Tapestry 驗證使用者名

DocSourceDAO代碼：

1. package com.jbcom.support.cms.dao;
2. import com.jbcom.platform.spring.IBaseDao;
3. public interface DocSourceDAO extends IBaseDao {
4.         public String getHQL_All();
5.         public String getHQL_RowCount();
6.     public boolean isNameExist(String docSourceId, String name);
7.     public boolean isNameExist(String name);
8. }

DocSourceDAOImpl代碼：

1. package com.jbcom.support.cms.dao.impl;
2. import java.util.ArrayList;
3. import java.util.List;
4. import com.jbcom.platform.spring.BaseDaoImpl;
5. import com.jbcom.support.cms.dao.DocSourceDAO;
6. import com.jbcom.support.cms.hbm.DocSourceHBM;
7. public class DocSourceDAOImpl extends BaseDaoImpl implements DocSourceDAO {
8.     public String getHQL_All() {
9.         return "from DocSourceHBM docSourceHBM";
10.     }
11.     public String getHQL_RowCount() {
12.         return "select count(*) from DocSourceHBM docSourceHBM";
13.     }
14.     protected Class getPersistentClass() {
15.         return DocSourceHBM.class;
16.     }
17.     public boolean isNameExist(String docSourceId,String name){
18.         List docSource ;
19.         docSource = new ArrayList();
20.         boolean reasult = false;
21.         if(!docSource.equals("0"))
22.             docSource = findWithHQL("FROM DocSourceHBM docSourceHBM where docSourceHBM.docSourceId<>'"
23.                     + docSourceId
24.                     + "' and docSourceHBM.name='"
25.                     + name + "'");
26.         else
27.             docSource = findWithHQL("FROM DocSourceHBM docSourceHBM where docSourceHBM.name='"+name+"'");
28.         if (docSource.size() != 0)
29.             reasult = true;
30.         return reasult;
31.     }
32.     public boolean isNameExist(String name){
33.         return isNameExist("0", name);
34.     }
35. }

DocSourceEdit代碼：

1. package com.jbcom.support.cms.pages;
2. import org.apache.tapestry.IRequestCycle;
3. import org.apache.tapestry.valid.IValidationDelegate;
4. import org.apache.tapestry.valid.ValidationConstraint;
5. import com.jbcom.support.cms.dao.DocSourceDAO;
6. import com.jbcom.support.cms.hbm.DocSourceHBM;
7. import com.jbcom.support.cms.html.DocmentPage;
8. import com.jbcom.support.tapestry.Visit;
9. public abstract class DocSourceEdit extends DocmentPage {
10.     // 設定DAO類
11.     public abstract DocSourceDAO getDocSourceDAO();
12.     // 具體操作對象
13.     public abstract DocSourceHBM getDocSourceHBM();
14.     public abstract void setDocSourceHBM(DocSourceHBM docSourceHBM);
15.     public void save(IRequestCycle cycle) {
16.         IValidationDelegate validationDelegate = (IValidationDelegate) getBeans()
17.                 .getBean("delegate");
18.         doValit(validationDelegate);        
19.         if (validationDelegate.getHasErrors()){         
20.             return;
21.         }
22.         DocSourceDAO dao = getDocSourceDAO();       
23.         // 寫入建立人
24.         getDocSourceHBM().setUser(((Visit)getVisit()).getLoginUser());
25.         dao.save(getDocSourceHBM());        
26.         // 傳回清單頁
27.         DocSourceList nextPage = (DocSourceList) cycle.getPage("DocSourceList");
28.         cycle.activate(nextPage);
29.     }
30.     private void doValit(IValidationDelegate validationDelegate) {
31.         if (validationDelegate.getHasErrors())
32.             return;
33.         DocSourceDAO docSourceDAO = getDocSourceDAO();
34.         String errorMessage = "";
35.         // 來源名稱為空
36.         if (getDocSourceHBM().getName() == null
37.                 || getDocSourceHBM().getName().trim().equals("")) {
38.             errorMessage = "請填寫名稱，名稱不能為空！";
39.             validationDelegate.record(errorMessage,
40.                     ValidationConstraint.CONSISTENCY);
41.             return;
42.         }
43.         // 來源名稱重複
44.         boolean reasult;
45.         if(getDocSourceHBM().getDocSourceId()==null)
46.             reasult = docSourceDAO.isNameExist(getDocSourceHBM().getName());
47.         else
48.             reasult = docSourceDAO.isNameExist(getDocSourceHBM().getDocSourceId(),getDocSourceHBM().getName());
49.         if(reasult){
50.             errorMessage = "該名稱已經被使用,請使用一個有效的名稱！";
51.             validationDelegate.record(errorMessage,
52.                     ValidationConstraint.CONSISTENCY);
53.             return;
54.         }
55.         // 标題過長
56.         if(getDocSourceHBM().getName().length() >= 50)
57.         {
58.             errorMessage = "名稱過長！";
59.             validationDelegate.record(errorMessage,
60.                     ValidationConstraint.CONSISTENCY);
61.             return;
62.         }
63.         // 描述過長
64.         if(getDocSourceHBM().getDescription()!=null){
65.         if(getDocSourceHBM().getDescription().length() >= 50)       
66.         {
67.             errorMessage = "描述過長！";
68.             validationDelegate.record(errorMessage,
69.                     ValidationConstraint.CONSISTENCY);
70.             return;
71.         }
72.         }
73.         // 來源連結位址為空
74.         if(getDocSourceHBM().getLink()==null ||getDocSourceHBM().getLink()=="" ){
75.             errorMessage = "請輸入來源的連結位址！";
76.             validationDelegate.record(errorMessage,
77.                     ValidationConstraint.CONSISTENCY);
78.             return;
79.         }
80.         // 連結過長
81.         if(getDocSourceHBM().getLink().length() >= 50)
82.         {
83.             errorMessage = "連結過長！";
84.             validationDelegate.record(errorMessage,
85.                     ValidationConstraint.CONSISTENCY);
86.             return;
87.         }
88.     }
89. }