How to pass any type of objects into Portal's rules engine?

Question

Is that possible to pass any type of objects into Portal's rules engine? Or BEA's Portal service rules engine can only allow to pass a limited number of objects?
Are there any information about BEA's rules engine? and Can we use its rules engine without using its Portal service?
Thank you.

Answer 1

I worked on BEA rules engine 4 months back. I'm sure you can pass any JAVA object to it's working meomory. I am giving my sample rules here, hope it will be helpful for you.
I just replace pcakage name, other than that everything is from wroking project. Open in xml spy, it should be clear from the desc. If you have any questions post back.
<cr:rule-set is-complete="true" xmlns="http://www.bea.com/servers/p13n/xsd/expression/expressions/2.1.1" xmlns:cr="http://www.bea.com/servers/p13n/xsd/rules/core/2.1.1" xmlns:literal="http://www.bea.com/servers/p13n/xsd/expression/literal/1.0.1" xmlns:string="http://www.bea.com/servers/p13n/xsd/expression/string/1.0.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.bea.com/servers/p13n/xsd/rules/core/2.1.1 rules-core-2_1_1.xsd">
     <cr:rule is-complete="true">
          <cr:name>TaxForm1040</cr:name>
          <cr:description>If salary is 70,000 then this rule makes 1040 as required form</cr:description>
          <cr:conditions>
               <multi-and>
                    <multi-and>
                         <equal-to>
<instance-method>
<variable>
<name>SalaryField</name>
<type-alias>com.blah.field.REInputObject</type-alias>
</variable>
<name>getKey</name>
</instance-method>
<literal:string>Salary</literal:string>
</equal-to>
<equal-to>
<instance-method>
<variable>
<name>SalaryField</name>
<type-alias>com.blah.field.REInputObject</type-alias>
</variable>
<name>getValue</name>
</instance-method>
<literal:integer>70000</literal:integer>
</equal-to>
                    </multi-and>
               </multi-and>
          </cr:conditions>
          <cr:actions>
               <new-instance>
                    <type-alias>com.blah.field.RequiredField</type-alias>
                    <arguments>
                         <literal:string>1040</literal:string>
                    </arguments>
               </new-instance>
          </cr:actions>
     </cr:rule>
</cr:rule-set>