How is ResultSet.getString() SUPPOSED to return BINARY types?
Hello All:
I got a legacy code to support. The code uses ResultSet.getString() to retrieve BINARY data. ORACLE JDBC driver converts binary data to their hexadecimal representation. It also behaves "correctly" in this sense when I use setString() on prepared statement for BINARY field: it converts valid hexadecimal strings to binary data and rejects strings which contains non-HEX digit characters with SQLException (btw if I give it an odd number of hexadecimal digits, it adds a zero digits FROM THE LEFT e.g. DDDDDDDDDDDDDDDDDDDDDDD becomes 0DDDDDDDDDDDDDDDDDDDDDDD).
My question is: is all this behavior documented somewhere in JDBC specification and if not how other databases and drives behave on this matter. The code will be possibly used with other databases and I want to know if I can expect some definite behaviour or this is all implementation-specific? I found in JDBC specs that getString() can be used for BINARY data -- but not what it is supposed to return? Even Oracle JDBC documentation does not specify the behavior I discovered -- it just works like that but can I be sure it will be preserved in further versions? Should we raise an issue with Sun to clarify the JDBC specs?
Any ideas/references? Please share your experience with different databases/drivers. Mine is Oracle 8.0.5.1.0, JDBC driver version is 9.0.1.0.0.
Pavel
You can download the JDBC docs from the sun site. I didn't find anything in it which documented the behavior you indicated.
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