Re: [Engine-devel] Revisiting Java7

----- Original Message ----- > From: "Itamar Heim" <iheim(a)redhat.com&gt; > To: "Allon Mureinik" <amureini(a)redhat.com&gt; > Cc: "engine-devel" <engine-devel(a)ovirt.org&gt; > Sent: Tuesday, December 4, 2012 1:13:49 PM > Subject: Re: [Engine-devel] Revisiting Java7 > > On 12/04/2012 11:20 AM, Allon Mureinik wrote: >> >> >> ----- Original Message ----- >>> From: "Itamar Heim" <iheim(a)redhat.com&gt; >>> To: "Allon Mureinik" <amureini(a)redhat.com&gt; >>> Cc: "engine-devel" <engine-devel(a)ovirt.org&gt; >>> Sent: Tuesday, December 4, 2012 1:40:10 AM >>> Subject: Re: [Engine-devel] Revisiting Java7 >>> >>> On 12/03/2012 04:03 PM, Allon Mureinik wrote: >>>> Hi guys, >>>> >>>> Earlier today, Java6 compatibility was broken >>>> (http://gerrit.ovirt.org/#/c/9430/). >>>> This was picked up on pretty quickly, and easily fixed >>>> (http://gerrit.ovirt.org/#/c/9666/). >>>> >>>> However, I think this is a good opportunity to revisit our policy >>>> towards Java 7. >>>> Currently, we have an "odd" setup, where we recommend running a >>>> compiling /with/ Java 7 [1] but comply to Java 6 language level >>>> [2] and JDK [3]. >>>> Inevitably, mistakes like the that happened today will happen. >>>> >>>> I know we're holding back due to GWT issues, but looking forward >>>> to >>>> oVirt 4.0, is Java 7 on our roadmap? >>> >>> what was the GWT issue? >> GWT 2.3 that we use doesn't support java 7 syntax. >> The latest version, 2.5, doesn't either. >> I'm not sure, however, this is a good reason to enforce the java 6 >> limitation on the entire project (including backed, rest, etc.) > > i agree. you can limit it to the parts used by GWT for now. The major advantage to move to java7 is the try-with-resources statement. If we can do this for 3.2 it will be great. From what I understand from Allon, the only noisy change is to move the common and compat out of the backend directory into its own top-level directory, so we can apply a different maven policy on these two easily. This way the common/compat and frontend will be built using 1.6 and backend will be built using 1.7.