Spring Composite Applications

[Javawerks]

Is it possible to build a Spring DM bundle that composes one or more Spring components packaged as standard jars built via Maven?

For instance, build a (non-OSGI bundle) service.date.jar, with the following context:

<context:component-scan base-package="service.date"/>

Then build an app.osgi.date.jar bundle that contains a dependency on service.date.jar. It has the following context:

<import resource="classpath*:service.date.context.xml"/>

<osgi:service id="dateService"
ref="dateService"
interface="service.date.DateService"/>

The packaged app.osgi.date.jar, an OSGi bundle, contains the service.date.jar, a standard jar. The bundle plugin configuration is:

<Export-Package>
service.date.*;version=${version}
</Export-Package>
<Include-Resource>
src/main/resources
</Include-Resource>
<Embed-Dependency>
*;scope=compile|runtime
</Embed-Dependency>

Running an AbstractConfigurableBundleCreatorTests integration test, though, produces the following exception:

Caused by: org.osgi.framework.BundleException: The bundle could not be resolved. Reason: Missing Constraint: Import-Package: service.date; version="0.0.0"

Overriding getTestBundlesName(), per the Spring DM documentations, does not resolve the above exception.

Also the above import of the service.date.context.xml is not processed, according to the log.

This leads me to believe that one 'can not' build a Spring DM bundle that imports and autowires together a set of Spring components packaged as standard jars. Is this true?

[Costin Leau]

What exactly do you mean by standard jars? Having a bundle that contains the jars internally? If so, then make sure you add the jars inside the bundle classpath since otherwise they will not be picked up.

[Javawerks]

A standard jar from a maven repository. My manifest:

Manifest-Version: 1.0
Export-Package: com.ihg.crm.offline.transformation.booking;uses:="com.
 ihg.crm.offline.model.booking,org.xml.sax,javax.xml.transform,javax.x
 ml.transform.stream,javax.xml.validation,org.apache.commons.io,javax.
 xml.bind",com.ihg.crm.offline.service.booking;uses:="com.ihg.persiste
 nce.hibernate,org.aspectj.lang,com.ihg.crm.offline.model.booking,java
 x.xml.namespace,org.springframework.transaction.aspectj,org.aspectj.l
 ang.reflect,org.springframework.transaction.annotation,org.aspectj.ru
 ntime.reflect,javax.xml.bind.annotation,javax.xml.bind",com.ihg.crm.o
 ffline.message.listener.booking;uses:="com.ihg.crm.offline.transforma
 tion.booking,org.springframework.jms.support.converter,com.ihg.crm.of
 fline.service.booking,javax.jms",com.ihg.crm.offline.model.booking.ut
 il;uses:="javax.xml.bind",com.ihg.crm.offline.model.booking;uses:="or
 g.jvnet.jaxb2_commons.lang.builder,org.apache.commons.lang.builder,ja
 vax.xml.bind.annotation,com.ihg.crm.offline.model.booking.util,javax.
 xml.bind.annotation.adapters,javax.xml.bind,org.jvnet.jaxb2_commons.l
 ang,javax.xml.namespace"
Private-Package: org.springframework.asm,org.springframework.asm.commo
 ns,org.springframework.asm.signature,org.springframework.beans,org.sp
 ringframework.beans.annotation,org.springframework.beans.factory,org.
 springframework.beans.factory.access,org.springframework.beans.factor
 y.access.el,org.springframework.beans.factory.annotation,org.springfr
 amework.beans.factory.config,org.springframework.beans.factory.generi
 c,org.springframework.beans.factory.parsing,org.springframework.beans
 .factory.serviceloader,org.springframework.beans.factory.support,org.
 springframework.beans.factory.wiring,org.springframework.beans.factor
 y.xml,org.springframework.beans.propertyeditors,org.springframework.b
 eans.support,org.springframework.context,org.springframework.context.
 access,org.springframework.context.annotation,org.springframework.con
 text.config,org.springframework.context.event,org.springframework.con
 text.i18n,org.springframework.context.support,org.springframework.con
 text.weaving,org.springframework.core,org.springframework.core.annota
 tion,org.springframework.core.enums,org.springframework.core.io,org.s
 pringframework.core.io.support,org.springframework.core.style,org.spr
 ingframework.core.task,org.springframework.core.task.support,org.spri
 ngframework.core.type,org.springframework.core.type.classreading,org.
 springframework.core.type.filter,org.springframework.ejb.access,org.s
 pringframework.ejb.config,org.springframework.ejb.interceptor,org.spr
 ingframework.ejb.support,org.springframework.instrument.classloading,
 org.springframework.instrument.classloading.glassfish,org.springframe
 work.instrument.classloading.oc4j,org.springframework.instrument.clas
 sloading.weblogic,org.springframework.jmx,org.springframework.jmx.acc
 ess,org.springframework.jmx.export,org.springframework.jmx.export.ann
 otation,org.springframework.jmx.export.assembler,org.springframework.
 jmx.export.metadata,org.springframework.jmx.export.naming,org.springf
 ramework.jmx.export.notification,org.springframework.jmx.support,org.
 springframework.jndi,org.springframework.jndi.support,org.springframe
 work.metadata,org.springframework.metadata.commons,org.springframewor
 k.osgi.extender,org.springframework.osgi.extender.event,org.springfra
 mework.osgi.extender.internal.activator,org.springframework.osgi.exte
 nder.internal.dependencies.shutdown,org.springframework.osgi.extender
 .internal.dependencies.startup,org.springframework.osgi.extender.inte
 rnal.support,org.springframework.osgi.extender.internal.util.concurre
 nt,org.springframework.osgi.extender.support,org.springframework.osgi
 .extender.support.internal,org.springframework.osgi.extender.support.
 scanning,org.springframework.remoting,org.springframework.remoting.rm
 i,org.springframework.remoting.soap,org.springframework.remoting.supp
 ort,org.springframework.scheduling,org.springframework.scheduling.bac
 kportconcurrent,org.springframework.scheduling.concurrent,org.springf
 ramework.scheduling.support,org.springframework.scheduling.timer,org.
 springframework.scripting,org.springframework.scripting.bsh,org.sprin
 gframework.scripting.config,org.springframework.scripting.groovy,org.
 springframework.scripting.jruby,org.springframework.scripting.support
 ,org.springframework.stereotype,org.springframework.ui,org.springfram
 ework.ui.context,org.springframework.ui.context.support,org.springfra
 mework.util,org.springframework.util.comparator,org.springframework.u
 til.xml,org.springframework.validation
Bundle-ClassPath: .,model.booking-0.1-SNAPSHOT.jar,transformation.book
 ing-0.1-SNAPSHOT.jar,spring-osgi-extender-1.1.1.jar,service.booking-0
 .1-SNAPSHOT.jar,spring-beans-2.5.5.jar,spring-context-2.5.5.jar,messa
 ge.listener.booking-0.1-SNAPSHOT.jar,spring-core-2.5.5.jar
Built-By: funkmi
Tool: Bnd-0.0.238
Bundle-Name: Booking OSGi Application
Created-By: Apache Maven Bundle Plugin
Build-Jdk: 1.6.0_07
Bundle-Version: 0.1.0.SNAPSHOT
Eclipse-BuddyPolicy: registered
Bnd-LastModified: 1222180256217
Bundle-ManifestVersion: 2
Import-Package: bsh,com.ihg.crm.offline.message.listener.booking,com.i
 hg.crm.offline.model.booking,com.ihg.crm.offline.model.booking.util,c
 om.ihg.crm.offline.service.booking,com.ihg.crm.offline.transformation
 .booking,com.ihg.persistence.hibernate,com.sun.enterprise.loader,com.
 sun.net.httpserver,edu.emory.mathcs.backport.java.util.concurrent,gro
 ovy.lang,javax.annotation,javax.ejb,javax.el,javax.interceptor,javax.
 jms,javax.management,javax.management.modelmbean,javax.management.ope
 nmbean,javax.management.remote,javax.naming,javax.persistence.spi,jav
 ax.rmi,javax.rmi.CORBA,javax.xml.bind,javax.xml.bind.annotation,javax
 .xml.bind.annotation.adapters,javax.xml.namespace,javax.xml.parsers,j
 avax.xml.transform,javax.xml.transform.stream,javax.xml.validation,ja
 vax.xml.ws,net.sf.cglib.asm,net.sf.cglib.core,net.sf.cglib.proxy,orac
 le.classloader.util,org.aopalliance.aop;version="1.0",org.aopalliance
 .intercept;version="1.0",org.apache.commons.attributes,org.apache.com
 mons.collections,org.apache.commons.collections.map,org.apache.common
 s.io;version="1.4",org.apache.commons.lang.builder;version="2.4",org.
 apache.commons.logging,org.apache.log4j,org.apache.log4j.xml,org.aspe
 ctj.bridge,org.aspectj.lang,org.aspectj.lang.reflect,org.aspectj.runt
 ime.reflect,org.aspectj.weaver,org.aspectj.weaver.bcel,org.aspectj.we
 aver.loadtime,org.aspectj.weaver.patterns,org.codehaus.groovy.control
 ,org.jruby,org.jruby.ast,org.jruby.exceptions,org.jruby.javasupport,o
 rg.jruby.runtime,org.jruby.runtime.builtin,org.jvnet.jaxb2_commons.la
 ng,org.jvnet.jaxb2_commons.lang.builder,org.omg.CORBA,org.omg.CORBA.p
 ortable,org.omg.CORBA_2_3.portable,org.osgi.framework,org.osgi.servic
 e.packageadmin,org.springframework.aop;version="2.5",org.springframew
 ork.aop.framework;version="2.5",org.springframework.aop.scope;version
 ="2.5",org.springframework.aop.support;version="2.5",org.springframew
 ork.aop.target;version="2.5",org.springframework.aop.target.dynamic;v
 ersion="2.5",org.springframework.instrument,org.springframework.jms.s
 upport.converter;version="2.5",org.springframework.osgi;version="1.1"
 ,org.springframework.osgi.context;version="1.1",org.springframework.o
 sgi.context.event;version="1.1",org.springframework.osgi.context.supp
 ort;version="1.1",org.springframework.osgi.io.internal.resolver;versi
 on="1.1",org.springframework.osgi.service.importer;version="1.1",org.
 springframework.osgi.service.importer.event;version="1.1",org.springf
 ramework.osgi.service.importer.support;version="1.1",org.springframew
 ork.osgi.util;version="1.1",org.springframework.transaction.annotatio
 n;version="2.5",org.springframework.transaction.aspectj;version="2.5"
 ,org.w3c.dom,org.xml.sax
Embed-Dependency: *;scope=compile|runtime
Bundle-SymbolicName: com.ihg.crm.offline.app.osgi.booking

All the required jars are on the classpath. The issue is that the Spring DM context ignores the import of 3 other Spring contexts. So I'm unable to launch a Spring application composed of a set of contexts.

Using only one context works, less the integration test. But that is not ideal in a component-based world.

Has no one else attempted to build a Spring DM bundle that compose other Spring contexts? It works like a charm in standalone and web applications.

I would respectfully suggest that the next release of Spring DM include meaningful example applications.