Class: Jnlp::Otrunk

Inherits:
Jnlp
  • Object
show all
Defined in:
lib/jnlp/otrunk.rb

Overview

Jnlp::Otrunk is a subclass of Jnlp::Jnlp that adds SAIL-Otrunk specific methods for execution.of the jnlp locally without using Java Web Start.

It assumes a default main-class of:

net.sf.sail.emf.launch.EMFLauncher2

and by default uses the argument in the original jnlp. Both of these values can be overridden.

Example:

j = Jnlp::Otrunk.new('http://rails.dev.concord.org/sds/2/offering/144/jnlp/540/view?sailotrunk.otmlurl=http://continuum.concord.org/otrunk/examples/BasicExamples/document-edit.otml&sailotrunk.hidetree=false', 'cache'); nil

Instance Method Summary collapse

Instance Method Details

#run_local(argument = @argument, main_class = 'net.sf.sail.emf.launch.EMFLauncher2') ⇒ Object

This will start the jnlp locally in Java without using Java Web Start

This method works in MRI by forking and using exec to start a separate javavm process.

JRuby Note:

In JRuby the jars are required which makes them available to JRuby – but to make this work you will need to also included them on the CLASSPATH.

The convienence method Jnlp#write_local_classpath_shell_script can be used to create a shell script to set the classpath.

If you are using the JRuby interactive console you will need to exclude any reference to a separate jruby included in the jnlp.

Example in JRuby jirb:

j = Jnlp::Otrunk.new('http://rails.dev.concord.org/sds/2/offering/144/jnlp/540/view?sailotrunk.otmlurl=http://continuum.concord.org/otrunk/examples/BasicExamples/document-edit.otml&sailotrunk.hidetree=false', 'cache'); nil
j.write_local_classpath_shell_script('document-edit_classpath.sh', :remove_jruby => true)

Now exit jirb and execute this in the shell:

source document-edit_classpath.sh

Now restart jirb:

j = Jnlp::Otrunk.new('http://rails.dev.concord.org/sds/2/offering/144/jnlp/540/view?sailotrunk.otmlurl=http://continuum.concord.org/otrunk/examples/BasicExamples/document-edit.otml&sailotrunk.hidetree=false', 'cache'); nil
j.run_local

You can optionally pass in jnlp and main-class arguments If these paramaters are not present Otrunk#run_local will use:

net.sf.sail.emf.launch.EMFLauncher2

as the default main class and the default argument in the original jnlp.



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# File 'lib/jnlp/otrunk.rb', line 142

def run_local(argument=@argument, main_class='net.sf.sail.emf.launch.EMFLauncher2')
  if RUBY_PLATFORM =~ /java/
    
    java.lang.Thread.currentThread.setContextClassLoader(JRuby.runtime.jruby_class_loader)
    
    require_resources
    configUrl = URL.new(JavaIO::File.new("dummy.txt").toURL, argument) 
    # configUrl = URL.new("document-edit.config")  
    unless @bundleManager
      @bundleManager = SailCoreBundle::BundleManager.new
      @serviceContext = @bundleManager.getServiceContext
      @bundleManager.setContextURL(configUrl)
      # 
      # Add the <code>bundles</code> configured in this bundles xml file. The format of the file
      # is XMLEncoder
      # 
      @bundleManager.addBundles(configUrl.openStream)
      # 
      # Have all the bundles register their services, and then do any linking
      # to other registered services
      # 
      @bundleManager.initializeBundles
      # 
      # Start the session manager
      # 
      @manager = @serviceContext.getService(SailCoreService::SessionManager.java_class)
    end
    @manager.start(@serviceContext)
  else
    command = "java -classpath #{local_classpath} #{main_class} '#{argument}'"
    $pid = fork { exec command }
  end
end

#stop_local ⇒ Object

This will stop the locally run OTrunk process. This only works in MRI at this point.



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# File 'lib/jnlp/otrunk.rb', line 179

def stop_local
  if RUBY_PLATFORM =~ /java/
    @manager.stop(@serviceContext)
  else
    Process.kill 15, $pid
    Process.wait($pid)
  end
end