void IPredicate.SetPredicateGroup(PredicateGroupType predicateGroupType)
{
PredicateGroup.SetPredicateGroup(this, predicateGroupType);
}
// General translation method for the database (table) node.
internal static Chainer TranslateNode(SemqContext context, DbNode predecessor, DbNode node)
{
var currentNode = node.Root;
if (context == null)
{
context = new SemqContext(currentNode);
}
context.AddNode(currentNode);
currentNode.CheckReuseAndThrow();
context.SetIndex(currentNode);
Chainer query = Translate.CreateQueryFromSubject(currentNode);
if (currentNode.HasExpression)
{
query.ExpressionGroupType = ExpressionGroupType.BeginEnd;
Translate.ProcessExpression(currentNode, null, ref query);
}
else
{
currentNode.SetAsUsed();
}
Translate.ConvertChainIntoPredicate(currentNode);
if (((IPredicate)currentNode).HasPredicate)
{
Predicate prevPredicate = null;
var predicates = ((IPredicate)currentNode).Predicates;
var pix = 0;
foreach (var predicate in predicates)
{
SetExpressionGrouping(query, predicates, predicate, ref pix);
CheckHavingPredicateAndThrow(predicate, ref prevPredicate);
var innerNode = ((ISemantic)predicate).Subject;
if (innerNode != null)
{
context.AddNode(innerNode);
if (CheckSelfPredicate(currentNode, innerNode))
{
innerNode = innerNode.BreakChain();
predicate.Sentence = (ISemantic)innerNode;
}
else if (innerNode.Equals(currentNode) && innerNode.HasExpression)
{
// let the predicate subject have the same level as its caller
innerNode.ChangeIndex(currentNode.Index);
Translate.ProcessExpression(innerNode, predicate, ref query);
continue;
}
// get link
var link = DbMapping.TryFindPredicateLink(currentNode, innerNode);
// process intermediate node
DbNode intermediate = null;
if (link.HasIntermediate)
{
intermediate = Translate.ProcessIntermediate(context, predicate, innerNode, link);
}
// process a simple foreign key (if possible)
else if (Translate.ProcessSimpleForeignKey(currentNode, innerNode, predicate, link, ref query))
{
CheckQuantifierAndThrow(currentNode, innerNode, intermediate, predicate);
continue;
}
CheckQuantifierAndThrow(currentNode, innerNode, intermediate, predicate);
Translate.ProcessPredicate(context, predicate, ref query);
}
else
{
Translate.ProcessSelfPredicate(context, currentNode, predicate, ref query);
}
}
}
if (predecessor != null)
{
Translate.Finalize(predecessor, currentNode, ref query);
}
if (((IPredicate)currentNode).PredicateGroupLevel != 0)
{
PredicateGroup.ThrowInvalidPredicateGroupingException((DbNode)currentNode);
}
return(query);
}
