About Inverse=true and Cascade in Hibernate
Hibernate set mapping inverse and cascade detailed
1, in the end where to use Cascade= "...".
Cascade attribute is not a many-to-many relationship must be used, with it just let us insert or delete to the
1. Where can I use cascade = "..."?
The cascade attribute is not required for many-to-many relationships. With this attribute, we only make it easier to insert or delete the object, as long as we insert or delete the object at the cascade source,
1, exactly where to use cascade= "..."?Cascade property is not a many-to-many relationship must be used, with it just let us in the insertion or deletion of the image is more convenient, as long as the cascade at the source of the insertion or
Cascade-Modifying the Entity tableInverse-Modifying the intermediate tableHttp://www.cnblogs.com/amboyna/archive/2008/02/18/1072260.html1, exactly where to use cascade= "..."?Cascade property is not a many-to-many relationship must be used, with it
1, exactly where to use cascade= "..."?Cascade property is not a many-to-many relationship must be used, with it just let us in the insertion or deletion of the image is more convenient, as long as the cascade at the source of the insertion or
4.01. Associate update
The property corresponding to "link tag" is a pojo or a pojo set. Modifying the value of "link attribute" may update the maintable table or the relationtable table.
This type of update is currently called "associated Update ".
Hibernate collection mappings are often used for both "inverse" and "cascade" properties. For me, hibernate contact is not deep and the language level of all kinds of factors, found that these two properties is difficult to understand, helpless had
C + + in the two-way list, the main implementation (adding and deleting, list inverse, constructors, operator overloading, etc.)The main content of this article1) Introduce the way of the bidirectional linked list in C + +.2) Realization of the data
In the project, nhibing performs ORMapping, which makes database operations very simple, but NHibernate has many features that are not easy to understand. For example, the Inverse function is one of them.
When using nhib.pdf for database operations,
first, create the linked list:The premise of all the algorithms that operate on a linked list is that we first create a linked list, and we can choose to forward and reverse-build the chain:(a), forward to build the chain:First, we have to customize
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