The only exception is when your application has special business rules for data aggregation and ordering that HQL doesn’t support.
当你的应用程序对数据聚合和排序有HQL不支持的特定业务规则时除外。
FOR UPDATE does not support grouping and ordering, so you cannot create a finder that would get a set of rows from the database and order them by a specific column.
FOR UPDATE不支持分组和排序。因此您不能创建finder来实现从数据库获得一组行并通过指定的列来排序的目的。
The provider must ensure integration with back-office systems so that ordering, provisioning, metering, rating and charging, billing and other functions support consumer activities and transactions.
提供者必须确保与后端(back - office)系统集成，以便预订、配给、计量、估价和收费、计费和其他功能支持用户活动和事务。
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