Both iBATIS and Hibernate support a rich object model. You don't have to map foreign key fields in a database to primitive type fields, such as String or Integer, on business objects. You an specify in iBATIS mapping files that these fields are used to create "complex properties" as iBATIS documentation calls it. In other words, you can configure iBATIS or Hibernate load Person objects that have an association to a Company (e.g. myPerson.getCompany().getName()) even though the Person table has a company_id field in the database. The Person class does not have to have a companyId field (e.g. myPerson.getCompanyId()) although you can do that as well if you want to.
_____ From: Daniel Pitts [mailto:[EMAIL PROTECTED] Sent: Monday, April 02, 2007 4:44 PM To: user-java@ibatis.apache.org; Cihat.altuntas Subject: RE: Anemic Domain Model and iBatis This is something I've often thought about in regards to ANY ORM. iBATIS and Hibernate. I've come up with two solutions. One, add behavior to your POJOs, and ask that consumers of your classes don't use the getters/setters which iBATIS uses. Two, Create behavior rich classes which hold/own the data-only POJOs. The data-only POJO's contained are the implementation details of the behavior rich objects. In other words, treat your persisted data as primitives, and wrap them appropriately. There may be a third possibility, but I don't know how well iBATIS (or Hibernate) would handle it... Have the persistence read/write otherwise hidden data, and have the POJOs implement the domain logic normally, without regards to persistence. _____ From: Cihat.altuntas [mailto:[EMAIL PROTECTED] Sent: Monday, April 02, 2007 6:20 AM To: user-java@ibatis.apache.org Subject: Anemic Domain Model and iBatis What do you think about iBatis POJOs and Anemic Domain model that martin fowler describes : http://www.martinfowler.com/bliki/AnemicDomainModel.html iBatis uses POJOs like anemic domain model. Most of the classes only have getter and setter methods. Is this domain model or just DTO or Value Objects? Where do you put your core domain logic ? is iBatis suaitable for Rich Domain models? I want to see your opinions about this subject?
