Re: [rules-users] Accessing properties of an object within a Nested Collection of a Nested Collection

Thank you laune and manstis for the excellent / relevant information! I have a follow on question based on my findings the last couple of days using the information you have provided. I am using Drools Flow, firing the following rule in a Rules Task in my flow. Initially, I am only inserting a populated AutoManufacturer into the flow as my transport object. In the flow, I am able to access the sub-objects / collections on the parent to control flow. I prefer to keep it this way. However, it does not appear the sub-objects on the parent object are available for LHS evaluation in the rule. So, I am creating a memory entry for the automanufacturer objects and then iterating collections on the object / sub-objects to insert them as facts. This is working, however, is there not a way to do some sort of introspect on collections on the parent object instead of inserting all of the additional facts and joining them back together? Is there a better way to be doing this? Another perspective to approach this? Rule Code -------------------------------------------------------------- package com.nabble.demo import com.nabble.demo.model.Part; import com.nabble.demo.model.Brand; import com.nabble.demo.model.Model; import com.nabble.demo.model.AutoManufacturer; rule "Insert additional facts from AutoManufacturer Base Class" ruleflow-group "determineVendors" when $autoMfg : AutoManufacturer() then for(Brand brand : $autoMfg.getBrandsCollection()){ System.out.println ("Adding Brand Fact: " + brand.getBrandName()); insert(brand); for (Model model : brand.getBrandModels()) { System.out.println ("Adding Model as Fact: " + model.getModelName()); insert(model); for (Part part : model.getPartsList()) { System.out.println ("Adding Part as Fact: " + part.getPartsName()); insert(part); } } } end rule "Part Vendor = PV999999" ruleflow-group "determineVendors" when $p: Part( partVendor == "PV999999" ) $m: Model( partsList contains $p ) $b: Brand( brandModels contains $m) $a : AutoManufacturer( brandsCollection contains $b ) then System.out.println( "Manf: " +$a.getManufacturerName() + " , Brand Name: " + $b.getBrandName() + " , Brand ID: " + $b.getBrandId() + " , Model Name: " + $m.getModelName() + " , Part ID: " + $p.getPartsId()+ " , Part Name: " + $p.getPartsName()); end -- View this message in context: http://drools.46999.n3.nabble.com/Accessing-properties-of-an-object-withi... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users