This section describes reading and writing BLOB data with adapters.
The in-process adapters supplied by Sybase CEP handle the BLOB data type. When data is read or written in CSV format (for example, via the ReadFromCSVFile adapter or the WriteToCSVFile adapter), each BLOB is represented as a string of hexadecimal digits in which each byte of BLOB data is represented by 2 hexadecimal digits and thus 2 bytes. Because CSV files themselves are limited to 2GB (Sybase CEP cannot read or write files larger than 2GB), the effective limit on the size of a BLOB in a CSV file is 1,073,741,823 bytes, or 1GB.