/// <summary>
/// Adds the specified sub query.
/// </summary>
/// <param name="subQuery">The sub query to consider.</param>
/// <returns>Return this added parameter.</returns>
public DataExpression UseSubQuery(IDbQuery subQuery)
{
if (SubQueries == null) SubQueries = new List<DbQuery>();
SubQueries.Add((DbQuery)subQuery);
return BdoScript.Function("sqlQuery", SubQueries.Count.ToString()).CreateExp();
}
/// Closes the subquery parts aggregator and adds a subquery as a part of this query.
///
/// If a subquery parts aggregator is open and is also visiting a subquery,
/// redirects the call to it instead.
public void CloseSubQueryExpressionPartsAggregator()
{
if (_visitingSubQueryExpression && _subQueryExpressionPartsAggregator._visitingSubQueryExpression)
{
_subQueryExpressionPartsAggregator.CloseSubQueryExpressionPartsAggregator();
}
else
{
if (string.IsNullOrEmpty(SelectPart))
{
SelectPart = _subQueryExpressionPartsAggregator.SelectPart;
}
else
{
SubQueries.Add(_subQueryExpressionPartsAggregator.BuildQueryStatement().Trim(';'));
}
_visitingSubQueryExpression = false;
}
}
private void CreateSubQuery(string alias, Type type)
{
var subQuery = AliasedSqlSubQuery.Create(alias, type, _conventionReader);
SubQueries.Add(subQuery);
}