private bool ProcessAsTableGroupJoin(bool includeAllSubclassJoins, SqlString[] withClauseFragments, JoinFragment joinFragment)
{
if (!NeedsTableGroupJoin(joins, withClauseFragments, includeAllSubclassJoins))
{
return(false);
}
var first = joins[0];
string joinString = ANSIJoinFragment.GetJoinString(first.JoinType);
joinFragment.AddFromFragmentString(
new SqlString(
joinString,
" (",
first.Joinable.TableName,
" ",
first.Alias
));
foreach (var join in joins)
{
if (join != first)
{
joinFragment.AddJoin(
join.Joinable.TableName,
join.Alias,
join.LHSColumns,
JoinHelper.GetRHSColumnNames(join.AssociationType, factory),
join.JoinType,
SqlString.Empty);
}
AddSubclassJoins(
joinFragment,
join.Alias,
join.Joinable,
// TODO (from hibernate): Think about if this could be made always true
// NH Specific: made always true (original check: join.JoinType == JoinType.InnerJoin)
true,
includeAllSubclassJoins
);
}
var tableGroupWithClause = GetTableGroupJoinWithClause(withClauseFragments, first);
joinFragment.AddFromFragmentString(tableGroupWithClause);
return(true);
}
internal static bool ProcessAsTableGroupJoin(IReadOnlyList <IJoin> tableGroupJoinables, SqlString[] withClauseFragments, bool includeAllSubclassJoins, JoinFragment joinFragment, Func <string, bool> isSubclassIncluded, ISessionFactoryImplementor sessionFactoryImplementor)
{
if (!NeedsTableGroupJoin(tableGroupJoinables, withClauseFragments, includeAllSubclassJoins))
{
return(false);
}
var first = tableGroupJoinables[0];
string joinString = ANSIJoinFragment.GetJoinString(first.JoinType);
joinFragment.AddFromFragmentString(
new SqlString(
joinString,
" (",
first.Joinable.TableName,
" ",
first.Alias
));
foreach (var join in tableGroupJoinables)
{
if (join != first)
{
joinFragment.AddJoin(
join.Joinable.TableName,
join.Alias,
join.LHSColumns,
JoinHelper.GetRHSColumnNames(join.AssociationType, sessionFactoryImplementor),
join.JoinType,
SqlString.Empty);
}
bool include = includeAllSubclassJoins && isSubclassIncluded(join.Alias);
// TODO (from hibernate): Think about if this could be made always true
// NH Specific: made always true (original check: join.JoinType == JoinType.InnerJoin)
const bool innerJoin = true;
joinFragment.AddJoins(
join.Joinable.FromJoinFragment(join.Alias, innerJoin, include),
join.Joinable.WhereJoinFragment(join.Alias, innerJoin, include));
}
var withClause = GetTableGroupJoinWithClause(withClauseFragments, first, sessionFactoryImplementor);
joinFragment.AddFromFragmentString(withClause);
return(true);
}
/// <summary>
/// Generate a sequence of <c>LEFT OUTER JOIN</c> clauses for the given associations.
/// </summary>
protected JoinFragment MergeOuterJoins(IList <OuterJoinableAssociation> associations)
{
JoinFragment outerjoin = Dialect.CreateOuterJoinFragment();
var sortedAssociations = GetSortedAssociations(associations);
OuterJoinableAssociation last = null;
foreach (OuterJoinableAssociation oj in sortedAssociations)
{
if (last != null && last.IsManyToManyWith(oj))
{
oj.AddManyToManyJoin(outerjoin, (IQueryableCollection)last.Joinable);
}
else
{
// NH Different behavior : NH1179 and NH1293
// Apply filters for entity joins and Many-To-One associations
SqlString filter = null;
var enabledFiltersForJoin = oj.ForceFilter ? enabledFilters : enabledFiltersForManyToOne;
if (oj.ForceFilter || enabledFiltersForJoin.Count > 0)
{
string manyToOneFilterFragment = oj.Joinable.FilterFragment(oj.RHSAlias, enabledFiltersForJoin);
bool joinClauseDoesNotContainsFilterAlready =
oj.On?.IndexOfCaseInsensitive(manyToOneFilterFragment) == -1;
if (joinClauseDoesNotContainsFilterAlready)
{
filter = new SqlString(manyToOneFilterFragment);
}
}
if (TableGroupJoinHelper.ProcessAsTableGroupJoin(new[] { oj }, new[] { oj.On, filter }, true, outerjoin, alias => true, factory))
{
continue;
}
oj.AddJoins(outerjoin);
// Ensure that the join condition is added to the join, not the where clause.
// Adding the condition to the where clause causes left joins to become inner joins.
if (SqlStringHelper.IsNotEmpty(filter))
{
outerjoin.AddFromFragmentString(filter);
}
}
last = oj;
}
return(outerjoin);
}
private void PrepareForIndex(QueryTranslator q)
{
IQueryableCollection collPersister = q.GetCollectionPersister(collectionRole);
if (!collPersister.HasIndex)
{
throw new QueryException("unindexed collection before []");
}
string[] indexCols = collPersister.IndexColumnNames;
if (indexCols.Length != 1)
{
throw new QueryException("composite-index appears in []: " + path);
}
string[] keyCols = collPersister.KeyColumnNames;
JoinFragment ojf = q.CreateJoinFragment(useThetaStyleJoin);
ojf.AddCrossJoin(collPersister.TableName, collectionName);
ojf.AddFromFragmentString(join.ToFromFragmentString);
if (collPersister.IsOneToMany)
{
IQueryable persister = (IQueryable)collPersister.ElementPersister;
ojf.AddJoins(
((IJoinable)persister).FromJoinFragment(collectionName, true, false),
((IJoinable)persister).WhereJoinFragment(collectionName, true, false)
);
}
if (!continuation)
{
AddJoin(collPersister.TableName, collectionName, keyCols);
}
join.AddCondition(collectionName, indexCols, " = ");
string[] eltCols = collPersister.ElementColumnNames;
CollectionElement elem = new CollectionElement();
elem.ElementColumns = StringHelper.Qualify(collectionName, eltCols);
elem.Type = collPersister.ElementType;
elem.IsOneToMany = collPersister.IsOneToMany;
elem.Alias = collectionName;
elem.Join = join;
collectionElements.Add(elem); //addlast
SetExpectingCollectionIndex();
q.AddCollection(collectionName, collectionRole);
q.AddJoin(collectionName, ojf);
}
/// <summary>
/// Generate a sequence of <c>LEFT OUTER JOIN</c> clauses for the given associations.
/// </summary>
protected JoinFragment MergeOuterJoins(IList <OuterJoinableAssociation> associations)
{
IList <OuterJoinableAssociation> sortedAssociations = new List <OuterJoinableAssociation>();
var indices = GetTopologicalSortOrder(_dependentAliases);
for (int index = indices.Length - 1; index >= 0; index--)
{
sortedAssociations.Add(associations[indices[index]]);
}
JoinFragment outerjoin = Dialect.CreateOuterJoinFragment();
OuterJoinableAssociation last = null;
foreach (OuterJoinableAssociation oj in sortedAssociations)
{
if (last != null && last.IsManyToManyWith(oj))
{
oj.AddManyToManyJoin(outerjoin, (IQueryableCollection)last.Joinable);
}
else
{
oj.AddJoins(outerjoin);
// NH Different behavior : NH1179 and NH1293
// Apply filters in Many-To-One association
if (enabledFiltersForManyToOne.Count > 0)
{
string manyToOneFilterFragment = oj.Joinable.FilterFragment(oj.RHSAlias, enabledFiltersForManyToOne);
bool joinClauseDoesNotContainsFilterAlready =
outerjoin.ToFromFragmentString.IndexOfCaseInsensitive(manyToOneFilterFragment) == -1;
if (joinClauseDoesNotContainsFilterAlready)
{
// Ensure that the join condition is added to the join, not the where clause.
// Adding the condition to the where clause causes left joins to become inner joins.
outerjoin.AddFromFragmentString(new SqlString(manyToOneFilterFragment));
}
}
}
last = oj;
}
return(outerjoin);
}
