EngineConfigurationFactory is an interface used to construct concrete EngineConfiguration instances. Each EngineConfigurationFactory must also (directly) implement the following static method: //Creates and returns a new EngineConfigurationFactory. //If a factory cannot be created, return 'null'. // //The factory may return non-NULL only if: // - it knows what to do with the param (check type & process value) // - it can find it's configuration information // //@see org.apache.axis.configuration.EngineConfigurationFactoryFinder public static EngineConfigurationFactory newFactory(Object param); This is checked at runtime and a warning generated for factories found that do NOT implement this.