private void UpdateRelations(IEntity entity)
{
var entityEx = entity.As <IEntityStatefulExtension>();
if (entityEx == null)
{
return;
}
var relProperties = PropertyUnity.GetRelatedProperties(entity.EntityType);
foreach (var property in relProperties)
{
var relationPro = property as RelationProperty;
var value = entityEx.GetDirectValue(property);
if (value == null)
{
continue;
}
switch (relationPro.RelationPropertyType)
{
case RelationPropertyType.EntitySet:
var list = PropertyValueHelper.GetValue <IEnumerable>(value);
EntityUtility.AttachPrimaryKeyValues(entity, relationPro, list);
Save(list);
break;
case RelationPropertyType.Entity:
SaveRelationEntity(PropertyValueHelper.GetValue <IEntity>(value));
break;
}
}
}
internal static IEnumerable <PropertyFieldMapping> GetDbMapping(Type entityType)
{
return(from s in PropertyUnity.GetLoadedProperties(entityType, true)
let name = string.IsNullOrEmpty(s.Info.FieldName) ? s.Name : s.Info.FieldName
let dbType = s.Info.DataType == null ? DbType.String : s.Info.DataType.Value
select new PropertyFieldMapping(s.Name, s.Info.FieldName, s.Type, dbType)
{
ValueFunc = e => PropertyValueHelper.GetValueSafely(((IEntity)e).InternalGetValue(s))
});
}
private PropertyValue GetSupportedValue(bool isNull, PropertyMapping mapper, IDataReader reader)
{
try
{
if (mapper.Property.Type == typeof(Guid))
{
return(isNull ? new Guid?() : new Guid(reader.GetValue(mapper.Index).ToString()));
}
var typeCode = Type.GetTypeCode(mapper.Property.Type.GetNonNullableType());
switch (typeCode)
{
case TypeCode.Boolean:
return(isNull ? new bool?() : RecordWrapper.GetBoolean(reader, mapper.Index));
case TypeCode.Char:
return(isNull ? new char?() : RecordWrapper.GetChar(reader, mapper.Index));
case TypeCode.Byte:
return(isNull ? new byte?() : RecordWrapper.GetByte(reader, mapper.Index));
case TypeCode.Int16:
return(isNull ? new short?() : RecordWrapper.GetInt16(reader, mapper.Index));
case TypeCode.Int32:
return(isNull ? new int?() : RecordWrapper.GetInt32(reader, mapper.Index));
case TypeCode.Int64:
return(isNull ? new long?() : RecordWrapper.GetInt64(reader, mapper.Index));
case TypeCode.Decimal:
return(isNull ? new decimal?() : RecordWrapper.GetDecimal(reader, mapper.Index));
case TypeCode.Double:
return(isNull ? new double?() : RecordWrapper.GetDouble(reader, mapper.Index));
case TypeCode.String:
return(isNull ? string.Empty : RecordWrapper.GetString(reader, mapper.Index));
case TypeCode.DateTime:
return(isNull ? new DateTime?() : RecordWrapper.GetDateTime(reader, mapper.Index));
case TypeCode.Single:
return(isNull ? new float?() : RecordWrapper.GetFloat(reader, mapper.Index));
default:
return(PropertyValueHelper.NewValue(RecordWrapper.GetValue(reader, mapper.Index)));
}
}
catch (Exception ex)
{
throw new RowMapperCastException(mapper.Property.Name, mapper.Property.Type, ex);
}
}
private bool InternalCreate(IEntity entity)
{
var parameters = new ParameterCollection();
var context = CreateContext(parameters);
var sql = EntityPersistentQueryBuilder.BuidCreateQuery(context, entity);
if (!sql.IsNullOrEmpty())
{
var rootType = entity.EntityType.GetRootType();
//找出自增长序列的属性
var incProperty = PropertyUnity.GetPersistentProperties(rootType).FirstOrDefault(s => s.Info.GenerateType == IdentityGenerateType.AutoIncrement);
if (incProperty != null)
{
if (!string.IsNullOrEmpty(context.Syntax.IdentitySelect))
{
//获得当前插入的自增长序列值
var identitySelect = context.Syntax.IdentitySelect;
if (!identitySelect.StartsWith(";"))
{
identitySelect = ";" + identitySelect;
}
var incValue = PropertyValueHelper.NewValue(context.Database.ExecuteScalar <int>(sql + identitySelect, context.Parameters));
entity.InternalSetValue(incProperty, incValue);
return(!incValue.IsNullOrEmpty());
}
else
{
//使用生成器生成值
var generator = context.Database.Provider.GetService <IGeneratorProvider>();
if (generator != null)
{
var metadata = EntityMetadataUnity.GetEntityMetadata(entityType);
var inc = generator.GenerateValue(context.Database, context.Environment == null ? metadata.TableName : context.Environment.GetVariableTableName(metadata), incProperty.Info.FieldName);
entity.InternalSetValue(incProperty, inc);
parameters.Clear();
sql = EntityPersistentQueryBuilder.BuidCreateQuery(context, entity);
return(context.Database.ExecuteNonQuery(sql, context.Parameters) > 0);
}
}
}
return(database.ExecuteNonQuery(sql, parameters) > 0);
}
return(false);
}
private PropertyValue GetSupportedValue(bool isNull, PropertyMapping mapper, DataRow row)
{
if (mapper.Property.Type == typeof(Guid))
{
return(isNull ? new Guid?() : new Guid(row[mapper.Index].ToString()));
}
var typeCode = Type.GetTypeCode(mapper.Property.Type.GetNonNullableType());
switch (typeCode)
{
case TypeCode.Boolean:
return(isNull ? new bool?() : Convert.ToBoolean(row[mapper.Index]));
case TypeCode.Char:
return(isNull ? new char?() : Convert.ToChar(row[mapper.Index]));
case TypeCode.Byte:
return(isNull ? new byte?() : Convert.ToByte(row[mapper.Index]));
case TypeCode.Int16:
return(isNull ? new short?() : Convert.ToInt16(row[mapper.Index]));
case TypeCode.Int32:
return(isNull ? new int?() : Convert.ToInt32(row[mapper.Index]));
case TypeCode.Int64:
return(isNull ? new long?() : Convert.ToInt64(row[mapper.Index]));
case TypeCode.Decimal:
return(isNull ? new decimal?() : Convert.ToDecimal(row[mapper.Index]));
case TypeCode.Double:
return(isNull ? new double?() : Convert.ToDouble(row[mapper.Index]));
case TypeCode.String:
return(isNull ? string.Empty : Convert.ToString(row[mapper.Index]));
case TypeCode.DateTime:
return(isNull ? new DateTime?() : Convert.ToDateTime(row[mapper.Index]));
case TypeCode.Single:
return(isNull ? new float?() : Convert.ToSingle(row[mapper.Index]));
default:
return(PropertyValueHelper.NewValue(row[mapper.Index]));
}
}
private PropertyValue GetPropertyValue(PropertyMapping mapper, Func <int, bool> funcIsNull, Func <int, object> funcGetValue, Func <bool, PropertyValue> funcRead)
{
var isNull = funcIsNull(mapper.Index);
if (mapper.Property.Type.IsArray &&
mapper.Property.Type.GetElementType() == typeof(byte))
{
return(isNull ? new byte[0] : (byte[])funcGetValue(mapper.Index));
}
if (mapper.Property.Type.IsEnum)
{
return(GetEnumValue(mapper, isNull, funcGetValue));
}
if (PropertyValueHelper.IsSupportedType(mapper.Property.Type))
{
return(funcRead(isNull));
}
return(GetConvertedValue(mapper, isNull, funcGetValue));
}
/// <summary>
/// 获取指定属性的值。
/// </summary>
/// <typeparam name="T">值的类型。</typeparam>
/// <param name="property">实体属性。</param>
/// <returns></returns>
public virtual T GetValue <T>(IProperty property)
{
return(PropertyValueHelper.GetValue <T>(GetValue(property)));
}
/// <summary>
/// 设置指定属性的值。
/// </summary>
/// <typeparam name="T">值的类型。</typeparam>
/// <param name="property">实体属性。</param>
/// <param name="value">要设置的值。</param>
public virtual void SetValue <T>(IProperty property, T value)
{
SetValue(property, PropertyValueHelper.NewValue(value, property.Type));
}