void PrepareFilterParameter()
{
if (IsFilter())
{
// Handle collection-filter compilation.
// filter-implied FROM element is already converted by HqlFilterPreprocessor
// Create a parameter specification for the collection filter...
IType collectionFilterKeyType = _sessionFactoryHelper.RequireQueryableCollection(_collectionFilterRole).KeyType;
ParameterNode collectionFilterKeyParameter = (ParameterNode)adaptor.Create(PARAM, "?");
CollectionFilterKeyParameterSpecification collectionFilterKeyParameterSpec = new CollectionFilterKeyParameterSpecification(
_collectionFilterRole, collectionFilterKeyType, _positionalParameterCount++
);
collectionFilterKeyParameter.HqlParameterSpecification = collectionFilterKeyParameterSpec;
_parameters.Add(collectionFilterKeyParameterSpec);
}
}
void PrepareFromClauseInputTree(IASTNode fromClauseInput, ITreeNodeStream input)
{
if (IsFilter())
{
// Handle collection-fiter compilation.
// IMPORTANT NOTE: This is modifying the INPUT (HQL) tree, not the output tree!
IQueryableCollection persister = _sessionFactoryHelper.GetCollectionPersister(_collectionFilterRole);
IType collectionElementType = persister.ElementType;
if (!collectionElementType.IsEntityType)
{
throw new QueryException("collection of values in filter: this");
}
string collectionElementEntityName = persister.ElementPersister.EntityName;
IASTNode fromElement = (IASTNode)adaptor.Create(FILTER_ENTITY, collectionElementEntityName);
IASTNode alias = (IASTNode)adaptor.Create(ALIAS, "this");
((HqlSqlWalkerTreeNodeStream)input).InsertChild(fromClauseInput, fromElement);
((HqlSqlWalkerTreeNodeStream)input).InsertChild(fromClauseInput, alias);
// fromClauseInput.AddChild(fromElement);
// fromClauseInput.AddChild(alias);
// Show the modified AST.
if (log.IsDebugEnabled)
{
log.Debug("prepareFromClauseInputTree() : Filter - Added 'this' as a from element...");
}
// Create a parameter specification for the collection filter...
IType collectionFilterKeyType = _sessionFactoryHelper.RequireQueryableCollection(_collectionFilterRole).KeyType;
ParameterNode collectionFilterKeyParameter = (ParameterNode)adaptor.Create(PARAM, "?");
CollectionFilterKeyParameterSpecification collectionFilterKeyParameterSpec = new CollectionFilterKeyParameterSpecification(
_collectionFilterRole, collectionFilterKeyType, _positionalParameterCount++
);
collectionFilterKeyParameter.HqlParameterSpecification = collectionFilterKeyParameterSpec;
_parameters.Add(collectionFilterKeyParameterSpec);
}
}
