private void CreateSql()
{
SelectDataReader sr = new SelectDataReader();
bool isgroup = false;;
StringBuilder select = new StringBuilder();
StringBuilder group = new StringBuilder();
if (ID != null)
{
select.Append("(" + ID.ColumnName + ") as p_" + ID.Handler.Property.Name);
group.Append(ID.ColumnName);
sr.AddProperty(ID);
}
foreach (PropertyMapper pm in Properties)
{
sr.AddProperty(pm);
if (select.Length > 0)
{
select.Append(",");
}
if (pm.Aggregation != null)
{
if (pm.Aggregation.DISTINCT)
{
select.Append("(" + pm.Aggregation.Type + "(DISTINCT " + pm.ColumnName + ")) as p_" + pm.Handler.Property.Name);
}
else
{
select.Append("(" + pm.Aggregation.Type + "(" + pm.ColumnName + ")) as p_" + pm.Handler.Property.Name);
}
isgroup = true;
}
else
{
select.Append("(" + pm.ColumnName + ") as p_" + pm.Handler.Property.Name);
if (group.Length > 0)
{
group.Append(",");
}
group.Append(pm.ColumnName);
}
}
sr.Select = "Select " + DISTINCT + select.ToString() + " from {0}";
mSelectReader.Add(ObjectType, sr);
if (isgroup)
{
sr.Group = group.ToString();
}
}
internal static object Load(Type type, object id, IConnectinContext cc)
{
Mappings.ObjectMapper om = Mappings.ObjectMapper.GetOM(type);
Mappings.SelectDataReader sr = om.GetSelectReader(type);
if (om.ID == null)
{
throw new PeanutException(DataMsg.ID_MAP_NOTFOUND);
}
Expression exp = new Expression();
exp.SqlText.Append(om.ID.ColumnName + "=@p1");
exp.Parameters.Add(new Command.Parameter {
Name = "p1", Value = id
});
return(EntityBase.ExOnListFirst(type, cc, om.GetSelectTable(sr), exp, null, null));
}
public string GetSelectTable(SelectDataReader sr)
{
return(string.Format(sr.Select, Table));
}
private SelectDataReader CreateSelectReader(Type type)
{
SelectDataReader sr = new SelectDataReader();
if (type != ObjectType)
{
sr.Proxy = true;
}
bool isgroup = false;;
StringBuilder select = new StringBuilder();
StringBuilder group = new StringBuilder();
PropertyHandler handler = null;
if (ID != null)
{
handler = MatchProperty(ID.Handler.Property, type);
if (handler != null)
{
select.Append("(" + ID.ColumnName + ") as p_" + ID.Handler.Property.Name);
group.Append(ID.ColumnName);
sr.AddProperty(ID);
sr.ProxyProperties.Add(handler);
}
}
foreach (PropertyMapper pm in Properties)
{
handler = MatchProperty(pm.Handler.Property, type);
if (handler == null)
{
continue;
}
sr.ProxyProperties.Add(handler);
sr.AddProperty(pm);
if (select.Length > 0)
{
select.Append(",");
}
if (pm.Aggregation != null)
{
if (pm.Aggregation.DISTINCT)
{
select.Append("(" + pm.Aggregation.Type + "(DISTINCT " + pm.ColumnName + ")) as p_" + pm.Handler.Property.Name);
}
else
{
select.Append("(" + pm.Aggregation.Type + "(" + pm.ColumnName + ")) as p_" + pm.Handler.Property.Name);
}
isgroup = true;
}
else
{
select.Append("(" + pm.ColumnName + ") as p_" + pm.Handler.Property.Name);
if (group.Length > 0)
{
group.Append(",");
}
group.Append(pm.ColumnName);
}
}
sr.Select = "Select " + DISTINCT + select.ToString() + " from {0}";
if (isgroup)
{
sr.Group = group.ToString();
}
if (sr.Properties.Count == 0)
{
throw new PeanutException(string.Format(DataMsg.BOBJ_NOTMATCH_DOBJ, type, ObjectType));
}
return(sr);
}
