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C# IConnectionInfo.GetColumnName方法代码示例

本文整理汇总了C#中IConnectionInfo.GetColumnName方法的典型用法代码示例。如果您正苦于以下问题:C# IConnectionInfo.GetColumnName方法的具体用法?C# IConnectionInfo.GetColumnName怎么用?C# IConnectionInfo.GetColumnName使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在IConnectionInfo的用法示例。


在下文中一共展示了IConnectionInfo.GetColumnName方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。

示例1: PrepareTableEntity

      private static TableData PrepareTableEntity(IConnectionInfo cxInfo, ModuleBuilder moduleBuilder, IDbConnection dbConnection, string nameSpace, string databaseName, string tableName, ExplorerItem tableExplorerItem)
      {
         // get primary key columns
         var primaryKeyColumns = dbConnection.GetPrimaryKeyColumns(tableName);

         var typeName = $"{nameSpace}.{cxInfo.GetTypeName(tableName)}";

         // ToDo make sure tablename can be used
         var typeBuilder = moduleBuilder.DefineType(typeName, TypeAttributes.Public, typeof(Entity));

         // add the table attribute to the class
         typeBuilder.AddTableAttribute(tableName);

         var query = SqlHelper.LoadSql("QueryColumns.sql");
         var propertyAndFieldNames = new HashSet<string>();

         var columns = dbConnection.Query(query, new { DatabaseName = databaseName, TableName = tableName });
         foreach (var column in columns)
         {
            var columnName = cxInfo.GetColumnName((string)column.ColumnName);
            var isPrimaryKeyColumn = primaryKeyColumns.Contains((string)column.ColumnName); // always use the unmodified column name
            var columnDefault = (string)column.ColumnDefault;

            // always make primary key columns nullable (otherwise auto increment can't be used with an insert)
            var fieldType = (Type)SqlHelper.MapDbTypeToType(column.DataType, column.UdtName, "YES".Equals(column.Nullable, StringComparison.InvariantCultureIgnoreCase), cxInfo.UseAdvancedTypes());

            string text;

            if (fieldType != null)
            {
               // ToDo make sure name can be used
               var fieldBuilder = typeBuilder.DefineField(columnName, fieldType, FieldAttributes.Public);
               fieldBuilder.AddColumnAttribute((string)column.ColumnName); // always use the unmodified column name

               if (isPrimaryKeyColumn)
               {
                  // check if the column is an identity column
                  if (!string.IsNullOrEmpty(columnDefault) && columnDefault.ToLower().StartsWith("nextval"))
                  {
                     fieldBuilder.AddIdentityAttribute();
                  }

                  fieldBuilder.AddPrimaryKeyAttribute();
               }

               text = $"{columnName} ({fieldType.GetTypeName()})";
               propertyAndFieldNames.Add(columnName);
            }
            else
            {
               // field type is not mapped
               text = $"{columnName} (unsupported - {column.DataType})";
            }

            var explorerItem = new ExplorerItem(text, ExplorerItemKind.Property, ExplorerIcon.Column)
            {
               SqlTypeDeclaration = column.DataType,
               DragText = columnName
            };

            tableExplorerItem.Children.Add(explorerItem);
         }

         return new TableData(tableName, tableExplorerItem, typeBuilder, propertyAndFieldNames);
      }
开发者ID:henrik-m,项目名称:linqpad-postgresql-driver,代码行数:65,代码来源:PostgreSqlTablesProvider.cs


注:本文中的IConnectionInfo.GetColumnName方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。