package edu.isi.karma.controller.command.alignment;
import org.jgrapht.graph.DirectedWeightedMultigraph;
import org.json.JSONException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import edu.isi.karma.controller.command.CommandException;
import edu.isi.karma.controller.command.CommandType;
import edu.isi.karma.controller.command.WorksheetCommand;
import edu.isi.karma.controller.update.UpdateContainer;
import edu.isi.karma.controller.update.WorksheetUpdateFactory;
import edu.isi.karma.modeling.alignment.Alignment;
import edu.isi.karma.modeling.alignment.AlignmentManager;
import edu.isi.karma.rep.Workspace;
import edu.isi.karma.rep.alignment.DefaultLink;
import edu.isi.karma.rep.alignment.Label;
import edu.isi.karma.rep.alignment.Node;
/**
* Force Add a Node. This node need not be connected to anything in the Steiner Tree.
* This is used for top-down modeling.
* Nodes added using this command can be removed using the DeleteNodeCommand
* @author dipsy
*
*/
public class AddNodeCommand extends WorksheetCommand {
private String nodeUri;
private String nodeLabel;
private String alignmentId;
private static Logger logger = LoggerFactory.getLogger(AddNodeCommand.class);
// Required for undo
private Alignment oldAlignment;
private DirectedWeightedMultigraph<Node, DefaultLink> oldGraph;
protected AddNodeCommand(String id, String worksheetId, String alignmentId, String uri, String label) {
super(id, worksheetId);
this.alignmentId = alignmentId;
this.nodeUri = uri;
this.nodeLabel = label;
addTag(CommandTag.Modeling);
}
@Override
public String getCommandName() {
return this.getClass().getSimpleName();
}
@Override
public String getTitle() {
return "Add Node";
}
@Override
public String getDescription() {
return nodeLabel;
}
@Override
public CommandType getCommandType() {
return CommandType.undoable;
}
@SuppressWarnings("unchecked")
@Override
public UpdateContainer doIt(Workspace workspace) throws CommandException {
logCommand(logger, workspace);
Alignment alignment = AlignmentManager.Instance().getAlignment(
alignmentId);
// Save the original alignment for undo
oldAlignment = alignment.getAlignmentClone();
oldGraph = (DirectedWeightedMultigraph<Node, DefaultLink>) alignment
.getGraph().clone();
try {
alignment.addForcedInternalNode(new Label(nodeUri));
if(!this.isExecutedInBatch())
alignment.align();
} catch (JSONException e) {
logger.error("Error adding Internal Node:" , e);
}
return WorksheetUpdateFactory.createSemanticTypesAndSVGAlignmentUpdates(worksheetId, workspace, alignment);
}
@Override
public UpdateContainer undoIt(Workspace workspace) {
// Revert to the old alignment
AlignmentManager.Instance()
.addAlignmentToMap(alignmentId, oldAlignment);
oldAlignment.setGraph(oldGraph);
// Get the alignment update
return WorksheetUpdateFactory.createSemanticTypesAndSVGAlignmentUpdates(worksheetId, workspace, oldAlignment);
}
}