Bug #5578
Metacat compilation should target Java 1.6
100%
Description
When running ant to compile Metacat, the javac command should include the parameter -target 1.6
See http://stackoverflow.com/questions/10382929/unsupported-major-minor-version-51-0
To fix the actual problem you should try to either run the Java code with a newer version of Java JRE or specify the target parameter to the Java compiler to instruct the compiler to create code compatible with earlier Java versions.
For example, in order to generate class files compatible with Java 1.4, use the following command line:
javac -target 1.4 HelloWorld.java
History
#1 Updated by Robert Waltz over 9 years ago
- Product Version changed from * to 1.4.0
#2 Updated by Robert Waltz over 9 years ago
- Due date changed from 2014-07-19 to 2014-08-02
- Target version changed from 2014.28-Block.4.2 to 2014.30-Block.4.3
#3 Updated by Jing Tao over 9 years ago
- Status changed from New to Closed
We added the target 1.6 in both Metacat svn trunk and 2.4 branch. Also we released a another product - utility which will be used in Metacat. This release of utilities will target java 1.6 as well.
I tested Metacats built from both trunk and branch 2.4 by java 1.7. The war files was running under both jre 1.7 and 1.6 (tomcat 7). All of them worked.
#4 Updated by Skye Roseboom over 9 years ago
- Target version changed from 2014.30-Block.4.3 to Release Backlog
- Due date changed from 2014-08-02 to 2014-09-02
#5 Updated by Robert Waltz over 9 years ago
- Product Version changed from 1.4.0 to *
#6 Updated by Jing Tao over 9 years ago
- Due date changed from 2014-09-02 to 2014-09-24
#7 Updated by Dave Vieglais over 9 years ago
- Target version changed from Release Backlog to CCI-1.4.1
#8 Updated by Robert Waltz over 9 years ago
- Target version changed from CCI-1.4.1 to CCI-1.5.0
#9 Updated by Robert Waltz over 9 years ago
- Status changed from Closed to In Progress
#10 Updated by Robert Waltz over 9 years ago
- Status changed from In Progress to Testing
#11 Updated by Jing Tao over 9 years ago
- Due date changed from 2014-09-24 to 2014-11-21
Metacat-index showes the error on the startup in java 1.6 env:
[ERROR]: Application.run Error loading class [org.dataone.cn.indexer.parser.MergeSolrField] for bean with name 'eml.abstract' defined in class path resource [application-context-eml-base.xml]: problem with class file or dependent class; nested exception is java.lang.UnsupportedClassVersionError: org/dataone/cn/indexer/parser/MergeSolrField : Unsupported major.minor version 51.0 (unable to load class org.dataone.cn.indexer.parser.MergeSolrField) [edu.ucsb.nceas.metacat.index.ApplicationController]
#12 Updated by Jing Tao over 9 years ago
- Status changed from Testing to Closed
- Due date changed from 2014-11-21 to 2014-11-25
Some pom.xml files, such as d1-cn-index-processor on the release branches were modified to compatible with java 1.6.
