XAF-DevExpress.ExpressApp.DC.Xpo.XpoTypeInfoSource 生成实体的过程-学习笔记

时间:2023-03-09 15:31:31
XAF-DevExpress.ExpressApp.DC.Xpo.XpoTypeInfoSource 生成实体的过程-学习笔记
//目的,想自己生成实体类,不走dc的生成机制,所以研究一下此方法。
public void GenerateEntities(string generatedAssemblyFile)
{
lock (this.lockObjectForDC)
{
     //此数组为要生成代码的接口类型
Type[] entityInterfaces = this.entitiesToGenerateInfo.GetEntityInterfaces();
if (!this.IsAlreadyBuild && (entityInterfaces.Length > ))
{
        //生成过了,且有实体接口,有文件的情况下,直接加载
if (File.Exists(generatedAssemblyFile))
{
this.generatedAssembly = Assembly.LoadFrom(generatedAssemblyFile);
}
else
{
          //没有文件,马上生成一个。
DCBuilder builder = new DCBuilder(this.typesInfo);
builder.Setup(this.entitiesToGenerateInfo, this.customLogics, this.existingImplementorsInfo);
this.generatedAssembly = builder.GetAssembly(generatedAssemblyFile);
}
this.ProcessGeneratedAssembly(this.generatedAssembly);
          //遍历所有的实体类,即接口定义
Dictionary<Type, object> dictionary = new Dictionary<Type, object>();
foreach (Type type in entityInterfaces)
{
        //没处理过的
if (!dictionary.ContainsKey(type))
{
dictionary.Add(type, null);
              //标记为处理过。
              //处理“基”接口
foreach (Type type2 in type.GetInterfaces())
{
              //已经注册过的实体类中包含这个接,且,没处理过此接口时,把基接口也加进来
if (this.registeredEntityTypes.Contains(type2) && !dictionary.ContainsKey(type2))
{
dictionary.Add(type2, null);
}
}
}
}
foreach (Type type3 in dictionary.Keys)
{
          //上面收集到了所有需要用到的接口,刷新类型信息。使用实际类型查找接口
this.typesInfo.RefreshInfo(type3);
Type entityTypeByInterface = this.GetEntityTypeByInterface(type3);
if (entityTypeByInterface != null)
{
this.typesInfo.RefreshInfo(entityTypeByInterface);
foreach (TypeInfo info in this.typesInfo.FindTypeInfo(entityTypeByInterface).RequiredTypes)
{
info.Refresh(true);
}
}
Type dataTypeByInterface = this.GetDataTypeByInterface(type3);
if (dataTypeByInterface != null)
{
this.typesInfo.RefreshInfo(dataTypeByInterface);
}
}
    
foreach (Type type6 in this.generatedAssembly.GetExportedTypes())
{
if (this.TypeIsKnown(type6))
{
TypeInfo info2 = this.typesInfo.FindTypeInfo(type6);
if ((info2 != null) && (info2.Source != this))
{
info2.Source = this;
this.typesInfo.RefreshInfo(type6);
              //类typeinfo附source的值,即TypeInfoSource
}
}
}
}
}
}