第五支程式要用OSWorkflow提供的API做查詢，查詢出已完成工作流的工作流編號。
  • 程式
    Query.java
    package tw.idv.idealist;

import java.util.*;
import com.opensymphony.workflow.*;
import com.opensymphony.workflow.query.*;
import com.opensymphony.workflow.spi.WorkflowEntry;

/**
 * @author steven
 */
public class Query extends AbstractWorkflow {
	public List getCompleted() {
		FieldExpression fe = new FieldExpression(FieldExpression.STATE,
			FieldExpression.ENTRY,
			FieldExpression.EQUALS,
			new Integer(WorkflowEntry.COMPLETED));
		List list = null;
		try {
			list = getPersistence().query(new WorkflowExpressionQuery(fe));
		} catch (StoreException e) {
			e.printStackTrace();
		}

		return list;
	}
}
    completed.jsp
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<HTML>
<HEAD>
<%@ page language="java" contentType="text/html; charset=BIG5" pageEncoding="BIG5" %>
<%@ page import="tw.idv.idealist.*" %>
<%@ page import="java.util.*" %>

<META http-equiv="Content-Type" content="text/html; charset=BIG5">
<META http-equiv="Content-Style-Type" content="text/css">
<LINK href="theme/Master.css" rel="stylesheet"	type="text/css">
<TITLE>completed.jsp</TITLE>
</HEAD>
<BODY>

已完成的工作流編號:<br>
<%
Query query = new Query();
List completed = query.getCompleted();
for(int i=0; i<completed.size(); i++) {
	Long wfId = (Long) completed.get(i);
	out.println("workflow id => " + wfId + "<br>");
}
%>

</BODY>
</HTML>
  • 測試