Cannot Change Component Property Values

Question

I have the latest version of Redhawk and CentOS, and I have run into a few problems right off the bat. Initially I couldn\'t see the Chalkboard and Sandbox, but that issue w

Answer 1

UPDATE: This is not an issue starting with Java 7u65, 6u85. See ORB Singleton Class Loading Bug

The problem is due to the IDE trying to replace some CORBA-related classes found in the Java bootstrap class path with JacORB-supplied ones. Java briefly disallowed this for a few updates starting with 7u55 and 6u71. JacORB references the need to modify the bootstrap class path in their manual, section 27.1: JacORB Programming Guide

I was able to work around this with my 1.9.0 IDE by modifying the IDE's bootstrap class path to include JacORB and a JacORB dependency. My steps below assume an IDE in /usr/local/redhawk/eclipse. First, extract the JacORB jar from the plugin:

cd /usr/local/redhawk/eclipse/plugins
jar xf org.jacorb_* lib/jacorb.jar

Next, note the filename for the slf4j plugin:

ls org.slf4j.api_*

Now modify /usr/local/redhawk/eclipse/eclipse.ini so that the two jars are prepended to the bootstrap classpath. You'll want to use the absolute path to the two jars. A snippet from mine is below:

...
-vmargs
-Xms40m
-Xmx512m
-XX:MaxPermSize=256m
-Xbootclasspath/p:/usr/local/redhawk/eclipse/plugins/lib/jacorb.jar:/usr/local/redhawk/eclipse/plugins/org.slf4j.api_1.6.4.v20120130-2120.jar
...

If you startup from a console, you may see an error from slf4j, but I haven't found it to be problematic. If you've done it correctly, you should see the Sandbox show up in the SCA Explorer View, just above the Target SDR.