Re: [Xdoclet-user] How do I use ejb:value-object?

[Steve Knight]

Title: How do I use ejb:value-object?

This is a re-post of Vincent's explanation from awhile back:     ==============================================   OK You need <valueobject/> subtask AddressBean have @ejb:value-object name="Address" match="*" instantiation="eager" That means that a AddressValue will be created containing all fields of the entity bean "eager" means the VO is build on ejbLoad Customer Bean have  * @ejb:value-object name="CustomerLight" match="light"  * @ejb:value-object name="CustomerNormal" match="normal" instantiation="eager"  * @ejb:value-object name="Customer" match="*" 3 VO will be build.  CustomerValue containing all fields CustomerNormalValue contains only fields that have a corresponding @ejb:value-object match="normal" For example getCredit() Etc... For LightValue You can avoid a field appearing in the VO (for example I XMLized/String Object that are saved in the DB and SAX them on read.  Then my String has no meaning in my VO.  I want the object. Use  @ejb:value-object match="*" exclude="true" (Account.getLastModifiedDate) to avoid a field to be picked up in the VO In the opposite use @ejb:value-object name="..." match="..." on non persistent fields to put it in the VO See Accountean.getTotalAmount The attribute relation="external" on a field say this: because the VO is cached in the bean, sometimes you wan to update some fields because you did not have an setSth() that killed your VO.  For example TotalAmount looks at other Account.  The Acount on wich you get the VO, you must rerun this computation at get time. Aggregation (1-1) AccountBean ---> CustomerBean @ejb:value-object match="*" aggregate="CustomerNormalValue" aggregate-name="OwnerNormalValue" Association (1-1) CustomerBean ---> AddressBean ... For these look at generated code.  The idea is "responsability" of an entity bean over its related relationship For Composition Customer knows he is the master of Address, .... In all these, aggregate/compose is the Java type of the aggregate/compose VO (you could read test.interfaces... In fact) Aggregate-name/compose-name is the name given to the get/set method Aggregation (1-n) CustomerBean ---> AccountBean @ejb:value-object match="*" aggregate="CustomerNormalValue" aggregate-name="OwnerNormalValue" ... Association (1-n) CustomerBean ---> AddressBean @ejb:value-object      *       match="normal"      *       type="Collection"      *       relation="external"      *       compose="test.interfaces.AddressValue"      *           compose-name="ShippingAddressValue"      *       members="test.interfaces.Address"      *           members-name="ShippingAddress" For 1-n I also need the type of what is in the Collection so the members and members-name For 1-n relation="external" should always be used. Finally this has not been tested and was written with CMP 1.1 in mind, so more work will be needed for sure. This covers more than Data Object but I am listening to any improvements that could be added... Vincent     ----- Original Message ----- From: JD Brennan To: '[EMAIL PROTECTED]' Sent: Friday, April 05, 2002 8:01 PM Subject: [Xdoclet-user] How do I use ejb:value-object? Is ejb:value-object working in 1.1.2? I tried:     /**      * @ejb:interface-method      * @ejb:value-object match="normal"      */ in my Bean.java file and    <valueobject/> subtask in the Ant build file, which produces this output: xdoclet: Generating Javadoc Javadoc execution Loading source file /home/brennan/java/cmp2/ejb/DeviceInfoBean.java... Constructing Javadoc information... Running <remoteInterface/>   Generating Remote interface for 'DeviceInfoBean'. Running <localInterface/>   Generating Local interface for 'DeviceInfoBean'. Running <valueobject/> BUILD SUCCESSFUL Looks like it's running the value object stuff, but I don't get the Generating Value Object classes... output which ValueObjectSubTask.java outputs. Thanks for any hints on what I might try next! JD P.S. Is there a way to search the mailing list archive?  I couldn't find one at geocrawler.