Hi Toni!
Indeed its not possible to find the classes on disk but also getting
"foo/Hello.class" with the Classloader doesn't return any content
zz>val clazz = classes(0)
clazz: java.lang.Class[_] = class foo.Hello
zz>clazz.getClassLoader.getResourceAsStream("foo/Hello.class")
res34: java.io.InputStream = java.util.zip.ZipFile$1@46b48bc5
zz>import scala.io.Source
import scala.io.Source
zz>Source.fromInputStream(res34).length
res36: Int = 0
I'll have to get those bytes from the "virtual directory" used by the
compiler.
Cheers,
Reto
On Fri, Jan 21, 2011 at 3:31 PM, Toni Menzel <[email protected]> wrote:
> Hi Reto!
>
> Mmhh.. interesting. Though did not follow your step myself did you look
> into the bundle that has been generated ?
> I mean, you can dump it (its an inputstream) to a file and have a look ?
> Guess its the only way to see whats really happening. Also look if a bundle
> looks clean (technically) when not adding anything. Or at least nothing you
> declared just at runtime.
> Speaking of that i might see the problem. Tinybundles takes a Class type in
> "addClass" but just for API brevity. It really resolves the fully qualified
> name and tried to find it on disk.
> The funny full qualified class name
> (ine6$object$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$HelloWorld.class) speaks for
> itself - but its not about aesthetics probably ;)
>
> Can you load the (generated) bundle in your IDE (and use the aforementioned
> class) ?
>
> Toni
>
> On Fri, Jan 21, 2011 at 3:14 PM, Reto Bachmann-Gmuer <
> [email protected]> wrote:
>
>> Goal: create and install a bundle at runtime from the clerzza-console
>>
>> Starting point: Clerezza tdb launcher with additional TinyBundle and its
>> dependencies installed
>>
>> Welcome to the Apache Clerezza Console
>> Console is based on Scala version 2.8.1.final (OpenJDK 64-Bit Server VM,
>> Java 1.6.0_20).
>> Type in expressions to have them evaluated.
>> Hint: To execute a Felix-Shell command prepend ":f "
>> Type :help for more information.
>> zz>import org.ops4j.pax.swissbox.tinybundles.core.TinyBundles._
>> import org.ops4j.pax.swissbox.tinybundles.core.TinyBundles._
>> zz>val nb = newBundle()
>> nb: org.ops4j.pax.swissbox.tinybundles.core.TinyBundle =
>> org.ops4j.pax.swissbox.tinybundles.core.intern.TinyBundleImpl@61e14b67
>> zz>class HelloWorld { def hello = println("hello") }
>> defined class HelloWorld
>> zz>nb.add(classOf[HelloWorld])
>> res0: org.ops4j.pax.swissbox.tinybundles.core.TinyBundle =
>> org.ops4j.pax.swissbox.tinybundles.core.intern.TinyBundleImpl@61e14b67
>> zz>nb.set("Some-Key", "some value")
>> res1: org.ops4j.pax.swissbox.tinybundles.core.TinyBundle =
>> org.ops4j.pax.swissbox.tinybundles.core.intern.TinyBundleImpl@61e14b67
>> zz>import java.io._
>> import java.io._
>> zz>nb.add("test-file", new ByteArrayInputStream("some
>> test-data".getBytes("utf-8")))
>> res2: org.ops4j.pax.swissbox.tinybundles.core.TinyBundle =
>> org.ops4j.pax.swissbox.tinybundles.core.intern.TinyBundleImpl@61e14b67
>> zz>val in = nb.build(withBnd())
>> in: java.io.InputStream = java.io.PipedInputStream@5906edd5
>> zz>val myBundle = bundleContext.installBundle("myBundle", in)
>> myBundle: org.osgi.framework.Bundle =
>> BuildByTinyBundlestinybundles7983922728161488712UID [139]
>> zz>val entries = myBundle.findEntries("/", null, true)
>> entries: java.util.Enumeration[_] =
>> org.apache.felix.framework.EntryFilterEnumeration@3aa0d67c
>> zz>while (entries.hasMoreElements) { out println("Entry:
>> "+entries.nextElement) }
>> Entry: bundle://139.0:0/META-INF/
>> Entry: bundle://139.0:0/META-INF/MANIFEST.MF
>> Entry:
>> bundle://139.0:0/line6$object$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$HelloWorld.class
>> zz>headers(myBundle)
>> Bnd-LastModified = 1295608733169
>> Built-By = reto
>> Bundle-ManifestVersion = 2
>> Bundle-Name = BuildByTinyBundlestinybundles7983922728161488712UID
>> Bundle-SymbolicName = BuildByTinyBundlestinybundles7983922728161488712UID
>> Bundle-Version = 0
>> Created-By = 1.6.0_20 (Sun Microsystems Inc.)
>> Generated-By-Ops4j-Pax-From =
>> BuildByTinyBundlestinybundles7983922728161488712UID
>> Manifest-Version = 1.0
>> Originally-Created-By = pax-swissbox-tinybundles-1.3.0
>> Private-Package = .
>> Some-Key = some value
>> SwissboxTinybundlesVersion = pax-swissbox-tinybundles-1.3.0
>> Tool = Bnd-0.0.313
>> zz>myBundle.loadClass("line6$object$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$HelloWorld")
>>
>> java.lang.ClassFormatError: Truncated class file
>> at java.lang.ClassLoader.defineClass1(Native Method)
>> at java.lang.ClassLoader.defineClass(ClassLoader.java:634)
>> at
>> org.apache.felix.framework.ModuleImpl$ModuleClassLoader.findClass(ModuleImpl.java:1874)
>> at
>> org.apache.felix.framework.ModuleImpl.findClassOrResourceByDelegation(ModuleImpl.java:720)
>> at
>> org.apache.felix.framework.ModuleImpl.access$300(ModuleImpl.java:73)
>> at
>> org.apache.felix.framework.ModuleImpl$ModuleClassLoader.loadClass(ModuleImpl.java:1735)
>> at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
>> at
>> org.apache.felix.framework.ModuleImpl.getClassByDelegation(ModuleImpl.java:638)
>> at org.apache.felix.framework.Felix.loadBundleClass(Felix.java:1599)
>> at
>> org.apache.felix.framework.BundleImpl.loadClass(BundleImpl.java:90...zz>
>> zz>
>>
>>
>> Well not the surprising that this class created in the shell creates
>> problems. A bit surpring that the resource "test-file" isn't in the list.
>>
>> Let's try compiling a class using the compiler service
>> zz>import org.apache.clerezza.scala.scripting.CompilerService
>> import org.apache.clerezza.scala.scripting.CompilerService
>> zz>val cs = $[CompilerService]
>> cs: org.apache.clerezza.scala.scripting.CompilerService =
>> org.apache.clerezza.scala.scripting.CompilerService@54075697
>> zz>val source = """ package foo
>> | class Hello() {
>> | def say() { println("hello")}
>> | }
>> | """
>> zz>val chars = source.toCharArray
>> chars: Array[Char] =
>> Array( , p, a, c, k, a, g, e, , f, o, o,
>> , c, l, a, s, s, , H, e, l, l, o, (, ), , {,
>> , d, e, f, , s, a, y, (, ), , {, , p, r, i, n, t, l, n, (, ", h, e, l,
>> l, o, ", ), , },
>> , },
>> )
>> zz>val classes = cs.compile(List(chars))
>> classes: List[Class[_]] = List(class foo.Hello)
>> zz>val tinyFoo = newBundle()
>> tinyFoo: org.ops4j.pax.swissbox.tinybundles.core.TinyBundle =
>> org.ops4j.pax.swissbox.tinybundles.core.intern.TinyBundleImpl@6ca68dbd
>> zz>val fooStream = tinyFoo.build(withBnd())
>> fooStream: java.io.InputStream = java.io.PipedInputStream@fd855ae
>> zz>val fooBundle = bundleContext.installBundle("fooBundle",
>> fooStream)
>> fooBundle: org.osgi.framework.Bundle =
>> BuildByTinyBundlestinybundles3268593457443402016UID [145]
>> zz>headers(fooBundle)
>> Bnd-LastModified = 1295618427023
>> Built-By = reto
>> Bundle-ManifestVersion = 2
>> Bundle-Name = BuildByTinyBundlestinybundles3268593457443402016UID
>> Bundle-SymbolicName = BuildByTinyBundlestinybundles3268593457443402016UID
>> Bundle-Version = 0
>> Created-By = 1.6.0_20 (Sun Microsystems Inc.)
>> Export-Package = foo
>> Generated-By-Ops4j-Pax-From =
>> BuildByTinyBundlestinybundles3268593457443402016UID
>> Import-Package = foo;resolution:=optional
>> Manifest-Version = 1.0
>> Originally-Created-By = pax-swissbox-tinybundles-1.3.0
>> SwissboxTinybundlesVersion = pax-swissbox-tinybundles-1.3.0
>> Tool = Bnd-0.0.313
>>
>> looking good so far, no reconnecting to the shell (ssh -p 8022
>> admin@localhost) to have the new bundle in the classpath
>>
>> reto@trisa-laptop:~$ ssh -p 8022 admin@localhost
>> admin@localhost's password:
>> Welcome to the Apache Clerezza Console
>> Console is based on Scala version 2.8.1.final (OpenJDK 64-Bit Server VM,
>> Java 1.6.0_20).
>> Type in expressions to have them evaluated.
>> Hint: To execute a Felix-Shell command prepend ":f "
>> Type :help for more information.
>> zz>import foo.Hello
>> import foo.Hello
>> zz>val h = new Hello()
>> error: error while loading Hello, class file 'foo/Hello.class' is broken
>> (0)
>> <console>:13: error: foo.Hello does not have a constructor
>> val h = new Hello()
>> ^
>> zz>
>>
>>
>> Well if you read till here, you might have a suggestion on what to try
>> next...
>>
>> Cheers,
>> Reto
>>
>>
>>
>> _______________________________________________
>> general mailing list
>> [email protected]
>> http://lists.ops4j.org/mailman/listinfo/general
>>
>>
>
>
> --
> *Toni Menzel - http://www.okidokiteam.com*
>
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