17.2 How HydraExpress Uses Named Objects

First, let's review briefly how named objects are used by HydraExpress. For the complete description, see Section 8.3.11.4, "Named Objects Configuration File: objects.xml."

Transports and message handlers are defined in the configuration file objects.xml. Here is part of the objects.xml file for the DayOfWeek example:

<?xml version="1.0" encoding="ISO-8859-1"?>
<objects>
  ...
  <naming-obj>
    <naming-name>http://localhost:8090/dayofweek/DayOfWeek
    </naming-name>
    <naming-class>DayOfWeekPortService.createDayOfWeekPortTypeImp
    </naming-class>
  </naming-obj>
  ...
</objects>

A naming-obj entry has two required elements: a naming-name element that attaches a label to the object so the servlet can call for it by name, and a naming-class element that identifies the shared library and create() method for the object, which allows the object to be instantiated. The naming-obj entry can also have initiation parameter elements as we will see later.

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