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package org.apache.tuscany.sca.impl.layout;
import java.util.ArrayList;
import java.util.HashMap;
import org.apache.tuscany.sca.impl.artifacts.Component;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
public class EntityBuilder {
private Document dom;
private final int initPoint = 100;//initial point
private final int spaceX = Component.DEFAULT_WIDTH*2;
private final int spaceY = Component.DEFAULT_HEIGHT*2;
private ArrayList<Integer> levelCount = new ArrayList<Integer>();//keeps track of levels used in lanes
private HashMap<String, ArrayList<String>> connectedEntities = new HashMap<String, ArrayList<String>>();
private int totalWidth=0;
private int totalHeight=0;
private Entity startEnt = null;
private String compositeName;
public EntityBuilder(Document aDom){
dom = aDom;
}
public Entity[] buildEntities(){
Entity[] 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 Entity[nl.getLength()];
for(int i = 0 ; i < nl.getLength();i++) {
elts[i] = new Entity();
Element nVal = (Element)nl.item(i);
//System.out.println(nVal.hasAttribute("name"));
elts[i].setComponentName(nVal.getAttribute("name"));
setServices(nVal, elts[i]);
setReferences(nVal, elts[i]);
setProperties(nVal, elts[i]);
elts[i].referenceHeight();
elts[i].serviceHeight();
elts[i].propertyLength();
}
}
positionEntities(elts);
calculateProperties(elts);
print(elts);
return elts;
}
private void calculateProperties(Entity[] elts) {
int level=0, lane=0;
for(Entity ent: elts){
level = max(level, ent.getLevel());
lane = max(lane, ent.getLane());
}
totalHeight += spaceY*(level+1) + initPoint;
totalWidth += spaceX*(lane+1) + initPoint;
System.err.println(totalHeight + " :: "+totalWidth);
}
private int max(int a, int b){
if(a>=b)
return a;
return b;
}
private void print(Entity[] elts) {
for(Entity ent: elts){
System.out.println(ent.getComponentName()+" : "+ent.getLevel()+" : "
+ent.getLane()+" : "+ent.getX()+" : "+ent.getY());
}
}
private void positionEntities(Entity[] ents){
for(Entity ent: ents){
if(ent.getAdjacentEntities().size() != 0 || ents.length==1){
setPosition(ent, initPoint, initPoint, 0, 0);
levelCount.add(0, 1);
startEnt = ent;
System.err.println(ent.getComponentName());
break;
}
}
if(startEnt != null)
assignPositions(ents, startEnt);
}
private void assignPositions(Entity[] ents, Entity ent){
int i=0;
if(ent.getAdjacentEntities().size()>0){
System.out.println(ent.getComponentName());
for(String name: ent.getAdjacentEntities()){
//System.out.println("eee "+name);
for(Entity aEnt: ents){
i++;
if(name.equalsIgnoreCase(aEnt.getComponentName())){
int lane = ent.getLane()+1;
if(levelCount.size()<= lane){
levelCount.add(lane, 1);
setPosition(aEnt, ent.getX()+spaceX, ent.getY(), 0, lane);
}
else{
int level = levelCount.get(lane);
levelCount.add(lane, level+1);
setPosition(aEnt, ent.getX()+spaceX, ent.getY()+spaceY*level, level, lane);
}
if(i<ents.length)
assignPositions(ents, aEnt);
break;
}
}
}
}
else{
ArrayList<String> conns = connectedEntities.get(ent.getComponentName());
System.err.println(conns.size());
if(conns.size()>0){
for(String conn: conns){
System.err.println("conn "+conn +" : "+ent.getComponentName());
for(Entity e: ents){
if(e.getLane() == -1 && e.getComponentName().equals(conn)){
int lane = ent.getLane()-1;
System.err.println(lane);
int level = levelCount.get(lane);
levelCount.add(lane, level+1);
setPosition(e, ent.getX()-spaceX, ent.getY()+spaceY*level, level, lane);
break;
}
}
}
}
}
}
private void setPosition(Entity ent, int x, int y, int level, int lane){
ent.setX(x);
ent.setY(y);
ent.setLevel(level);
ent.setLane(lane);
}
private String[] splitValues(String str){
return str.split("/");
}
private void setReferences(Element nVal, Entity 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("/")){
ent.addToRefToSerMap(ref, target.split("/")[1]);
ent.addAnAdjacentEntity(target.split("/")[0]);
addToConnectedEntities(ent.getComponentName(), target.split("/")[0]);
addToConnectedEntities(target.split("/")[0], ent.getComponentName());
}
else if(!target.equals("")){
ent.addToRefToSerMap(ref, target);
ent.addAnAdjacentEntity(target);
addToConnectedEntities(ent.getComponentName(), target);
addToConnectedEntities(target, ent.getComponentName());
}
ent.addAReference(ref);
}
}
}
private void addToConnectedEntities(String ent1, String ent2) {
System.err.println(ent1+" : "+ent2);
ArrayList<String> list;
if(connectedEntities.containsKey(ent1)){
list = connectedEntities.get(ent1);
}
else{
list =new ArrayList<String>();
}
list.add(ent2);
connectedEntities.put(ent1, list);
}
private void setServices(Element nVal, Entity 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"));
}
}
}
private void setProperties(Element nVal, Entity 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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