public virtual bool Visit(Net.Vpc.Upa.Expressions.Expression expr, Net.Vpc.Upa.Expressions.ExpressionTag tag)
 {
     if (expr is Net.Vpc.Upa.Expressions.Param)
     {
         Net.Vpc.Upa.Expressions.Param p = (Net.Vpc.Upa.Expressions.Param)expr;
         p.SetValue(expression.GetParameter(p.GetName()));
     }
     return(true);
 }
 protected internal virtual Net.Vpc.Upa.Impl.Uql.Compiledexpression.CompiledParam CompileVal(Net.Vpc.Upa.Expressions.Param v, Net.Vpc.Upa.Impl.Uql.ExpressionTranslationManager manager, Net.Vpc.Upa.Impl.Uql.ExpressionDeclarationList declarations)
 {
     if (v == null)
     {
         return(null);
     }
     Net.Vpc.Upa.Impl.Uql.Compiledexpression.CompiledParam s = new Net.Vpc.Upa.Impl.Uql.Compiledexpression.CompiledParam(v.IsUnspecified() ? null : v.GetValue(), v.GetName(), null, v.IsUnspecified());
     //        s.setDeclarationList(declarations);
     return(s);
 }