[ http://issues.apache.org/jira/browse/DERBY-776?page=all ] Daniel John Debrunner closed DERBY-776: ---------------------------------------
> Clean up code relating to Object handling in DataValueDescriptor. > ----------------------------------------------------------------- > > Key: DERBY-776 > URL: http://issues.apache.org/jira/browse/DERBY-776 > Project: Derby > Type: Sub-task > Components: SQL > Reporter: Daniel John Debrunner > Assignee: Daniel John Debrunner > Priority: Minor > Fix For: 10.2.0.0 > > In looking at DERBY-438 the error: > ERROR XCL12: An attempt was made to put a data value of type > 'org.apache.derby.impl.jdbc.EmbedBlob' into a data value of type 'BLOB'. > I think is somewhat due to some confusion in the methods that set the value > of a DataValueDescriptor from an object with signature java.lang.Object, > e..g. through DVD.setValue(Object) or PreparedStatement.setObject(). > PS.setObject does not use the setValue(Object) method, but instead, based > upon the object's class, calls one of the PS.setXXX methods, e.g. setLong() > for a java.lang.Long object. This ensures consistent setting of the value, > some of the setValue(Object) methods' behaviour does not match what would > happen if the same object was passed into a setValue() method with the > correct signature. > I think this confusion is historic wrt Cloudscape's support of Java types in > SQL. This taks will clean up some of this code and ensure the roles of the > set methods are clear wrt Object. (e.g. DVD.setValue(Object), > DVD.setObjectForCast). -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
