode userNode, IRI predicate, String newValue) {
    Iterator<Triple> oldTriples = systemGraph.filter((BlankNodeOrIRI) userNode.getNode(), predicate, null);
    ArrayList<Triple> oldBuffer = new ArrayList<Triple>();
    RDFTerm oldObject = null;
    Lock readLock = systemGraph.getLock().readLock();
    readLock.lock();
    try {
        while (oldTriples.hasNext()) {
            Triple triple = oldTriples.next();
            oldObject = triple.getObject();
            oldBuffer.add(triple);
        }
    } finally {
        readLock.unlock();
    }
    // filter appears to see plain literals and xsd:strings as differerent
    // so not
    // userNode.addPropertyValue(predicate, newValue);
    Literal newObject = new PlainLiteralImpl(newValue);
    userNode.addProperty(predicate, newObject);
    if (newObject.equals(oldObject)) {
        return;
    }
    systemGraph.removeAll(oldBuffer);
}

Example 38 with Triple

use of org.apache.clerezza.commons.rdf.Triple in project stanbol by apache.

the class UserResource method remove.

/**
     * Deletes a named user
     *
     * @param userName
     */
private void remove(String userName) {
    RDFTerm userResource = getNamedUser(userName).getNode();
    Iterator<Triple> userTriples = systemGraph.filter((BlankNodeOrIRI) userResource, null, null);
    ArrayList<Triple> buffer = new ArrayList<Triple>();
    Lock readLock = systemGraph.getLock().readLock();
    readLock.lock();
    try {
        while (userTriples.hasNext()) {
            Triple triple = userTriples.next();
            buffer.add(triple);
        }
    } finally {
        readLock.unlock();
    }
    // ImmutableGraph context = getNamedUser(userName).getNodeContext();
    Lock writeLock = systemGraph.getLock().writeLock();
    writeLock.lock();
    try {
        systemGraph.removeAll(buffer);
    } finally {
        writeLock.unlock();
    }
}

Example 39 with Triple

use of org.apache.clerezza.commons.rdf.Triple in project stanbol by apache.

the class OWLAPIToClerezzaConverterTest method testOWLOntologyToGraph.

@Test
public void testOWLOntologyToGraph() {
    /*
         * Transform the OWLOntology into a Clerezza Graph.
         */
    Graph mGraph = OWLAPIToClerezzaConverter.owlOntologyToClerezzaGraph(ontology);
    /*
         * Print all the triples contained in the Clerezza Graph.
         */
    Iterator<Triple> tripleIt = mGraph.iterator();
    while (tripleIt.hasNext()) {
        Triple triple = tripleIt.next();
        log.info(triple.toString());
    }
}

Example 40 with Triple

use of org.apache.clerezza.commons.rdf.Triple in project stanbol by apache.

the class EnhancementStructureHelper method validateTopicAnnotation.

/**
     * Checks if a fise:TopicAnnotation is valid as defined by 
     * <a herf="https://issues.apache.org/jira/browse/STANBOL-617">STANBOL-617</a>. 
     * NOTE that this also validates all fise:Enhancement related requirements by 
     * calling {@link #validateEnhancement(Graph, IRI, Map)}
     * @param enhancements the enhancements graph
     * @param topicAnnotation the topic annotation to validate
     * @param expectedValues expected values (properties for the values are used as keys)
     */
public static void validateTopicAnnotation(Graph enhancements, IRI topicAnnotation, Map<IRI, RDFTerm> expectedValues) {
    //validate the rdf:type
    Iterator<Triple> rdfTypeIterator = enhancements.filter(topicAnnotation, RDF_TYPE, ENHANCER_TOPICANNOTATION);
    assertTrue("Parsed Enhancement " + topicAnnotation + " is missing the fise:TopicAnnotation type ", rdfTypeIterator.hasNext());
    //TopicAnnotations need to be linked to TextAnnotations describing the
    //section of the text that has a specific Topic.
    //If the topic is for the whole text the TextAnnotation will have no
    //selected-text value
    Iterator<Triple> relationToTextAnnotationIterator = enhancements.filter(topicAnnotation, DC_RELATION, null);
    // check if the relation to the text annotation is set
    assertTrue(relationToTextAnnotationIterator.hasNext());
    while (relationToTextAnnotationIterator.hasNext()) {
        // test if the referred annotations are text annotations
        IRI referredTextAnnotation = (IRI) relationToTextAnnotationIterator.next().getObject();
        assertTrue(enhancements.filter(referredTextAnnotation, RDF_TYPE, ENHANCER_TEXTANNOTATION).hasNext());
    }
    // test if an entity (the topic) is referred (NOTE: in contrast to
    // fise:EntityAnnotations this property is NOT required - cardinality [0..*]
    Iterator<Triple> entityReferenceIterator = enhancements.filter(topicAnnotation, ENHANCER_ENTITY_REFERENCE, null);
    RDFTerm expectedReferencedEntity = expectedValues.get(ENHANCER_ENTITY_REFERENCE);
    while (entityReferenceIterator.hasNext()) {
        //check possible multiple references
        RDFTerm entityReferenceResource = entityReferenceIterator.next().getObject();
        // test if the reference is an URI
        assertTrue("fise:entity-reference value MUST BE of URIs", entityReferenceResource instanceof IRI);
        if (expectedReferencedEntity != null && expectedReferencedEntity.equals(entityReferenceResource)) {
            //found
            expectedReferencedEntity = null;
        }
    }
    assertNull("EntityAnnotation " + topicAnnotation + "fise:entity-reference has not the expected value " + expectedReferencedEntity + "!", expectedReferencedEntity);
    //test if the entity label is set (required)
    Iterator<Triple> entityLabelIterator = enhancements.filter(topicAnnotation, ENHANCER_ENTITY_LABEL, null);
    assertTrue(entityLabelIterator.hasNext());
    RDFTerm expectedEntityLabel = expectedValues.get(ENHANCER_ENTITY_LABEL);
    while (entityLabelIterator.hasNext()) {
        RDFTerm entityLabelResource = entityLabelIterator.next().getObject();
        assertTrue("fise:entity-label values MUST BE PlainLiterals (EntityAnnotation: " + topicAnnotation + ")!", entityLabelResource instanceof Literal);
        if (expectedEntityLabel != null && expectedEntityLabel.equals(entityLabelResource)) {
            expectedEntityLabel = null;
        }
    }
    assertNull("The expected EntityLabel " + expectedEntityLabel + " was not found", expectedEntityLabel);
    // test fise:entity-type(s). NOTE: this is not required - cardinality [0..*]
    Iterator<Triple> entityTypeIterator = enhancements.filter(topicAnnotation, Properties.ENHANCER_ENTITY_TYPE, null);
    RDFTerm expectedEntityType = expectedValues.get(Properties.ENHANCER_ENTITY_TYPE);
    if (entityTypeIterator.hasNext()) {
        RDFTerm entityTypeResource = entityTypeIterator.next().getObject();
        assertTrue("fise:entity-type values MUST BE URIs", entityTypeResource instanceof IRI);
        if (expectedEntityType != null && expectedEntityType.equals(entityTypeResource)) {
            //found
            expectedEntityType = null;
        }
    }
    assertNull("The expected fise:entity-type value " + expectedEntityType + " was not found!", expectedEntityType);
    //test all properties required by fise:Enhancement
    validateEnhancement(enhancements, topicAnnotation, expectedValues);
}