graphl-cvs

[Flo L. <fl...@us...>]

Update of /cvsroot/graphl/graphl/src/org/mediavirus/graphl/graph/filter
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv4993/src/org/mediavirus/graphl/graph/filter

Added Files:
	SourceFilter.java 
Removed Files:
	TestFilter.java 
Log Message:
added SourceFilter that filters nodes depending on their origin

--- NEW FILE: SourceFilter.java ---
/*
 * Created on 24.08.2005
 */

package org.mediavirus.graphl.graph.filter;

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

import org.mediavirus.graphl.graph.Edge;
import org.mediavirus.graphl.graph.Graph;
import org.mediavirus.graphl.graph.Node;
import org.mediavirus.graphl.vocabulary.NS;

/**
 * @author flo
 */
public class SourceFilter implements GraphFilter {

	protected List sources = new LinkedList();

	protected boolean rejectSources = true;
	protected boolean allMustMatch = true;

	
	/**
	 * @see org.mediavirus.graphl.graph.filter.GraphFilter#acceptNode(org.mediavirus.graphl.graph.Node, org.mediavirus.graphl.graph.Graph)
	 */
	public boolean acceptNode(Node node, Graph graph) {
		
		boolean result = rejectSources;
		
		for (Iterator nodesI = node.getNeighbours(NS.graphl + "definedIn", true).iterator(); nodesI.hasNext();) {
			Node source = (Node) nodesI.next();
			boolean match = false;
			for (Iterator sourcesI = sources.iterator(); sourcesI.hasNext();) {
				String url = (String) sourcesI.next();				
				if (source.getId().equals(url)){
					match = true;
					break;
				}
			}
			if (match) {
				if (!allMustMatch) {
					return !rejectSources;
				}
				else {
					result = !rejectSources;
				}
			}
			else {
				if (allMustMatch) return rejectSources;
			}
		}
		return result;
	}

	/**
	 * @see org.mediavirus.graphl.graph.filter.GraphFilter#acceptEdge(org.mediavirus.graphl.graph.Edge, org.mediavirus.graphl.graph.Graph)
	 */
	public boolean acceptEdge(Edge edge, Graph graph) {
		
		boolean match = false;
		
		for (Iterator sourcesI = sources.iterator(); sourcesI.hasNext();) {
			String url = (String) sourcesI.next();				
			if (url.equals(edge.getSource())){
				match = true;
				break;
			}
		}
		if (match) {
			return !rejectSources;
		}
		else {
			return rejectSources;
		}
	}

	public boolean isRejectSources() {
		return rejectSources;
	}

	public void setRejectSources(boolean rejectSources) {
		this.rejectSources = rejectSources;
	}


	public void addSource(String url) {
		sources.add(url);
	}
	
	public void removeSource(String url) {
		sources.remove(url);
	}

	public Collection getSources() {
		return sources;
	}

}

--- TestFilter.java DELETED ---