Package prefuse.util.io

Examples of prefuse.util.io.XMLWriter

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        Schema ns = graph.getNodeTable().getSchema();
        Schema es = graph.getEdgeTable().getSchema();
        checkGraphMLSchema(ns);
        checkGraphMLSchema(es);
       
        XMLWriter xml = new XMLWriter(new PrintWriter(os));
        xml.begin(Tokens.GRAPHML_HEADER, 2);
       
        xml.comment("prefuse GraphML Writer | "
                + new Date(System.currentTimeMillis()));
       
        // print the graph schema
        printSchema(xml, Tokens.NODE, ns, null);
        printSchema(xml, Tokens.EDGE, es, new String[] {
            graph.getEdgeSourceField(), graph.getEdgeTargetField()
        });
        xml.println();
       
        // print graph contents
        xml.start(Tokens.GRAPH, Tokens.EDGEDEF,
            graph.isDirected() ? Tokens.DIRECTED : Tokens.UNDIRECTED);
       
        // print the nodes
        xml.comment("nodes");
        Iterator nodes = graph.nodes();
        while ( nodes.hasNext() ) {
            Node n = (Node)nodes.next();
           
            if ( ns.getColumnCount() > 0 ) {
                xml.start(Tokens.NODE, Tokens.ID, String.valueOf(n.getRow()));
                for ( int i=0; i<ns.getColumnCount(); ++i ) {
                    String field = ns.getColumnName(i);
                    xml.contentTag(Tokens.DATA, Tokens.KEY, field,
                                   n.getString(field));
                }
                xml.end();
            } else {
                xml.tag(Tokens.NODE, Tokens.ID, String.valueOf(n.getRow()));
            }
        }
       
        // add a blank line
        xml.println();
       
        // print the edges
        String[] attr = new String[]{Tokens.ID, Tokens.SOURCE, Tokens.TARGET};
        String[] vals = new String[3];
       
        xml.comment("edges");
        Iterator edges = graph.edges();
        while ( edges.hasNext() ) {
            Edge e = (Edge)edges.next();
            vals[0] = String.valueOf(e.getRow());
            vals[1] = String.valueOf(e.getSourceNode().getRow());
            vals[2] = String.valueOf(e.getTargetNode().getRow());
           
            if ( es.getColumnCount() > 2 ) {
                xml.start(Tokens.EDGE, attr, vals, 3);
                for ( int i=0; i<es.getColumnCount(); ++i ) {
                    String field = es.getColumnName(i);
                    if ( field.equals(graph.getEdgeSourceField()) ||
                         field.equals(graph.getEdgeTargetField()) )
                        continue;
                   
                    xml.contentTag(Tokens.DATA, Tokens.KEY, field,
                                   e.getString(field));
                }
                xml.end();
            } else {
                xml.tag(Tokens.EDGE, attr, vals, 3);
            }
        }
        xml.end();
       
        // finish writing file
        xml.finish("</"+Tokens.GRAPHML+">\n");
    }
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    {
        // first, check the schemas to ensure GraphML compatibility
        Schema ns = graph.getNodeTable().getSchema();
        checkTreeMLSchema(ns);
       
        XMLWriter xml = new XMLWriter(new PrintWriter(os));
        xml.begin();
       
        xml.comment("prefuse TreeML Writer | "
                + new Date(System.currentTimeMillis()));
               
        // print the tree contents
        xml.start(Tokens.TREE);
       
        // print the tree node schema
        xml.start(Tokens.DECLS);
        String[] attr = new String[] {Tokens.NAME, Tokens.TYPE };
        String[] vals = new String[2];

        for ( int i=0; i<ns.getColumnCount(); ++i ) {
            vals[0] = ns.getColumnName(i);
            vals[1] = (String)TYPES.get(ns.getColumnType(i));
            xml.tag(Tokens.DECL, attr, vals, 2);
        }
        xml.end();
        xml.println();
       
       
        // print the tree nodes
        attr[0] = Tokens.NAME;
        attr[1] = Tokens.VALUE;
       
        Node n = graph.getSpanningTree().getRoot();
        while ( n != null ) {
            boolean leaf = (n.getChildCount() == 0);
           
            if ( leaf ) {
                xml.start(Tokens.LEAF);
            } else {
                xml.start(Tokens.BRANCH);
            }
           
            if ( ns.getColumnCount() > 0 ) {
                for ( int i=0; i<ns.getColumnCount(); ++i ) {
                    vals[0] = ns.getColumnName(i);
                    vals[1] = n.getString(vals[0]);
                    if (vals[1] != null) {
                      xml.tag(Tokens.ATTR, attr, vals, 2);
                    }
                }
            }
            n = nextNode(n, xml);
        }
       
        // finish writing file
        xml.end();
        xml.finish();
    }
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Related Classes of prefuse.util.io.XMLWriter

  • prefuse.data.io.GraphMLWriter
  • prefuse.data.io.TreeMLWriter
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