tailieunhanh - Microsoft Office SharePoint Server 2007 administrators companion phần 10

Quy trình làm việc được thực hiện trên một máy chủ SharePoint, mà lần lượt sử dụng Windows Workflow Foundation là nền tảng của việc thực hiện của một quá trình công việc. SharePoint Server 2007 bao gồm hỗ trợ cho quy trình công việc trong danh sách, thư viện, | 1014 Part VI Extending Microsoft Office SharePoint Server 2007 third-party products will start to include this technology. Windows Workflow Foundation is embedded in all the Microsoft Office server products such as SharePoint Portal Server Project Server Navision and CRM. Other Microsoft products will use Windows Workflow Foundation as well. Microsoft BizTalk Server vNext the one after BizTalk Server 2006 will also include Windows Workflow Foundation. A workflow is executed on a SharePoint server which in turn uses Windows Workflow Foundation as the foundation of the execution of a workflow process. SharePoint Server 2007 includes support for workflows in lists libraries and content types and it provides queuing and management of lists and libraries to provide the necessary data to the Workflow Foundation runtime as demanded by the workflow s configuration. Activity Management SharePoint Server 2007 runs the workflow until it reaches a point at which it cannot proceed until a specific event occurs or the workflow ends. This leads to the persistence of such an activity to the database in a single SQL transaction. After that the activity is discarded from memory. For example a workflow process might halt until a document is approved. If a workflow is not currently processing any activities it can get into an idle state which leads to the hydration of a workflow. As a result the workflow is discarded from memory and persisted to a database. If a new event occurs that is targeted toward a hydrated workflow the event handler extracts the workflow ID from the event and passes it into the SharePoint Server 2007 queue manager which ensures that the correct workflow is started. In other words SharePoint dehydrates the workflow as needed. The context of workflow events is persisted to tables in the database. The two SQL Server database tables that are most important when it comes to storing information concerning workflows are Content and .