Example: Hide eligibility criteria from the decision report depending on the benefit applied for

Example: Hide eligibility criteria from a decision report depending on benefit applied for

In this example, a rulebase listener is used to install a decision report filter that can hide attributes from a decision report based on the value of another attribute. Given attribute with a name of (for example) 'foo', it looks for an attribute whose name is 'foo_show' and if foo_show has a value of false, then the attribute foo and its proof is hidden from the decision report.

rulebase-listeners.xml

This file should be created in the include folder of the rulebase project, with the following contents:

<listeners>

       <listener>

              <handler platform="dotnet" class="DecisionFilteringExample.ExampleRulebaseListener"/>

          <handler platform="java" class="com.oracle.determinations.example.ExampleRulebaseListener"/>

      </listener>

</listeners>

Java Implementation

The following code should be compiled into a JAR file and copied into the include\lib folder of the rulebase project.

public class ExampleRulebaseListener implements RulebaseListener {

      ExampleDecisionReportFilter m_DecisionReportFilter;

      public void initialize(Rulebase rb, Map properties, FilesContainer files) {
            m_DecisionReportFilter = new ExampleDecisionReportFilter();
       }

      public void sessionCreated(Session session) {
                       session.setDecisionReportFilter(m_DecisionReportFilter);
      }
}



public class ExampleDecisionReportFilter implements DecisionReportFilter {

      public DecisionReportFilterResult getAttributeFilter(EntityInstance instance, Attribute attr) {
            Attribute filterAttr = instance.getEntity().getAttribute(attr.getName() + "_show");
            if (filterAttr != null && Boolean.FALSE.equals(filterAttr.getValue(instance))) {
                  return DecisionReportFilterResult.SILENT_INVISIBLE;
            }

            return DecisionReportFilterResult.UNFILTERED;
      }

      public DecisionReportFilterResult getRelationshipFilter(EntityInstance instance, Relationship attr) {
            return DecisionReportFilterResult.UNFILTERED;
      }
}

C# Implementation

The following code should be compiled into an assembly DLL and copied into the include\lib folder of the rulebase project.

public class ExampleRulebaseListener : RulebaseListener
{
      ExampleDecisionReportFilter m_DecisionFilter;
      public void Initialize(Rulebase rb, Oracle.Determinations.Masquerade.Util.Map properties, FilesContainer files)
      {
            m_DecisionFilter = new ExampleDecisionReportFilter();
      }

      public void SessionCreated(Session session)
      {
            session.SetDecisionReportFilter(m_DecisionFilter);
            }
      }

class ExampleDecisionReportFilter : DecisionReportFilter
{

      public DecisionReportFilterResult GetAttributeFilter(EntityInstance instance, RBAttr attr)
      {
            RBAttr filterAttr = instance.GetEntity().GetAttribute(attr.GetName() + "_show");
            if (filterAttr != null && Oracle.Determinations.Masquerade.Lang.Boolean.FALSE.Equals(filterAttr.GetValue(instance)))
            {
                  return DecisionReportFilterResult.SILENT_INVISIBLE;
            }

            return DecisionReportFilterResult.UNFILTERED;
      }

      public DecisionReportFilterResult GetRelationshipFilter(EntityInstance instance, Relationship attr)
      {
            return DecisionReportFilterResult.UNFILTERED;
      }

}