// try get variable from build context
// Note:
// The snippet object must be handled on different root (ParamRoot) than the procedure
// since the params are not declared on the snippet's root but rather on the master proc's root.
internal Variable TryGetVariable(
string variableName,
out QueryTalkException exception,
Variable.SearchType searchType = Variable.SearchType.Any)
{
if (Root.CompilableType.IsViewOrSnippet())
{
return(ParamRoot.TryGetVariable(variableName, out exception, searchType));
}
else
{
return(Root.TryGetVariable(variableName, out exception, searchType));
}
}
// attention:
// If root object is accessed through the BuildContext object, use buildContext.TryGetVariable method instead.
internal Variable TryGetVariable(
string variableName,
out QueryTalkException exception,
Variable.SearchType searchType = Variable.SearchType.Any)
{
exception = null;
if (variableName == null)
{
exception = Variable.InvalidVariableException(variableName,
QueryTalkExceptionType.ArgumentNull);
return(null);
}
Variable param;
Variable variable;
// try get param
param = AllParams.Where(p => p.Name.EqualsCS(variableName))
.FirstOrDefault();
// try get non-param
variable = _variables.Where(v => v.Name.EqualsCS(variableName))
.FirstOrDefault();
if (searchType == Variable.SearchType.Any)
{
return(param ?? variable);
}
if (searchType == Variable.SearchType.Inliner &&
(param == null || param.DT.IsNotInliner()))
{
exception = Variable.InvalidVariableException(variableName,
QueryTalkExceptionType.InlinerNotFound);
return(null);
}
// param/variable should exists
if (searchType != Variable.SearchType.Any && (param == null && variable == null))
{
exception = Variable.InvalidVariableException(variableName,
QueryTalkExceptionType.ParamOrVariableNotDeclared);
return(null);
}
return(param ?? variable);
}