Hi Phineas, if I understand well each Worker implementation share the
same ConfigurationFactory, and you'd like a different Configuration for
your workers on calling configurationFactory.getConfiguration(), right ?
You may try one of these alternatives:
1. have a ConfigurationFactory per worker:
public class WorkerA implements Worker {
private Configuration configuration;
public WorkerA() {
ConfigurationFactory cf = new ConfigurationFactory();
cf.setConfigurationFileName("configA.xml");
configuration = cf.getConfiguration();
}
}
and the content of configA.xml is:
<configuration>
<system/>
<xml fileName="implementationClass_A.xml"/>
</configuration>
2. let the worker factory assign the configuration to the worker:
public class WorkerFactory {
public static Worker createWorker(Class type) {
Worker worker = (Worker) Class.newInstance();
CompositeConfiguration config = new CompositeConfiguration();
config.addConfiguration(new SystemConfiguration());
String file = type.getName() + ".xml";
config.addConfiguration(new XMLConfiguration(file))
worker.setConfiguration(config);
return worker;
}
}
Hope that helps.
Emmanuel Bourg
Phineas Fung wrote:
> Hi,
>
> We have a few implementation classes that implements the same worker
> interface, that are returned by a factory at runtime.
>
> Every implementation class needs to read an XML configuration file (to be
> exact, a tree structure). The XML hierarchy and fields in each
> configuration file are the same, but contents are different for each
> implementation class.
>
> Unfortunately, all of these implementation classes will be used at the same
> time, and I cannot figure out how to let each implementation class read its
> own XML file.
>
> If I do sth like this:
>
> <configuration>
> <system/>
> <xml fileName="implementationClass_A.xml"/>
> <xml fileName="implementationClass_B.xml"/>
> <xml fileName="implementationClass_C.xml"/>
> </configuration>
>
> The values in implementationClass_C.xml will be overridden by those in A or
> B. What I want is:
>
> Construct a ConfigurationRepository using the fully-qualified class name,
> i.e. "ImplementationClass_C", then it'll read configuration values from
> implementationClass_C.xml. Another ConfigurationRepository using e.g.
> "ImplementationClass_B", then it'll read configuration values from
> implementationClass_B.xml.
>
> Sample configuration files are:
>
> implementationClass_A.xml
>
> <config>
> <cacheTree name="field1_field2_field3">
> <level sortingOrder="100" field="field1"/>
> <level sortingOrder="200" field="field2"/>
> <level sortingOrder="300" field="field3"/>
> </cacheTree>
>
> <cacheTree name="field1_field3">
> <level sortingOrder="100" field="field1"/>
> <level sortingOrder="200" field="field3"/>
> </cacheTree>
>
> <getterMethod methodName="get_Field1" cacheTree="field1_field3"/>
> <getterMethod methodName="get_Field1_Field2"
> cacheTree="field1_field2_field3"/>
> <getterMethod methodName="get_Field1_Field3" cacheTree="field1_field3"/>
> <getterMethod methodName="get_Field1_Field2_Field3"
> cacheTree="field1_field2_field3"/>
> <getterMethod methodName="get_Field1_Field2_Field3_Field4"
> cacheTree="field1_field2_field3"/>
> </config>
>
> implementationClass_B.xml
>
> <config>
> <cacheTree name="field1_field2">
> <level sortingOrder="100" field="field1"/>
> <level sortingOrder="200" field="field2"/>
> </cacheTree>
>
> <getterMethod methodName="get_Field1" cacheTree="field1_field2"/>
> <getterMethod methodName="get_Field1_Field2" cacheTree="field1_field2"/>
> </config>
>
> Any thoughts will be greatly appreciated.
>
> Thanks alot.
>
>
> Best Regards,
> Phineas
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