1
我試圖通過加載另一個類的模型來生成一個類，這裏是我使用T4腳手架 - 如何檢測可空類型
using System;
using System.Text;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
namespace Sma.Domain.Model {
public class Smartistdetails {
public Smartistdetails() { }
[Key]
public int ArtistID { get; set; }
public string BandName? { get; set; }
public string LoginName { get; set; }
public string Password { get; set; }
}
}
的類\模型，你看到有一些可空的類型，如public string BandName? { get; set; }這是我遇到問題的地方。我可以成功地做出輸出類，但是當模型的屬性可以爲空時，我想檢測它並採取相應的行動，但我不知道該怎麼做。
這裏是Map(x=>x.<#= property.Name #>).Column("<#= property.Name #>");之前我T4模板
<#@ Template Language="C#" HostSpecific="True" Inherits="DynamicTransform" #>
<#@ Output Extension="cs" #>
<#@ import namespace="System.Collections" #>
<#@ import namespace="System.Collections.Generic" #>
<#@ import namespace="System" #>
<#@ import namespace="EnvDTE" #>
<#@ assembly name="System.ComponentModel.DataAnnotations" #>
<#@ assembly name="System.Core" #>
<#@ assembly name="System.Data.Entity" #>
<#@ assembly name="System.Data.Linq" #>
<#@ import namespace="System.Data.Linq.Mapping" #>
<#@ import namespace="System.Linq" #>
<#@ import namespace="System.Collections.Generic" #>
<#@ import namespace="System.Data.Objects.DataClasses" #>
<#@ import namespace="System.Reflection" #>
<#@ import namespace="System.Collections" #>
<#@ import namespace="System.Text.RegularExpressions" #>
using System;
using System.Collections.Generic;
using System.Text;
using FluentNHibernate.Mapping;
using Sma.Domain.Model;
<#
var modelType = (CodeType)Model.ModelType;
var modelName = modelType.Name;
var properties = modelType.VisibleMembers().OfType<CodeProperty>();
var primaryKeyProperty = modelType.VisibleMembers().OfType<CodeProperty>().Single(x => x.Name == Model.PrimaryKey);
#>
namespace <#= Model.Namespace #>.Mapping
{
public class <#= Model.EntityName #>Map : ClassMap<<#= Model.EntityName #>>
{
public <#= Model.EntityName #>Map() {
Table("<#= Model.EntityName #>");
LazyLoad();
<# var type = "";
var typeName = "";
foreach (var property in properties)
{
type = GetType(property.Type);
typeName = GetTypeName(property.Type);
if(isType(type))
{
if(Model.PrimaryKey == property.Name)
{
#>
Id(x => x.<#= property.Name #>).GeneratedBy.Identity().Column("<#= property.Name #>");
<#
}
else
{
#>
Map(x=>x.<#= property.Name #>).Column("<#= property.Name #>");
<#}
}
else
{
#>
References(x=>x.<#= property.Name #>);
<#
}
}
#> }
}
}
<#+
string GetType(EnvDTE.CodeTypeRef type)
{
string str = "";
if (type.UnderlyingTypeIs<byte>())
str = "byte";
else if (type.UnderlyingTypeIs<sbyte>())
str = "sbyte";
else if (type.UnderlyingTypeIs<int>())
str = "int";
else if (type.UnderlyingTypeIs<uint>())
str = "uint";
else if (type.UnderlyingTypeIs<short>())
str = "short";
else if (type.UnderlyingTypeIs<ushort>())
str = "ushort";
else if (type.UnderlyingTypeIs<DateTime>())
str = "DateTime";
else if (type.UnderlyingTypeIs<long>())
str = "long";
else if (type.UnderlyingTypeIs<ulong>())
str = "ulong";
else if (type.UnderlyingTypeIs<double>())
str = "double";
else if (type.UnderlyingTypeIs<bool>())
str = "bool";
else if (type.UnderlyingTypeIs<string>())
str = "string";
else if (type.UnderlyingTypeIs<decimal>())
str = "decimal";
else
str = type.AsFullName.ToString();
return str;
}
string GetTypeName(EnvDTE.CodeTypeRef type)
{
string str = type.AsFullName.ToString();
return str;
}
bool isType(string _type)
{
if(_type == "byte") return true;
else if(_type == "sbyte") return true;
else if(_type == "int") return true;
else if(_type == "uint") return true;
else if(_type == "short") return true;
else if(_type == "ushort") return true;
else if(_type == "DateTime") return true;
else if(_type == "long") return true;
else if(_type == "ulong") return true;
else if(_type == "double") return true;
else if(_type == "bool") return true;
else if(_type == "string") return true;
else if(_type == "decimal") return true;
return false;
}
#>
我要檢查，如果該屬性爲空，如果不是我想指定Map(x=>x.<#= property.Name #>).Column("<#= property.Name #>").NotNullable();
怎麼辦呢
只是 - 這裏是我的.ps1 powershell腳本
[T4Scaffolding.Scaffolder(Description = "Enter a description of ExtMapping here")][CmdletBinding()]
param(
[parameter(Mandatory = $true, ValueFromPipelineByPropertyName = $true)][string]$ModelType,
[string]$Project,
[string]$CodeLanguage,
[string[]]$TemplateFolders,
[switch]$Force = $false
)
$mynamespace = "Sma"
$projectFor = $mynamespace + ".Infrastructure.Data"
$namespace = $projectFor # (Get-Project $projectFor).Properties.Item("DefaultNamespace").Value
$outputPath = "Mapping\" + $ModelType
Write-Host "Scaffolding $ModelType ExtMapping..."
$useModelFromProject = $mynamespace + ".Domain"
# get the modelType object from the name
$foundModelType = Get-ProjectType $ModelType -Project $useModelFromProject -BlockUi
$primaryKey = Get-PrimaryKey $ModelType -Project $useModelFromProject
$modelOutputPath = "Mapping\" + $ModelType + "Map"
Add-ProjectItemViaTemplate $modelOutputPath -Template ExtMapping `
-Model @{
Namespace = $namespace;
ModelType = [MarshalByRefObject]$foundModelType;
PrimaryKey = $primaryKey;
EntityName = $ModelType } `
-SuccessMessage "Added ExtMapping output at $projectFor" `
-TemplateFolders $TemplateFolders -Project $projectFor -CodeLanguage $CodeLanguage -Force:$Force