Derby should throw a better error message if a BLOB/CLOB column is accessed
more than once
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Key: DERBY-3583
URL: https://issues.apache.org/jira/browse/DERBY-3583
Project: Derby
Issue Type: Improvement
Reporter: Kathey Marsden
Priority: Minor
With the DERBY-2892 fix revision 642974, users can no longer access a
BLOB/CLOB column more than once for each row. Currently the error message is
XJ217 - You cannot invoke other java.sql.Clob/java.sql.Blob methods after
calling the free() method or after the Blob/Clob's transaction has been
committed or rolled back.
I don't know that that makes sense given the user called getString()
For getCharacterStream()/getBinaryStream() there is no error on the call, just
an IOException on the read.
We should throw a clearer error message, that the user is not allowed to make
multiple getXXX calls on a BLOB/CLOB column for each row.
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