require "java"

URLClassLoader = java.net.URLClassLoader 
JFile = java.io.File
JURL = java.net.URL
JClass = java.lang.Class
JObject = java.lang.Object

# make file objects out of strings 
jFile1 = JFile.new("/someplace/wrapper-sesame2.jar")
jFile2 = JFile.new("/someplace/openrdf-sesame-2.0-alpha4-onejar.jar")

#jFile1 = JFile.new("/home/metaman/workspaces/deri-workspace/activerdf/activerdf-sesame/ext/wrapper-sesame2.jar")
#jFile2 = JFile.new("/home/metaman/workspaces/deri-workspace/activerdf/activerdf-sesame/ext/openrdf-sesame-2.0-alpha4-onejar.jar")

# make an array of URL, which contains the URLs corresponding to the files
uris = JURL[].new(2)
uris[0] = jFile1.toURL
uris[1] = jFile2.toURL

# this is our custom class loader, yay!
myClassLoader = URLClassLoader.new(uris)

# and now we want our custom class loader to actually do some work
# --> fetch us the class object for the specified class name, 
# intialize that class object, and use the specified class loader for it
classWrapper = JClass.forName("org.activerdf.wrapper.sesame2.WrapperForSesame2", true, myClassLoader)

# cool, so we got that class object, and it seems pretty valid: 
puts classWrapper.java_class
# => java.lang.Class

# put this does not work !
myWrapperInstance = classWrapper.new

# instead we have to do this. this points to the guess that this is in fact 
# not a class object but a constuctor object
# maybe this is the first bug here? 
myWrapperInstance = classWrapper.new_instance

# okay, so far so good. the real problem is constructing the class with an 
# argument

constructorArgs = JObject[].new(1)
constructorArgs[0] = "/someplace/sesame-rep.s2"
#constuctorArgs[0] = "/home/metaman/workspaces/deri-workspace/sioc-playground/data/sesame-rep.s2"

myWrapperInstance = classWrapper.new_instance(constructorArgs) 
# NameError: no method 'newInstance' with arguments matching [[Ljava.lang.Object;]
#        from /mnt/small/jruby-workspace/jruby-trunk/src/builtin/javasupport.rb:433:in `matching_method'
#        from (irb):1:in `binding'

# If I would have just said this: 
# WrapperForSesame2 = org.activerdf.wrapper.sesame2.WrapperForSesame2
# then I could say: 
# myWrapperInstance = WrapperForSesame2.new("/someplace/sesame-rep.s2")
# no problem there. 

# --> this seems to be the second bug?