public virtual object Find(IDb session, object key)
{
ErrorIfSPResult();
SqlColumn pk = null;
object result = null;
foreach (SqlColumn c in columns)
{
if (c.IsPK)
{
pk = c;
break;
}
}
if (pk != null)
{
LitQuery q = new LitQuery();
q.Constrain(pk.Alias).Equal(key);
IList list = new ArrayList(1);
Select(session, q, list);
if (list.Count > 0)
{
result = list[0];
}
}
return(result);
}
public virtual int Delete(IDb db, IQuery query)
{
ErrorIfSPResult();
int result = 0;
LitQuery sqlquery = (LitQuery)query; //as LitQuery;
string sql = GetDeleteSql(sqlquery);
IDbCommand cmd = null;
try
{
cmd = db.Connection.CreateCommand();
cmd.CommandText = sql;
cmd.CommandType = CommandType.Text;
cmd.Transaction = db.Transaction;
if (sqlquery != null)
{
sqlquery.SetParameters(cmd);
}
cmd.Prepare();
TraceObject.Instance.TraceCommand(cmd);
result = cmd.ExecuteNonQuery();
}
finally
{
if (cmd != null)
{
cmd.Dispose();
cmd = null;
}
}
return(result);
}
protected virtual string GetDeleteSql(LitQuery query)
{
StringBuilder buf = new StringBuilder("delete from ");
if (schema != null && schema.Length > 0)
{
buf.Append("[").Append(schema).Append("].");
}
buf.Append("[").Append(name).Append("]");
if (query != null)
{
buf.Append(" ").Append(query.GetSql(this));
}
buf.Append(";");
return(buf.ToString());
}
public virtual void Select(IDb db, IQuery query, IList list)
{
ErrorIfSPResult();
LitQuery sqlquery = (LitQuery)query;
string sql = GetSelectSql(sqlquery);
IDbCommand cmd = null;
IDataReader reader = null;
try
{
cmd = db.Connection.CreateCommand();
cmd.CommandText = sql;
cmd.CommandType = CommandType.Text;
cmd.Transaction = db.Transaction;
if (sqlquery != null)
{
sqlquery.SetParameters(cmd);
}
cmd.Prepare();
TraceObject.Instance.TraceCommand(cmd);
reader = cmd.ExecuteReader();
FillByIndex(reader, list);
}
finally
{
if (reader != null)
{
if (!reader.IsClosed)
{
reader.Close();
}
reader.Dispose();
reader = null;
}
if (cmd != null)
{
cmd.Dispose();
cmd = null;
}
}
FireTriggers(list, new TriggerEventArgs(db, Timing.AfterActivate));
}
protected virtual string GetSelectSql(LitQuery query)
{
if (selectSQL == null)
{
StringBuilder buf = new StringBuilder("select ");
bool comma = false;
foreach (SqlColumn column in columns)
{
if (comma)
{
buf.Append(",");
}
else
{
comma = true;
}
buf.Append("[").Append(column.Name).Append("]");
}
buf.Append(" from ");
if (schema != null && schema.Length > 0)
{
buf.Append("[").Append(schema).Append("].");
}
buf.Append("[").Append(name).Append("]");
selectSQL = buf.ToString();
}
if (query != null)
{
StringBuilder buf = new StringBuilder(selectSQL);
buf.Append(" ").Append(query.GetSql(this));
buf.Append(";");
return(buf.ToString());
}
else
{
return(string.Format("{0};", selectSQL));
}
}
public LitConstraint(IQuery query)
{
this.query = (LitQuery) query;
}
public LitConstraint(IQuery query)
{
this.query = (LitQuery)query;
}
protected virtual string GetSelectSql(LitQuery query)
{
if (selectSQL == null)
{
StringBuilder buf = new StringBuilder("select ");
bool comma = false;
foreach (SqlColumn column in columns)
{
if (comma)
buf.Append(",");
else
comma = true;
buf.Append("[").Append(column.Name).Append("]");
}
buf.Append(" from ");
if (schema != null && schema.Length > 0)
buf.Append("[").Append(schema).Append("].");
buf.Append("[").Append(name).Append("]");
selectSQL = buf.ToString();
}
if (query != null)
{
StringBuilder buf = new StringBuilder(selectSQL);
buf.Append(" ").Append(query.GetSql(this));
buf.Append(";");
return buf.ToString();
}
else
return string.Format("{0};", selectSQL);
}
protected virtual string GetDeleteSql(LitQuery query)
{
StringBuilder buf = new StringBuilder("delete from ");
if (schema != null && schema.Length > 0)
buf.Append("[").Append(schema).Append("].");
buf.Append("[").Append(name).Append("]");
if (query != null)
buf.Append(" ").Append(query.GetSql(this));
buf.Append(";");
return buf.ToString();
}
public virtual object Find(IDb session, object key)
{
ErrorIfSPResult();
SqlColumn pk = null;
object result = null;
foreach (SqlColumn c in columns)
{
if (c.IsPK)
{
pk = c;
break;
}
}
if (pk != null)
{
LitQuery q = new LitQuery();
q.Constrain(pk.Alias).Equal(key);
IList list = new ArrayList(1);
Select(session, q, list);
if (list.Count > 0)
result = list[0];
}
return result;
}
