/*******************************************************************************
* 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.transformation;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import edu.isi.karma.controller.command.CommandException;
import edu.isi.karma.controller.command.worksheet.AddValuesCommand;
import edu.isi.karma.controller.command.worksheet.AddValuesCommandFactory;
import edu.isi.karma.controller.command.worksheet.MultipleValueEditColumnCommand;
import edu.isi.karma.controller.command.worksheet.MultipleValueEditColumnCommandFactory;
import edu.isi.karma.controller.history.HistoryJsonUtil.ParameterType;
import edu.isi.karma.controller.update.ErrorUpdate;
import edu.isi.karma.controller.update.InfoUpdate;
import edu.isi.karma.controller.update.UpdateContainer;
import edu.isi.karma.controller.update.WorksheetUpdateFactory;
import edu.isi.karma.rep.HNode;
import edu.isi.karma.rep.HNode.HNodeType;
import edu.isi.karma.rep.HNodePath;
import edu.isi.karma.rep.Node;
import edu.isi.karma.rep.Node.NodeStatus;
import edu.isi.karma.rep.RepFactory;
import edu.isi.karma.rep.Worksheet;
import edu.isi.karma.rep.Workspace;
import edu.isi.karma.util.CommandInputJSONUtil;
import edu.isi.karma.webserver.ExecutionController;
import edu.isi.karma.webserver.KarmaException;
public abstract class MutatingPythonTransformationCommand extends
PythonTransformationCommand {
private static Logger logger = LoggerFactory.getLogger(MutatingPythonTransformationCommand.class);
protected final String newColumnName;
protected List<Node> affectedNodes = new LinkedList<>();
protected boolean isJSONOutput = false;
public MutatingPythonTransformationCommand(String id, String model, String newColumnName,
String transformationCode, String worksheetId, String hNodeId,
String errorDefaultValue, String selectionId, boolean isJSONOutput) {
super(id, model, transformationCode, worksheetId, hNodeId,
errorDefaultValue, selectionId);
this.newColumnName = newColumnName;
this.isJSONOutput = isJSONOutput;
}
@Override
public String getDescription()
{
return newColumnName;
}
protected UpdateContainer applyPythonTransformation(Workspace workspace,
Worksheet worksheet, RepFactory f, HNode hNode,
ExecutionController ctrl, String newHNodeId) {
try {
JSONArray transformedRows = new JSONArray();
JSONArray errorValues = new JSONArray();
generateTransformedValues(workspace,
worksheet, f, hNode, transformedRows, errorValues, null);
// Invoke the MultipleValueEditColumnCommand
JSONArray multiCellEditInput = getMultiCellValueEditInputJSON(transformedRows, newHNodeId);
MultipleValueEditColumnCommandFactory mfc = (MultipleValueEditColumnCommandFactory)
ctrl.getCommandFactoryMap().get(MultipleValueEditColumnCommand.class.getSimpleName());
MultipleValueEditColumnCommand mvecc = (MultipleValueEditColumnCommand) mfc.createCommand(multiCellEditInput, model, workspace);
mvecc.doIt(workspace);
} catch (Exception e) {
logger.error("Error occured during python transformation.",e);
return new UpdateContainer(new ErrorUpdate("Error occured while applying Python transformation to the column."));
}
worksheet.getMetadataContainer().getColumnMetadata().addColumnPythonTransformation(newHNodeId, this.transformationCode);
worksheet.getMetadataContainer().getColumnMetadata().addPreviousCommandId(newHNodeId, this.id);
worksheet.getMetadataContainer().getColumnMetadata().addColumnDerivedFrom(newHNodeId, hNodeId);
// Prepare the output container
UpdateContainer c = new UpdateContainer();
c.append(WorksheetUpdateFactory.createRegenerateWorksheetUpdates(worksheetId, getSuperSelection(worksheet), workspace.getContextId()));
/** Add the alignment update **/
c.append(computeAlignmentAndSemanticTypesAndCreateUpdates(workspace));
c.add(new InfoUpdate("Transformation complete"));
return c;
}
private JSONArray getMultiCellValueEditInputJSON(JSONArray rowsArray, String newHNodeId) throws JSONException {
JSONArray arr = new JSONArray();
arr.put(CommandInputJSONUtil.createJsonObject(MultipleValueEditColumnCommandFactory.Arguments.worksheetId.name(),
worksheetId, ParameterType.worksheetId));
arr.put(CommandInputJSONUtil.createJsonObject(MultipleValueEditColumnCommandFactory.Arguments.hNodeID.name(),
newHNodeId, ParameterType.worksheetId));
arr.put(CommandInputJSONUtil.createJsonObject(MultipleValueEditColumnCommandFactory.Arguments.rows.name(),
rowsArray, ParameterType.other));
return arr;
}
protected Map<String, String> gatherTransformedResults(Workspace workspace, String hNodeId) {
Map<String, String> rowToValueMapping = new HashMap<>();
HNodePath hNodePath = workspace.getFactory().getHNode(hNodeId).getHNodePath(workspace.getFactory());
List<Node> nodes = new ArrayList<>();
workspace.getWorksheet(worksheetId).getDataTable().collectNodes(hNodePath, nodes, getSuperSelection(workspace));
for (Node node : nodes) {
rowToValueMapping.put(node.getBelongsToRow().getId(), node.getValue().asString());
node.clearValue(NodeStatus.original);
affectedNodes.add(node);
}
return rowToValueMapping;
}
protected void handleJSONOutput(Workspace workspace, Map<String, String> mapping, HNode newNode) throws JSONException, KarmaException, CommandException {
String name = newNode.getColumnName();
AddValuesCommandFactory addFactory = new AddValuesCommandFactory();
for (Entry<String, String> entry : mapping.entrySet()) {
JSONArray array = new JSONArray();
JSONObject obj2 = new JSONObject();
Object obj = entry.getValue();
try {
obj = new JSONObject(entry.getValue());
}
catch(Exception e)
{}
try {
obj = new JSONArray(entry.getValue());
}
catch(Exception e)
{}
obj2.put("rowId", entry.getKey());
obj2.put("rowIdHash", "");
obj2.put("values", obj);
array.put(obj2);
JSONArray input = new JSONArray();
JSONObject obj3 = new JSONObject();
obj3.put("name", "AddValues");
obj3.put("value", array.toString());
obj3.put("type", "other");
input.put(obj3);
AddValuesCommand command = (AddValuesCommand) addFactory.createCommand(input, model, workspace, hNodeId, worksheetId, newNode.getHTableId(), name, HNodeType.Transformation, getSuperSelection(workspace).getName());
command.doIt(workspace);
}
}
}