/// <summary>
/// 初始化成员集合
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
protected virtual MemberAccessorCollection Initialize(Type type)
{
// Fix issue#多线程下导致 FieldCount 不正确
// 单个实例只初始化一次
//Fixed issue#匿名类的属性不可写
//匿名类：new{ClientId=a.ClientId}
if (!_isInitialize)
{
lock (_lock)
{
if (!_isInitialize)
{
var members = new MemberAccessorCollection();
var navMembers = new MemberAccessorCollection();
var keyMembers = new MemberAccessorCollection();
FieldAccessorBase identityMember = null;
var sources = this.GetTypeMembers(type, _includePrivates).Select(a => MemberAccessorBase.Create(a));
foreach (var m in sources)
{
if (m.GetCustomAttribute <System.Runtime.CompilerServices.CompilerGeneratedAttribute>() != null)
{
continue;
}
// 添加成员
members.Add(m);
var field = m as FieldAccessorBase;
if (field != null)
{
if (field.IsKey)
{
keyMembers.Add(field);
}
if (field.IsIdentity)
{
identityMember = field;
}
if (field.IsNavigation)
{
navMembers.Add(field);
}
}
}
_members = members;
_navMembers = navMembers;
_keyMembers = keyMembers;
_identityMember = identityMember;
_isInitialize = true;
}
}
}
return(_members);
}
// 获取成员包装器的外键特性
private ForeignKeyAttribute GetForeignKeyAttribute(FieldAccessorBase m, string memberName)
{
if (m == null)
{
throw new XFrameworkException("Member {0}.{1} not found.", _type.Name, memberName);
}
var attribute = m.GetCustomAttribute <ForeignKeyAttribute>();
if (attribute == null)
{
// 如果是属性，要求标记为 virtual
var property = m as PropertyAccessor;
if (property != null)
{
var getMethod = property.Member.GetGetMethod(true);
if (getMethod != null && !getMethod.IsVirtual)
{
return(null);
}
}
// 区分一对一和一对多导航属性
var navEntityType = m.CLRType.IsGenericType ? m.CLRType.GetGenericArguments()[0] : m.CLRType;
var navTypeRuntime = TypeRuntimeInfoCache.GetRuntimeInfo(navEntityType);
if (TypeUtils.IsCollectionType(m.CLRType))
{
// 1:n 关系，外键实体必须持有当前实体的所有主键属性
int index = 0;
string[] innerKeys = null;
string[] outerKeys = null;
foreach (FieldAccessorBase inner in this.KeyMembers)
{
if (!navTypeRuntime.Members.Contains(inner.Name))
{
innerKeys = null;
outerKeys = null;
break;
}
else
{
var outer = navTypeRuntime.GetMember <FieldAccessorBase>(inner.Name);
if (outer == null)
{
innerKeys = null;
outerKeys = null;
break;
}
else
{
if (innerKeys == null)
{
innerKeys = new string[this.KeyMembers.Count];
}
if (outerKeys == null)
{
outerKeys = new string[this.KeyMembers.Count];
}
innerKeys[index] = inner.Column != null && !string.IsNullOrEmpty(inner.Column.Name) ? inner.Column.Name : inner.Name;
outerKeys[index] = inner.Column != null && !string.IsNullOrEmpty(inner.Column.Name) ? inner.Column.Name : inner.Name;
}
}
index += 1;
}
if (innerKeys != null)
{
attribute = new ForeignKeyAttribute(innerKeys, outerKeys);
}
}
else
{
// 1:1 关系，分两种情况
// 1. 当前实体持有外键实体的主键属性
// 2. 外键实体持有当前实体的主键属性
if (navTypeRuntime.KeyMembers.Count > 0)
{
int index = 0;
string[] innerKeys = null;
string[] outerKeys = null;
foreach (FieldAccessorBase outer in navTypeRuntime.KeyMembers)
{
if (!this.Members.Contains(outer.Name))
{
innerKeys = null;
outerKeys = null;
break;
}
else
{
var inner = this.GetMember <FieldAccessorBase>(outer.Name);
if (inner == null)
{
innerKeys = null;
outerKeys = null;
break;
}
else
{
if (innerKeys == null)
{
innerKeys = new string[navTypeRuntime.KeyMembers.Count];
}
if (outerKeys == null)
{
outerKeys = new string[navTypeRuntime.KeyMembers.Count];
}
innerKeys[index] = inner.Column != null && !string.IsNullOrEmpty(inner.Column.Name) ? inner.Column.Name : inner.Name;
outerKeys[index] = outer.Column != null && !string.IsNullOrEmpty(outer.Column.Name) ? outer.Column.Name : outer.Name;
}
}
index += 1;
}
if (innerKeys != null)
{
attribute = new ForeignKeyAttribute(innerKeys, outerKeys);
}
}
if (attribute == null)
{
int index = 0;
string[] innerKeys = null;
string[] outerKeys = null;
foreach (FieldAccessorBase inner in this.KeyMembers)
{
if (!navTypeRuntime.Members.Contains(inner.Name))
{
innerKeys = null;
outerKeys = null;
break;
}
else
{
var outer = navTypeRuntime.GetMember <FieldAccessorBase>(inner.Name);
if (outer == null)
{
innerKeys = null;
outerKeys = null;
break;
}
else
{
if (innerKeys == null)
{
innerKeys = new string[this.KeyMembers.Count];
}
if (outerKeys == null)
{
outerKeys = new string[this.KeyMembers.Count];
}
innerKeys[index] = inner.Column != null && !string.IsNullOrEmpty(inner.Column.Name) ? inner.Column.Name : inner.Name;
outerKeys[index] = inner.Column != null && !string.IsNullOrEmpty(inner.Column.Name) ? inner.Column.Name : inner.Name;
}
}
index += 1;
}
if (innerKeys != null)
{
attribute = new ForeignKeyAttribute(innerKeys, outerKeys);
}
}
}
}
return(attribute);
}
