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As the knowledgecenter states in https://www.ibm.com/support/knowledgecenter/SSEPGG_11.5.0/com.ibm.db2.luw.wn.doc/doc/c_ds_clients_drivers_11-5-5.html
"JCC supports new APIs from JDBC 4.3 specification with this release. ... JDBC 4.3 specification support in JCC driver is partial to some extent.", we need full support of the JDBC 4.3 specification.
Needed by Date | Jan 31, 2021 |
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FWIW, it seems that LocalDate is now supported in 11.5.8, though metaData.getJDBCMajorVersion(), metaData.getJDBCMinorVersion() still reports 4,1 and I can't seem to find anything in the 11.5.8 whats new section. Also, status of this Aha is still Future consideration. I'll do some more investigation before popping the champagne;-)
[....]
int x = metaData.getJDBCMajorVersion();
int y = metaData.getJDBCMinorVersion();
System.out.println(x);
System.out.println(y);
stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("values current_date");
rs.next();
System.out.println(rs.getDate(1));
rs = stmt.executeQuery("values current_date");
rs.next();
System.out.println(rs.getObject(1, LocalDate.class));
[...]
outputs:
java -cp .:db2jcc4.jar Dummy
4
1
2022-10-27
2022-10-27
While looking at this StackOverflow page https://stackoverflow.com/questions/51368395/convert-java-sql-timestamp-to-java-8-zoneddatetime the support of java.time.Offset*, java.time.Local* should be included in the driver as mappable data types. See also this visual
Lack of LocalDate/LocalDateTime support is a big issue.
If nothing else, at least support for LocalDate would be very useful.