/// <summary>
/// 创建数据表元数据。
/// </summary>
/// <param name="itemType">数据项CLR类型。</param>
/// <param name="attr">表的特性。</param>
/// <param name="engine">元数据引擎。</param>
public TableMetadata(Type itemType, TableAttribute attr, MetadataEngine engine)
: this(itemType, attr.Name, engine, attr.MapInheritedProperties)
{
if (!string.IsNullOrEmpty(attr.Schema))
{
Schema = attr.Schema;
}
}
/// <summary>
/// 创建数据表元数据。
/// </summary>
/// <param name="itemType">数据项CLR类型。</param>
/// <param name="name">强制表名 。</param>
/// <param name="engine">元数据引擎。</param>
/// <param name="inheritedProperties">是否继承父级属性。</param>
public TableMetadata(Type itemType, string name, MetadataEngine engine, bool inheritedProperties = true)
: base(itemType, engine)
{
Name = name;
var columns = InitialMembers(itemType, inheritedProperties, out TableMetadata keyOwner);
if (keyOwner == this)
{
Keys = InitialKeys(keyOwner, ref columns);
}
else
{
Keys = keyOwner.Keys;
}
Members = new MemberCollection <ColumnMetadata>(columns);
RefreshConcurrencys();
}
/// <summary>
/// 创建类型元数据。
/// </summary>
/// <param name="itemType">数据项的CLR类型。</param>
/// <param name="engine">元数据引擎。</param>
public TypeMetadata(Type itemType, MetadataEngine engine)
: base(itemType, engine)
{
ComplexMembers = new MemberCollection <MemberMetadata>();
List <MemberMetadata> primarys = null;
if (itemType.IsAnonymous())
{
var constructor = itemType.GetConstructors()[0];
var parameters = constructor.GetParameters();
var query = from a in parameters
join b in itemType.GetProperties() on a.ParameterType equals b.PropertyType
select b;
foreach (var property in query)
{
var propertyType = property.PropertyType;
if (propertyType.IsComplexCollection())
{
ComplexMembers.Add(new MemberMetadata(property, MemberKind.Collection));
}
else if (propertyType.IsObject())
{
ComplexMembers.Add(new MemberMetadata(property, MemberKind.Object));
}
}
primarys = itemType.GetProperties()
.Where(a => a.PropertyType.IsPrimary()).Sort()
.Select(a => new MemberMetadata(a, MemberKind.Primary)).ToList();
}
else
{
foreach (var property in itemType.GetProperties().Sort())
{
var propertyType = property.PropertyType;
if (propertyType.IsComplexCollection())
{
ComplexMembers.Add(new MemberMetadata(property, MemberKind.Collection));
}
else if (propertyType.IsObject())
{
ComplexMembers.Add(new MemberMetadata(property, MemberKind.Object));
}
}
var table = engine.TryGetTable(itemType);
if (table.InheritSets.Length == 0)
{
primarys = table.Members.Select(a => new MemberMetadata(a.Member, MemberKind.Primary)).ToList();
}
else
{
primarys = table.InheritSets
.SelectMany(a => a.Members)
.Union(table.Members).Select(b => new MemberMetadata(b.Member, MemberKind.Primary)).ToList();
}
KeyIndexs = new int[table.Keys.Length];
for (int i = 0; i < KeyIndexs.Length; i++)
{
KeyIndexs[i] = i;
}
}
PrimaryMembers = new MemberCollection <MemberMetadata>(primarys);
}
/// <summary>
/// 创建类型元数据基类。
/// </summary>
/// <param name="itemType">CLR类型。</param>
/// <param name="engine">元数据引擎。</param>
public TypeMetadataBase(Type itemType, MetadataEngine engine)
{
Engine = engine;
ClrType = itemType;
}