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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
package org.apache.tuscany.sca.diagram.layout;
import org.apache.tuscany.sca.diagram.artifacts.Constant;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
public class EntityBuilder {
private Document dom;
private int totalWidth = 0;
private int totalHeight = 0;
private CompositeEntity composite = null;
/**
* Constructor which initiates the DOM document
* @param aDom DOM document
*/
public EntityBuilder(Document aDom) {
dom = aDom;
}
public CompositeEntity buildCompositeEntity() {
//get the root element
Element docEle = dom.getDocumentElement();
String compositeName;
compositeName = docEle.getAttribute("name");
//System.out.println("compositeName "+compositeName);
ComponentEntity[] comps = buildComponentEntities(docEle);
composite = new CompositeEntity(compositeName);
setParent(comps);
//System.out.println("ComponentEntity "+comps[0].getLevel());
int[][] conns = buildConnectionMatrix(comps);
composite.setComponentList(comps);
composite.setConnections(conns);
LayoutBuilder buildLayout = new LayoutBuilder(comps, conns, Constant.MAX_LEVELS);
buildLayout.placeEntities();
composite.setHeight(buildLayout.getTotalHeight());
composite.setWidth(buildLayout.getTotalWidth());
composite.setMaxInternalLane(buildLayout.getTotalLane());
composite.setMaxInternalLevel(buildLayout.getTotalLevel());
//System.out.println("conns "+conns[0][0]);
buildCompositeService(docEle);
buildCompositeReference(docEle);
buildCompositeProperty(docEle);
addInclusions(docEle);
composite.build();
return composite;
}
// private void assignCoordinates() {
//
// for(Entity ent: elts){
// ent.setX(ent.getParent().getX() + ent.getStartPosition());
// ent.setY(ent.getParent().getY() + ent.getStartPosition()/2);
// }
// }
private void setParent(ComponentEntity[] comps) {
for (ComponentEntity comp : comps) {
comp.setParent(composite);
}
}
private void buildCompositeService(Element docEle) {
NodeList nl = docEle.getElementsByTagName("service");
//System.err.println("^^^^^^^^^ "+nl.getLength());
if (nl != null && nl.getLength() > 0) {
for (int i = 0; i < nl.getLength(); i++) {
Element elt = (Element)nl.item(i);
if (elt.getParentNode().getNodeName().equals("composite")) {
String compositeSer = elt.getAttribute("name");
composite.addAService(compositeSer);
String target = elt.getAttribute("promote");
String service, serviceComp;
String[] arr1 = extractComp(target);
serviceComp = arr1[0];
service = arr1[1];
if (service == null) {
composite.addToPromoteAService(compositeSer, serviceComp);
} else {
composite.addToPromoteAService(compositeSer, serviceComp + "/" + service);
}
}
}
}
}
private void buildCompositeReference(Element docEle) {
NodeList nl = docEle.getElementsByTagName("reference");
//System.out.println("^^^^^^^^^ "+nl.getLength());
if (nl != null && nl.getLength() > 0) {
for (int i = 0; i < nl.getLength(); i++) {
Element elt = (Element)nl.item(i);
if (elt.getParentNode().getNodeName().equals("composite")) {
String compositeRef = elt.getAttribute("name");
composite.addAReference(compositeRef);
String targetStr = elt.getAttribute("promote");
String[] targets = targetStr.split(" ");
for (String target : targets) {
String reference, referenceComp;
String[] arr1 = extractComp(target);
referenceComp = arr1[0];
reference = arr1[1];
if (reference == null) {
composite.addToPromoteAReference(compositeRef, referenceComp);
} else {
composite.addToPromoteAReference(compositeRef, referenceComp + "/" + reference);
}
}
}
}
}
}
private void buildCompositeProperty(Element docEle) {
NodeList nl = docEle.getElementsByTagName("property");
//System.out.println("^^^^^^^^^ "+nl.getLength());
if (nl != null && nl.getLength() > 0) {
for (int i = 0; i < nl.getLength(); i++) {
Element elt = (Element)nl.item(i);
if (elt.getParentNode().getNodeName().equals("composite")) {
String compositeProp = elt.getAttribute("name");
composite.addAProperty(compositeProp);
}
}
}
}
private void addInclusions(Element docEle) {
NodeList nl = docEle.getElementsByTagName("include");
//System.out.println("^^^^^^^^^ "+nl.getLength());
if (nl != null && nl.getLength() > 0) {
for (int i = 0; i < nl.getLength(); i++) {
Element elt = (Element)nl.item(i);
if (elt.getParentNode().getNodeName().equals("composite")) {
String compToBeIncluded = elt.getAttribute("name");
composite.addToIncludedComposites(compToBeIncluded);
}
}
}
}
private int[][] buildConnectionMatrix(ComponentEntity[] comps) {
int[][] connections = new int[comps.length][comps.length];
connections = initConnections(connections);
for (Entity ent : comps) {
for (String name : ent.getAdjacentEntities()) {
ComponentEntity e2 = findEntity(comps, name);
if (ent != null && e2 != null) {
//System.out.println("^^^^^^^^^ "+e2.getName());
connections[ent.getId()][e2.getId()] = 1;
}
}
}
return connections;
}
private String[] extractComp(String str) {
String[] arr = new String[2];
if (str.contains("/")) {
arr = str.split("/");
} else {
arr[0] = str;
arr[1] = null;
}
return arr;
}
private int[][] initConnections(int[][] connections) {
for (int i = 0; i < connections.length; i++) {
for (int j = 0; j < connections.length; j++) {
connections[i][j] = 0;
}
}
return connections;
}
public ComponentEntity[] buildComponentEntities(Element docEle) {
ComponentEntity[] elts = null;
// //get the root element
// Element docEle = dom.getDocumentElement();
// compositeName = docEle.getAttribute("name");
// System.out.println("compositeName "+compositeName);
//get a nodelist of elements
NodeList nl = docEle.getElementsByTagName("component");
if (nl != null && nl.getLength() > 0) {
elts = new ComponentEntity[nl.getLength()];
for (int i = 0; i < nl.getLength(); i++) {
elts[i] = new ComponentEntity();
Element nVal = (Element)nl.item(i);
//System.out.println(nVal.hasAttribute("name"));
elts[i].setId(i);
elts[i].setName(nVal.getAttribute("name"));
setImplementation(nVal, elts[i]);
setServices(nVal, elts[i]);
setReferences(nVal, elts[i]);
setProperties(nVal, elts[i]);
elts[i].build();
}
}
buildWires(docEle, elts);
// //sec. 5.4 in the spec
// nl = docEle.getElementsByTagName("wire");
// System.out.println("^^^^^^^^^ "+nl.getLength());
// if(nl != null && nl.getLength() > 0 ) {
// for(int i = 0 ; i < nl.getLength();i++) {
// Element elt = (Element)nl.item(i);
// String source = elt.getAttribute("source");
// String target = elt.getAttribute("target");
// String service, serviceComp, reference, referenceComp;
//
// System.out.println("^^^^^^^^^ "+source+" ::: "+target);
// if(target.contains("/")){
// String[] arr = target.split("/");
// serviceComp = arr[0];
// service = arr[1];
// }
// else{
// serviceComp = target;
// service = null;
// }
//
// if(source.contains("/")){
// String[] arr = source.split("/");
// referenceComp = arr[0];
// reference = arr[1];
// }
// else{
// referenceComp = source;
// reference = null;
// }
//
// ComponentEntity e = findEntity(referenceComp);
// System.out.println("^^^^^^^^^ "+e.getName());
// if(e != null){
// createConnection(e, reference, serviceComp, service);
// }
// }
// }
//
// positionEntities(elts);
//
// calculateProperties(elts);
// print(elts);
return elts;
}
private void buildWires(Element docEle, ComponentEntity[] elts) {
//sec. 5.4 in the spec
NodeList nl = docEle.getElementsByTagName("wire");
//System.out.println("^^^^^^^^^ "+nl.getLength());
if (nl != null && nl.getLength() > 0) {
for (int i = 0; i < nl.getLength(); i++) {
Element elt = (Element)nl.item(i);
String source = elt.getAttribute("source");
String target = elt.getAttribute("target");
String service, serviceComp, reference, referenceComp;
String[] arr1 = extractComp(target);
serviceComp = arr1[0];
service = arr1[1];
String[] arr2 = extractComp(source);
referenceComp = arr2[0];
reference = arr2[1];
// //System.out.println("^^^^^^^^^ "+source+" ::: "+target);
// if(target.contains("/")){
// String[] arr = target.split("/");
// serviceComp = arr[0];
// service = arr[1];
// }
// else{
// serviceComp = target;
// service = null;
// }
//
// if(source.contains("/")){
// String[] arr = source.split("/");
// referenceComp = arr[0];
// reference = arr[1];
// }
// else{
// referenceComp = source;
// reference = null;
// }
//
ComponentEntity e1 = findEntity(elts, referenceComp);
//ComponentEntity e2 = findEntity(comps, serviceComp);
//System.out.println("^^^^^^^^^ "+e1.getName());
if (e1 != null) {
//System.out.println("^^^^^^^^^ "+e1.getId());
//connections[e1.getId()][e2.getId()] = 1;
createConnection(e1, reference, serviceComp, service);
}
}
}
}
private ComponentEntity findEntity(ComponentEntity[] elts, String componentName) {
for (ComponentEntity e : elts) {
if (e.getName().equals(componentName)) {
return e;
}
}
return null;
}
private void setReferences(Element nVal, ComponentEntity ent) {
NodeList nl = nVal.getElementsByTagName("reference");
if (nl != null && nl.getLength() > 0) {
for (int i = 0; i < nl.getLength(); i++) {
Element elt = (Element)nl.item(i);
String target = elt.getAttribute("target");
String ref = elt.getAttribute("name");
if (target.contains("/")) {
String[] arr = target.split("/");
createConnection(ent, ref, arr[0], arr[1]);
// ent.addToRefToSerMap(ref, arr[1]);
// ent.addAnAdjacentEntity(arr[0]);
// addToConnectedEntities(ent.getComponentName(), arr[0]);
// addToConnectedEntities(arr[0], ent.getComponentName());
} else if (!target.equals("")) {
createConnection(ent, ref, target, null);
// ent.addToRefToSerMap(ref, target);
// ent.addAnAdjacentEntity(target);
// addToConnectedEntities(ent.getComponentName(), target);
// addToConnectedEntities(target, ent.getComponentName());
}
ent.addAReference(ref);
}
}
}
private void createConnection(ComponentEntity ent, String reference, String serviceComp, String service) {
String referenceComp = ent.getName();
if (reference != null && service != null) {
ent.addToRefToSerMap(reference, serviceComp + "/" + service);
ent.addAnAdjacentEntity(serviceComp);
} else if (reference == null && service != null) {
ent.addToRefToSerMap(referenceComp, serviceComp + "/" + service);
ent.addAnAdjacentEntity(serviceComp);
} else if (reference != null && service == null) {
ent.addToRefToSerMap(reference, serviceComp);
ent.addAnAdjacentEntity(serviceComp);
} else {
ent.addToRefToSerMap(referenceComp, serviceComp);
ent.addAnAdjacentEntity(serviceComp);
}
}
@SuppressWarnings("unused")
private void print(ComponentEntity[] elts) {
for (ComponentEntity ent : elts) {
System.out.println(ent.getName() + " : "
+ ent.getLevel()
+ " : "
+ ent.getLane()
+ " : "
+ ent.getX()
+ " : "
+ ent.getY());
}
}
private void setServices(Element nVal, ComponentEntity ent) {
NodeList nl = nVal.getElementsByTagName("service");
if (nl != null && nl.getLength() > 0) {
for (int i = 0; i < nl.getLength(); i++) {
Element elt = (Element)nl.item(i);
ent.addAService(elt.getAttribute("name"));
}
} else {
NodeList nl1 = nVal.getElementsByTagName("implementation.java");
if (nl1 != null && nl1.getLength() > 0) {
for (int i = 0; i < nl1.getLength(); i++) {
Element elt = (Element)nl1.item(i);
//System.out.println(elt.getAttribute("class"));
String serName = extractServiceName(elt.getAttribute("class"));
ent.addAService(serName);
}
}
}
}
private void setImplementation(Element nVal, ComponentEntity ent) {
NodeList nodes = nVal.getChildNodes();
for (int i = 0; i < nodes.getLength(); i++) {
if (nodes.item(i) instanceof Element) {
Element elt = (Element)nodes.item(i);
String name = elt.getNodeName();
if (name != null && name.contains(":")) {
name = name.substring(name.indexOf(':') + 1).trim();
}
if (name != null && name.startsWith("implementation.")) {
String type = name.substring("implementation.".length());
if ("implementation.java".equals(name)) {
String cls = elt.getAttribute("class");
ent.setImplementation(type + ":" + extractClassName(cls));
} else {
ent.setImplementation(type);
}
break;
}
}
}
}
private String extractClassName(String classAttr) {
if (classAttr == null) {
return "";
} else {
int index = classAttr.lastIndexOf('.');
return classAttr.substring(index + 1);
}
}
/**
*
* This will extract the service name part from the class attribute of
* implementation.java element.
* eg: if class = "NirmalServiceImpl", returning service name would be "NirmalService"
*/
private String extractServiceName(String classAttr) {
if (classAttr != null) {
String[] x = classAttr.split("\\.");
String name = x[x.length - 1];
if (name.endsWith("Impl")) {
return name.substring(0, name.length() - 4);
} else {
return name;
}
}
return "";
}
private void setProperties(Element nVal, ComponentEntity ent) {
NodeList nl = nVal.getElementsByTagName("property");
if (nl != null && nl.getLength() > 0) {
for (int i = 0; i < nl.getLength(); i++) {
Element elt = (Element)nl.item(i);
ent.addAProperty(elt.getAttribute("name"));
}
}
}
// public void setCompositeName(String compositeName) {
// this.compositeName = compositeName;
// }
//
// public String getCompositeName() {
// return compositeName;
// }
public int getTotalWidth() {
return totalWidth;
}
public int getTotalHeight() {
return totalHeight;
}
}
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