/**
* Copyright (c) 2009, Ole Eckermann, Stefan Krumnow & Signavio GmbH
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package com.signavio.warehouse.business.util.jpdl4;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.apache.commons.lang.StringEscapeUtils;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
public class JsonToJpdl {
private static JsonToJpdl instance = null;
private HashMap<String, JSONObject> children;
private Set<String> uniqueNames;
private JSONObject processData;
public static JsonToJpdl getInstance() {
return instance;
}
public static JsonToJpdl createInstance(JSONObject process) {
instance = new JsonToJpdl(process);
return instance;
}
private JsonToJpdl(JSONObject process) {
this.processData = process;
uniqueNames = new HashSet<String>();
this.children = new HashMap<String, JSONObject>();
try {
JSONArray processElements = process.getJSONArray("childShapes");
// Collect all children for direct access
for (int i = 0; i < processElements.length(); i++) {
JSONObject currentElement = processElements.getJSONObject(i);
String name = currentElement.getJSONObject("properties").getString("name");
if (name.length() == 0 || uniqueNames.contains(name)) {
String newName = name;
String type = currentElement.getJSONObject("stencil").getString("id");
do {
newName = createName(newName, type);
} while (uniqueNames.contains(newName));
uniqueNames.add(newName);
currentElement.getJSONObject("properties").put("name", newName);
} else {
uniqueNames.add(name);
}
this.children.put(currentElement.getString("resourceId"),
currentElement);
}
} catch (JSONException e) {
}
}
private String createName(String name, String type) {
if (name.length() == 0) {
return (type == null || type.length() == 0) ? "element_1" : type + "_1";
} else {
if (name.contains("_")) {
String prefix = name.substring(0, name.lastIndexOf("_"));
String suffix = name.substring(name.lastIndexOf("_") + 1);
try {
int i = Integer.parseInt(suffix);
return prefix + "_" + (i+1);
} catch (NumberFormatException e) {
return name + "_1";
}
} else {
return name + "_1";
}
}
}
public String transform() throws InvalidModelException {
// trigger for transformation
// Check if model is of type BPMN 1.2 + jBPM OR of the jbpm4 stencilsset
boolean start = false;
try {
String ns = this.processData.getJSONObject("stencilset").getString("namespace");
start = ns.equals("http://b3mn.org/stencilset/jbpm4#");
} catch (JSONException e) {
// nothing
}
try {
JSONArray extensions = this.processData.getJSONArray("ssextensions");
for (int i = 0; i < extensions.length(); i++){
if (extensions.getString(i).equals("http://oryx-editor.org/stencilsets/extensions/jbpm#")) {
start = true;
}
}
} catch (JSONException e) {
// nothing
}
if (start) {
Process process = new Process(this.processData);
return process.toJpdl();
} else {
throw new InvalidModelException("Invalid model type. BPMN 1.2 with jBPM extension is required.");
}
}
public static String transformAttribute(String name, String value) {
if (value == null)
return "";
if (value.equals(""))
return "";
value = StringEscapeUtils.escapeXml(value);
StringWriter jpdl = new StringWriter();
jpdl.write(" ");
jpdl.write(name);
jpdl.write("=\"");
jpdl.write(value);
jpdl.write("\"");
return jpdl.toString();
}
public static String transformRequieredAttribute(String name, String value)
throws InvalidModelException {
if (value == null)
throw new InvalidModelException("Attribute " + name
+ " is missing.");
value = StringEscapeUtils.escapeXml(value);
StringWriter jpdl = new StringWriter();
jpdl.write(" ");
jpdl.write(name);
jpdl.write("=\"");
jpdl.write(value);
jpdl.write("\"");
return jpdl.toString();
}
public static String getAttribute(JSONObject node, String name) {
try {
return node.getJSONObject("properties").optString(name);
} catch (JSONException e) {
return null;
}
}
public static Bounds getBounds(JSONObject node) {
try {
return new Bounds(node.getJSONObject("bounds"));
} catch (JSONException e) {
return null;
}
}
public static List<Transition> getOutgoings(JSONObject node) {
List<Transition> outgoings = new ArrayList<Transition>();
try {
JSONArray outs = node.getJSONArray("outgoing");
for (int i = 0; i < outs.length(); i++) {
String id = outs.getJSONObject(i).getString("resourceId");
JSONObject out = JsonToJpdl.getInstance().getChild(id);
outgoings.add(new Transition(out));
}
} catch (JSONException e) {
}
return outgoings;
}
public String getTargetName(String targetId) {
JSONObject target = children.get(targetId);
try {
String name = target.getJSONObject("properties").getString("name");
return name;
} catch (JSONException e) {
return null;
}
}
public JSONObject getChild(String childId) {
return children.get(childId);
}
}