Matt Williams Yes, this thread has been most helpful. Let me see if I understand your message correctly and follow up with a few more questions.
So my basic bean for a Trima Machine would have the five properties, TrimaID, SerialNumber, Version, InServiceDate, OutServiceDate with matching setter and getter methods for each one. The setter methods would only do basic data type validation. Then there would also be a Validate method that would look at the overall data and validate that it is correct, such as OutServiceDate comes after InServiceDate. Then my action page flow would be something like this. Set each form field to appropriate bean property with matching setter method. If no errors are thrown, call Validate method and then either request correction(s) by the user or call the DAO to insert/update the database and move on. My big question is how does this play with object reuse? Five months form now a new developer comes along and creates some new app that for some reason may modify Trima data. They do not realize that they should run the validate method, and go straight from setting the properties to running the DAO and thus inserting bad data into database. Reading the first chapters of a couple of the books suggested in this thread has indocterned me in the concept that on object is supposed to be responsible for its own action and data. It seems somewhat counter to this concept to expect all future users of the TrimaBean object to call a Validate method before running any DAO operations. Am I over complicating things here? -------------- Ian Skinner Web Programmer BloodSource www.BloodSource.org Sacramento, CA --------- | 1 | | --------- Binary Soduko | | | --------- "C code. C code run. Run code run. Please!" - Cynthia Dunning Confidentiality Notice: This message including any attachments is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender and delete any copies of this message. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Message: http://www.houseoffusion.com/lists.cfm/link=i:4:240795 Archives: http://www.houseoffusion.com/cf_lists/threads.cfm/4 Subscription: http://www.houseoffusion.com/lists.cfm/link=s:4 Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=11502.10531.4 Donations & Support: http://www.houseoffusion.com/tiny.cfm/54
