Damm. I always thought cross compilation of Java worked (i.e. compile in one version with the target of a previous version). I guess it worked in my code because I did not use any of the new features.
Thank you very much Shawn. No, I'm not running SolrCloud, but I wanted to use the new features in SolrJ particularly regarding the suggestions. Thank you for confirming this though. O. O. Shawn Heisey-2 wrote > Erick is right. It won't even compile. When the jump to Java 7 was > made between the 4.7 and 4.8 releases, most of the source code was > reviewed and certain pieces in a very large number of files were updated > to code that only compiles in Java 7. Many of those changes happened in > SolrJ. This was done because the Java 7 code is generally more reliable > and easier to maintain. > > Here's what happens when I import the 4.10 branch into eclipse and > change the compiler compliance level to 1.6. Notice the large number of > red marks that are on source packages and java files: > > https://www.dropbox.com/s/kktym6tsdi3iu36/solrj-4.10-java6-errors.png?dl=0 > > Your best bet is to download the 4.7 version and try to use that. This > is the last release that will work in Java 6: > > http://archive.apache.org/dist/lucene/solr/4.7.2/ > > If you're NOT running SolrCloud, chances are VERY good that you can get > this to work with zero problems. If you're running SolrCloud on version > 4.10 and try to use SolrJ 4.7, I would not be surprised to learn that > they are not compatible. It might work well ... I have never tried it. > > The nature of the changes for Java 7 are such that it will be extremely > time-consuming to backport changes between 4.7.2 and 4.10.4 to the older > source code. > > Thanks, > Shawn -- View this message in context: http://lucene.472066.n3.nabble.com/Compiling-SolrJ-for-Java-6-tp4238068p4238095.html Sent from the Solr - User mailing list archive at Nabble.com.
