Robert, I followed your advices. Your code works
very well. I have successfully inserted all the
values of my bean properties into the database. Thank
you very much.
--- Robert Taylor <[EMAIL PROTECTED]> wrote:
> The same problem exists, you are calling getters on
> a ThreadBean instance
> which has not yet been populated.
>
>
> Below three ways to accomplish your goal:
>
> METHOD 1:
> Try this (proxy):
>
> public final class ThreadHandler {
>
> MessageDAO md = new MySQLMessageDAO();
>
> public int insertThread(ThreadBean bean)
> throws throws MessageDAOSysException,
> ObjectNotFoundException {
>
> int identity = 0;
>
> md.createThread(bean.getReceiver(),
> bean.getSender(),
> bean.getThreadTopic(),
> bean.getThreadBody(),
> bean.getThreadCreationDate(),
> bean.getThreadViewCount(),
> bean.getThreadReplyCount());
>
> // get identity
>
> return identity;
>
> }
>
>
> }
>
> ThreadBean bean = new ThreadBean();
> BeanUtils.copyProperties(bean, postForm);
> ThreadHandler th = new ThreadHandler()
> th.insertThread(bean);
>
> If you do it this way, then it would be better if
> ThreadHandler was a
> singleton,
> but that's a different discussion :)
>
>
>
>
> METHOD 2:
> Another way to do it (design by composition).
>
> public final class ThreadHandler {
>
> MessageDAO md = new MySQLMessageDAO();
> ThreadBean bean;
>
> public ThreadHandler(ThreadBean bean) {
>
> this.bean = bean;
>
> }
> public int insertThread()
> throws throws MessageDAOSysException,
> ObjectNotFoundException {
>
> int identity = 0;
>
> md.createThread(bean.getReceiver(),
> bean.getSender(),
> bean.getThreadTopic(),
> bean.getThreadBody(),
> bean.getThreadCreationDate(),
> bean.getThreadViewCount(),
> bean.getThreadReplyCount());
>
> // get identity
>
> return identity;
>
> }
>
>
> }
>
> ThreadBean bean = new ThreadBean();
> BeanUtils.copyProperties(bean, postForm);
> ThreadHandler th = new ThreadHandler(bean)
> th.insertThread();
>
>
> METHOD 3:
> Yet another way via classic inheritance:
>
> public final class ThreadHandler
> extends ThreadBean {
>
> MessageDAO md = new MySQLMessageDAO();
>
>
> public ThreadHandler() {
>
> super();
>
> }
> public int insertThread()
> throws throws MessageDAOSysException,
> ObjectNotFoundException {
>
> int identity = 0;
>
> md.createThread(this.getReceiver(),
> this.getSender(),
> this.getThreadTopic(),
> this.getThreadBody(),
> this.getThreadCreationDate(),
> this.getThreadViewCount(),
> this.getThreadReplyCount());
>
> // get identity
>
> return identity;
>
> }
>
>
> }
>
> ThreadHandler th = new ThreadHandler();
> BeanUtils.copyProperties(th, postForm);
> th.insertThread();
>
>
>
> hth,
>
> robert
>
>
> > -----Original Message-----
> > From: Caroline Jen [mailto:[EMAIL PROTECTED]
> > Sent: Thursday, January 08, 2004 11:48 AM
> > To: Struts Users Mailing List
> > Subject: RE: All The Bean Properties Are Null in
> the Business Tier!!!
> > (Used BeanUtils to Convert DynaValidatorForm)
> >
> >
> > Thank you for your comment, which is very helpful.
> >
> > Instead of extends ThreadBean, I now import the
> > ThreadBean into my ThreadHandler class (see the
> code
> > below). I am still getting all null or zero values
> > from the bean.
> >
> > What is the proper way to do it? I simply want to
> > insert the value of all the properties into the
> > database. Most of the fields in my database
> require
> > NOT NULL.
> >
> > code:
> > ==================================================
> > import org.apache.artimus.message.ThreadBean;
> >
> > class ThreadHandler
> > {
> > ThreadBean threadBean = new ThreadBean();
> >
> > String receiver = threadBean.getReceiver();
> > String sender = threadBean.getSender();
> > String threadTopic = threadBean.getPostTopic();
> > String threadBody = threadBean.getPostBody();
> > Timestamp threadCreationDate =
> > threadBean.getThreadCreationDate();
> > int threadViewCount =
> > threadBean.getThreadViewCount();
> > int threadReplyCount =
> > threadBean.getThreadReplyCount();
> >
> > MessageDAO md = new MySQLMessageDAO();
> > public int insertThread( ThreadBean threadBean
> )
> > throws
> MessageDAOSysException,
> >
> >
> ObjectNotFoundException
> >
> > {
> > System.out.println( "The sender is " +
> sender +
> > "." );
> > System.out.println( "The subject is " +
> > threadTopic + "." );
> > System.out.println( "The creation date is "
> +
> > threadCreationDate );
> > System.out.println( "The number of replies
> are
=== message truncated ===
__________________________________
Do you Yahoo!?
Yahoo! Hotjobs: Enter the "Signing Bonus" Sweepstakes
http://hotjobs.sweepstakes.yahoo.com/signingbonus
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
