一个支持泛型的DAO接口类详解编程语言

* @param entity The entity to persist. * @throws When the quota of instances for that entity was exceeded. void makePersistent(T entity) throws QuotaExceededException; /** * Makes the given entity transient. * @param entity The entity to make transient. void makeTransient(T entity); /** * @return the number of matching entities. int count(Filter filter); /** * Returns a single entity which has the given ID or throws an * code EntityNotFoundException /code if no matching entity is found. * @param id * The ID of the entity to return. * @return The entity. T findById(ID id) throws EntityNotFoundException; /** * Returns all matching entities of type code T /code . * @param filter * The code Filter /code to use. * @return An ordered code List /code with the entities. List T find(Filter filter); /** * Returns all entities of type code T /code . * @return An ordered code List /code with the entities. List T findAll(); /** * Returns a page of entities. * @param filter * The code Filter /code to use. * @param startRow * The offset. * @param pageSize * The number of entities to return. * @return A code Pair /code of values. The first value is the * code List /code of entities and the second one if the total * number of existing entities. Pair List T , Integer findPaged(Filter filter, int startRow, int pageSize); /** * Flushing is the process of synchronising the underlying persistent * store with persistable state held in memory. void flush();

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