[导入][AppFuse] AppFuse使用手记－－DAO（七） [原]

[导入][AppFuse] AppFuse使用手记－－DAO（七） [原]

    AppFuse生成的Action的提供了几个基本的CRUD方法。先看一下这几个方法的实现。
        
    Actioni通过Spring注入GenericManager，而GenericManager的实现GenericManagerImpl则调用GenericDao完成DAO操作。Appfuse默认为Hibernate进行DAO操作，GenericManagerImpl的实现类为GenericDaoHibernate，而GenericDaoHibernate里面还是调用的Spring的HibernateTemplate实现DAO操作。

    UML图如下（点击显示大图）：
   

    通常AppFuse提供的几个操作是远远不够的，如果我们需要完成自定义的功能则需要自己实现相应的DAO操作。可以参考Appfuse的实现（参考 Using Hibernate）。增加一个DAO类继承GenericDao，增加一个DAO实现类继承GenericDaoHibernate实现DAO类。

    UML图如下（点击显示大图）：
   

    在applicationContext.xml里声明DAO。然后在Action通过注入DAO，完成相应的Action操作。

    相关试例代码的主要部分如下：
    CompanyDao ：

 1 package  com.reda.app.dao;
 2
 3 import  com.reda.app.model.Company;
 4 import  org.appfuse.dao.GenericDao;
 5
 6 import  java.util.List;
 7
 8 public   interface  CompanyDao  extends  GenericDao < Company, Long >   {
 9    public List find(Company company);
10}
11

    CompanyDaoHibernate：

 1 package  com.reda.app.dao.hibernate;
 2
 3 import  com.reda.app.model.Company;
 4 import  com.reda.app.dao.CompanyDao;
 5 import  org.appfuse.dao.hibernate.GenericDaoHibernate;
 6
 7 import  java.util.List;
 8
 9 public   class  CompanyDaoHibernate  extends  GenericDaoHibernate < Company, Long >   implements  CompanyDao  {
10
11    public CompanyDaoHibernate() {
12        super(Company.class);
13    }
14
15    public List find(Company company) {
16        return super.getHibernateTemplate().find("from Company where companyType=?", company.getCompanyType());
17    }
18
19}

    applicationContext.xml：

1      <!--  Add new DAOs here  -->
2      < bean  id ="companyDao"  class ="com.reda.app.dao.hibernate.CompanyDaoHibernate" >
3          < property  name ="sessionFactory"  ref ="sessionFactory" />
4      </ bean >

    struts.xml：

 1          <!-- CompanyAction-START -->
 2          < action  name ="companies"  class ="com.reda.app.webapp.action.CompanyAction"  method ="list" >
 3              < result > /WEB-INF/pages/companyList.jsp </ result >
 4          </ action >
 5
 6          < action  name ="editCompany"  class ="com.reda.app.webapp.action.CompanyAction"  method ="edit" >
 7              < result > /WEB-INF/pages/companyForm.jsp </ result >
 8              < result  name ="error" > /WEB-INF/pages/companyList.jsp </ result >
 9          </ action >
10
11          < action  name ="saveCompany"  class ="com.reda.app.webapp.action.CompanyAction"  method ="save" >
12              < result  name ="input" > /WEB-INF/pages/companyForm.jsp </ result >
13              < result  name ="cancel"  type ="redirect" > companies.html </ result >
14              < result  name ="delete"  type ="redirect" > companies.html </ result >
15              < result  name ="success"  type ="redirect" > companies.html </ result >
16          </ action >
17
18
19          < action  name ="searchCompany"  class ="com.reda.app.webapp.action.CompanyAction"  method ="search" >
20              < result  name ="input" > /WEB-INF/pages/companyList.jsp </ result >
21              < result > /WEB-INF/pages/companyList.jsp </ result >
22          </ action >         
23
24          <!-- CompanyAction-END -->

    CompanyAction：

  1 package  com.reda.app.webapp.action;
  2
  3 import  com.opensymphony.xwork2.Preparable;
  4 import  com.reda.app.model.Company;
  5 import  com.reda.app.model.CompanyType;
  6 import  com.reda.app.dao.hibernate.CompanyDaoHibernate;
  7 import  org.appfuse.service.GenericManager;
  8 import  org.appfuse.webapp.action.BaseAction;
  9
 10 import  java.util.List;
 11
 12 public   class  CompanyAction  extends  BaseAction  implements  Preparable  {
 13    private GenericManager<Company, Long> companyManager;
 14    private GenericManager<CompanyType, Long> companyTypeManager;
 15    private List companies;
 16    private Company company;
 17    private Long companyId;
 18
 19    private CompanyDaoHibernate companyDao;
 20    
 21    public void setCompanyManager(GenericManager<Company, Long> companyManager) {
 22        this.companyManager = companyManager;
 23    }
 24
 25    public void setCompanyTypeManager(GenericManager<CompanyType, Long> companyTypeManager) {
 26        this.companyTypeManager = companyTypeManager;
 27    }
 28
 29    public List getCompanies() {
 30        return companies;
 31    }
 32
 33    public void setCompanyDao(CompanyDaoHibernate companyDao) {
 34        this.companyDao = companyDao;
 35    }
 36
 37    public String search() {
 38        companies = companyDao.find(company);
 39        return SUCCESS;
 40    }
 41
 42    public List getCompanyTypeList() {
 43        return companyTypeManager.getAll();
 44    }
 45
 46    /** *//**
 47     * Grab the entity from the database before populating with request parameters
 48     */
 49    public void prepare() {
 50        if (getRequest().getMethod().equalsIgnoreCase("post")) {
 51            // prevent failures on new
 52            String companyId = getRequest().getParameter("company.companyId");
 53//            if (companyId != null && !companyId.equals("")) {
 54//                company = companyManager.get(new Long(companyId));
 55//            }
 56        }
 57    }
 58
 59    public String list() {
 60        companies = companyManager.getAll();
 61        return SUCCESS;
 62    }
 63
 64    public void setCompanyId(Long companyId) {
 65        this.companyId = companyId;
 66    }
 67
 68    public Company getCompany() {
 69        return company;
 70    }
 71
 72    public void setCompany(Company company) {
 73        this.company = company;
 74    }
 75
 76    public String delete() {
 77        companyManager.remove(company.getCompanyId());
 78        saveMessage(getText("company.deleted"));
 79
 80        return SUCCESS;
 81    }
 82
 83    public String edit() {
 84        if (companyId != null) {
 85            company = companyManager.get(companyId);
 86        } else {
 87            company = new Company();
 88        }
 89
 90        return SUCCESS;
 91    }
 92
 93    public String save() throws Exception {
 94        if (cancel != null) {
 95            return "cancel";
 96        }
 97
 98        if (delete != null) {
 99            return delete();
100        }
101
102        boolean isNew = (company.getCompanyId() == null);
103
104        companyManager.save(company);
105
106        String key = (isNew) ? "company.added" : "company.updated";
107        saveMessage(getText(key));
108
109        if (!isNew) {
110            return INPUT;
111        } else {
112            return SUCCESS;
113        }
114    }
115}

    companyList.jsp

 1 <% @ include file="/common/taglibs.jsp"  %>
 2
 3 < head >
 4      < title >< fmt:message  key ="companyList.title" /></ title >
 5      < meta  name ="heading"  content ="<fmt:message key='companyList.heading'/>" />
 6      < meta  name ="menu"  content ="CompanyMenu" />
 7 </ head >
 8
 9 < s:form  id ="companyForm"  action ="searchCompany"  method ="post"  validate ="true" >
10
11 < li >
12      < s:checkbox  key ="company.status"  cssClass ="checkbox"  theme ="simple" />
13      < s:label  for ="companyForm_company_status"  value ="%{getText('company.status')}"  cssClass ="choice desc"  theme ="simple" />
14      < s:label  for ="companyForm_company_companyType"  value ="%{getText('company.companyType.typeName')}"  cssClass ="desc" />
15      < s:select  name ="company.companyType.typeId"  list ="companyTypeList"  listKey ="typeId"  listValue ="typeName"   ></ s:select >
16      < s:textfield  key ="company.companyName"  required ="true"  maxlength ="200"  cssClass ="text medium" />
17 </ li >
18      < li  class ="buttonBar bottom" >
19          < s:submit  cssClass ="button"  method ="search"  key ="button.search"  theme ="simple" />
20      </ li >
21 </ s:form >
22
23
24 < c:set  var ="buttons" >
25      < input  type ="button"  style ="margin-right: 5px"  class ="button"
26            onclick ="location.href='<c:url value=" /editCompany.html" /> '"
27            value=" < fmt:message  key ="button.add" /> "/>
28
29      < input  type ="button"  class ="button"  onclick ="location.href='<c:url value=" /mainMenu.html" /> '"
30            value=" < fmt:message  key ="button.done" /> "/>
31 </ c:set >
32
33 < c:out  value ="${buttons}"  escapeXml ="false" />
34
35
36 < display:table  name ="companies"  class ="table"  requestURI =""  id ="companyList"  export ="true"  pagesize ="25" >
37      < display:column  property ="companyId"  sortable ="true"  href ="editCompany.html"  media ="html"
38                     paramId ="companyId"  paramProperty ="companyId"  titleKey ="company.companyId" />
39      < display:column  property ="companyId"  media ="csv excel xml pdf"  titleKey ="company.companyId" />
40      < display:column  sortProperty ="status"  sortable ="true"  titleKey ="company.status" >
41          < input  type ="checkbox"  disabled ="disabled"  <c:if test ="${companyList.status}" > checked="checked" </ c:if > />
42      </ display:column >
43
44      < display:column  property ="companyType.typeName"  sortable ="true"  titleKey ="companyType.typeName" />
45      < display:column  property ="companyName"  sortable ="true"  titleKey ="company.companyName" />
46
47      < display:setProperty  name ="paging.banner.item_name" >< fmt:message  key ="companyList.company" /></ display:setProperty >
48      < display:setProperty  name ="paging.banner.items_name" >< fmt:message
49              key ="companyList.companies" /></ display:setProperty >
50
51      < display:setProperty  name ="export.excel.filename" >< fmt:message  key ="companyList.title" /> .xls </ display:setProperty >
52      < display:setProperty  name ="export.csv.filename" >< fmt:message  key ="companyList.title" /> .csv </ display:setProperty >
53      < display:setProperty  name ="export.pdf.filename" >< fmt:message  key ="companyList.title" /> .pdf </ display:setProperty >
54 </ display:table >
55
56 < c:out  value ="${buttons}"  escapeXml ="false" />
57
58 < script  type ="text/javascript" >
59    highlightTableRows("companyList");
60 </ script >
61

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