public PersistanceColumnInfo(EntityPropertyMeta propertyMeta, ColumnMeta columnMeta, PersistanceTableInfo table)
{
_propertyMeta = propertyMeta;
_columnMeta = columnMeta;
this.Table = table;
this.DataType = propertyMeta.PropertyType;
this.IsIdentity = columnMeta.IsIdentity;
this.IsPrimaryKey = columnMeta.IsPrimaryKey;
this.Property = propertyMeta.ManagedProperty as IProperty;
}
/// <summary>
/// 通过外键递归查找引用实体的数据并执行数据归档操作。
/// </summary>
/// <param name="forginKeyValue">外键的值。</param>
/// <param name="propertyMetaData">外键属性元数据。</param>
/// <param name="level">表示递归深度。</param>
private void RecursiveQueryReferenceProperties(object forginKeyValue, EntityPropertyMeta propertyMetaData, int level)
{
ReferenceInfo referenceInfo;
if (this._archivingEntity.TryGetValue(propertyMetaData.ReferenceInfo.RefType.FullName, out referenceInfo))
{
var entity = referenceInfo.Repository.GetById(forginKeyValue);
if (entity == null)
{
return;
}
//
// TODO: 存储到历史表里面
//
// this.SaveToHistory(entity);
entity.PersistenceStatus = PersistenceStatus.Deleted;
var newLevel = level + 1;
this.ArchivingReferenceData(entity, propertyMetaData.ReferenceInfo.RefTypeMeta, newLevel);
var key = referenceInfo.Repository.GetType().FullName + "_" + level;
var cacheItem = this._archiveDataCache.FirstOrDefault(c => c.Key == key);
if (cacheItem == null)
{
cacheItem = new ArchivingDataCahceInfo(level, referenceInfo.Repository);
cacheItem.EntityList.Add(entity);
this._archiveDataCache.Add(cacheItem);
}
else
{
cacheItem.EntityList.Add(entity);
}
//this.CacheNeedArchivingData(level, entity);
try
{
// TODO: 删除原始表里面的数据
// referenceInfo.Repository.Save(entity);
}
catch (Exception exception)
{
throw new DataTableMigrationException("删除原始数据失败。", exception);
}
}
}
internal RdbColumnInfo(
string name,
EntityPropertyMeta propertyMeta,
ColumnMeta columnMeta,
RdbTableInfo table,
DbType dbType
)
{
this.Table = table;
this.Name = name;
this.Meta = columnMeta;
this.PropertyType = TypeHelper.IgnoreNullable(propertyMeta.PropertyType);
this.DbType = dbType;
this.Property = propertyMeta.ManagedProperty as IProperty;
}
internal PersistanceColumnInfo(
string name,
EntityPropertyMeta propertyMeta,
ColumnMeta columnMeta,
PersistanceTableInfo table,
DbTypeConverter dbTypeConverter
)
{
this.Table = table;
this.Name = name;
this.Meta = columnMeta;
this.PropertyType = TypeHelper.IgnoreNullable(propertyMeta.PropertyType);
this.DbType = columnMeta.DbType ?? dbTypeConverter.FromClrType(this.PropertyType);
this.Property = propertyMeta.ManagedProperty as IProperty;
}
/// <summary>
/// 找到实体中对应聚合关系中的父实体引用属性元数据。
///
/// 注意，此函数返回的是引用实体属性，而非引用 Id 属性。
/// </summary>
/// <param name="throwOnNotFound"></param>
/// <returns></returns>
public EntityPropertyMeta FindParentPropertyInfo(bool throwOnNotFound = false)
{
if (!this._parentPropertyCacheLoaded)
{
var result = this.EntityMeta.FindParentReferenceProperty();
if (result != null)
{
this._parentPropertyCache = result;
this._parentPropertyCacheLoaded = true;
}
}
if (this._parentPropertyCache == null && throwOnNotFound)
{
throw new NotSupportedException(this.EntityType + " 类型中没有注册引用类型为 ReferenceType.Parent 的父引用属性。");
}
return(this._parentPropertyCache);
}
