YAWL - User Manual - Polytechnic of Namibia - Mirrors

20 CHAPTER 2. INSTALLATIONFigure 2.11: The pgAdmin tool, Object Browser panel on the left• YAWL CoreWebServices 2.3.zip: The core set of YAWL services, comprising the core Engine, and theResource, Worklet, Web Service Invoker, Mail, DocumentStore and Monitor Services.• YAWL OptionalWebServices 2.3.zip: Extra services that you may find useful for particular purposes.• YAWL LibraryJars 2.3.zip: Two library jars that contain the YAWL class files only (i.e. without anythird party libraries) and so can be used to embed references to the YAWL classes when developingapplications. The file yawl-lib-2.3.jar contains every Engine and Service class file in the YAWL environment,while the file YResourceServiceClient.jar contains the minimum set of YAWL classes requiredwhen developing applications using the Resource Service’s APIs, or when developing custom formsfor your processes (see Chapter 4, Section 4.14).• YAWL Standalone 2.3.jar A basic, standalone desktop version of the Engine.• YAWL SourceAndTestCode 2.3.zip The source code for the environment.Download the CoreWebServices file (and, if any of the optional services are required, the OptionalWebServicesfile). Unzip the contents of the file to /webapps directory. When Tomcat is (re)started, itwill automatically unpack each war file into its own directory under webapps (cf. Figure 2.12). There are sixcore web services:1. yawl.war: the core workflow engine.2. resourceService.war: handles the allocation of tasks to resources; contains the default worklist handler;generates dynamic forms; manages codelets; manages organisational data.3. workletService.war: handles dynamic flexibility and exception handling.4. yawlWSInvoker.war: allocates tasks to synchronous web services.5. mailService.war: sends emails base on task data to specified recipients.