private void AddJoins(Wrapper wrapper, SqlQuery dataQuery, string alias, bool sub = false)
{
var selectWithAliasWrapper = SelectWithAlias(alias);
var joins = wrapper.GetJoins();
var j = 0;
foreach (var join in joins)
{
var joinWrapper = join.Key;
var joinAttr = join.Value.GetCustomAttribute <JoinAttribute>();
var joinAlias = alias + ++j;
var tableWithAlias = joinWrapper.Table + " " + joinAlias;
var selectWithAliasJoin = SelectWithAlias(joinAlias);
Exp on = null;
for (var k = 0; k < joinAttr.ColumnsFrom.Length; k++)
{
on = on & Exp.EqColumns(selectWithAliasWrapper(joinAttr.ColumnsFrom[k]), selectWithAliasJoin(joinAttr.ColumnsTo[k]));
}
if (joinAttr.JoinType == JoinTypeEnum.Sub)
{
var subQuery = new SqlQuery(tableWithAlias).Where(on);
var joinCols = joinWrapper.GetColumnNames(joinAlias);
if (joinCols.Any())
{
subQuery.Select("concat(\"[\", group_concat(JSON_ARRAY(" + string.Join(",", joinCols) + ") SEPARATOR ','), \"]\")");
}
foreach (var con in joinWrapper.GetConditions(joinAlias))
{
subQuery.Where(con.Key, con.Value);
}
AddJoins(joinWrapper, subQuery, joinAlias, true);
dataQuery.Select(subQuery);
}
else
{
if (sub)
{
var joinCols = joinWrapper.GetColumnNames(joinAlias);
if (joinCols.Any())
{
dataQuery.Select("concat(\"[\", group_concat(JSON_ARRAY(" + string.Join(",", joinCols) + ") SEPARATOR ','), \"]\")");
}
}
else
{
dataQuery.Select(joinWrapper.GetColumnNames(joinAlias));
}
switch (joinAttr.JoinType)
{
//case JoinTypeEnum.Left:
// dataQuery.LeftOuterJoin(tableWithAlias, on);
// break;
//case JoinTypeEnum.Right:
// dataQuery.RightOuterJoin(tableWithAlias, on);
// break;
case JoinTypeEnum.Inner:
dataQuery.InnerJoin(tableWithAlias, on);
break;
}
foreach (var con in joinWrapper.GetConditions(joinAlias))
{
dataQuery.Where(con.Key, con.Value);
}
}
}
}
