ea2ddl-gen/dbflute/templates/om/csharp/allcommon/cbean/PagingInvoker.vmnet

   1 \r
   2 using System;\r
   3 using System.Collections.Generic;\r
   4 \r
   5 namespace ${glPackageBaseCommonCBean} {\r
   6 \r
   7     public class ${glPagingInvokerName}<ENTITY> {\r
   8 \r
   9         // ===============================================================================\r
  10         //                                                                       Attribute\r
  11         //                                                                       =========\r
  12         protected String _tableDbName;\r
  13         protected bool _countLater;\r
  14 \r
  15         // ===============================================================================\r
  16         //                                                                     Constructor\r
  17         //                                                                     ===========\r
  18         public ${glPagingInvokerName}(String tableDbName) {\r
  19             this._tableDbName = tableDbName;\r
  20         }\r
  21 \r
  22         // ===============================================================================\r
  23         //                                                                          Invoke\r
  24         //                                                                          ======\r
  25         public ${glPagingResultBeanName}<ENTITY> InvokePaging(${glPagingHandlerName}<ENTITY> handler) {\r
  26             AssertObjectNotNull("handler", handler);\r
  27             ${glPagingBeanInterfaceName} pagingBean = handler.PagingBean;\r
  28             AssertObjectNotNull("handler.getPagingBean()", pagingBean);\r
  29             if (!pagingBean.IsFetchScopeEffective) {\r
  30                 String msg = "The paging bean is not effective about fetch-scope!";\r
  31                 msg = msg + " When you select page, you should set up fetch-scope of paging bean(Should invoke fetchFirst() and fetchPage()!).";\r
  32                 msg = msg + " The paging bean is: " + pagingBean;\r
  33                 throw new SystemException(msg);\r
  34             }\r
  35             int allRecordCount;\r
  36             IList<ENTITY> selectedList;\r
  37             if (_countLater) {\r
  38                 selectedList = handler.Paging();\r
  39                 allRecordCount = handler.Count();\r
  40             } else {\r
  41                 allRecordCount = handler.Count();\r
  42                 selectedList = handler.Paging();\r
  43             }\r
  44             ${glPagingResultBeanName}<ENTITY> rb = new ${glResultBeanBuilderName}<ENTITY>(_tableDbName).BuildPagingResultBean(pagingBean, allRecordCount, selectedList);\r
  45             if (IsNecessaryToReadPageAgain(rb)) {\r
  46                 pagingBean.FetchPage(rb.AllPageCount);\r
  47                 int reAllRecordCount = handler.Count();\r
  48                 IList<ENTITY> reSelectedList = handler.Paging();\r
  49                 return new ${glResultBeanBuilderName}<ENTITY>(_tableDbName).BuildPagingResultBean(pagingBean, reAllRecordCount, reSelectedList);\r
  50             } else {\r
  51                 return rb;\r
  52             }\r
  53         }\r
  54 \r
  55         protected bool IsNecessaryToReadPageAgain(${glPagingResultBeanName}<ENTITY> rb) {\r
  56             return rb.AllRecordCount > 0 && rb.SelectedList.Count == 0;\r
  57         }\r
  58 \r
  59         // ===============================================================================\r
  60         //                                                                          Option\r
  61         //                                                                          ======\r
  62         public ${glPagingInvokerName}<ENTITY> CountLater() {\r
  63             _countLater = true; return this;\r
  64         }\r
  65 \r
  66         // ===============================================================================\r
  67         //                                                                          Helper\r
  68         //                                                                          ======\r
  69         protected void AssertObjectNotNull(String variableName, Object value) {\r
  70             if (variableName == null) {\r
  71                 String msg = "The value should not be null: variableName=" + variableName + " value=" + value;\r
  72                 throw new SystemException(msg);\r
  73             }\r
  74             if (value == null) {\r
  75                 String msg = "The value should not be null: variableName=" + variableName;\r
  76                 throw new SystemException(msg);\r
  77             }\r
  78         }\r
  79     }\r
  80 }\r