protected override DbCommand CreateDbCommand()
{
QaCommand cmd = new QaCommand();
cmd.Connection = this;
return(cmd);
}
protected override DbCommand CreateDbCommand()
{
QaCommand cmd = new QaCommand();
cmd.Connection = this;
return cmd;
}
internal QaDataReaderRIndex(QaCommand cm, ref QaConnection.Index sysindex, System.Net.Sockets.NetworkStream ns)
: base()
{
cmd = cm;
netstm = ns;
isClosed = false;
eof = false;
isRindexEnabled = cm.conn.isRIndexEnabled();
{
int columnCount = sysindex.Table.Columns.Length;
metadata = new MetaData[columnCount];
ordinals = new Dictionary <string, int>();
recordsize = 0;
for (int i = 0; i < columnCount; i++)
{
string cname = sysindex.Table.Columns[i].Name;
Type type;
{
string colType = sysindex.Table.Columns[i].Type;
if (colType.StartsWith("char(", StringComparison.OrdinalIgnoreCase))
{
colType = "char";
}
switch (colType)
{
case "long":
type = typeof(System.Int64);
break;
case "int":
type = typeof(System.Int32);
break;
case "double":
type = typeof(System.Double);
break;
case "char":
type = typeof(System.String);
break;
case "DateTime":
type = typeof(System.DateTime);
break;
default:
throw new Exception("Type: " + colType + " is invalid.");
}
}
int frontbytes = 1;
int csize = sysindex.Table.Columns[i].Bytes - 1;
int backbytes = 0;
MetaData md = MetaData.Prepare(cname, type, csize, frontbytes, backbytes);
metadata[i] = md;
recordsize += csize + frontbytes + backbytes;
ordinals[cname.ToLower()] = i;
}
if (null == cmd.buf ||
cmd.buf.Length < recordsize)
{
cmd.buf = new byte[recordsize];
}
currow = new object[columnCount];
}
}
// Note: the below constructor isn't used for rindex.
public QaDataReader(QaCommand cm, System.Net.Sockets.NetworkStream ns)
{
cmd = cm;
netstm = ns;
isClosed = false;
eof = false;
isRindexEnabled = cm.conn.isRIndexEnabled();
//Get metadata
try
{
//column count
int bc = 0;
cmd.buf = XContent.ReceiveXBytes(netstm, out bc, cmd.buf);
if (bc != 4)
{
throw new Exception("Column count expected 4 bytes.");
}
int columnCount = Utils.BytesToInt(cmd.buf);
metadata = new MetaData[columnCount];
ordinals = new Dictionary <string, int>();
recordsize = 0;
for (int i = 0; i < columnCount; i++)
{
string cname = XContent.ReceiveXString(netstm, cmd.buf);
string ctype = XContent.ReceiveXString(netstm, cmd.buf);
cmd.buf = XContent.ReceiveXBytes(netstm, out bc, cmd.buf);
if (bc != 4)
{
throw new Exception("Front bytes expected 4 bytes.");
}
int frontbytes = Utils.BytesToInt(cmd.buf);
cmd.buf = XContent.ReceiveXBytes(netstm, out bc, cmd.buf);
if (bc != 4)
{
throw new Exception("Size expected 4 bytes.");
}
int csize = Utils.BytesToInt(cmd.buf);
cmd.buf = XContent.ReceiveXBytes(netstm, out bc, cmd.buf);
if (bc != 4)
{
throw new Exception("Back bytes expected 4 bytes.");
}
int backbytes = Utils.BytesToInt(cmd.buf);
MetaData md = MetaData.Prepare(cname, Type.GetType(ctype), csize, frontbytes, backbytes);
metadata[i] = md;
recordsize += csize + frontbytes + backbytes;
ordinals[cname.ToLower()] = i;
}
if (null == cmd.buf ||
cmd.buf.Length < recordsize)
{
cmd.buf = new byte[recordsize];
}
currow = new object[columnCount];
}
catch
{
cmd.Abort();
throw;
}
}
