set(SqlVarChar data)
{
if (data == null || data.isNull())
{
setNull();
}
else
{
clear();
put(data.value, 0, data.length);
}
return;
} // set
set(SqlVarChar data)
{
if (data.isNull())
{
setNull();
}
else
{
/*
** The character data is stored in a byte array in
** the host character-set. A simple binary stream
** will produce the desired output.
*/
setStream(getBinary(data.value, 0, data.length));
}
return;
} // set
/*
** Name: readSqlData
**
** Description:
** Reads a SqlVarChar data value from the current input message.
** Uses the IByteArray interface to load the SqlVarChar data value.
**
** A SqlVarChar data value is composed of a data indicator byte
** which, if not NULL, may be followed by a two byte integer
** length which is followed by a character byte array of the
** indicated length.
**
** Input:
** None.
**
** Output:
** value SQL data value.
**
** Returns:
** void.
**
** History:
** 22-Sep-03 (gordy)
** Created.
*/
public void readSqlData( SqlVarChar value )
{
if ( ! readSqlDataIndicator() ) // Read data indicator byte.
value.setNull(); // NULL data value.
else
{ // Read data value.
int length = readShort(); // Variable length from message.
value.clear();
value.ensureCapacity( length );
readBytes( (IByteArray)value, length );
}
return;
}
/*
** Name: allocateRowBuffer
**
** Description:
** Allocate the column data array for a row and populate
** the array with a SqlData object for each column based
** on the column data type.
**
** Input:
** rsmd Row-set Meta-data.
**
** Output:
** None.
**
** Returns:
** SqlData[] Column data array.
**
** History:
** 14-May-99 (gordy)
** Created.
** 10-May-01 (gordy)
** The character datatypes (CHAR, VARCHAR, LONGVARCHAR) may now
** be sent as UCS2 character arrays in addition to the existing
** Ingres Character Set strings. The DBMS datatype is used to
** distinguish the transport format.
** 31-Oct-02 (gordy)
** Adapted for generic GCF driver.
** 4-Aug-03 (gordy)
** Extracted from readData() to separate row and column processing.
** 22-Sep-03 (gordy)
** Changed to use SQL Data objects to hold column values.
** 6-Jan-04 (thoda04)
** Added BigInt support.
** 16-Jun-06 (gordy)
** ANSI Date/Time data type support.
** 7-Dec-09 (gordy, ported by thoda04)
** Support BOOLEAN columns.
*/
private SqlData[] allocateRowBuffer( AdvanRSMD rsmd )
{
SqlData[] row = new SqlData[ rsmd.count ];
for( int col = 0; col < rsmd.count; col++ )
{
switch( rsmd.desc[ col ].sql_type )
{
case ProviderType.DBNull : row[ col ] = new SqlNull(); break;
case ProviderType.TinyInt : row[ col ] = new SqlTinyInt(); break;
case ProviderType.SmallInt: row[ col ] = new SqlSmallInt(); break;
case ProviderType.Integer : row[ col ] = new SqlInt(); break;
case ProviderType.BigInt: row[ col ] = new SqlBigInt(); break;
case ProviderType.Single : row[ col ] = new SqlReal(); break;
case ProviderType.Double : row[ col ] = new SqlDouble(); break;
case ProviderType.Numeric:
case ProviderType.Decimal : row[ col ] = new SqlDecimal(); break;
case ProviderType.Boolean : row[ col ] = new SqlBool(); break;
case ProviderType.Date : row[col] = new SqlDate(); break;
case ProviderType.Time:
row[col] = new SqlTime(rsmd.desc[col].dbms_type);
break;
case ProviderType.Interval:
case ProviderType.IntervalDayToSecond:
case ProviderType.IntervalYearToMonth:
row[col] = new SqlInterval(rsmd.desc[col].dbms_type);
break;
case ProviderType.DateTime:
switch (rsmd.desc[col].dbms_type)
{
case DBMS_TYPE_IDATE:
row[col] = new IngresDate(conn.osql_dates,
conn.timeValuesInGMT());
break;
default:
row[col] = new SqlTimestamp(rsmd.desc[col].dbms_type);
break;
}
break;
case ProviderType.Binary :
row[ col ] = new SqlByte( rsmd.desc[ col ].length );
break;
case ProviderType.VarBinary :
row[ col ] = new SqlVarByte( rsmd.desc[ col ].length );
break;
case ProviderType.Char :
if ( rsmd.desc[ col ].dbms_type != DBMS_TYPE_NCHAR )
row[ col ] = new SqlChar( msg.getCharSet(),
rsmd.desc[ col ].length );
else
row[ col ] = new SqlNChar(rsmd.desc[col].length / 2 );
break;
case ProviderType.VarChar :
if ( rsmd.desc[ col ].dbms_type != DBMS_TYPE_NVARCHAR )
row[col] = new SqlVarChar(msg.getCharSet(),
rsmd.desc[col].length );
else
row[col] = new SqlNVarChar( rsmd.desc[col].length / 2 );
break;
case ProviderType.LongVarBinary :
row[ col ] = new SqlLongByte( (SqlStream.IStreamListener)this );
break;
case ProviderType.LongVarChar :
if ( rsmd.desc[ col ].dbms_type != DBMS_TYPE_LONG_NCHAR )
row[ col ] = new SqlLongChar( msg.getCharSet(),
(SqlStream.IStreamListener)this );
else
row[ col ] = new SqlLongNChar(
(SqlStream.IStreamListener)this );
break;
default :
if ( trace.enabled( 1 ) )
trace.write( tr_id + ": unexpected SQL type " +
rsmd.desc[ col ].sql_type );
throw SqlEx.get( ERR_GC4002_PROTOCOL_ERR );
}
}
return( row );
}
/*
** Name: write
**
** Description:
** Write a SqlVarChar data value to the current input message.
** Uses the ByteArray interface to send the SqlVarChar data value.
**
** A SqlVarChar data value is composed of a data indicator byte
** which, if not NULL, may be followed by a two byte integer length
** which is followed by a character byte array of the indicated length.
**
** Input:
** value SQL data value.
**
** Output:
** None.
**
** Returns:
** void.
**
** History:
** 1-Dec-03 (gordy)
** Created.
*/
public void write(SqlVarChar value)
{
if (writeSqlDataIndicator(value)) // Data indicator byte.
{
write((short)value.valuelength()); // Array length.
write((IByteArray)value); // Data array
}
return;
}
/*
** Name: set
**
** Description:
** Assign a new data value as a copy of a SqlVarChar data
** value. The data value will be NULL if the input value
** is null, otherwise non-NULL.
**
** Input:
** data SqlVarChar data value to copy.
**
** Output:
** None.
**
** Returns:
** void.
**
** History:
** 1-Dec-03 (gordy)
** Created.
*/
public void set(SqlVarChar data)
{
if (data.isNull())
setNull();
else
{
/*
** The character data is stored in a byte array in
** the host character-set. A simple binary stream
** will produce the desired output.
*/
setStream(getBinary(data.value, 0, data.length));
}
return;
}
/*
** Name: set
**
** Description:
** Assign a new data value as a copy of an existing
** SQL data object. If the input is NULL, a NULL
** data value results.
**
** Input:
** data The SQL data to be copied.
**
** Output:
** None.
**
** Returns:
** void.
**
** History:
** 1-Dec-03 (gordy)
** Created.
*/
public void set(SqlVarChar data)
{
if (data == null || data.isNull())
setNull();
else
{
clear();
put(data.value, 0, data.length);
}
return;
}