read

Description:

public long read (Blob blob, long offset, long size)

Reads a chunk of bytes from the BLOB accessible through this into blob.

Parameters:

this

a BlobOp
blob

a Blob to read data to
offset

offset to read from the start of the blob (starts at 0)
size

maximum number of bytes to read.

Returns:

the number of bytes actually read. In case of error, -1 is returned and the provider should have added an error to the connection.