internal static void BuildNode(this Chainer node, QueryPart queryPart,
BuildContext buildContext, BuildArgs buildArgs, StringBuilder sql)
{
if (node == null)
{
return;
}
var root = node.GetRoot();
// snippet check
if (root.CompilableType == Compilable.ObjectType.Snippet && node is ISnippetDisallowed)
{
node.Throw(QueryTalkExceptionType.InvalidSnippet, null, node.Method);
}
string append = null;
if (node.Build != null && !node.SkipBuild)
{
// important: assign current object
buildContext.Current = node;
// important: store query part into the current object
buildContext.Current.QueryPart = queryPart;
// build
append = node.Build(buildContext, buildArgs);
TryThrow(node.Exception);
TryThrow(buildContext.Exception);
}
if (append != null)
{
if (append == Text.Terminator)
{
sql.TrimEnd();
}
sql.Append(append);
// assure that there is always a spacing between the sql parts/clauses
sql.S();
}
// check view
if (root.CompilableType == Compilable.ObjectType.View &&
(root.Statements.Count > 1 || // view can have only a single statement
!(node is IViewAllowed))) // only clauses related to select statement can be contained in the view
{
root.CheckNodeReuseAndThrow();
node.Throw(QueryTalkExceptionType.InvalidView, null, node.Method);
}
}
// returns Root of the chain object in null safe manner
internal static Designer TryGetRoot(this Chainer cobj)
{
if (cobj != null)
{
if (cobj.Root is Designer)
{
return(cobj.GetRoot());
}
else
{
return(null);
}
}
else
{
return(null);
}
}
internal NonTranChainer(Chainer prev)
: base(prev)
{
CheckNullAndThrow(Arg(() => prev, prev));
prev.GetRoot().IsEmbeddedTransaction = false;
}