Why would you want to create a service
this way? Why wouldn’t you just create a HelloImpl class which
implements your service interface and use BuilderFactory to instantiate it?
From: 张博
[mailto:[EMAIL PROTECTED]
Sent: Wednesday, June 15, 2005
12:57 AM
To:
[email protected]
Subject: A problem about
ServiceImplementationFactory
Hello everyone:
I'm new to hivemind. I'm from China.
I want to use ServiceImplementationFactory to produce Service, here is the
code:
------------------------------
------------------------------------------------------------------------------------------------------
Interface: Hello.java
package cn.topsmart.test;
public interface Hello {
public void sayHello();
}
---------------------------------------------------------------------------------------------------------------------------------------
HelloFactory.java
package cn.topsmart.test;
import org.apache.hivemind.ServiceImplementationFactory;
import org.apache.hivemind.ServiceImplementationFactoryParameters;
public class HelloFactory implements ServiceImplementationFactory {
public Object createCoreServiceImplementation(
ServiceImplementationFactoryParameters factoryParameters) {
return new Hello(){
public void sayHello()
{
System.out.println("hello..............");
}
};
}
}
-------------------------------------------------------------------------------------------------------------------------------------------------
hivemodule.xml
<?xml version="1.0"?>
<module id="topsmart" version="0.0.1">
<service-point id="HelloFactory"
interface="org.apache.hivemind.ServiceImplementationFactory"/>
<service-point id="Hello"
interface="cn.topsmart.test.Hello"/>
<implementation service-id="HelloFactory">
<invoke-factory>
<construct
class="cn.topsmart.test.HelloFactory"/>
</invoke-factory>
</implementation>
<implementation service-id="Hello">
<invoke-factory
service-id="HelloFactory"/>
</implementation>
</module>
-------------------------------------------------------------------------------------------------------------------------------------
Test.java
Hello hello = (Hello)registry.getService(Hello.class);
hello.sayHello();
-----------------------------------------------------------------------------------------------------------------------------------
But when I run the test code, the mistake appears:
[EMAIL PROTECTED]:16:58 ERROR
(topsmart.Hello) - Error at
file:/E:/projects/topsmart/build/classes/META-INF/hivemodule.xml, line 14,
column 46: Parameters to service implementation factory HelloFactory contains
no contributions but expects exactly one contribution.
I did not know why this is? Was any place makes a mistake?
Thanks!
|
