[Monetdb-developers] XRPCwrapper fails to compile with java 1.4

Martin Kersten Martin.Kersten at cwi.nl
Mon Oct 15 10:11:51 CEST 2007

Fabian Groffen wrote:
> On 15-10-2007 09:29:29 +0200, Stefan Manegold wrote:
>> Hoi,
>> apparently, the new XPRCwrapper code fails to compile with java 1.4 (our
>> RedHat 4 WS machine, titan, is the only testing machine that still has only
>> java 1.4, all others have java 1.5); for details see below and/or
>> http://monetdb.cwi.nl/testing/projects/monetdb/Stable/pathfinder/.ntv.64.64.d-RedHat4WS/make.out
>> Question:
>> Assuming that there is no easy way to make the new XRPC warpper code java
>> 1.4 compliant: should we modify (tighten) our requirements accordingly,
>> i.e., requiring (only) java 1.5 instead of (at least) java 1.4 to build
>> MonetDB* (java 1.6 is not (yet?) supported)?
> My analysis:
> JDBC needs 1.4<=java<~1.5
> XRPCwrapper needs java>=1.5 due to usage of XML standard libraries
Intersection is 1.5 ? and sufficient to work?

> introduced in Java 1.5  (See the API, which has @since.)
> Jennie's build file doesn't correctly state this dependency, but also
> the JDBC configure check is invalid for XRPCwrapper.
> JDBC can't use java>=1.6 (yet) because 1.6 introduced a new interface
> version of JDBC, v4, which backwards incompatible with the currently
> implemented interface v3.  I once started on a branch to work around
> this a bit, but it is just a lot of work and I guess my code changes out
> of date by now given the code was fixed in some points.
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