public Expression AddJoin(Expression expression, string key)
{
NhJoinClause join;
if (!_joins.TryGetValue(key, out join))
{
join = new NhJoinClause(_nameGenerator.GetNewName(), expression.Type, expression);
_queryModel.BodyClauses.Add(join);
_joins.Add(key, join);
}
return new QuerySourceReferenceExpression(@join);
}
protected internal Expression AddJoin(MemberExpression expression)
{
string key = ExpressionKeyVisitor.Visit(expression, null);
NhJoinClause join;
if (!_joins.TryGetValue(key, out join))
{
join = new NhJoinClause(_nameGenerator.GetNewName(), expression.Type, expression);
_joins.Add(key, join);
}
QuerySourceReferenceExpression newExpr = new QuerySourceReferenceExpression(join);
if (!_expressionMap.ContainsKey(expression))
_expressionMap.Add(expression, newExpr);
return newExpr;
}
private void VisitNhJoinClause(string querySourceName, NhJoinClause joinClause)
{
var expression = HqlGeneratorExpressionTreeVisitor.Visit(joinClause.FromExpression, VisitorParameters).AsExpression();
var alias = _hqlTree.TreeBuilder.Alias(querySourceName);
HqlTreeNode hqlJoin;
if (joinClause.IsInner)
{
hqlJoin = _hqlTree.TreeBuilder.Join(expression, @alias);
}
else
{
hqlJoin = _hqlTree.TreeBuilder.LeftJoin(expression, @alias);
}
foreach (var withClause in joinClause.Restrictions)
{
var booleanExpression = HqlGeneratorExpressionTreeVisitor.Visit(withClause.Predicate, VisitorParameters).AsBooleanExpression();
hqlJoin.AddChild(_hqlTree.TreeBuilder.With(booleanExpression));
}
_hqlTree.AddFromClause(hqlJoin);
}
private void AddJoin(QueryModel queryModel, NhJoinClause joinClause)
{
queryModel.BodyClauses.Add(joinClause);
}
public virtual void VisitNhJoinClause(NhJoinClause joinClause, QueryModel queryModel, int index)
{
}
public override void VisitNhJoinClause(NhJoinClause joinClause, QueryModel queryModel, int index)
{
_namer.Add(joinClause);
}