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RDF2go is an implementation-independent Java API with the design goals: portability (hence the name), performance and ease of implementation. This project was started at FZI Forschungszentrum Informatik Karlsruhe, Germany - www.fzi.de
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/**
 * LICENSE INFORMATION
 *
 * Copyright 2005-2008 by FZI (http://www.fzi.de).
 * Licensed under a BSD license (http://www.opensource.org/licenses/bsd-license.php)
 *  = Max Völkel
 *  = FZI Forschungszentrum Informatik Karlsruhe, Karlsruhe, Germany
 *  = 2010
 *
 * Further project information at http://semanticweb.org/wiki/RDF2Go
 */

package org.ontoware.rdf2go.model.impl;

import java.util.Collection;
import java.util.Iterator;
import java.util.LinkedList;

import org.ontoware.rdf2go.exception.ModelRuntimeException;
import org.ontoware.rdf2go.model.DiffReader;
import org.ontoware.rdf2go.model.ModelAddRemove;
import org.ontoware.rdf2go.model.Statement;
import org.ontoware.rdf2go.model.node.Node;
import org.ontoware.rdf2go.model.node.Resource;
import org.ontoware.rdf2go.model.node.URI;
import org.ontoware.rdf2go.model.node.impl.DatatypeLiteralImpl;
import org.ontoware.rdf2go.model.node.impl.LanguageTagLiteralImpl;
import org.ontoware.rdf2go.model.node.impl.PlainLiteralImpl;
import org.ontoware.rdf2go.model.node.impl.URIImpl;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * For high-performance, adapters should override all of these methods, to avoid
 * internal object creations, such as "new URIImpl(subjectURIString)" in
 * "removeStatement(String subjectURIString, URI predicate, String literal)"
 * 
 * @author mvo
 * 
 */
public abstract class AbstractModelAddRemove extends AbstractModelWriter
		implements ModelAddRemove {

	/**
     * 
     */
    private static final long serialVersionUID = -8108651111897609624L;
	@SuppressWarnings("unused")
	private static Logger log = LoggerFactory
			.getLogger(AbstractModelAddRemove.class);

	@Override
    public void removeStatement(String subjectURIString, URI predicate,
			String literal) throws ModelRuntimeException {
		removeStatement(new URIImpl(subjectURIString), predicate,
				new PlainLiteralImpl(literal));
	}

	@Override
    public void removeStatement(String subjectURIString, URI predicate,
			String literal, String languageTag) throws ModelRuntimeException {
		removeStatement(new URIImpl(subjectURIString), predicate,
				new LanguageTagLiteralImpl(literal, languageTag));
	}

	@Override
    public void removeStatement(String subjectURIString, URI predicate,
			String literal, URI datatypeURI) throws ModelRuntimeException {
		removeStatement(new URIImpl(subjectURIString), predicate,
				new DatatypeLiteralImpl(literal, datatypeURI));
	}

	@Override
    public void removeStatement(Resource subject, URI predicate, String literal)
			throws ModelRuntimeException {
		removeStatement(subject, predicate, new PlainLiteralImpl(literal));
	}

	@Override
    public void removeStatement(Resource subject, URI predicate,
			String literal, String languageTag) throws ModelRuntimeException {
		removeStatement(subject, predicate, new LanguageTagLiteralImpl(literal,
				languageTag));
	}

	@Override
    public void removeStatement(Resource subject, URI predicate,
			String literal, URI datatypeURI) throws ModelRuntimeException {
		removeStatement(subject, predicate, new DatatypeLiteralImpl(literal,
				datatypeURI));
	}

	@Override
    public void removeStatement(Statement statement)
			throws ModelRuntimeException {
		removeStatement(statement.getSubject(), statement.getPredicate(),
				statement.getObject());
	}

	// bulk operations

	@Override
    public void removeAll(Iterator other)
			throws ModelRuntimeException {
		while (other.hasNext()) {
			Statement stmt = other.next();
			removeStatement(stmt);
		}
	}

	@Override
    public void removeAll() throws ModelRuntimeException {
		// fill temp
		Collection temp = new LinkedList();
		for (Statement statement : this) {
			temp.add(statement);
		}

		// delete
		for (Statement s : temp) {
			removeStatement(s);
		}
	}

	@Override
    public void update(DiffReader diff) throws ModelRuntimeException {
		removeAll(diff.getRemoved().iterator());
		addAll(diff.getAdded().iterator());
	}

	// core rdf2go model methods
	// /////////////////////////

	/* this method is replicated here for informational purposes only */
	@Override
	public abstract void addStatement(Resource subject, URI predicate,
			Node object) throws ModelRuntimeException;

	@Override
    public abstract void removeStatement(Resource subject, URI predicate,
			Node object) throws ModelRuntimeException;

}