On Sunday, March 29, 2020 5:14:48 PM CEST JCR wrote:
> > Am Sa., 28. März 2020 um 20:55 Uhr schrieb JCR <[email protected]>:
> >> Hello
Hi Juerg,
> >> I wrote a very simple POJO, built it as OSGi bundle and deployed it to
> >> Sling11. Here's the source:
> >>
> >> package rome.testly.testly1;
> >> import org.osgi.service.component.annotations.Component;
> >>
> >> @Component(service=SlingFutil.class )
> >> public class SlingFutil {
> >>
> >> public String nonsense() {
> >>
> >> return "This is nonsense";
> >>
> >> }
> >>
> >> }
> >>
> >> The component/service appears on the Felix console:
> >>
> >> symbolic Name testly1
> >> Version 0.0.1.202003271754
> >> Bundle Location
> >>
> >> /home/juerg/eclipse-workspace/testly1/target/classes
> >>
> >> Last Modification Fri Mar 27 18:54:01 CET 2020
> >> Start Level 20
> >> Exported Packages ---
> >> Imported Packages org.osgi.framework,version=1.9.0 from
> >> org.apache.felix.framework (0)
> >> <http://localhost:8080/system/console/bundles/0>
> >> org.osgi.service.component,version=1.4.0 from org.apache.felix.scr (50)
> >> <http://localhost:8080/system/console/bundles/50>
> >> org.slf4j,version=1.7.25 from slf4j.api (20)
> >> <http://localhost:8080/system/console/bundles/20>
> >> Service ID 477 <http://localhost:8080/system/console/services/477>
> >> Types: java.lang.Runnable
> >> Component Name: rome.testly.testly1.SimpleDSComponent
> >> Component ID: 323
> >> Service ID 478 <http://localhost:8080/system/console/services/478>
> >> Types: rome.testly.testly1.SlingFutil
> >> Component Name: rome.testly.testly1.SlingFutil
> >> Component ID: 324
> >>
> >>
> >>
> >> Now I try to call SlingFutil.nonsense() from a JSP:
> >>
> >> ...
> >> <%@ page import="javax.jcr.*,
> >>
> >> org.apache.sling.api.resource.Resource,
> >> rome.testly.testly1.*"
> >>
> >> %>
> >> ...
> >> <%
> >> SlingFutil some = new SlingFutil();
> >> %>
> >> ...
> >>
> >> At this point, the JSP compiler complains that the type (SlingFutil) is
> >> unknown.
> >> I also tried
> >>
> >> sling.getService(rome.testly.testly1.SlingFutil.class);
> >>
> >> instead, but the result is the same.
> >>
> >> This used to work well at BND times of Sling, so I don't know what's
> >> wrong with this R7 code.
> >>
> >> Thanks,
> >> Juerg
> >
> > On 28.03.20 21:15, Jörg Hoh wrote:
> >> Hi Juerg,
> >>
> >> Looks like your bundle does not export that class, so it's not available
> >> outside of that bundle.
> >>
> >> Jörg
>
> Hi Jörg
>
> The class is declared as @Component (see above). Do I need any other
> declaration to make the export happen?
It depends on the plugin (and version) you use. See the configuration in Sling
Parent for bnd Maven Plugin:
-exportcontents: ${removeall;${packages;VERSIONED};${packages;CONDITIONAL}}
https://github.com/apache/sling-parent/blob/master/sling-bundle-parent/
pom.xml#L71
And here is an example for a versioned (and therefore exported) package:
@Version("2.3.4")
package org.apache.sling.api;
https://github.com/apache/sling-org-apache-sling-api/blob/master/src/main/
java/org/apache/sling/api/package-info.java
Regards,
O.
> Thanks,
> Juerg
