public static void Assocication(this PropertyDefinition self, CollectionProperty p1)
{
var name = p1.DisplayName + "-" + p1.RelationProperty.DisplayName;
if (p1.RelationProperty is Property)
{
var p = p1.RelationProperty as Property;
if (p.Owner != null && p.Owner.IsRuntimeDefine)
{
var pt = p.Owner;
if (pt != null)
{
var relationType = pt.GetTypeDefintion();
if (relationType == null)
{
throw new Exception("错误,没有找到类型定义!");
}
var relationPropertyDefine = relationType.Properties.Single(x => x.Name == p.称);
relationPropertyDefine.Assocication(name);
}
else
{
throw new Exception("关联属性只能建立在用户定义的类型上面.系统内置的类型是无法更改的!如果需要建立已有类型的关联,可以继承该类型,并增加属性建立关联!");
}
}
else
{
throw new Exception("关联属性只能建立在用户定义的类型上面!");
}
}
self.Assocication(name);
}
public PropertyDefinition BuildCollectionProperty(CollectionProperty property, TypeDefinition type)
{
//如果是一对多关系,即关联属性是单值属性时,直接在上面加上关联关系
//如果是多对多,则不需要处理,因为所属类型会执行这个动作
var mod = type.Module;
var elementType = property.PropertyType.GetTypeReference();
var ptype = mod.ImportReference(typeof(XPCollection <>)).MakeGenericType(elementType);
var propertyInfo = new PropertyDefinition(property.称, PropertyAttributes.None, ptype)
{
HasThis = true
};
type.Properties.Add(propertyInfo);
propertyInfo.Assocication(property);
if (property.Aggregated)
{
propertyInfo.Aggregate();
}
#region getter
//.method public hidebysig specialname instance string get_创建者() cil managedMono.Cecil.MethodAttributes.Public | Mono.Cecil.MethodAttributes.HideBySig | Mono.Cecil.MethodAttributes.SpecialName
var attr = MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.SpecialName | MethodAttributes.FamANDAssem | MethodAttributes.Family;
var getMethod = new MethodDefinition("get_" + property.称, attr, ptype);
var getMethodIl = getMethod.Body.GetILProcessor();
getMethod.Body.Variables.Add(new VariableDefinition(ptype));
getMethod.Body.MaxStackSize = 8;
getMethod.Body.InitLocals = true;
//.maxstack 2
//.locals init ([0] class [DevExpress.Xpo.v15.2]DevExpress.Xpo.XPCollection`1<class IMatrix.ERP.Module.BusinessObjects.员工> xps)
//L_0000: nop
//L_0001: ldarg.0
//L_0002: ldstr "\u8054\u7cfb\u4eba"
//L_0007: call instance class [DevExpress.Xpo.v15.2]DevExpress.Xpo.XPCollection`1<!!0> [DevExpress.Xpo.v15.2]DevExpress.Xpo.XPBaseObject::GetCollection<class IMatrix.ERP.Module.BusinessObjects.员工>(string)
//L_000c: stloc.0
//L_000d: br.s L_000f
//L_000f: ldloc.0
//L_0010: ret
getMethodIl.Emit(OpCodes.Nop);
getMethodIl.Emit(OpCodes.Ldarg_0);
getMethodIl.Emit(OpCodes.Ldstr, property.称);
var clrGetCollection = typeof(SimpleObject).GetMethods(SR.BindingFlags.NonPublic | SR.BindingFlags.Instance).Single(x => x.Name == "GetCollection" && x.ReturnType.IsGenericType);
var getCollection = mod.ImportReference(clrGetCollection); //(tb as TypeDefinition).Methods.Single(x => x.Name == ".ctor" && x.Parameters.First().ParameterType.FullName == typeof(Session).FullName);
getCollection = getCollection.MakeGenericMethod(elementType);
getMethodIl.Emit(OpCodes.Call, getCollection);
getMethodIl.Emit(OpCodes.Stloc_0);
var ldloc0 = getMethodIl.Create(OpCodes.Ldloc_0);
getMethodIl.Emit(OpCodes.Br_S, ldloc0);
getMethodIl.Append(ldloc0);
getMethodIl.Emit(OpCodes.Ret);
type.Methods.Add(getMethod);
propertyInfo.GetMethod = getMethod;
#endregion
return(propertyInfo);
}