Deep search

Question

Hi,
I'm trying to proceed a pretty complicated search. Here's the structure of my custom architecture ; all these are PublicObject Instances,and they all extend the 'Document' Class :
class Po3 with a single String-type attribute : 'bob'
class Po2 with an Po3-type array attribute : 'po3Array'
class Po1 with an Po2-type array attribute : 'po2Array'
All I'm trying to do is to retrieve all Po1 objects with 'bob'attribute matching a certain value.
Following this post advice :
Re: Advance search
I made some Relationship objects during the creation of each of my custom objects. So, each object is left-related in a Relationship as many times as the size of its array attribute.
But when I'm trying to use all this stuff within JointureQualifications (for Relationship )and AttributeQualification (for the 'bob' value), the SearchResultObject returned is always empty...The SQL query may look like this :
SELECT Po1
FROM Po1,Po2,Po3,Relationship
WHERE
     (Po1.id=Relationship.leftobject)
     AND
     (Relationship.rightobject=Po2.id)
     AND
     (Po2.id=Relationship.leftobject)
     AND
     (Relationship.rightobject=Po3.id)
     AND
     Po3.bob="myString"
Here's the code I'm using to build such a Search object:
Search s=null;
try
          SearchClassSpecification classSpec = new SearchClassSpecification();
          //Setting up the FROM Classes
          classSpec.addSearchClass(Po1");
          classSpec.addSearchClass("Po2");
          classSpec.addSearchClass("Po3");
          classSpec.addSearchClass("Relationship");
          //Setting up the SELECT Class
          classSpec.addResultClass("Po1");
          //Setting up the SORT specification
          SearchSortSpecification sortSpec = new SearchSortSpecification();
          sortSpec.add(PublicObject.CREATEDATE_ATTRIBUTE,true);
          //Creation of the Relation between Po1 and Po2
          JoinQualification jq1 = new JoinQualification();
          jq1.setLeftAttribute("Po1",null);
          jq1.setRightAttribute("Relationship","LEFTOBJECT");
          JoinQualification jq2 = new JoinQualification();
          jq2.setLeftAttribute("Relationship","RIGHTOBJECT");
          jq2.setRightAttribute("Po2",null);
          SearchClause sc2=new SearchClause(jq1,jq2,SearchClause.AND);
          //Creation of the Relation between Po2 and Po3
          JoinQualification jq3 = new JoinQualification();
          jq3.setLeftAttribute("Po2",null);
          jq3.setRightAttribute("Relationship","LEFTOBJECT");
          JoinQualification jq4 = new JoinQualification();
          jq4.setLeftAttribute("Relationship","RIGHTOBJECT");
          jq4.setRightAttribute("Po3",null);
          SearchClause sc3=new SearchClause(jq3,jq4,SearchClause.AND);
          //Condition for Po3's 'bob' attribute
          AttributeQualification aq1=new AttributeQualification();
          aq1.setAttribute("Po3","NIMP");
          aq1.setOperatorType(AttributeQualification.LIKE);
          aq1.setValue(AttributeValue.newAttributeValue("%alpha%"));
          SearchClause sc4=new SearchClause(sc2,sc3,SearchClause.AND);
          SearchClause finalSc= new SearchClause(sc4,aq1,SearchClause.AND);
          AttributeSearchSpecification sp=new AttributeSearchSpecification();
          sp.setSearchClassSpecification(classSpec);
          s = new Search(ifsSession,sp);
catch(Exception e)
If anyone has an idea to improve my code, or even another completly different method, please tell me. Of course I could recursively use the 'getter' methods of each object, but in fact my architecture has a real attribute depth of seven consecutive arrays, and I'm afraid this would be dramatically slow...
Thanks

Answer 1

I'm afraid I haven't been clear enough in my previous post...
My purpose is to get all PO1 objects whose 'bob' attribute matches a certain value. I must mention that the technique I explained in the other post works well with only a depth of two, ie I can retrieve all Po2 objects with a given 'bob' in Po3.
The previous code doesn't work at all with 3 levels of depth (ie PO1, PO2 and PO3).
How could I do to make this kind of search ???
Thanks