用c#开发微信 (11) 微统计

微信平台自带的统计功能太简单，有时我们需要统计有哪些微信个人用户阅读、分享了微信公众号的手机网页，以及微信个人用户访问手机网页的来源：朋友圈分享访问、好友分享消息访问等。本系统实现了手机网页阅读、分享与来源统计及手机网页在朋友圈的传播路径分析。

本系统使用最传统的三层架构。本文是微统计的第一篇，主要介绍如下内容：

1. 数据库设计

2. 数据访问框架层及数据实体层

3. 数据访问层

4. 视图实体定义层

 

下面是详细实现步骤：

1. 数据库设计

阅读记录 PageNav

分享记录 PageShare

 

CREATE TABLE [dbo].[PageShare](
    [Id] [uniqueidentifier] NOT NULL,
    [Url] [nvarchar](4000) NOT NULL,
    [From] [smallint] NOT NULL,
    [ShareOpenId] [nvarchar](4000) NOT NULL,
    [ParentShareOpenId] [nvarchar](4000) NOT NULL,
    [ShareTime] [datetime] NOT NULL,
 CONSTRAINT [PK_PageShare] PRIMARY KEY CLUSTERED
(
    [Id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]

GO


CREATE TABLE [dbo].[PageNav](
    [Id] [uniqueidentifier] NOT NULL,
    [Url] [nvarchar](4000) NOT NULL,
    [From] [smallint] NOT NULL,
    [NavOpenId] [nvarchar](4000) NOT NULL,
    [ShareOpenId] [nvarchar](4000) NOT NULL,
    [VisitTime] [datetime] NOT NULL,
 CONSTRAINT [PK_PageNav] PRIMARY KEY CLUSTERED
(
    [Id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]

GO

 

2. 数据访问框架层及数据实体定义层 （ORM ）

使用Entity Framework来实现DAL层与数据库交互的数据传输，EF已包含与数据库一致的数据实体。

添加一个ADO.NET Entity Data Model的item，连接到刚才建立的数据库,我这里用的是EF 6

添加完成后如下图：

 

 

3. 数据访问层（DAL）

通过调用ORM，实现数据持久化。

1)  添加一个增删改查的一个通用基类GenericRepository：

using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Data.Entity.Validation;
using System.Linq;
using System.Linq.Expressions;
using System.Web;

public class GenericRepository<TContext, TEntity> : IDisposable
        where TContext : DbContext, new()
    where TEntity : class
{
    protected TContext _context;
    protected readonly IDbSet<TEntity> _set;

    public GenericRepository()
    {
        _context = new TContext();
        _set = _context.Set<TEntity>();
    }

    protected TContext Context
    {
        get
        {
            return _context;
        }
    }

    protected IDbSet<TEntity> DbSet
    {
        get
        {
            return _set == null ? _context.Set<TEntity>() : _set;
        }
    }

    public IQueryable<TEntity> GetAll()
    {
        return DbSet.AsQueryable();
    }

    /// <summary>
    /// 分页查询
    /// </summary>
    /// <typeparam name="TEntity"></typeparam>
    /// <param name="funWheres">条件表达式u => u.OpenId == userInfo.OpenId</param>
    /// <param name="sortExpress">排序属性名称</param>
    /// <param name="isSortAsc">是否升序</param>
    /// <param name="pageSize">每页大小</param>
    /// <param name="pageIndex">当前页码,以0开始</param>
    /// <param name="totalCount">返回查询总数量</param>
    /// <returns></returns>
    public IQueryable<TEntity> GetPaged(ref int totalCount, List<Expression<Func<TEntity, bool>>> funWheres, string sortPropertyName = "", bool isSortAsc = true, int pageIndex = 0, int pageSize = 20)
    {
        IQueryable<TEntity> query = DbSet;
        foreach (var funWhere in funWheres)
        {
            query = query.Where(funWhere);
        }
        query = query.Distinct();
        totalCount = query.Count();

        //order
        if (!string.IsNullOrEmpty(sortPropertyName))
        {
            query = query.OrderBy(sortPropertyName, isSortAsc);
            query = query.Skip(pageSize * pageIndex);
        }

        query = query.Take(pageSize);
        return query;
    }

    /// <summary>
    ///
    /// </summary>
    /// <param name="predicate">条件表达式 u => u.OpenId == userInfo.OpenId</param>
    /// <returns></returns>
    public IQueryable<TEntity> GetByPredicate(Expression<Func<TEntity, bool>> predicate)
    {
        return DbSet.Where(predicate).AsQueryable<TEntity>();
    }

    /// <summary>
    ///
    /// </summary>
    /// <param name="predicate">条件表达式 u => u.OpenId == userInfo.OpenId</param>
    /// <returns></returns>
    public bool Contains(Expression<Func<TEntity, bool>> predicate)
    {
        return DbSet.Count(predicate) > 0; ;
    }

    /// <summary>
    ///
    /// </summary>
    /// <param name="keys">可用于联合主健 1, "Michael"</param>
    /// <returns></returns>
    public TEntity GetSingleByKeys(params object[] keys)
    {
        return DbSet.Find(keys);
    }

    /// <summary>
    ///
    /// </summary>
    /// <param name="predicate">条件表达式 u => u.OpenId == userInfo.OpenId</param>
    /// <returns></returns>
    public TEntity GetSingleByPredicate(Expression<Func<TEntity, bool>> predicate)
    {
        return DbSet.FirstOrDefault(predicate);
    }

    public bool Insert(TEntity t)
    {
        var entity = DbSet.Add(t);
        return Save() > 0;
    }

    public TEntity InsertAndReturn(TEntity t)
    {
        var ent = DbSet.Add(t);
        Save();
        return ent;
    }

    public bool Delete(TEntity t)
    {
        if (Context.Entry(t).State == EntityState.Detached)
        {
            DbSet.Attach(t);
        }
        DbSet.Remove(t);
        return Save() > 0;
    }

    public bool Delete(Expression<Func<TEntity, bool>> predicate)
    {
        var toDelete = GetByPredicate(predicate);
        foreach (var obj in toDelete)
        {
            DbSet.Remove(obj);
        }
        return Save() > 0;
    }

    public bool Update(TEntity t)
    {
        var entry = Context.Entry(t);
        DbSet.Attach(t);
        entry.State = EntityState.Modified;
        return Save() > 0;
    }

    public int Save()
    {
        return Context.SaveChanges();
    }

    public int Count
    {
        get { return DbSet.Count(); }
    }

    public IQueryable<TEntity> GetWithRawSql(string query, params object[] parameters)
    {
        return Context.Database.SqlQuery<TEntity>(query, parameters).AsQueryable();
    }

    public void Dispose()
    {
        if (Context != null)
            Context.Dispose();
        GC.SuppressFinalize(this);
    }
}

public static class MyExtend
{
    public static IQueryable<T> OrderBy<T>(this IQueryable<T> queryable, string propertyName, bool isSortAsc)
    {
        Expression param = Expression.Parameter(typeof(T));
        var properties = propertyName.Split('.');
        var body = param;
        //支持"User.Age"这种参数  p=>p.User.Age
        foreach (var p in properties)
        {
            body = Expression.Property(body, p);
        }
        dynamic keySelector = Expression.Lambda(body, param as ParameterExpression);
        return isSortAsc ? Queryable.OrderBy(queryable, keySelector) : Queryable.OrderByDescending(queryable, keySelector);
    }
}

 

2） 添加一个Text Template的item, 并写入下面的内容：

<#@ template language="C#" debug="false" hostspecific="true"#>
<#@ include file="EF6.Utility.CS.ttinclude"#><#@
 output extension=".cs"#><#



const string inputFile = @"..ORMStatistics.edmx";
var usingEntity = "using Statistics.ORM;";

var className = "Dal";


var textTransform = DynamicTextTransformation.Create(this);
var code = new CodeGenerationTools(this);
var ef = new MetadataTools(this);
var typeMapper = new TypeMapper(code, ef, textTransform.Errors);
var    fileManager = EntityFrameworkTemplateFileManager.Create(this);
var itemCollection = new EdmMetadataLoader(textTransform.Host, textTransform.Errors).CreateEdmItemCollection(inputFile);
var codeStringGenerator = new CodeStringGenerator(code, typeMapper, ef);
var container = itemCollection.OfType<EntityContainer>().FirstOrDefault();
if (container == null)
{
    return string.Empty;
}
if (!typeMapper.VerifyCaseInsensitiveTypeUniqueness(typeMapper.GetAllGlobalItems(itemCollection), inputFile))
{
    return string.Empty;
}

WriteHeader(codeStringGenerator, fileManager);

foreach (var entity in typeMapper.GetItemsToGenerate<EntityType>(itemCollection))
{
    fileManager.StartNewFile(entity.Name + className + ".cs");
    BeginNamespace(code);
#>

<#=usingEntity#>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

<#=codeStringGenerator.EntityClassOpening(entity)#><#=className#>: GenericRepository<<#=code.Escape(container)#>,<#=entity.Name #>>
{

}
<#
    EndNamespace(code);
}

foreach (var complex in typeMapper.GetItemsToGenerate<ComplexType>(itemCollection))
{
    fileManager.StartNewFile(complex.Name + ".cs");
    BeginNamespace(code);
#>
<#=codeStringGenerator.UsingDirectives(inHeader: false, includeCollections: false)#>
<#=Accessibility.ForType(complex)#> partial class <#=code.Escape(complex)#>
{
<#
    var complexProperties = typeMapper.GetComplexProperties(complex);
    var propertiesWithDefaultValues = typeMapper.GetPropertiesWithDefaultValues(complex);

    if (propertiesWithDefaultValues.Any() || complexProperties.Any())
    {
#>
    public <#=code.Escape(complex)#>()
    {
<#
        foreach (var edmProperty in propertiesWithDefaultValues)
        {
#>
        this.<#=code.Escape(edmProperty)#> = <#=typeMapper.CreateLiteral(edmProperty.DefaultValue)#>;
<#
        }

        foreach (var complexProperty in complexProperties)
        {
#>
        this.<#=code.Escape(complexProperty)#> = new <#=typeMapper.GetTypeName(complexProperty.TypeUsage)#>();
<#
        }
#>
    }

<#
    }

    var simpleProperties = typeMapper.GetSimpleProperties(complex);
    if (simpleProperties.Any())
    {
        foreach(var edmProperty in simpleProperties)
        {
#>
    <#=codeStringGenerator.Property(edmProperty)#>
<#
        }
    }

    if (complexProperties.Any())
    {
#>

<#
        foreach(var edmProperty in complexProperties)
        {
#>
    <#=codeStringGenerator.Property(edmProperty)#>
<#
        }
    }
#>
}
<#
    EndNamespace(code);
}

foreach (var enumType in typeMapper.GetEnumItemsToGenerate(itemCollection))
{
    fileManager.StartNewFile(enumType.Name + ".cs");
    BeginNamespace(code);
#>
<#=codeStringGenerator.UsingDirectives(inHeader: false, includeCollections: false)#>
<#
    if (typeMapper.EnumIsFlags(enumType))
    {
#>
[Flags]
<#
    }
#>
<#=codeStringGenerator.EnumOpening(enumType)#>
{
<#
    var foundOne = false;

    foreach (MetadataItem member in typeMapper.GetEnumMembers(enumType))
    {
        foundOne = true;
#>
    <#=code.Escape(typeMapper.GetEnumMemberName(member))#> = <#=typeMapper.GetEnumMemberValue(member)#>,
<#
    }

    if (foundOne)
    {
        this.GenerationEnvironment.Remove(this.GenerationEnvironment.Length - 3, 1);
    }
#>
}
<#
    EndNamespace(code);
}

fileManager.Process();

#>
<#+

public void WriteHeader(CodeStringGenerator codeStringGenerator, EntityFrameworkTemplateFileManager fileManager)
{
    fileManager.StartHeader();
#>
//------------------------------------------------------------------------------
// <auto-generated>
// <#=CodeGenerationTools.GetResourceString("Template_GeneratedCodeCommentLine1")#>
//
// <#=CodeGenerationTools.GetResourceString("Template_GeneratedCodeCommentLine2")#>
// <#=CodeGenerationTools.GetResourceString("Template_GeneratedCodeCommentLine3")#>
// </auto-generated>
//------------------------------------------------------------------------------
<#=codeStringGenerator.UsingDirectives(inHeader: true)#>
<#+
    fileManager.EndBlock();
}

public void BeginNamespace(CodeGenerationTools code)
{
    var codeNamespace = code.VsNamespaceSuggestion();
    if (!String.IsNullOrEmpty(codeNamespace))
    {
#>
namespace <#=code.EscapeNamespace(codeNamespace)#>
{
<#+
        PushIndent("    ");
    }
}

public void EndNamespace(CodeGenerationTools code)
{
    if (!String.IsNullOrEmpty(code.VsNamespaceSuggestion()))
    {
        PopIndent();
#>
}
<#+
    }
}

public const string TemplateId = "CSharp_DbContext_Types_EF6";

public class CodeStringGenerator
{
    private readonly CodeGenerationTools _code;
    private readonly TypeMapper _typeMapper;
    private readonly MetadataTools _ef;

    public CodeStringGenerator(CodeGenerationTools code, TypeMapper typeMapper, MetadataTools ef)
    {
        ArgumentNotNull(code, "code");
        ArgumentNotNull(typeMapper, "typeMapper");
        ArgumentNotNull(ef, "ef");

        _code = code;
        _typeMapper = typeMapper;
        _ef = ef;
    }

    public string Property(EdmProperty edmProperty)
    {
        return string.Format(
            CultureInfo.InvariantCulture,
            "{0} {1} {2} {{ {3}get; {4}set; }}",
            Accessibility.ForProperty(edmProperty),
            _typeMapper.GetTypeName(edmProperty.TypeUsage),
            _code.Escape(edmProperty),
            _code.SpaceAfter(Accessibility.ForGetter(edmProperty)),
            _code.SpaceAfter(Accessibility.ForSetter(edmProperty)));
    }

    public string NavigationProperty(NavigationProperty navProp)
    {
        var endType = _typeMapper.GetTypeName(navProp.ToEndMember.GetEntityType());
        return string.Format(
            CultureInfo.InvariantCulture,
            "{0} {1} {2} {{ {3}get; {4}set; }}",
            AccessibilityAndVirtual(Accessibility.ForNavigationProperty(navProp)),
            navProp.ToEndMember.RelationshipMultiplicity == RelationshipMultiplicity.Many ? ("ICollection<" + endType + ">") : endType,
            _code.Escape(navProp),
            _code.SpaceAfter(Accessibility.ForGetter(navProp)),
            _code.SpaceAfter(Accessibility.ForSetter(navProp)));
    }

    public string AccessibilityAndVirtual(string accessibility)
    {
        return accessibility + (accessibility != "private" ? " virtual" : "");
    }

    public string EntityClassOpening(EntityType entity)
    {
        return string.Format(
            CultureInfo.InvariantCulture,
            "{0} {1}partial class {2}{3}",
            Accessibility.ForType(entity),
            _code.SpaceAfter(_code.AbstractOption(entity)),
            _code.Escape(entity),
            _code.StringBefore(" : ", _typeMapper.GetTypeName(entity.BaseType)));
    }

    public string EnumOpening(SimpleType enumType)
    {
        return string.Format(
            CultureInfo.InvariantCulture,
            "{0} enum {1} : {2}",
            Accessibility.ForType(enumType),
            _code.Escape(enumType),
            _code.Escape(_typeMapper.UnderlyingClrType(enumType)));
        }

    public void WriteFunctionParameters(EdmFunction edmFunction, Action<string, string, string, string> writeParameter)
    {
        var parameters = FunctionImportParameter.Create(edmFunction.Parameters, _code, _ef);
        foreach (var parameter in parameters.Where(p => p.NeedsLocalVariable))
        {
            var isNotNull = parameter.IsNullableOfT ? parameter.FunctionParameterName + ".HasValue" : parameter.FunctionParameterName + " != null";
            var notNullInit = "new ObjectParameter("" + parameter.EsqlParameterName + "", " + parameter.FunctionParameterName + ")";
            var nullInit = "new ObjectParameter("" + parameter.EsqlParameterName + "", typeof(" + TypeMapper.FixNamespaces(parameter.RawClrTypeName) + "))";
            writeParameter(parameter.LocalVariableName, isNotNull, notNullInit, nullInit);
        }
    }

    public string ComposableFunctionMethod(EdmFunction edmFunction, string modelNamespace)
    {
        var parameters = _typeMapper.GetParameters(edmFunction);

        return string.Format(
            CultureInfo.InvariantCulture,
            "{0} IQueryable<{1}> {2}({3})",
            AccessibilityAndVirtual(Accessibility.ForMethod(edmFunction)),
            _typeMapper.GetTypeName(_typeMapper.GetReturnType(edmFunction), modelNamespace),
            _code.Escape(edmFunction),
            string.Join(", ", parameters.Select(p => TypeMapper.FixNamespaces(p.FunctionParameterType) + " " + p.FunctionParameterName).ToArray()));
    }

    public string ComposableCreateQuery(EdmFunction edmFunction, string modelNamespace)
    {
        var parameters = _typeMapper.GetParameters(edmFunction);

        return string.Format(
            CultureInfo.InvariantCulture,
            "return ((IObjectContextAdapter)this).ObjectContext.CreateQuery<{0}>("[{1}].[{2}]({3})"{4});",
            _typeMapper.GetTypeName(_typeMapper.GetReturnType(edmFunction), modelNamespace),
            edmFunction.NamespaceName,
            edmFunction.Name,
            string.Join(", ", parameters.Select(p => "@" + p.EsqlParameterName).ToArray()),
            _code.StringBefore(", ", string.Join(", ", parameters.Select(p => p.ExecuteParameterName).ToArray())));
    }

    public string FunctionMethod(EdmFunction edmFunction, string modelNamespace, bool includeMergeOption)
    {
        var parameters = _typeMapper.GetParameters(edmFunction);
        var returnType = _typeMapper.GetReturnType(edmFunction);

        var paramList = String.Join(", ", parameters.Select(p => TypeMapper.FixNamespaces(p.FunctionParameterType) + " " + p.FunctionParameterName).ToArray());
        if (includeMergeOption)
        {
            paramList = _code.StringAfter(paramList, ", ") + "MergeOption mergeOption";
        }

        return string.Format(
            CultureInfo.InvariantCulture,
            "{0} {1} {2}({3})",
            AccessibilityAndVirtual(Accessibility.ForMethod(edmFunction)),
            returnType == null ? "int" : "ObjectResult<" + _typeMapper.GetTypeName(returnType, modelNamespace) + ">",
            _code.Escape(edmFunction),
            paramList);
    }

    public string ExecuteFunction(EdmFunction edmFunction, string modelNamespace, bool includeMergeOption)
    {
        var parameters = _typeMapper.GetParameters(edmFunction);
        var returnType = _typeMapper.GetReturnType(edmFunction);

        var callParams = _code.StringBefore(", ", String.Join(", ", parameters.Select(p => p.ExecuteParameterName).ToArray()));
        if (includeMergeOption)
        {
            callParams = ", mergeOption" + callParams;
        }

        return string.Format(
            CultureInfo.InvariantCulture,
            "return ((IObjectContextAdapter)this).ObjectContext.ExecuteFunction{0}("{1}"{2});",
            returnType == null ? "" : "<" + _typeMapper.GetTypeName(returnType, modelNamespace) + ">",
            edmFunction.Name,
            callParams);
    }

    public string DbSet(EntitySet entitySet)
    {
        return string.Format(
            CultureInfo.InvariantCulture,
            "{0} virtual DbSet<{1}> {2} {{ get; set; }}",
            Accessibility.ForReadOnlyProperty(entitySet),
            _typeMapper.GetTypeName(entitySet.ElementType),
            _code.Escape(entitySet));
    }

    public string UsingDirectives(bool inHeader, bool includeCollections = true)
    {
        return inHeader == string.IsNullOrEmpty(_code.VsNamespaceSuggestion())
            ? string.Format(
                CultureInfo.InvariantCulture,
                "{0}using System;{3}using System.Runtime.Serialization;{1}" +
                "{2}",
                inHeader ? Environment.NewLine : "",
                includeCollections ? (Environment.NewLine + "using System.Collections.Generic;") : "",
                inHeader ? "" : Environment.NewLine, Environment.NewLine)
            : "";
    }

    public string WriteEntityTypeSerializationInfo(EntityType type)
    {
        StringBuilder output = new StringBuilder();
        output.AppendLine("[DataContract(IsReference = true)]");

        List<String> typeList = new List<String>();
        var complexProperties = _typeMapper.GetComplexProperties(type);
        foreach(var complexProperty in complexProperties)
        {
            typeList.Add(_code.Escape(complexProperty));
        }

        var navigationProperties = _typeMapper.GetNavigationProperties(type);
        foreach (var navigationProperty in navigationProperties)
        {
            typeList.Add(_code.Escape(_typeMapper.GetTypeName(navigationProperty.ToEndMember.GetEntityType())));
        }

        foreach(String sItem in typeList.Distinct())
        {
            output.AppendFormat("[KnownType(typeof({0}))]{1}", sItem, Environment.NewLine);
        }

        return output.ToString();
    }
}

public class TypeMapper
{
    private const string ExternalTypeNameAttributeName = @"http://schemas.microsoft.com/ado/2006/04/codegeneration:ExternalTypeName";

    private readonly System.Collections.IList _errors;
    private readonly CodeGenerationTools _code;
    private readonly MetadataTools _ef;

    public TypeMapper(CodeGenerationTools code, MetadataTools ef, System.Collections.IList errors)
    {
        ArgumentNotNull(code, "code");
        ArgumentNotNull(ef, "ef");
        ArgumentNotNull(errors, "errors");

        _code = code;
        _ef = ef;
        _errors = errors;
    }

    public static string FixNamespaces(string typeName)
    {
        return typeName.Replace("System.Data.Spatial.", "System.Data.Entity.Spatial.");
    }

    public string GetTypeName(TypeUsage typeUsage)
    {
        return typeUsage == null ? null : GetTypeName(typeUsage.EdmType, _ef.IsNullable(typeUsage), modelNamespace: null);
    }

    public string GetTypeName(EdmType edmType)
    {
        return GetTypeName(edmType, isNullable: null, modelNamespace: null);
    }

    public string GetTypeName(TypeUsage typeUsage, string modelNamespace)
    {
        return typeUsage == null ? null : GetTypeName(typeUsage.EdmType, _ef.IsNullable(typeUsage), modelNamespace);
    }

    public string GetTypeName(EdmType edmType, string modelNamespace)
    {
        return GetTypeName(edmType, isNullable: null, modelNamespace: modelNamespace);
    }

    public string GetTypeName(EdmType edmType, bool? isNullable, string modelNamespace)
    {
        if (edmType == null)
        {
            return null;
        }

        var collectionType = edmType as CollectionType;
        if (collectionType != null)
        {
            return String.Format(CultureInfo.InvariantCulture, "ICollection<{0}>", GetTypeName(collectionType.TypeUsage, modelNamespace));
        }

        var typeName = _code.Escape(edmType.MetadataProperties
                                .Where(p => p.Name == ExternalTypeNameAttributeName)
                                .Select(p => (string)p.Value)
                                .FirstOrDefault())
            ?? (modelNamespace != null && edmType.NamespaceName != modelNamespace ?
                _code.CreateFullName(_code.EscapeNamespace(edmType.NamespaceName), _code.Escape(edmType)) :
                _code.Escape(edmType));

        if (edmType is StructuralType)
        {
            return typeName;
        }

        if (edmType is SimpleType)
        {
            var clrType = UnderlyingClrType(edmType);
            if (!IsEnumType(edmType))
            {
                typeName = _code.Escape(clrType);
            }

            typeName = FixNamespaces(typeName);

            return clrType.IsValueType && isNullable == true ?
                String.Format(CultureInfo.InvariantCulture, "Nullable<{0}>", typeName) :
                typeName;
        }

        throw new ArgumentException("edmType");
    }

    public Type UnderlyingClrType(EdmType edmType)
    {
        ArgumentNotNull(edmType, "edmType");

        var primitiveType = edmType as PrimitiveType;
        if (primitiveType != null)
        {
            return primitiveType.ClrEquivalentType;
        }

        if (IsEnumType(edmType))
        {
            return GetEnumUnderlyingType(edmType).ClrEquivalentType;
        }

        return typeof(object);
    }

    public object GetEnumMemberValue(MetadataItem enumMember)
    {
        ArgumentNotNull(enumMember, "enumMember");

        var valueProperty = enumMember.GetType().GetProperty("Value");
        return valueProperty == null ? null : valueProperty.GetValue(enumMember, null);
    }

    public string GetEnumMemberName(MetadataItem enumMember)
    {
        ArgumentNotNull(enumMember, "enumMember");

        var nameProperty = enumMember.GetType().GetProperty("Name");
        return nameProperty == null ? null : (string)nameProperty.GetValue(enumMember, null);
    }

    public System.Collections.IEnumerable GetEnumMembers(EdmType enumType)
    {
        ArgumentNotNull(enumType, "enumType");

        var membersProperty = enumType.GetType().GetProperty("Members");
        return membersProperty != null
            ? (System.Collections.IEnumerable)membersProperty.GetValue(enumType, null)
            : Enumerable.Empty<MetadataItem>();
    }

    public bool EnumIsFlags(EdmType enumType)
    {
        ArgumentNotNull(enumType, "enumType");

        var isFlagsProperty = enumType.GetType().GetProperty("IsFlags");
        return isFlagsProperty != null && (bool)isFlagsProperty.GetValue(enumType, null);
    }

    public bool IsEnumType(GlobalItem edmType)
    {
        ArgumentNotNull(edmType, "edmType");

        return edmType.GetType().Name == "EnumType";
    }

    public PrimitiveType GetEnumUnderlyingType(EdmType enumType)
    {
        ArgumentNotNull(enumType, "enumType");

        return (PrimitiveType)enumType.GetType().GetProperty("UnderlyingType").GetValue(enumType, null);
    }

    public string CreateLiteral(object value)
    {
        if (value == null || value.GetType() != typeof(TimeSpan))
        {
            return _code.CreateLiteral(value);
        }

        return string.Format(CultureInfo.InvariantCulture, "new TimeSpan({0})", ((TimeSpan)value).Ticks);
    }

    public bool VerifyCaseInsensitiveTypeUniqueness(IEnumerable<string> types, string sourceFile)
    {
        ArgumentNotNull(types, "types");
        ArgumentNotNull(sourceFile, "sourceFile");

        var hash = new HashSet<string>(StringComparer.InvariantCultureIgnoreCase);
        if (types.Any(item => !hash.Add(item)))
        {
            _errors.Add(
                new CompilerError(sourceFile, -1, -1, "6023",
                    String.Format(CultureInfo.CurrentCulture, CodeGenerationTools.GetResourceString("Template_CaseInsensitiveTypeConflict"))));
            return false;
        }
        return true;
    }

    public IEnumerable<SimpleType> GetEnumItemsToGenerate(IEnumerable<GlobalItem> itemCollection)
    {
        return GetItemsToGenerate<SimpleType>(itemCollection)
            .Where(e => IsEnumType(e));
    }

    public IEnumerable<T> GetItemsToGenerate<T>(IEnumerable<GlobalItem> itemCollection) where T: EdmType
    {
        return itemCollection
            .OfType<T>()
            .Where(i => !i.MetadataProperties.Any(p => p.Name == ExternalTypeNameAttributeName))
            .OrderBy(i => i.Name);
    }

    public IEnumerable<string> GetAllGlobalItems(IEnumerable<GlobalItem> itemCollection)
    {
        return itemCollection
            .Where(i => i is EntityType || i is ComplexType || i is EntityContainer || IsEnumType(i))
            .Select(g => GetGlobalItemName(g));
    }

    public string GetGlobalItemName(GlobalItem item)
    {
        if (item is EdmType)
        {
            return ((EdmType)item).Name;
        }
        else
        {
            return ((EntityContainer)item).Name;
        }
    }

    public IEnumerable<EdmProperty> GetSimpleProperties(EntityType type)
    {
        return type.Properties.Where(p => p.TypeUsage.EdmType is SimpleType && p.DeclaringType == type);
    }

    public IEnumerable<EdmProperty> GetSimpleProperties(ComplexType type)
    {
        return type.Properties.Where(p => p.TypeUsage.EdmType is SimpleType && p.DeclaringType == type);
    }

    public IEnumerable<EdmProperty> GetComplexProperties(EntityType type)
    {
        return type.Properties.Where(p => p.TypeUsage.EdmType is ComplexType && p.DeclaringType == type);
    }

    public IEnumerable<EdmProperty> GetComplexProperties(ComplexType type)
    {
        return type.Properties.Where(p => p.TypeUsage.EdmType is ComplexType && p.DeclaringType == type);
    }

    public IEnumerable<EdmProperty> GetPropertiesWithDefaultValues(EntityType type)
    {
        return type.Properties.Where(p => p.TypeUsage.EdmType is SimpleType && p.DeclaringType == type && p.DefaultValue != null);
    }

    public IEnumerable<EdmProperty> GetPropertiesWithDefaultValues(ComplexType type)
    {
        return type.Properties.Where(p => p.TypeUsage.EdmType is SimpleType && p.DeclaringType == type && p.DefaultValue != null);
    }

    public IEnumerable<NavigationProperty> GetNavigationProperties(EntityType type)
    {
        return type.NavigationProperties.Where(np => np.DeclaringType == type);
    }

    public IEnumerable<NavigationProperty> GetCollectionNavigationProperties(EntityType type)
    {
        return type.NavigationProperties.Where(np => np.DeclaringType == type && np.ToEndMember.RelationshipMultiplicity == RelationshipMultiplicity.Many);
    }

    public FunctionParameter GetReturnParameter(EdmFunction edmFunction)
    {
        ArgumentNotNull(edmFunction, "edmFunction");

        var returnParamsProperty = edmFunction.GetType().GetProperty("ReturnParameters");
        return returnParamsProperty == null
            ? edmFunction.ReturnParameter
            : ((IEnumerable<FunctionParameter>)returnParamsProperty.GetValue(edmFunction, null)).FirstOrDefault();
    }

    public bool IsComposable(EdmFunction edmFunction)
    {
        ArgumentNotNull(edmFunction, "edmFunction");

        var isComposableProperty = edmFunction.GetType().GetProperty("IsComposableAttribute");
        return isComposableProperty != null && (bool)isComposableProperty.GetValue(edmFunction, null);
    }

    public IEnumerable<FunctionImportParameter> GetParameters(EdmFunction edmFunction)
    {
        return FunctionImportParameter.Create(edmFunction.Parameters, _code, _ef);
    }

    public TypeUsage GetReturnType(EdmFunction edmFunction)
    {
        var returnParam = GetReturnParameter(edmFunction);
        return returnParam == null ? null : _ef.GetElementType(returnParam.TypeUsage);
    }

    public bool GenerateMergeOptionFunction(EdmFunction edmFunction, bool includeMergeOption)
    {
        var returnType = GetReturnType(edmFunction);
        return !includeMergeOption && returnType != null && returnType.EdmType.BuiltInTypeKind == BuiltInTypeKind.EntityType;
    }
}

public static void ArgumentNotNull<T>(T arg, string name) where T : class
{
    if (arg == null)
    {
        throw new ArgumentNullException(name);
    }
}
#>

 

这里要注意的是这二行：

const string inputFile = @"..ORMStatistics.edmx";
var usingEntity = "using Statistics.ORM;";

第一行是上面建的ORM， 第二行是ORM里的namespace.

 

指定正确path的edmax后，会自动生成各个继承基类GenericRepository的DAL类

最后DAL结构如下：

 

4. 视图实体定义层（ViewEntities）

主要用于用户界面交互的数据实体，以及数据实体与视图实体的转换方法，实现数据库与用户界面交互的隔离。

1) 定义一个接口IViewModel，来规定数据实体与视图实体的转换方法：

/// <summary>
    /// 数据实体与视图实体的转换
    /// </summary>
    /// <typeparam name="TV">数据实体对应的视图实体类型</typeparam>
    /// <typeparam name="TD">数据实体类型</typeparam>
    public interface IViewModel<TV, TD>
    {
        /// <summary>
        /// 数据实体转换为视图实体
        /// </summary>
        /// <param name="entity">数据实体</param>
        /// <returns>视图实体</returns>
        TV GetViewModel(TD entity);
        /// <summary>
        /// 视图实体转换为数据实体
        /// </summary>
        /// <param name="entity">视图实体</param>
        /// <returns>数据实体</returns>
        TD GetDataEntity(TV entity);
    }
}

 

2）定义枚举类型Enum：

/// <summary>
    /// 访问来源类型
    /// </summary>
    public enum NavFrom
    {
        /// <summary>
        /// 微信朋友圈
        /// </summary>
        Timeline,
        /// <summary>
        /// 微信群
        /// </summary>
        GroupMessage,
        /// <summary>
        /// 微信好友发送的链接
        /// </summary>
        SingleMessage,
        /// <summary>
        /// 直接在微信公众号中打开微信浏览器
        /// </summary>
        MicroMessenger,
        /// <summary>
        /// 其他（不是在微信中访问）
        /// </summary>
        Other
    }

    /// <summary>
    /// 分享类型
    /// </summary>
    public enum ShareType
    {
        /// <summary>
        /// 分享给好友
        /// </summary>
        Friend,
        /// <summary>
        /// 分享到朋友圈
        /// </summary>
        Timeline,
        /// <summary>
        /// 未知
        /// </summary>
        Unknown
    }

 

3） 定义每个数据实体对应的视图实体，并实现IViewModel接口的转换方法：

实体数据的转换这里使用了开源的Object-Object Mapping工具AutoMapper

• PageNavEntity:

[Serializable]
   public class PageNavEntity:IViewModel<PageNavEntity,PageNav>
   {
       static PageNavEntity()
       {
           AutoMapper.Mapper.CreateMap<PageNav, PageNavEntity>().ForMember(e=>e.From, d=>d.MapFrom(n=>(NavFrom)n.From));
           AutoMapper.Mapper.CreateMap<PageNavEntity, PageNav>().ForMember(e => e.From, d => d.MapFrom(n => (short)n.From)); ;
       }

       [Key]
       public System.Guid Id { get; set; }
       /// <summary>
       /// 页面地址
       /// </summary>
       public string Url { get; set; }

       /// <summary>
       /// 访问来源
       /// </summary>
       public NavFrom From { get; set; }

       /// <summary>
       /// 访问者微信openid
       /// </summary>
       public string NavOpenId { get; set; }

       /// <summary>
       /// 当访问来源为朋友圈时的分享者微信openid
       /// </summary>
       public string ShareOpenId { get; set; }

       /// <summary>
       /// 访问时间
       /// </summary>
       public DateTime VisitTime { get; set; }

       public PageNavEntity GetViewModel(PageNav entity)
       {
           return AutoMapper.Mapper.Map<PageNav, PageNavEntity>(entity);
       }

       public PageNav GetDataEntity(PageNavEntity entity)
       {
           return AutoMapper.Mapper.Map<PageNavEntity, PageNav>(entity);
       }
   }

 

• PageShareEntity:

[Serializable]
   public class PageShareEntity : IViewModel<PageShareEntity, PageShare>
   {
       static PageShareEntity()
       {
           AutoMapper.Mapper.CreateMap<PageShare, PageShareEntity>().ForMember(e => e.From, d => d.MapFrom(n => (ShareType)n.From));
           AutoMapper.Mapper.CreateMap<PageShareEntity, PageShare>().ForMember(e => e.From, d => d.MapFrom(n => (short)n.From));
       }

       [Key]
       public System.Guid Id { get; set; }

       /// <summary>
       /// 页面地址
       /// </summary>
       public string Url { get; set; }

       /// <summary>
       /// 分享类型
       /// </summary>
       public ShareType From { get; set; }

       /// <summary>
       /// 分享者微信openid
       /// </summary>
       public string ShareOpenId { get; set; }

       /// <summary>
       /// 上一级分享者微信openid
       /// </summary>
       public string ParentShareOpenId { get; set; }

       /// <summary>
       /// 分享时间
       /// </summary>
       public DateTime ShareTime { get; set; }

       public PageShareEntity GetViewModel(PageShare entity)
       {
           return AutoMapper.Mapper.Map<PageShare, PageShareEntity>(entity);
       }

       public PageShare GetDataEntity(PageShareEntity entity)
       {
           return AutoMapper.Mapper.Map<PageShareEntity, PageShare>(entity);
       }
   }

 

至于里面有些字段要转换一下，《用c#开发微信 (6) 微渠道 - 推广渠道管理系统 1 基础架构搭建》这里已经介绍过了，这里就不详细介绍了。

 

4） 定义用于前端图标显示的ChartData类

/// <summary>
    /// HighChart统计图表数据
    /// </summary>
    public class ChartData
    {
        /// <summary>
        /// 1小时间隔秒数
        /// </summary>
        private const decimal HourPointInterval = 3600 * 1000;
        /// <summary>
        /// 图表起始年
        /// </summary>
        public decimal StartYear { get; set; }
        /// <summary>
        /// 图表起始月
        /// </summary>
        public decimal StartMonth { get; set; }
        /// <summary>
        /// 图表起始日
        /// </summary>
        public decimal StartDay { get; set; }
        /// <summary>
        /// 线间隔
        /// </summary>
        public decimal LineInterval
        {
            get
            {
                int pointCount = Statistics.Length;
                return (pointCount % 8 == 0 ? (pointCount / 8) : (pointCount / 8 + 1)) * 3600 * 1000;
            }
        }
        /// <summary>
        /// 点间隔
        /// </summary>
        public decimal PointInterval
        {
            get
            {
                return HourPointInterval;
            }
        }
        /// <summary>
        /// 点数据集合
        /// </summary>
        public decimal[] Statistics { get; set; }
    }

 

最后视图类结构如下：

 

未完待续！！！

 

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