RE: [JBoss-user] EJB Entity design question: Can ejbRemove() be used to modify a row in the DB?
Hi, If you are using BMP this is perfectly valid, then in the ejbFindByPrimaryKey you throw an ObjectNotFoundException when the obsolete_indicator column says Y Joost. -Original Message- From: Adam Lipscombe [mailto:[EMAIL PROTECTED]] Sent: Tuesday, September 18, 2001 1:45 PM To: JBoss User Mailing List Subject: [JBoss-user] EJB Entity design question: Can ejbRemove() be used to modify a row in the DB? Folks, I have several entity EJB's that model database tables. Rows in the tables are never physically deleted, but rather they are logically deleted by setting a obsolete_indicator column Y. Can I use ejbRemove() to simply modify the row (setting this flag to Y) or will this break application server caching? Are there any other reasons why I should not use ejbRemove()? Thanks in advance Adam ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
RE: [JBoss-user] EJB Entity design question: Can ejbRemove() be used to modify a row in the DB?
Adam, Even better, if you are using BMP and we are talking about an SQL storage facility, construct your SQL to only fetch rows with the obsolete_indicator column not equal to Y or null. This will reduce the amount of network communication that occurs, especially if you are dealing with wide rows, since the ResultSet will be null if no data is returned. Karl. -Original Message- From: Joost v.d. Wijgerd [SMTP:[EMAIL PROTECTED]] Sent: Wednesday, September 19, 2001 11:21 AM To: [EMAIL PROTECTED] Subject: RE: [JBoss-user] EJB Entity design question: Can ejbRemove() be used to modify a row in the DB? Hi, If you are using BMP this is perfectly valid, then in the ejbFindByPrimaryKey you throw an ObjectNotFoundException when the obsolete_indicator column says Y Joost. -Original Message- From: Adam Lipscombe [mailto:[EMAIL PROTECTED]] Sent: Tuesday, September 18, 2001 1:45 PM To: JBoss User Mailing List Subject: [JBoss-user] EJB Entity design question: Can ejbRemove() be used to modify a row in the DB? Folks, I have several entity EJB's that model database tables. Rows in the tables are never physically deleted, but rather they are logically deleted by setting a obsolete_indicator column Y. Can I use ejbRemove() to simply modify the row (setting this flag to Y) or will this break application server caching? Are there any other reasons why I should not use ejbRemove()? Thanks in advance Adam ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user This e-mail contains privileged attorney-client communications and/or confidential information, and is only for the use by the intended recipient. Receipt by an unintended recipient does not constitute a waiver of any applicable privilege. Reading, disclosure, discussion, dissemination, distribution or copying of this information by anyone other than the intended recipient or his or her employees or agents is strictly prohibited. If you have received this communication in error, please immediately notify us and delete the original material from your computer. Sempra Energy Trading Corp. (SET) is not the same company as SDGE or SoCalGas, the utilities owned by SET's parent company. SET is not regulated by the California Public Utilities Commission and you do not have to buy SET's products and services to continue to receive quality regulated service from the utilities. ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
RE: [JBoss-user] EJB Entity design question: Can ejbRemove() be used to modify a row in the DB?
Thanks guys, its all working now ejbFindByPrimaryKey only retrieves rows that have obsolete_indicator != Y, and ejbRemove() sets obsolete_indicator = Y. Many thanks! -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Karl Koster Sent: 19 September 2001 16:51 To: [EMAIL PROTECTED] Subject: RE: [JBoss-user] EJB Entity design question: Can ejbRemove() be used to modify a row in the DB? Adam, Even better, if you are using BMP and we are talking about an SQL storage facility, construct your SQL to only fetch rows with the obsolete_indicator column not equal to Y or null. This will reduce the amount of network communication that occurs, especially if you are dealing with wide rows, since the ResultSet will be null if no data is returned. Karl. Snip ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
Re: [JBoss-user] EJB Entity design question: Can ejbRemove() be used to modify a row in the DB?
I have several entity EJB's that model database tables. Rows in the tables are never physically deleted, but rather they are logically deleted by setting a obsolete_indicator column Y. Can I use ejbRemove() to simply modify the row (setting this flag to Y) or will this break application server caching? Are there any other reasons why I should not use ejbRemove()? I can't answer this, but I assume you are not using CMP? Otherwise your beans would still be accessible with findByPrimaryKey. Maurice. ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
RE: [JBoss-user] EJB Entity design question: Can ejbRemove() be used to modify a row in the DB?
Yes, The beans use BMP. Sorry I forgot to mention that :-) Adam -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Maurice le Rutte Sent: 18 September 2001 13:28 To: [EMAIL PROTECTED] Subject: Re: [JBoss-user] EJB Entity design question: Can ejbRemove() be used to modify a row in the DB? I have several entity EJB's that model database tables. Rows in the tables are never physically deleted, but rather they are logically deleted by setting a obsolete_indicator column Y. Can I use ejbRemove() to simply modify the row (setting this flag to Y) or will this break application server caching? Are there any other reasons why I should not use ejbRemove()? I can't answer this, but I assume you are not using CMP? Otherwise your beans would still be accessible with findByPrimaryKey. Maurice. ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
