liferay-6 - 在liferay searchcontainer中对多个列标题进行排序

Question

我在 liferay 6.0.6 中对 liferay searchcontainer 的单列标题进行了排序。现在我想以 asc 或 desc 顺序对多个字段应用排序，即 FirstName、LastName、Date。谁能帮帮我..

提前致谢....

Answer 1

视图.jsp

<%
PortalPreferences portalPrefs = PortletPreferencesFactoryUtil.getPortalPreferences(request);
String orderByCol = ParamUtil.getString(request, "orderByCol");
String orderByType = ParamUtil.getString(request, "orderByType");
System.out.println("Col  "+ orderByCol);


if (Validator.isNotNull(orderByCol) && Validator.isNotNull(orderByType)) {
portalPrefs.setValue("NAME_SPACE", "order-by-col", orderByCol);
portalPrefs.setValue("NAME_SPACE", "order-by-type", orderByType);

} else {

orderByCol = portalPrefs.getValue("NAME_SPACE", "order-by-col", "Date");
orderByType = portalPrefs.getValue("NAME_SPACE", "order-by-type", "asc");

}
 %>


 <liferay-ui:search-container  delta='20' emptyResultsMessage="No Form Submitted" orderByCol="<%= orderByCol %>" orderByType="<%= orderByType %>">

 <liferay-ui:search-container-results>

<%
            List<User> userList = UserLocalServiceUtil.getUsers(-1,-1);
            OrderByComparator orderByComparator =       
           CustomComparatorUtil.getUserOrderByComparator(orderByCol, orderByType);        

           Collections.sort(userList,orderByComparator);

          results = ListUtil.subList(userList, searchContainer.getStart(),   
                     searchContainer.getEnd());

               if (userList.size()< total)
                {total = userList.size();
                }

               pageContext.setAttribute("results", results);
               pageContext.setAttribute("total", total);

 %>


 </liferay-ui:search-container-results>

    <liferay-ui:search-container-row
     className="com.liferay.portal.model.User"

     modelVar="user">

     <liferay-ui:search-container-column-text
      name="Screen Name"
      property="screenName"
      orderable="<%= true %>"
      orderableProperty="screenName"
     />

      <liferay-ui:search-container-column-text
      name="Email"
      property="emailAddress"
      orderable="<%= true %>"
     orderableProperty="emailAddress"
     />

      <liferay-ui:search-container-column-text
      name="Date"
      property="createDate"
      orderable="<%= true %>"

     />


   </liferay-ui:search-container-row>

    <liferay-ui:search-iterator />

</liferay-ui:search-container>

CustomComparatorUtil

public static OrderByComparator getUserOrderByComparator(
               String orderByCol, String orderByType) {


               boolean orderByAsc = false;

               if (orderByType.equals("asc")) {
               orderByAsc = true;
               }

               OrderByComparator orderByComparator = null;

                System.out.println("Custom "+ orderByCol);
               if (orderByCol.equalsIgnoreCase("screenName")) {
                   System.out.println("1");
                orderByComparator = new FirstNameComparator(orderByAsc);
               }
               else if (orderByCol.equalsIgnoreCase("emailAddress")) {
                   System.out.println("2");
                orderByComparator = new EmailComparator(orderByAsc);
               }
               else if (orderByCol.equalsIgnoreCase("Date")) {
                 System.out.println("3");
                orderByComparator = new DateComparator(orderByAsc);
               }/*
               else if (orderByCol.equalsIgnoreCase("Job Title")) {

                orderByComparator = new JobTitleComparator(orderByAsc);
               }*/

               return orderByComparator;
               }

名字比较器

公共静态字符串 ORDER_BY_ASC = "状态 ASC";

 public static String ORDER_BY_DESC = "status DESC";


  public FirstNameComparator()
  {
   this(false);
  }

  public FirstNameComparator(boolean asc) {
   _asc = asc;
  }

 public int compare(Object obj1, Object obj2) {

   User instance1 = (User) obj1;
   User instance2 = (User) obj2;

   int value = instance1.getFirstName().toLowerCase().compareTo(instance2.getFirstName().toLowerCase());

   if(_asc)
   {
    return value;
   } else
   {
    return -value;
   }

 }


 public String getOrderBy() {

  if (_asc) {
   return ORDER_BY_ASC;
  }
  else {
   return ORDER_BY_DESC;
  }
  }

 private boolean _asc;

}

同样，您可以为电子邮件地址和日期上课..