Examples of org.jrdf.graph.global.molecule.MoleculeTraverser

org.jrdf.graph.global.molecule.MoleculeTraverser

This recursively traverses a Molecule calling methods on the handler class. It will call {@link MoleculeHandler#handleStartContainsMolecules(java.util.Set)} and{@link MoleculeHandler#handleEndContainsMolecules(java.util.Set)} if the molecule (or sub-molecule) contains anysubmolecules. If not it will call {@link MoleculeHandler#handleEmptyMolecules()}. It will then iterate over the root triples in the molecule calling {@link MoleculeHandler#handleTriple(org.jrdf.graph.Triple)}, it will then attempt to get the submolecule for each triple. Implementations may want to track the level of the molecule that they are currently in. So having a depth to the handleContainsMolecules method is the way to do this. @author Andrew Newman @version $Id: MoleculeTraverser.java 2894 2009-01-27 21:25:13Z newmana $

    }


    public Iterator<Triple> iterator() {
        HashSet<Triple> set = new HashSet<Triple>();
        MoleculeToTripleIterator mtti = new MoleculeToTripleIterator(set);
        MoleculeTraverser tmpTraverser = new MoleculeTraverserImpl();
        tmpTraverser.traverse(this, mtti);
        return set.iterator();
    }

        this.moleculeComparator = new MoleculeHeadTripleComparatorImpl(comparator);
        this.handler = new MoleculeGraphHandlerImpl(nodePool, readableIndex, moleculeComparator);
    }


    public void add(Molecule molecule) {
        MoleculeTraverser traverser = new MoleculeTraverserImpl();
        traverser.traverse(molecule, new AddMoleculeToIndex(writableIndex, localizer));
    }

    }


    @Override
    public String toString() {
        StringBuilder builder = new StringBuilder();
        MoleculeTraverser traverser = new MoleculeTraverserImpl();
        try {
            ClosableIterator<Molecule> iterator = iterator();
            try {
                MoleculeHandler tmpHandler = new MoleculeToText(builder, localizer.getLocalizer());
                while (iterator.hasNext()) {
                    Molecule molecule = iterator.next();
                    traverser.traverse(molecule, tmpHandler);
                }
                return builder.toString();
            } finally {
                iterator.close();
            }

Related Classes of org.jrdf.graph.global.molecule.MoleculeTraverser

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