Ok, I kind-of expected problems like this. OSGI classloader issues are
quite complex and very hard to get right. As a first step I assume you
have added some test log print code to verify that your plugin is called
at all?
My more general preference would be to move away from Java-based
extensions. Could you summarize why Java is needed in your case, or
whether the same results could be achieved through some other means, in
particular JavaScript?
Thanks,
Holger
On 23/02/2017 19:47, Oleksandr Mandryk wrote:
Hi Hogler,
thank you for the reply.
My plugin.xml looks like this:
|
<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin>
<extension
point="org.topbraid.core.pluginActivators">
<activator
class="com.my.ExportToHIXFunctionPluginActivator">
</activator>
<function
class="com.my.ExportToHIX"
uri="http://my.com/functions#exportToHIX";>
</function>
</extension>
</plugin>
|
Generated Bundle Activator:
|
public class Activator implements BundleActivator {
private BundleContext context;
@Override
public void start(BundleContext context) throws Exception {
System.out.println("Starting Bundle: ExportToHIX");
this.context = context;
}
@Override
public void stop(BundleContext arg0) throws Exception {
System.out.println("Stopping Bundle: ExportToHIX");
this.context = null;
}
}
|
And Function Registration:
|
import org.apache.jena.sparql.function.FunctionRegistry;
import org.topbraid.core.activator.IPluginActivator;
public class ExportToHIXFunctionPluginActivator implements
IPluginActivator {
private static final String EXPORT_TO_HIX_ID =
"http://my.com/functions#exportToHIX";;
@Override
public void activate() {
FunctionRegistry.get().put(EXPORT_TO_HIX_ID, ExportToHIX.class);
}
}
|
Function class:
|
import org.apache.jena.sparql.expr.NodeValue;
import org.apache.jena.sparql.function.FunctionEnv;
import org.topbraid.spin.arq.AbstractFunction0;
public class ExportToHIX extends AbstractFunction0 {
@Override
protected NodeValue exec(FunctionEnv arg0) {
return NodeValue.makeString("Hello World Custom Java Function");
}
}
|
Manifest file:
|
Manifest-Version:1.0
Bundle-ManifestVersion:2
Bundle-Name:MyBundle
Bundle-SymbolicName:com.my.functions;singleton:=true
Bundle-Version:0.0.1
Bundle-Activator:com.my.functions.Activator
Bundle-RequiredExecutionEnvironment:JavaSE-1.8
Import-Package:org.osgi.framework;version="1.3.0"
Bundle-Vendor:ME
Require-Bundle:org.eclipse.core.runtime,org.topbraid.lib.jena,org.topbraid.core,org.topbraid.spin
|
I've tried to put ExportToHIXFunctionPluginActivator instead of
Activator to the manifest file, but it didn't help.
On Thursday, February 23, 2017 at 10:33:15 AM UTC+1, Holger Knublauch
wrote:
Could you share the plugin.xml file? If the function is not
registered you could also try to register it through a bundle
activator.
Holger
Sent from my iPad
On 22 Feb 2017, at 23:04, Oleksandr Mandryk <[email protected]
<javascript:>> wrote:
Hi,
I've created a test Equinox plugin using this guide:
TBC > Help > Help Contents > TopBraid Composer > Extending
TopBraid Suite
It works fine when I run it using "*Launch an Eclipse
application"* in TBC.
I would like to use my exposed function in EVN so I've created
OSGi bundle from this project
by using maven-jar-plugin plugin:
|
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>3.0.2</version>
<configuration>
<archive>
<manifestFile>META-INF/MANIFEST.MF</manifestFile>
</archive>
</configuration>
</plugin>
|
after restarting Tomcat I can see my bundle with the status
RESOLVED in the EVN's list of OSGi bundles,
but my function doesn't work in EVN and I've noticed the warning
in logs:
[TopBraid Warning] 2017-02-22T10:50:22+0000 -
org.topbraid.eclipsex: WARN [http-nio-8080-exec-4]
(E_Function.java:89) - URI <http://my.com/functions#exportToHIX
<http://my.com/functions#exportToHIX>> has no registered function
factory
Could you tell me please what I'm doing wrong?
Thank you.
Best regards,
Oleksandr Mandryk
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