Question

Suppose the table have two fields:

url(varchar), type(smallint).

When the content of url is type of page,the type should be 1,then it should be 0.
That’s to say,

when url like that :

/xxx.html
/xx/xx.action
/xxx.jsp
/xxx.htm
.....

The type should be 1.

When the url like this:

/xx.js
/xx.css
/xx.ico
/xx.jpg
/xx.png
....

type should be 0. It means that this url is not a web page.

And I am using hibernate,I wonder how to mapping this association in the mapping.xml?

Answer 1

Hibernate won’t do that for you. This is business logic and should be coded in a service class, or in the entity itself :

public void setUrl(String url) {
    this.url = url;
    if (url.endsWith(".html")) {
        this.type = 1;
    }
    else if (url.endsWith(".gif")) {
        this.type = 0;
    }
    // ...
}