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 = @"..\ORM\Statistics.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 = @"..\ORM\Statistics.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！！！