public IEntityPropertyBuilder <TProperty> Property <TProperty>(Expression <Func <TEntity, TProperty> > property)
{
string propertyName = PropertyNameExtractor.Extract(property);
IEntityPropertyBuilder <TProperty> propertyBuilder = this.Property(propertyName) as IEntityPropertyBuilder <TProperty>;
return(propertyBuilder);
}
public IEntityPropertyBuilder Property(string property)
{
EntityProperty entityProperty = this.EntityType.Properties.FirstOrDefault(a => a.Property.Name == property);
if (entityProperty == null)
{
throw new ArgumentException($"The mapping property list doesn't contain property named '{property}'.");
}
IEntityPropertyBuilder propertyBuilder = Activator.CreateInstance(typeof(EntityPropertyBuilder <>).MakeGenericType(entityProperty.Property.PropertyType), entityProperty) as IEntityPropertyBuilder;
return(propertyBuilder);
}
public EntityBuilder(IModelDataStorage <Type> storage)
{
storage_ = storage;
entityRelationshipFactory_ = new EntityRelationshipFactory();
entityPropertyBuilder_ = new EntityPropertyBuilder <TEntity>(storage_);
}
void ConfigureColumnMapping()
{
var propertyInfos = this.EntityType.Properties.Select(a => a.Property).ToList();
foreach (PropertyInfo propertyInfo in propertyInfos)
{
IEntityPropertyBuilder propertyBuilder = this.Property(propertyInfo.Name);
propertyBuilder.IsPrimaryKey(false);
propertyBuilder.IsAutoIncrement(false);
var propertyAttributes = propertyInfo.GetCustomAttributes();
foreach (Attribute propertyAttribute in propertyAttributes)
{
if (propertyAttribute is NotMappedAttribute)
{
this.Ignore(propertyInfo.Name);
}
propertyBuilder.HasAnnotation(propertyAttribute);
if (propertyAttribute is ColumnAttribute)
{
ColumnAttribute columnAttribute = (ColumnAttribute)propertyAttribute;
if (!string.IsNullOrEmpty(columnAttribute.Name))
{
propertyBuilder.MapTo(columnAttribute.Name);
}
propertyBuilder.IsPrimaryKey(columnAttribute.IsPrimaryKey);
propertyBuilder.HasDbType(columnAttribute.GetDbType());
propertyBuilder.HasSize(columnAttribute.GetSize());
propertyBuilder.HasScale(columnAttribute.GetScale());
propertyBuilder.HasPrecision(columnAttribute.GetPrecision());
}
if (propertyAttribute is AutoIncrementAttribute)
{
propertyBuilder.IsAutoIncrement();
}
if (propertyAttribute is SequenceAttribute)
{
propertyBuilder.HasSequence((propertyAttribute as SequenceAttribute).Name);
}
}
}
List <EntityProperty> primaryKeys = this.EntityType.Properties.Where(a => a.IsPrimaryKey).ToList();
if (primaryKeys.Count == 0)
{
//如果没有定义任何主键，则从所有映射的属性中查找名为 id 的属性作为主键
EntityProperty idNameProperty = this.EntityType.Properties.Find(a => a.Property.Name.ToLower() == "id" && !a.Property.IsDefined(typeof(ColumnAttribute)));
if (idNameProperty != null)
{
idNameProperty.IsPrimaryKey = true;
primaryKeys.Add(idNameProperty);
}
}
if (primaryKeys.Count == 1 && this.EntityType.Properties.Count(a => a.IsAutoIncrement) == 0)
{
/* 如果没有显示定义自增成员，并且主键只有 1 个，如果该主键满足一定条件，则默认其是自增列 */
EntityProperty primaryKey = primaryKeys[0];
if (Utils.IsAutoIncrementType(primaryKey.Property.PropertyType) && !primaryKey.Property.IsDefined(typeof(NonAutoIncrementAttribute)))
{
primaryKey.IsAutoIncrement = true;
}
}
}
/// <summary>
/// 标识字段为 timestamp 类型
/// </summary>
/// <param name="entityPropertyBuilder"></param>
/// <returns></returns>
public static IEntityPropertyBuilder IsTimestamp(this IEntityPropertyBuilder entityPropertyBuilder)
{
return(entityPropertyBuilder.HasAnnotation(new TimestampAttribute()));
}
