Green.AgileMapper新增-Green.ObjectPickUper(do到dto对象的默认抽取)
Green.AgileMapper意在处理领域驱动开发中对象之间的Mapper(如果你还不了解Green.AgileMapper,从这里开始Green.AgileMapper开源项目的使用(1) 和Green.AgileMapper项目(2)-新增DO和DTO代码生成,项目地址:CodePlex http://agilemapper.codeplex.com/),本项目在后期会针对领域建模提供设计时候支持,利用EF和NHibernate作为底层ORM框架产生自己的领域框架,在设计时才会采用这些组件。
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在我们的领域驱动开发中,DomainObject(领域对象)是一个自然oo对象,存在许多现实世界的关系关联,在我们的View端一个View却可能需要数据并不是所有关联。经常除非特殊的UI模式,我们ViewObject往往都会被弱化,而利用Data Transfer Object代替。我们的dto从do抽取大多时候都是将do 单一Object平面化,对于级联删除更新的集合抽取,非级联集合放弃。Green.ObjectPickUper就是一种由do抽取dto的实现策略,产生符合Green.AgileMapper 映射规则的dto对象。对象抽取可能存在多样性,这里只是实现了默认抽取规则,可能不能满足你的需求,你不需要急,因为在这里采用了策略模式来满足不同抽取算法的需求(ObjectPickUperBase),Green.ObjectPickUper并不依赖Green.AgileMapper你可以自由抽取。
在Green.ObjectPickUper中利用了CodeDom实现代码生成,所以可以支持多语言(如果你还不了解CodeDom可以看这里代码生成技术-目录中CodeDom篇)。
我们看看单元测试看看Green.ObjectPickUper的简洁书写:
测试do对象仍是原对象StudentDo,参考CodePlex http://agilemapper.codeplex.com/
- [TestMethod]
- public void ObjectPickUper_GenCode_Test()
- {
- ObjectPickUperManager.Instance.IsSOAObject = false;
- var str = ObjectPickUperManager.Instance.PickUp
("DTO"); - var str1 = ObjectPickUperManager.Instance.PickUp
("DTO"); - var str2 = ObjectPickUperManager.Instance.PickUp
("DTO"); - Assert.IsTrue(!string.IsNullOrEmpty(str));
- //验证编译是否正确
- CompilerParameters option = new CompilerParameters();
- option.GenerateExecutable = false;
- option.GenerateInMemory = true;
- option.IncludeDebugInformation = false;
- option.ReferencedAssemblies.Add("System.dll");
- option.ReferencedAssemblies.Add(typeof(System.Linq.IQueryable).Assembly.Location);
- option.ReferencedAssemblies.Add(typeof(StudenDo).Assembly.Location);
- option.ReferencedAssemblies.Add(typeof(Green.AgileMapper.CollectionMappingAttribute).Assembly.Location);
- var result = CodeDomProvider.CreateProvider("c#").CompileAssemblyFromSource(option, str, str1, str2);
- var assembly = result.CompiledAssembly;
- Assert.IsFalse(result.Errors.HasErrors, "编译错误");
- }
这里采用CodeDom动态编译,查看是否存在编译错误。
生成dto:
- namespace Green.AgileMapper.Test
- {
- using System;
- using System.Collections.Generic;
- using System.Linq;
- using System.Text;
- [System.SerializableAttribute()]
- public class StudenDoDTO : System.ComponentModel.INotifyPropertyChanged, System.ICloneable
- {
- private int _ID;
- private Green.AgileMapper.Test.Sex _Sex;
- private System.Collections.Generic.List
_CourseIds; - private string _AddressCountry;
- private string _AddressProvince;
- private string _AddressStreet;
- private string _AddressParticular;
- private Green.AgileMapper.Test.ContactWayDTO _ContactWay;
- private System.Collections.Generic.List
_Propertys; - public int ID
- {
- get
- {
- return this._ID;
- }
- set
- {
- if ((this._ID != value))
- {
- this._ID = value;
- this.OnNotifyPropertyChanged("ID");
- }
- }
- }
- public Green.AgileMapper.Test.Sex Sex
- {
- get
- {
- return this._Sex;
- }
- set
- {
- if ((this._Sex != value))
- {
- this._Sex = value;
- this.OnNotifyPropertyChanged("Sex");
- }
- }
- }
- [Green.AgileMapper.CollectionMappingAttribute(Name="CourseIds", IsConvertTo=true, IsConvertFrom=true, IsDeleteNotInFromItem=true)]
- public System.Collections.Generic.List
CourseIds - {
- get
- {
- return this._CourseIds;
- }
- set
- {
- if ((this._CourseIds != value))
- {
- this._CourseIds = value;
- this.OnNotifyPropertyChanged("CourseIds");
- }
- }
- }
- [Green.AgileMapper.MappingAttribute(Name="Address.Country", IsConvertTo=true, IsConvertFrom=true)]
- public string AddressCountry
- {
- get
- {
- return this._AddressCountry;
- }
- set
- {
- if ((this._AddressCountry != value))
- {
- this._AddressCountry = value;
- this.OnNotifyPropertyChanged("AddressCountry");
- }
- }
- }
- [Green.AgileMapper.MappingAttribute(Name="Address.Province", IsConvertTo=true, IsConvertFrom=true)]
- public string AddressProvince
- {
- get
- {
- return this._AddressProvince;
- }
- set
- {
- if ((this._AddressProvince != value))
- {
- this._AddressProvince = value;
- this.OnNotifyPropertyChanged("AddressProvince");
- }
- }
- }
- [Green.AgileMapper.MappingAttribute(Name="Address.Street", IsConvertTo=true, IsConvertFrom=true)]
- public string AddressStreet
- {
- get
- {
- return this._AddressStreet;
- }
- set
- {
- if ((this._AddressStreet != value))
- {
- this._AddressStreet = value;
- this.OnNotifyPropertyChanged("AddressStreet");
- }
- }
- }
- [Green.AgileMapper.MappingAttribute(Name="Address.Particular", IsConvertTo=true, IsConvertFrom=true)]
- public string AddressParticular
- {
- get
- {
- return this._AddressParticular;
- }
- set
- {
- if ((this._AddressParticular != value))
- {
- this._AddressParticular = value;
- this.OnNotifyPropertyChanged("AddressParticular");
- }
- }
- }
- [Green.AgileMapper.ObjectMappingAttribute(Name="ContactWay")]
- public Green.AgileMapper.Test.ContactWayDTO ContactWay
- {
- get
- {
- return this._ContactWay;
- }
- set
- {
- if ((this._ContactWay != value))
- {
- this._ContactWay = value;
- this.OnNotifyPropertyChanged("ContactWay");
- }
- }
- }
- [Green.AgileMapper.CollectionMappingAttribute(Name="Propertys", IsConvertTo=true, IsConvertFrom=true, IsDeleteNotInFromItem=true, EqualExpression=null)]
- public System.Collections.Generic.List
Propertys - {
- get
- {
- return this._Propertys;
- }
- set
- {
- if ((this._Propertys != value))
- {
- this._Propertys = value;
- this.OnNotifyPropertyChanged("Propertys");
- }
- }
- }
- public event System.ComponentModel.PropertyChangedEventHandler PropertyChanged;
- public void OnNotifyPropertyChanged(string property)
- {
- if ((this.PropertyChanged != null))
- {
- this.PropertyChanged(this, new System.ComponentModel.PropertyChangedEventArgs(property));
- }
- }
- public object Clone()
- {
- StudenDoDTO cloneObj;
- cloneObj = new StudenDoDTO();
- cloneObj._ID = this.ID;
- cloneObj._Sex = this.Sex;
- System.Collections.Generic.List
CourseIdsList; - CourseIdsList = new System.Collections.Generic.List
(); - if ((this.CourseIds != null))
- {
- int i;
- for (i = 0; (i < this.CourseIds.Count); i = (i + 1))
- {
- CourseIdsList.Add(this.CourseIds[i]);
- }
- }
- cloneObj._CourseIds = CourseIdsList;
- cloneObj._AddressCountry = this.AddressCountry;
- cloneObj._AddressProvince = this.AddressProvince;
- cloneObj._AddressStreet = this.AddressStreet;
- cloneObj._AddressParticular = this.AddressParticular;
- cloneObj._ContactWay = ((Green.AgileMapper.Test.ContactWayDTO)(this.ContactWay.Clone()));
- System.Collections.Generic.List<Green.AgileMapper.Test.KeyValuePairDTO> PropertysList;
- PropertysList = new System.Collections.Generic.List
(); - if ((this.Propertys != null))
- {
- int i;
- for (i = 0; (i < this.Propertys.Count); i = (i + 1))
- {
- PropertysList.Add(((Green.AgileMapper.Test.KeyValuePairDTO)(this.Propertys[i].Clone())));
- }
- }
- cloneObj._Propertys = PropertysList;
- return cloneObj;
- }
- }
- }
源代码参加:CodePlex http://agilemapper.codeplex.com/
其他相关博文:
1:Green.AgileMapper开源项目的使用(1)
2:Green.AgileMapper项目(2)-新增DO和DTO代码生成
3:代码生成技术-目录
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