The delegate flag in sun-web.xml information can be found in
http://docs.sun.com/app/docs/doc/820-7693/bearq?l=en&a=view
Shing Wai Chan
On 6/23/2010 7:18 AM, Sanjeeb Sahoo wrote:
> I think I know what's going on here. Since GlassFish is already
> running on top of Felix, when you are trying to load Felix, Felix
> actually gets loaded by one of GlassFish class loader that's parent of
> web app class loader. The class loader that loads Felix classes does
> not really have visibility to Java EE APIs like javax.servlet. So,
> even if you set
>
> org.osgi.framework.bundle.parent=framework
>
> it's not making any difference. You may like to launch Felix using a
> custom class loader in OsgiManager.java:
>
> ClassLoader cl = new
> ClassLoader(Thread.currentThread().getContextClassLoader()) {
> protected Class loadClass(String className) throws
> ClassNotFoundException() {
> if(className.startsWith("org.apache.felix")) {
> URL url =
> findResource(convertClassNameToResource(className));
> if(url != null) {
> byte[] bytes = readData(url);
> defineClass(...);
> }
> }
> return super.loadClass(className);
> }
> }
>
> Use this class to load org.apache.felix.main.Main and FrameworkFactory
> class. I understand this is really not an elegant solution.
>
> An easier option is to switch off delegation flag in web app class
> loader. You can do it by having a suitable sun-web.xml file in your
> web app. Just google for it.
>
> I understand you don't want to depend on specific container behavior,
> but can you detect that your code is running inside an OSGi enabled
> container and use that instead of launching a new one? e.g., the code
> below gets you a BundleContext object in glassfish:
>
> org.osgi.framework.BundleReference ref =
> (BundleReference)javax.servlet.class.getClassLoader();
> Bundle b = ref.getBundle();
> BundleContext bctx = b.getBundleContext();
> Use it to load your management bundle and pass control to it.
>
> Thanks,
> Sahoo
>
> p.s: I have not really thought hard about this problem - so I am not
> sure if all these will work or not in reality.
>
> On Wednesday 23 June 2010 02:49 PM, glassfish_at_javadesktop.org wrote:
>> Thanks for your answer.
>>
>> This is the Felix configuration file I'm currently using:
>>
>> ##############
>> org.osgi.framework.storage.clean=onFirstInit
>> org.osgi.framework.bundle.parent=framework
>> felix.bootdelegation.implicit=true
>> felix.log.level=4
>> org.apache.felix.http.debug=true
>> osgi.shell.telnet.port=7789
>> ##############
>>
>> Reading the glassfish log what i can see is that Apache Felix HTTP
>> Bridge doesn't load with such errror:
>>
>> [#|2010-06-23T10:56:13.312+0200|INFO|glassfish3.0.1|javax.enterprise.system.std.com.sun.enterprise.v3.services.impl|_ThreadID=44;_ThreadName=Thread-1;|ERROR:
>> Error starting
>> file:/C:/glassfishv3/glassfish/domains/domain1/applications/webapp.felix/WEB-INF/bundles/org.apache.felix.http.bridge-2.0.4.jar
>> (org.osgi.framework.BundleException: Unresolved constraint in bundle
>> org.apache.felix.http.bridge [3]: package; (package=javax.servlet))|#]
>>
>> [#|2010-06-23T10:56:13.312+0200|SEVERE|glassfish3.0.1|javax.enterprise.system.std.com.sun.enterprise.v3.services.impl|_ThreadID=44;_ThreadName=Thread-1;|org.osgi.framework.BundleException:
>> Unresolved constraint in bundle org.apache.felix.http.bridge [3]:
>> package; (package=javax.servlet)
>> at org.apache.felix.framework.Felix.resolveBundle(Felix.java:3263)
>> at org.apache.felix.framework.Felix.startBundle(Felix.java:1597)
>> at
>> org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1077)
>> at
>> org.apache.felix.framework.StartLevelImpl.run(StartLevelImpl.java:264)
>> at java.lang.Thread.run(Thread.java:619)
>> |#]
>>
>> I've also tried to put "app" as org.osgi.framework.bundle.parent
>> value in place of "framework" but nothing changes.
>>
>> Adding following line to Felix configuration file:
>>
>> org.osgi.framework.system.packages.extra=javax.servlet,
>> javax.servlet.http
>>
>> doesn't help :(
>>
>> Have you any other suggestions?
>>
>> Reason why I want to embed Felix in my WebApp is that I want to use
>> it as a plugin framework and I need it to be independent from the
>> underlying application server.
>>
>> Thanks in advance
>>
>>> You must have configured system bundle to export
>>> javax.servlet package
>>> for embedded Felix. What class loader have you
>>> configured as the parent
>>> class loader for embedded Felix? Try setting
>>>
>>> org.osgi.framework.bundle.parent=framework
>>>
>>> in your felix config file.
>>>
>>> Having said that why would you embed Felix in your
>>> webapp deployed in
>>> GlassFish v3 when GlassFish v3 is already deployed
>>> inside Felix? Your
>>> web app can already be deployed as an OSGi bundle
>>> allowing it to take
>>> advantage of both Java EE and OSGi APIs.
>>>
>>> Sahoo
>>>
>> [Message sent by forum member 'dboltri']
>>
>> http://forums.java.net/jive/thread.jspa?messageID=475486
>>
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>
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