Examples with GraphElementsController org.gephi.datalab.api.GraphElementsController used on opensource projects

Example 1 with GraphElementsController

use of org.gephi.datalab.api.GraphElementsController in project gephi by gephi.

the class Free method execute.

@Override
public void execute() {
    GraphElementsController gec = Lookup.getDefault().lookup(GraphElementsController.class);
    gec.setNodesFixed(nodes, false);
    Lookup.getDefault().lookup(DataTablesController.class).refreshCurrentTable();
}

Example 2 with GraphElementsController

use of org.gephi.datalab.api.GraphElementsController in project gephi by gephi.

the class MergeNodes method execute.

@Override
public void execute() {
    Graph graph = Lookup.getDefault().lookup(GraphController.class).getGraphModel().getGraph();
    GraphElementsController gec = Lookup.getDefault().lookup(GraphElementsController.class);
    Node newNode = gec.mergeNodes(graph, nodes, selectedNode, columns, mergeStrategies, deleteMergedNodes);
    Lookup.getDefault().lookup(DataTablesController.class).setNodeTableSelection(new Node[] { newNode });
    NbPreferences.forModule(MergeNodes.class).putBoolean(DELETE_MERGED_NODES_SAVED_PREFERENCES, deleteMergedNodes);
}

Example 3 with GraphElementsController

use of org.gephi.datalab.api.GraphElementsController in project gephi by gephi.

the class DeleteEdges method execute.

@Override
public void execute() {
    if (JOptionPane.showConfirmDialog(null, NbBundle.getMessage(DeleteEdges.class, "DeleteEdges.confirmation.message"), getName(), JOptionPane.YES_NO_OPTION) == JOptionPane.YES_OPTION) {
        GraphElementsController gec = Lookup.getDefault().lookup(GraphElementsController.class);
        gec.deleteEdges(edges);
    }
}

Example 4 with GraphElementsController

use of org.gephi.datalab.api.GraphElementsController in project gephi by gephi.

the class DeleteEdgesWithNodes method execute.

@Override
public void execute() {
    GraphElementsController gec = Lookup.getDefault().lookup(GraphElementsController.class);
    gec.deleteEdgesWithNodes(edges, deleteSource, deleteTarget);
}

Example 5 with GraphElementsController

use of org.gephi.datalab.api.GraphElementsController in project gephi by gephi.

the class AttributeColumnsControllerImpl method importCSVToEdgesTable.

@Override
public void importCSVToEdgesTable(Graph graph, File file, Character separator, Charset charset, String[] columnNames, Class[] columnTypes, boolean createNewNodes) {
    if (columnNames == null || columnNames.length == 0) {
        return;
    }
    if (columnTypes == null || columnNames.length != columnTypes.length) {
        throw new IllegalArgumentException("Column names length must be the same as column types length");
    }
    CsvReader reader = null;
    graph.writeLock();
    try {
        //Prepare attribute columns for the column names, creating the not already existing columns:
        Table edgesTable = graph.getModel().getEdgeTable();
        Column weightColumn = edgesTable.getColumn("Weight");
        boolean isDynamicWeight = weightColumn.isDynamic();
        String idColumnHeader = null;
        String sourceColumnHeader = null;
        String targetColumnHeader = null;
        String typeColumnHeader = null;
        String weightColumnHeader = null;
        //Necessary because of column name case insensitivity, to map columns to its corresponding csv header.
        HashMap<Column, String> columnHeaders = new HashMap<>();
        for (int i = 0; i < columnNames.length; i++) {
            //Separate first id column found from the list to use as id. If more are found later, the will not be in the list and be ignored.
            if (columnNames[i].equalsIgnoreCase("id")) {
                if (idColumnHeader == null) {
                    idColumnHeader = columnNames[i];
                }
            } else if (columnNames[i].equalsIgnoreCase("source") && sourceColumnHeader == null) {
                //Separate first source column found from the list to use as source node id
                sourceColumnHeader = columnNames[i];
            } else if (columnNames[i].equalsIgnoreCase("target") && targetColumnHeader == null) {
                //Separate first target column found from the list to use as target node id
                targetColumnHeader = columnNames[i];
            } else if (columnNames[i].equalsIgnoreCase("type") && typeColumnHeader == null) {
                //Separate first type column found from the list to use as edge type (directed/undirected)
                typeColumnHeader = columnNames[i];
            } else if (edgesTable.hasColumn(columnNames[i])) {
                //Any other existing column:
                Column column = edgesTable.getColumn(columnNames[i]);
                columnHeaders.put(column, columnNames[i]);
                if (column.equals(weightColumn)) {
                    weightColumnHeader = columnNames[i];
                }
            } else {
                //New column:
                Column column = addAttributeColumn(edgesTable, columnNames[i], columnTypes[i]);
                if (column != null) {
                    columnHeaders.put(column, columnNames[i]);
                }
            }
        }
        Set<Column> columnList = columnHeaders.keySet();
        //Create edges:
        GraphElementsController gec = Lookup.getDefault().lookup(GraphElementsController.class);
        reader = new CsvReader(new FileInputStream(file), separator, charset);
        reader.setTrimWhitespace(false);
        reader.readHeaders();
        int recordNumber = 0;
        while (reader.readRecord()) {
            String id = null;
            Edge edge = null;
            String sourceId, targetId;
            Node source, target;
            String type;
            boolean directed;
            recordNumber++;
            sourceId = reader.get(sourceColumnHeader);
            targetId = reader.get(targetColumnHeader);
            if (sourceId == null || sourceId.trim().isEmpty() || targetId == null || targetId.trim().isEmpty()) {
                Logger.getLogger("").log(Level.WARNING, "Ignoring record number {0} due to empty source and/or target node ids", recordNumber);
                //No correct source and target ids were provided, ignore row
                continue;
            }
            source = graph.getNode(sourceId);
            if (source == null) {
                if (createNewNodes) {
                    //Create new nodes when they don't exist already and option is enabled
                    if (source == null) {
                        source = gec.createNode(null, sourceId, graph);
                    }
                } else {
                    //Ignore this edge row, since no new nodes should be created.
                    continue;
                }
            }
            target = graph.getNode(targetId);
            if (target == null) {
                if (createNewNodes) {
                    //Create new nodes when they don't exist already and option is enabled
                    if (target == null) {
                        target = gec.createNode(null, targetId, graph);
                    }
                } else {
                    //Ignore this edge row, since no new nodes should be created.
                    continue;
                }
            }
            if (typeColumnHeader != null) {
                type = reader.get(typeColumnHeader);
                //Undirected if indicated correctly, otherwise always directed:
                if (type != null) {
                    directed = !type.equalsIgnoreCase("undirected");
                } else {
                    directed = true;
                }
            } else {
                //Directed by default when not indicated
                directed = true;
            }
            //Prepare the correct edge to assign the attributes:
            if (idColumnHeader != null) {
                id = reader.get(idColumnHeader);
                if (id == null || id.trim().isEmpty()) {
                    //id null or empty, assign one
                    edge = gec.createEdge(source, target, directed);
                } else {
                    Edge edgeById = graph.getEdge(id);
                    if (edgeById == null) {
                        //Create edge because no edge with that id exists
                        edge = gec.createEdge(id, source, target, directed);
                    }
                }
            } else {
                if (findEdge(graph, null, source, target, directed) == null) {
                    //Only create if it does not exist
                    edge = gec.createEdge(source, target, directed);
                }
            }
            if (edge != null) {
                //Assign all attributes to the new edge:
                for (Column column : columnList) {
                    setAttributeValue(reader.get(columnHeaders.get(column)), edge, column);
                }
            } else {
                edge = findEdge(graph, id, source, target, directed);
                if (edge != null) {
                    //Increase non dynamic edge weight with specified weight (if specified), else increase by 1:
                    if (!isDynamicWeight) {
                        if (weightColumnHeader != null) {
                            String weight = reader.get(weightColumnHeader);
                            try {
                                Float weightFloat = Float.parseFloat(weight);
                                edge.setWeight(edge.getWeight() + weightFloat);
                            } catch (NumberFormatException numberFormatException) {
                                //Not valid weight, add 1
                                edge.setWeight(edge.getWeight() + 1);
                                Logger.getLogger("").log(Level.WARNING, "Could not parse weight {0}, adding 1", weight);
                            }
                        } else {
                            //Add 1 (weight not specified)
                            edge.setWeight(edge.getWeight() + 1);
                        }
                    }
                } else {
                    Logger.getLogger("").log(Level.WARNING, "Could not add edge [id = {0}, source = {1}, target = {2}, directed = {3}] to the graph and could not find the existing edge to add its weight. Skipping edge", new Object[] { id, source.getId(), target.getId(), directed });
                }
            }
        }
    } catch (FileNotFoundException ex) {
        Logger.getLogger("").log(Level.SEVERE, null, ex);
    } catch (IOException ex) {
        Logger.getLogger("").log(Level.SEVERE, null, ex);
    } finally {
        graph.readUnlockAll();
        graph.writeUnlock();
        if (reader != null) {
            reader.close();
        }
    }
}