Area value retrieval - IfcOpeningElement

Edit Subject

Dear Ruben de Laat ,

Thank you so much for the RelDefines relationship which i was missing. I was unable to figure out the getIsDefinedBy method.

Please clarify the following in the same code you have written.

I separately loaded IfcElementQuantity like
List qty = model.getAll(IfcElementQuantity.class);
out.println("element qty size is "+qty.size());

It is printing as 6.

Trying the following, if (relatingPropertyDefinition instanceof IfcElementQuantity)

No element quantity detected, code does not enter this if loop.

Kindly please help me if i am doing anything wrong obviously.

This is being used for a research program and i am in a situation to get it done for favorable results. Thank you very very much in advance.

package org.bimserver.querycompiler;

import java.io.PrintWriter;
import org.bimserver.ifc.database.IfcDatabase;
import java.util.*;
import java.util.ArrayList;
import java.util.Iterator;
import org.bimserver.ifc.emf.Ifc2x3.*;

public class Query implements QueryInterface {

private IfcDatabase model;
private PrintWriter out;

@Override
public void query(IfcDatabase model, PrintWriter out) {

List qty = model.getAll(IfcElementQuantity.class);
out.println("element qty size is "+qty.size());

List stories = model.getAll(IfcBuildingStorey.class);
List Opening_subjectToArea = new ArrayList();

if(!(stories.isEmpty())){
for (IfcBuildingStorey storey : stories) {
for (IfcRelContainedInSpatialStructure rel : storey.getContainsElements()) {
for (IfcProduct product : rel.getRelatedElements()) {
if (product instanceof IfcSlab) {
IfcSlab tempSlab = (IfcSlab)product;
IfcElement ifcslabElement = (IfcElement)tempSlab;
for(IfcRelVoidsElement relVoids : ifcslabElement.getHasOpenings()){
Opening_subjectToArea.add(relVoids.getRelatedOpeningElement());
out.println("here 0");
}
}
}
}
}
}
else{out.println("Building stories not available...");}

if(!(Opening_subjectToArea.isEmpty())){
Iterator OE_it = Opening_subjectToArea.iterator();
while(OE_it.hasNext()){
IfcOpeningElement openingElement = (IfcOpeningElement)OE_it.next();
for (IfcRelDefines defines : openingElement.getIsDefinedBy()) {
if (defines instanceof IfcRelDefinesByProperties) {
IfcRelDefinesByProperties definesByProperties = (IfcRelDefinesByProperties)defines;
IfcPropertySetDefinition relatingPropertyDefinition = definesByProperties.getRelatingPropertyDefinition();
Iterator qit = qty.iterator();
while(qit.hasNext()){
qit.next();
out.println("running");
//if(qit.next() == (IfcElementQuantity)relatingPropertyDefinition){out.println("exist");}
//else{out.println("running");}
}
if (relatingPropertyDefinition instanceof IfcElementQuantity) {
out.println("here 4");
IfcElementQuantity elementQuantity = (IfcElementQuantity)relatingPropertyDefinition;
for (IfcPhysicalQuantity physicalQuantity : elementQuantity.getQuantities()) {
if (physicalQuantity instanceof IfcQuantityArea) {

IfcQuantityArea area = (IfcQuantityArea)physicalQuantity;
float areaValue = area.getAreaValue();
out.println("Area value : "+areaValue);
}
}
}
}
}
}
}
else{out.println("No match for Opening element incorporated to slab");}
}
}

Thank you!