/*******************************************************************************
* Copyright 2012 University of Southern California
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* This code was developed by the Information Integration Group as part
* of the Karma project at the Information Sciences Institute of the
* University of Southern California. For more information, publications,
* and related projects, please see: http://www.isi.edu/integration
******************************************************************************/
package edu.isi.karma.controller.command.alignment;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.jgrapht.graph.DirectedWeightedMultigraph;
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.command.selection.SuperSelectionManager;
import edu.isi.karma.controller.update.AlignmentSVGVisualizationUpdate;
import edu.isi.karma.controller.update.ErrorUpdate;
import edu.isi.karma.controller.update.SemanticTypesUpdate;
import edu.isi.karma.controller.update.TagsUpdate;
import edu.isi.karma.controller.update.UpdateContainer;
import edu.isi.karma.modeling.alignment.Alignment;
import edu.isi.karma.modeling.alignment.AlignmentManager;
import edu.isi.karma.rep.HNodePath;
import edu.isi.karma.rep.Worksheet;
import edu.isi.karma.rep.Workspace;
import edu.isi.karma.rep.alignment.ColumnNode;
import edu.isi.karma.rep.alignment.DefaultLink;
import edu.isi.karma.rep.alignment.LabeledLink;
import edu.isi.karma.rep.alignment.Node;
import edu.isi.karma.rep.alignment.SemanticType;
import edu.isi.karma.rep.alignment.SemanticTypes;
import edu.isi.karma.rep.metadata.TagsContainer.TagName;
public class UnassignSemanticTypeCommand extends WorksheetCommand {
private final String hNodeId;
private String columnName;
private SemanticType oldSemanticType;
private Alignment oldAlignment;
private DirectedWeightedMultigraph<Node, DefaultLink> oldGraph;
private static Logger logger = LoggerFactory
.getLogger(UnassignSemanticTypeCommand.class);
public UnassignSemanticTypeCommand(String id, String hNodeId, String worksheetId) {
super(id, worksheetId);
this.hNodeId = hNodeId;
addTag(CommandTag.Modeling);
}
@Override
public String getCommandName() {
return this.getClass().getSimpleName();
}
@Override
public String getTitle() {
return "Unassign Semantic Type";
}
@Override
public String getDescription() {
return columnName;
}
@Override
public CommandType getCommandType() {
return CommandType.undoable;
}
@SuppressWarnings("unchecked")
@Override
public UpdateContainer doIt(Workspace workspace) throws CommandException {
Worksheet worksheet = workspace.getWorksheet(worksheetId);
inputColumns.clear();
outputColumns.clear();
inputColumns.add(hNodeId);
outputColumns.add(hNodeId);
// Save the old SemanticType object for undo
SemanticTypes types = worksheet.getSemanticTypes();
oldSemanticType = types.getSemanticTypeForHNodeId(hNodeId);
types.unassignColumnSemanticType(hNodeId);
// Save the original alignment for undo
Alignment alignment = AlignmentManager.Instance().getAlignment(workspace.getId(), worksheetId);
oldAlignment = alignment.getAlignmentClone();
oldGraph = (DirectedWeightedMultigraph<Node, DefaultLink>)alignment.getGraph().clone();
// Remove it from the alignment
ColumnNode columnNode = alignment.getColumnNodeByHNodeId(hNodeId);
columnNode.setForced(false);
if (columnNode != null) {
Set<LabeledLink> links = alignment.getCurrentIncomingLinksToNode(columnNode.getId());
if(links == null)
{
logger.error("No semantic type to unassign!");
return new UpdateContainer(new ErrorUpdate("No semantic type to unassign!"));
}
LabeledLink currentLink = links.iterator().next();
// String domainNodeId = currentLink.getSource().getId();
// Remove the existing link
alignment.removeLink(currentLink.getId());
// Remove the column node
// alignment.removeNode(columnNode.getId());
// Remove the source node
// alignment.removeNode(domainNodeId);
}
if(!this.isExecutedInBatch())
alignment.align();
// Get the column name
HNodePath currentPath = null;
List<HNodePath> columnPaths = worksheet.getHeaders().getAllPaths();
for (HNodePath path : columnPaths) {
if (path.getLeaf().getId().equals(hNodeId)) {
currentPath = path;
columnName = path.getLeaf().getColumnName();
break;
}
}
// Remove the nodes (if any) from the outlier tag
Collection<edu.isi.karma.rep.Node> nodes = new ArrayList<edu.isi.karma.rep.Node>();
//TODO What does that mean?
worksheet.getDataTable().collectNodes(currentPath, nodes, SuperSelectionManager.DEFAULT_SELECTION);
Set<String> nodeIds = new HashSet<String>();
for (edu.isi.karma.rep.Node node : nodes) {
nodeIds.add(node.getId());
}
workspace.getTagsContainer().getTag(TagName.Outlier)
.removeNodeIds(nodeIds);
// Update the container
UpdateContainer c = new UpdateContainer();
c.add(new SemanticTypesUpdate(worksheet, worksheetId, alignment));
// Add the alignment update
try {
c.add(new AlignmentSVGVisualizationUpdate(worksheetId, alignment));
} catch (Exception e) {
logger.error("Error occured while unassigning the semantic type!",e);
return new UpdateContainer(new ErrorUpdate("Error occured while unassigning the semantic type!"));
}
c.add(new TagsUpdate());
return c;
}
@Override
public UpdateContainer undoIt(Workspace workspace) {
Worksheet worksheet = workspace.getWorksheet(worksheetId);
// Add the old SemanticType object if it is not null
SemanticTypes types = worksheet.getSemanticTypes();
if (oldSemanticType != null)
types.addType(oldSemanticType);
// Update the container
UpdateContainer c = new UpdateContainer();
// Update with old alignment
String alignmentId = AlignmentManager.Instance().constructAlignmentId(workspace.getId(), worksheetId);
AlignmentManager.Instance().addAlignmentToMap(alignmentId, oldAlignment);
oldAlignment.setGraph(oldGraph);
try {
c.add(new SemanticTypesUpdate(worksheet, worksheetId, oldAlignment));
c.add(new AlignmentSVGVisualizationUpdate(worksheetId, oldAlignment));
} catch (Exception e) {
logger.error("Error occured during undo of unassigning the semantic type!", e);
return new UpdateContainer(new ErrorUpdate("Error occured during undo of unassigning the semantic type!"));
}
return c;
}
}