public SourceJoinSqlModel(TargetEntitySqlModel targetEntitySqlModel, SourceGraphSqlModel sourceGraph)
{
_targetEntitySqlModel = targetEntitySqlModel;
_sourceGraph = sourceGraph;
SourceToRefsJoin = new DmlfFromItem();
//foreach (var column in _targetEntitySqlModel.RequiredSourceColumns)
//{
// if (Columns.ContainsKey(column.Alias)) continue;
// Columns[column.Alias] = new SourceColumnSqlModel
// {
// Alias = column.Alias,
// };
// bool addedEntity = false;
// foreach (var ent in column.Entities)
// {
// if (ent.SingleKeyColumn == column.Alias)
// {
// AddEntity(ent);
// addedEntity = true;
// break;
// }
// }
// if (addedEntity) continue;
// AddEntity(column.Entities.First());
//}
if (_sourceGraph == null)
{
// flat variant
PrimarySource = _targetEntitySqlModel.DataSync.FlatSources.FirstOrDefault(x => x.Match(_targetEntitySqlModel.Dbsh.PrimarySource));
if (PrimarySource == null)
{
throw new IncorrectRdsDefinitionException($"DBSH-00000 Source not found for entity {_targetEntitySqlModel.LogName}");
}
SourceToRefsJoin.Source = PrimarySource.QuerySource;
foreach (var col in PrimarySource.Columns)
{
Columns[col.Alias] = col;
}
}
else
{
_entityQueue.AddRange(_sourceGraph.Entities);
DetectPrimarySource();
DetectUnusedEntities();
RebuildEntityList();
//queue.Add(_targetEntitySqlModel.KeySourceColumns.First().Entities.First());
//foreach (var ent in _targetEntitySqlModel.RequiredSourceColumns.SelectMany(x => x.Entities))
//{
// if (queue.Contains(ent)) continue;
// queue.Add(ent);
//}
if (!_entityQueue.Any() && targetEntitySqlModel.Dbsh.Columns.Any(x => x.IsKey))
{
throw new IncorrectRdsDefinitionException($"LGM-00000 None of source entities is used in {_targetEntitySqlModel.LogName} (try to set source column)");
}
if (_entityQueue.Any())
{
CreateSourceJoin();
AddRefsToJoin();
}
foreach (var col in Columns.Values) col.CompileFilter();
}
}
public DmlfSource GetRefSource(DmlfFromItem from, SourceJoinSqlModel joinModel)
{
var res = from.FindSourceWithAlias(SqlAlias);
if (res != null) return res;
res = new DmlfSource
{
Alias = SqlAlias,
TableOrView = TargetTableSqlName,
LinkedInfo = TargetLinkedInfo,
};
var rel = new DmlfRelation
{
JoinType = DmlfJoinType.Left,
Reference = res,
};
foreach (var keycol in TargetColumns.Where(x => x.IsKey || x.IsRestriction))
{
rel.Conditions.Add(new DmlfEqualCondition
{
LeftExpr = keycol.CreateSourceExpression(joinModel, false),
RightExpr = keycol.CreateTargetExpression(res),
CollateSpec = keycol.UseCollate(joinModel) ? "DATABASE_DEFAULT" : null,
});
}
from.Relations.Add(rel);
return res;
}
