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Registering java components

As there are many ways to Rom, there many ways to register a component. But what all ways have in common, is that an ImplementationRegistration instance is needed.

So, a service can be registered via star basic creating the service ImplementationRegistration and calling the method registerImplementation.

Basic example: 

regImpl = createUnoService("com.sun.star.registry.ImplementationRegistration")
regImpl.registerImplementation("com.sun.star.loader.Java2", "file:///home/testComponent.jar", null)

Another way is to use the binary UNO bound tool regcomp. This tool needs to create a java virtual machine, which it does by the service JavaVirtualMachine.

Binary exmaple (UNIX):

setenv OO_JAVA_PROPERTIES RuntimeLib=/usr/java1.2/jre/lib/sparc/native_threads/libjvm.so
setenv CLASSPATH $UDK/ridljar:$UDK/jurt.jar:$UDK/java_uno.jar 
regcomp -register -br applicat.rdb -c file:///home/testComponent.jar -l com.sun.star.loader.Java2

Unfortunatley this service JavaVirtualMachine often needs some hints, to find the java installation to use. To avoid this, there is another java based tool.

Java example: 


java com.sun.star.tools.uno.RegComp applicat.rdb register file:///home/testComponent.jar 
  com.sun.star.loader.Java2