private object GetValue(string name, bool oldValue)
{
int[] statusVector = ExtConnection.GetNewStatusVector();
byte[] fieldName = new byte[32];
object value = null;
_database.Charset.GetBytes(name, 0, name.Length, fieldName, 0);
// Marshal structures to pointer
ParamDscMarshaler marshaler = ParamDscMarshaler.Instance;
IntPtr valuePtr = marshaler.MarshalManagedToNative();
bool result = SafeNativeMethods.isc_get_trigger_field(
statusVector,
(oldValue) ? 0 : 1,
fieldName,
valuePtr);
value = marshaler.MarshalNativeToManaged(_database.Charset, valuePtr);
marshaler.CleanUpNativeData(ref valuePtr);
ExtConnection.ParseStatusVector(statusVector);
return(value);
}
private void ParseStatusVector(int[] statusVector)
{
IscException ex = ExtConnection.ParseStatusVector(statusVector);
if (ex != null && !ex.IsWarning)
{
throw ex;
}
}
public int GetTriggerAction()
{
int[] statusVector = ExtConnection.GetNewStatusVector();
int action = SafeNativeMethods.isc_get_trigger_action(statusVector);
ExtConnection.ParseStatusVector(statusVector);
return(action);
}
protected override void Cancel()
{
lock (this.db)
{
int[] statusVector = ExtConnection.GetNewStatusVector();
SafeNativeMethods.isc_cancel_blob(statusVector, ref this.blobHandle);
ExtConnection.ParseStatusVector(statusVector);
}
}
public string GetTableName()
{
int[] statusVector = ExtConnection.GetNewStatusVector();
byte[] tableName = new byte[255];
int count = SafeNativeMethods.isc_get_trigger_table_name(statusVector, tableName, 255);
ExtConnection.ParseStatusVector(statusVector);
return(_database.Charset.GetString(tableName, 0, count));
}
protected override void Close()
{
lock (_db)
{
int[] statusVector = ExtConnection.GetNewStatusVector();
SafeNativeMethods.isc_close_blob(statusVector, ref _blobHandle);
ExtConnection.ParseStatusVector(statusVector);
}
}
protected override void PutSegment(byte[] buffer)
{
lock (this.db)
{
int[] statusVector = ExtConnection.GetNewStatusVector();
SafeNativeMethods.isc_put_segment(
statusVector,
ref this.blobHandle,
(short)buffer.Length,
buffer);
ExtConnection.ParseStatusVector(statusVector);
}
}
internal void ParseStatusVector(int[] statusVector)
{
IscException ex = ExtConnection.ParseStatusVector(statusVector);
if (ex != null)
{
if (ex.IsWarning)
{
this.warningMessage(ex);
}
else
{
throw ex;
}
}
}
protected override void Open()
{
lock (this.db)
{
int[] statusVector = ExtConnection.GetNewStatusVector();
int dbHandle = this.db.Handle;
int trHandle = this.transaction.Handle;
SafeNativeMethods.isc_open_blob2(
statusVector,
ref dbHandle,
ref trHandle,
ref this.blobHandle,
ref this.blobId,
0,
new byte[0]);
ExtConnection.ParseStatusVector(statusVector);
}
}
protected override void Create()
{
lock (this.db)
{
int[] statusVector = ExtConnection.GetNewStatusVector();
int dbHandle = this.db.Handle;
int trHandle = this.transaction.Handle;
SafeNativeMethods.isc_create_blob2(
statusVector,
ref dbHandle,
ref trHandle,
ref this.blobHandle,
ref this.blobId,
0,
new byte[0]);
ExtConnection.ParseStatusVector(statusVector);
this.RblAddValue(IscCodes.RBL_create);
}
}