StandardResourceAssignmentServiceFactory

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de.danet.an.workflow.assignment
Class StandardResourceAssignmentServiceFactory

java.lang.Object
  de.danet.an.workflow.spis.ras.ResourceAssignmentServiceFactory
      de.danet.an.workflow.assignment.StandardResourceAssignmentServiceFactory

public class StandardResourceAssignmentServiceFactory
extends de.danet.an.workflow.spis.ras.ResourceAssignmentServiceFactory

Implements a simple resource assignment service factory.

Usage of this class as service factory requires an additional configuration parameter. The service factory implementation needs to connect to the assignment service EJB. In order to do so, it needs a JNDI name to look up the home interface. As JNDI names must be changeable by the application deployer, the name can't be hard coded.

This factory therefore uses the following ordered lookup procedure to determine the JNDI name of the assignment service EJB home interface:

Look for a name in java:comp/env/de.danet.an.workflow.assignment.assignmentService. The configuration for StandardResourceAssignmentServiceFactory using this mechanism thus looks like:
```
 <env-entry>
   <description>Configure the chosen factory</description>
   <env-entry-name>de.danet.an.workflow.assignment.assignmentService</env-entry-name>
   <env-entry-type>java.lang.String</env-entry-type>
   <env-entry-value>JNDI name of assignment service EJB home</env-entry-value>
 </env-entry>
```
Note that this environment entry must be inserted in the ejb-jar.xml or web.xml for every EJB resp. servlet that calls the newInstance>newInstance 55 method of ResourceAssignmentServiceFactory.
Find the application resource file de/danet/an/workflow/ras.properties and look for an entry "assignmentService = JNDI name of assignment service EJB home".
Use the fallback JNDI name de.danet.an.workflow.assignment.AssignmentService.

This implementation uses an instance of ResourceManagementService>ResourceManagementService to access a resource management facility. To obtain the service it calls the newInstance>newInstance 55 method of ResourceManagementServiceFactory>ResourceManagementServiceFactory. Thus if this factory (StandardResourceAssignmentServiceFactory) is configured as resource assignment service factory, all configuration information required by ResourceManagementServiceFactory.newInstance (and by the actually configured resource management service factory implementation) must be available when the newInstance>newInstance 55 method of ResourceAssignmentServiceFactory is called.

Field Summary

private AssignmentService as
          The assignment service passed to service instances.

private static java.lang.String homeName
          The home interface name of the assignment service.

private de.danet.an.workflow.spis.rms.ResourceManagementServiceFactory rmsf
          The configured resource management factory.

Fields inherited from class de.danet.an.workflow.spis.ras.ResourceAssignmentServiceFactory

Constructor Summary

StandardResourceAssignmentServiceFactory()
          Constructor.

Method Summary

boolean equals(java.lang.Object obj)
          Two resource assignment service factories are equal if they are identically configured.

private static java.lang.String findHomeName()
          Tries to find the name of the assignment service home interface as described for the class.

int hashCode()
          Generate a hash code.

de.danet.an.workflow.spis.ras.ResourceAssignmentService newResourceAssignmentService()
          Creates a new instance of a ResourceAssignmentService>ResourceAssignmentService.

Methods inherited from class de.danet.an.workflow.spis.ras.ResourceAssignmentServiceFactory

newInstance

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

rmsf

private de.danet.an.workflow.spis.rms.ResourceManagementServiceFactory rmsf

The configured resource management factory.

as

private AssignmentService as

The assignment service passed to service instances.

homeName

private static java.lang.String homeName

The home interface name of the assignment service.

Constructor Detail