/*
* $Header$
* $Revision: 982 $
* $Date: 2006-12-08 18:42:51 +1000 (Fri, 08 Dec 2006) $
*
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2003-2009 The JRDF Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* the JRDF Project (http://jrdf.sf.net/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The JRDF Project" and "JRDF" must not be used to endorse
* or promote products derived from this software without prior written
* permission. For written permission, please contact
* newmana@users.sourceforge.net.
*
* 5. Products derived from this software may not be called "JRDF"
* nor may "JRDF" appear in their names without prior written
* permission of the JRDF Project.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the JRDF Project. For more
* information on JRDF, please see <http://jrdf.sourceforge.net/>.
*
*/
package org.jrdf.parser.ntriples.parser;
import org.jrdf.graph.Node;
import org.jrdf.graph.ObjectNode;
import org.jrdf.graph.PredicateNode;
import org.jrdf.graph.SubjectNode;
import org.jrdf.graph.Triple;
import org.jrdf.graph.TripleFactory;
import org.jrdf.parser.ParseException;
import org.jrdf.util.boundary.RegexMatcher;
import org.jrdf.util.boundary.RegexMatcherFactory;
import static org.jrdf.util.param.ParameterUtil.checkNotNull;
import java.util.regex.Pattern;
public class RegexTripleParserImpl implements RegexTripleParser {
private final RegexMatcherFactory regexMatcherFactory;
private final NodeParser nodeParser;
private final TripleFactory tripleFactory;
private final NodeMaps nodeMaps;
public RegexTripleParserImpl(final RegexMatcherFactory newRegexFactory, final TripleFactory newTripleFactory,
final NodeMaps newNodeMaps) {
checkNotNull(newRegexFactory, newTripleFactory, newNodeMaps);
regexMatcherFactory = newRegexFactory;
tripleFactory = newTripleFactory;
nodeMaps = newNodeMaps;
nodeParser = new NodeParserImpl();
}
public Triple parseTripleLine(final RegexMatcher subjectMatcher, final RegexMatcher predicateMatcher,
final RegexMatcher objectMatcher) throws ParseException {
final SubjectNode subject = (SubjectNode) nodeParser.parseNode(nodeMaps.getSubjectMap(), subjectMatcher);
final PredicateNode predicate = (PredicateNode) nodeParser.parseNode(nodeMaps.getPredicateMap(),
predicateMatcher);
final ObjectNode object = (ObjectNode) nodeParser.parseNode(nodeMaps.getObjectMap(), objectMatcher);
if (subject != null && predicate != null && object != null) {
return tripleFactory.createTriple(subject, predicate, object);
} else {
throw new ParseException("Failed to parse all triples in line: " + printNode(subjectMatcher, subject) +
", " + printNode(predicateMatcher, predicate) + ", " + printNode(objectMatcher, object), 0);
}
}
public RegexMatcher createMatcher(final RegexMatcher regexMatcher, final Pattern nodeRegex, final int nodeGroup) {
return regexMatcherFactory.createMatcher(nodeRegex, regexMatcher.group(nodeGroup));
}
private String printNode(final RegexMatcher matcher, final Node node) {
return matcher + "(" + node + ")";
}
}