How to use

getPreviousClassType

method

in

org.drools.guvnor.models.commons.shared.rule.ExpressionFormLine

private void visitSingleFieldConstraint( SingleFieldConstraintEBLeftSide sfexp ) {
  String genericType = sfexp.getExpressionLeftSide().getGenericType();
  String factType = sfexp.getExpressionLeftSide().getPreviousClassType();
  if ( factType == null ) {
    factType = sfexp.getExpressionLeftSide().getClassType();
  }
  InterpolationVariable var = new InterpolationVariable( sfexp.getValue(),
                              genericType,
                              factType,
                              sfexp.getFieldName() );
  if ( BaseSingleFieldConstraint.TYPE_TEMPLATE == sfexp.getConstraintValueType() && !vars.containsKey( var ) ) {
    vars.put( var,
         vars.size() );
  }
  //Visit Connection constraints
  if ( sfexp.getConnectives() != null ) {
    for ( int i = 0; i < sfexp.getConnectives().length; i++ ) {
      final ConnectiveConstraint cc = sfexp.getConnectives()[ i ];
      InterpolationVariable ccVar = new InterpolationVariable( cc.getValue(),
                                   genericType,
                                   factType,
                                   cc.getFieldName() );
      if ( BaseSingleFieldConstraint.TYPE_TEMPLATE == cc.getConstraintValueType() && !vars.containsKey( ccVar ) ) {
        vars.put( ccVar,
             vars.size() );
      }
    }
  }
}