public override byte[] GetSlice(int sliceLength)
{
int[] statusVector = FesConnection.GetNewStatusVector();
int dbHandle = this.db.Handle;
int trHandle = this.transaction.Handle;
ArrayDescMarshaler marshaler = ArrayDescMarshaler.GetInstance();
IntPtr arrayDesc = marshaler.MarshalManagedToNative(this.Descriptor);
byte[] buffer = new byte[sliceLength];
FbClient.isc_array_get_slice(
statusVector,
ref dbHandle,
ref trHandle,
ref this.handle,
arrayDesc,
buffer,
ref sliceLength);
// Free memory
marshaler.CleanUpNativeData(ref arrayDesc);
FesConnection.ParseStatusVector(statusVector);
return(buffer);
}
private void ParseStatusVector(int[] statusVector)
{
IscException ex = FesConnection.ParseStatusVector(statusVector);
if (ex != null && !ex.IsWarning)
{
throw ex;
}
}
protected override void Cancel()
{
lock (this.db)
{
int[] statusVector = FesConnection.GetNewStatusVector();
FbClient.isc_cancel_blob(statusVector, ref this.blobHandle);
FesConnection.ParseStatusVector(statusVector);
}
}
protected override void PutSegment(byte[] buffer)
{
lock (this.db)
{
int[] statusVector = FesConnection.GetNewStatusVector();
FbClient.isc_put_segment(
statusVector,
ref this.blobHandle,
(short)buffer.Length,
buffer);
FesConnection.ParseStatusVector(statusVector);
}
}
internal void ParseStatusVector(int[] statusVector)
{
IscException ex = FesConnection.ParseStatusVector(statusVector);
if (ex != null)
{
if (ex.IsWarning)
{
this.warningMessage(ex);
}
else
{
throw ex;
}
}
}
public void Detach()
{
lock (this)
{
if (this.TransactionCount > 0)
{
throw new IscException(IscCodes.isc_open_trans, this.TransactionCount);
}
int[] statusVector = FesConnection.GetNewStatusVector();
int dbHandle = this.Handle;
FbClient.isc_detach_database(statusVector, ref dbHandle);
this.handle = dbHandle;
FesConnection.ParseStatusVector(statusVector);
}
}
protected override void Open()
{
lock (this.db)
{
int[] statusVector = FesConnection.GetNewStatusVector();
int dbHandle = this.db.Handle;
int trHandle = this.transaction.Handle;
FbClient.isc_open_blob2(
statusVector,
ref dbHandle,
ref trHandle,
ref this.blobHandle,
ref this.blobId,
0,
new byte[0]);
FesConnection.ParseStatusVector(statusVector);
}
}
public override void PutSlice(System.Array sourceArray, int sliceLength)
{
int[] statusVector = FesConnection.GetNewStatusVector();
int dbHandle = this.db.Handle;
int trHandle = this.transaction.Handle;
ArrayDescMarshaler marshaler = ArrayDescMarshaler.GetInstance();
IntPtr arrayDesc = marshaler.MarshalManagedToNative(this.Descriptor);
// Obtain the System of type of Array elements and
// Fill buffer
Type systemType = this.GetSystemType();
byte[] buffer = new byte[sliceLength];
if (systemType.IsPrimitive)
{
Buffer.BlockCopy(sourceArray, 0, buffer, 0, buffer.Length);
}
else
{
buffer = this.EncodeSlice(this.Descriptor, sourceArray, sliceLength);
}
FbClient.isc_array_put_slice(
statusVector,
ref dbHandle,
ref trHandle,
ref this.handle,
arrayDesc,
buffer,
ref sliceLength);
// Free memory
marshaler.CleanUpNativeData(ref arrayDesc);
FesConnection.ParseStatusVector(statusVector);
}
protected override void Create()
{
lock (this.db)
{
int[] statusVector = FesConnection.GetNewStatusVector();
int dbHandle = this.db.Handle;
int trHandle = this.transaction.Handle;
FbClient.isc_create_blob2(
statusVector,
ref dbHandle,
ref trHandle,
ref this.blobHandle,
ref this.blobId,
0,
new byte[0]);
FesConnection.ParseStatusVector(statusVector);
this.RblAddValue(IscCodes.RBL_create);
}
}