Hi Martin,
Guice code came from maven central, but should be the same as your link, yes.
org.apache.axis2.ServiceObjectSupplier is in axis2-1.5.1.jar, so from
http://ws.apache.org/axis2/download/1_5/download.cgi
My implementation of ServiceObjectSupplier is
GuiceServiceObjectSupplier (attached). We also need a web.xml and some
glue classes for the guice/servlet integration (attached). This
approach is very similar to that at
http://ssagara.blogspot.com/2009/05/guice-axis2-integration.html .
Finally, we add <parameter name="ServiceClass"
locked="false">com.example.Api</parameter>
<parameter name="ServiceObjectSupplier"
locked="false">com.example.guiceintegration.GuiceServiceObjectSupplier</parameter>
to the services.xml (as per
http://ws.apache.org/axis2/1_5_1/axis2config.html#Service_Configuration)
Our service class com.example.Api can now use google injections.
So, my question is: In the case when I use jsr181 annotations, and
deploy my annotated pojo, as at
http://ws.apache.org/axis2/1_5_1/pojoguide.html#jsr181pojows I don't
have a services.xml. How then can I tell axis2 to use my
GuiceServiceObjectSupplier?
Hope you can now track what I'm trying to do - let me know if I've
missed any details.
Cheers,
Bruce.
Quoting Martin Gainty <[email protected]>:
Hi Bruce
experiencing difficulty tracking your guice injection effort
did you get your Guice code here?
http://code.google.com/p/google-guice/downloads/list
can you provide the link for the jars or source which contain
ServiceObjectSupplier?
thanks!
Martin Gainty
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Date: Sun, 25 Apr 2010 23:46:08 +0100
From: [email protected]
To: [email protected]
Subject: [Axis2] JSR181 and ServiceObjectSupplier
Hi,
I'm using axis2-1.5.1. What is the JSR181 equivalent of the parameter
"ServiceObjectSupplier" in services.xml? Is it sensible to write a
custom POJODeployer?
I'm trying to integrate Google Guice and Axis2 using JSR181 annotated
POJOs to define my web service.
a) I can make Guice inject dependencies into my services by adding the
parameter
<parameter name="ServiceObjectSupplier" locked="false">
com.example.guiceintegration.GuiceServiceObjectSupplier
</parameter>
to my services.xml, where
com.example.guiceintegration.GuiceServiceObjectSupplier is an
implementation of org.apache.axis2.ServiceObjectSupplier which supplies
instances of the service object obtained from the Guice injector.
b) I can deploy JSR181 annotated POJOs by putting the .class in the
directory specified in <deployer extension=".class" directory="pojo"
class="org.apache.axis2.deployment.POJODeployer"/> in my axis2.xml
What is the best way to combine a) and b)?
Either
1) Is there an annotation which does the job of the
ServiceObjectSupplier parameter? I would like something like
@WebService(name="foo",
serviceobjectsupplier=GuiceServiceObjectSupplier.class).
or
2) Can I achieve the effect I want by writing a custom POJODeployer?
I'm not very familiar with the axis2 codebase - is there a hook for
creating service objects?
might be good approaches.
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package com.example.guiceintegration;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import org.apache.axis2.AxisFault;
import org.apache.axis2.ServiceObjectSupplier;
import org.apache.axis2.description.AxisService;
import org.apache.axis2.description.Parameter;
import org.apache.axis2.transport.http.HTTPConstants;
import org.apache.log4j.Logger;
import com.google.inject.Injector;
/**
* Supplies service objects, created by Guice, to Axis.
*
* @author bruce
*
*/
public class GuiceServiceObjectSupplier implements ServiceObjectSupplier {
private static final String INJECTOR_NAME = Injector.class.getName();
private static final String SERVICE_CLASS_PARAMETER_NAME = "ServiceClass";
private static final Logger log = Logger.getLogger(GuiceServiceObjectSupplier.class);
public Object getServiceObject(AxisService axisService) throws AxisFault {
try {
Class<?> serviceClass = serviceClass(axisService);
Injector injector = injector(axisService);
if (serviceClass != null && injector != null) {
return injector.getInstance(serviceClass);
}
} catch (ServiceObjectException e) {
log.error(e.getMessage());
} catch (ClassNotFoundException e) {
log.error(e.getMessage());
}
return null;
}
private Injector injector(AxisService axisService) throws ServiceObjectException {
Parameter servletConfigParam = axisService.getAxisConfiguration().getParameter(HTTPConstants.HTTP_SERVLETCONFIG);
if (servletConfigParam == null) {
throw new ServiceObjectException("Axis2 Can't find ServletConfigParameter");
}
Object obj = servletConfigParam.getValue();
ServletContext servletContext;
if (obj instanceof ServletConfig) {
ServletConfig servletConfig = (ServletConfig) obj;
servletContext = servletConfig.getServletContext();
} else {
throw new ServiceObjectException("Axis2 Can't find ServletConfig");
}
return (Injector) servletContext.getAttribute(INJECTOR_NAME);
}
private Class<?> serviceClass(AxisService axisService) throws ClassNotFoundException, ServiceObjectException {
Parameter serviceParam = axisService.getParameter(SERVICE_CLASS_PARAMETER_NAME);
if (serviceParam == null) {
throw new ServiceObjectException("Couldn't find parameter '" + SERVICE_CLASS_PARAMETER_NAME + "' in axis service config.");
}
String serviceName = (String) serviceParam.getValue();
if (serviceName == null) {
throw new ServiceObjectException("Parameter '" + SERVICE_CLASS_PARAMETER_NAME + "' in axis service config has no value.");
}
return Class.forName(serviceName.trim());
}
private static class ServiceObjectException extends Exception {
public ServiceObjectException(String message) {
super(message);
}
}
}
-----------------------------
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd";
version="2.4">
<filter>
<filter-name>guiceFilter</filter-name>
<filter-class>com.google.inject.servlet.GuiceFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>guiceFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<listener>
<listener-class>com.example.guiceintegration.GuiceServletConfig</listener-class>
</listener>
</web-app>
--------------------------------
-----------------------------------------
package com.example.config;
import com.google.inject.AbstractModule;
import com.google.inject.servlet.ServletModule;
import com.example.GuiceAxisServlet;
public class WebappModule extends AbstractModule {
@Override
protected void configure() {
install(new ServletModule() {
@Override
protected void configureServlets() {
serve("/services/*").with(GuiceAxisServlet.class);
}
});
}
}
-----------------------------------------
package com.example.guiceintegration;
import org.apache.axis2.transport.http.AxisServlet;
import com.google.inject.Singleton;
@Singleton
public class GuiceAxisServlet extends AxisServlet {
private static final long serialVersionUID = 1L;
}
------------------------------------------
package com.example.guiceintegration;
import com.google.inject.Module;
import com.google.inject.servlet.GuiceServletContextListener;
import com.example.config.WebappModule;
/**
* Integration point for guice/servlet integration. A listener in the webapp
* context listens for context created and starts up Guice by creating the
* injector. The injector is also stored in the servlet context so that service
* objects created by Axis can also be guiced: this happens via
* {...@link GuiceServiceObjectSupplier}.
*
* @author bruce
*
*/
public class GuiceServletConfig extends GuiceServletContextListener {
@Override
protected Module getModule() {
return new WebappModule();
}
}
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