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jsalvo
 Post subject: Artifact generation not generating toString(), hashCode(), e
PostPosted: Tue Nov 08, 2005 10:28 pm 
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Joined: Mon Nov 07, 2005 11:10 pm
Posts: 30
HibernatTools 3.1.0 beta1
Eclipse 3.1
JDK 1.4

The artifact generation from the Eclipse plugin is not generating the toString(), hashCode(), and equals() method.
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jsalvo
 Post subject:
PostPosted: Wed Nov 09, 2005 1:29 am 
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Joined: Mon Nov 07, 2005 11:10 pm
Posts: 30
Not sure if this is related, but it looks like it is. Hibernet-tools (3.1-beta1 ) seems to be calling Property.isNaturalIdentifier(), which does not exist anymore in hibernate3.jar

I get the following if I try to run hbm2java from the hibernate-tools in eclipse myself:

BUILD FAILED
/home/jsalvo/workspace/softgame-latest/build-hibernate.xml:23: org.hibernate.tool.hbm2x.ExporterException: MethodInvocationException while processing template Pojo. Invocation of method 'get' in class org.hibernate.tool.hbm2x.TemplateHelper$Templates threw exception class org.hibernate.tool.hbm2x.ExporterException : MethodInvocationException while processing template pojo/PojoEqualsHashcode.vm. Invocation of method 'needsEqualsHashCode' in class org.hibernate.tool.hbm2x.pojo.EntityPOJOClass threw exception class java.lang.NoSuchMethodError : org.hibernate.mapping.Property.isNaturalIdentifier()Z


Buildfile: /home/jsalvo/workspace/softgame-latest/build-hibernate.xml
[hibernatetool] Executing Hibernate Tool with a Standard Configuration
[hibernatetool] 1. task: hbm2java (Generates a set of .java files)
[hibernatetool] 9/11/2005 16:24:34 org.hibernate.cfg.Environment <clinit>
[hibernatetool] INFO: Hibernate 3.0.5
[hibernatetool] 9/11/2005 16:24:34 org.hibernate.cfg.Environment <clinit>
[hibernatetool] INFO: hibernate.properties not found
[hibernatetool] 9/11/2005 16:24:34 org.hibernate.cfg.Environment <clinit>
[hibernatetool] INFO: using CGLIB reflection optimizer
[hibernatetool] 9/11/2005 16:24:34 org.hibernate.cfg.Environment <clinit>
[hibernatetool] INFO: using JDK 1.4 java.sql.Timestamp handling
[hibernatetool] 9/11/2005 16:24:35 org.hibernate.cfg.Configuration configure
[hibernatetool] INFO: configuring from file: hibernate-test.cfg.xml
[hibernatetool] 9/11/2005 16:24:35 org.hibernate.cfg.Configuration doConfigure
[hibernatetool] INFO: Configured SessionFactory: Hibernate-SybaseTest
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.Configuration addFile
[hibernatetool] INFO: Mapping file: /home/jsalvo/workspace/softgame-latest/development/src/com/mig/provisioning/db/hibernate/Campaign.hbm.xml
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues
[hibernatetool] INFO: Mapping class: com.mig.provisioning.db.hibernate.Campaign -> campaign
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.Configuration addFile
[hibernatetool] INFO: Mapping file: /home/jsalvo/workspace/softgame-latest/development/src/com/mig/provisioning/db/hibernate/CampaignTemplate.hbm.xml
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues
[hibernatetool] INFO: Mapping class: com.mig.provisioning.db.hibernate.CampaignTemplate -> campaign_template
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.Configuration addFile
[hibernatetool] INFO: Mapping file: /home/jsalvo/workspace/softgame-latest/development/src/com/mig/provisioning/db/hibernate/Carrier.hbm.xml
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues
[hibernatetool] INFO: Mapping class: com.mig.provisioning.db.hibernate.Carrier -> carrier
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.Configuration addFile
[hibernatetool] INFO: Mapping file: /home/jsalvo/workspace/softgame-latest/development/src/com/mig/provisioning/db/hibernate/CarrierNumber.hbm.xml
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues
[hibernatetool] INFO: Mapping class: com.mig.provisioning.db.hibernate.CarrierNumber -> carrier_number
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.Configuration addFile
[hibernatetool] INFO: Mapping file: /home/jsalvo/workspace/softgame-latest/development/src/com/mig/provisioning/db/hibernate/Client.hbm.xml
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues
[hibernatetool] INFO: Mapping class: com.mig.provisioning.db.hibernate.Client -> client
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.Configuration addFile
[hibernatetool] INFO: Mapping file: /home/jsalvo/workspace/softgame-latest/development/src/com/mig/provisioning/db/hibernate/NumberRegister.hbm.xml
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues
[hibernatetool] INFO: Mapping class: com.mig.provisioning.db.hibernate.NumberRegister -> number_register
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.Configuration addFile
[hibernatetool] INFO: Mapping file: /home/jsalvo/workspace/softgame-latest/development/src/com/mig/provisioning/db/hibernate/ProvisioningRequest.hbm.xml
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues
[hibernatetool] INFO: Mapping class: com.mig.provisioning.db.hibernate.ProvisioningRequest -> provisioning_request
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.Configuration addFile
[hibernatetool] INFO: Mapping file: /home/jsalvo/workspace/softgame-latest/development/src/com/mig/provisioning/db/hibernate/ProvisioningRequestHistory.hbm.xml
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues
[hibernatetool] INFO: Mapping class: com.mig.provisioning.db.hibernate.ProvisioningRequestHistory -> provisioning_request_history
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.Configuration addFile
[hibernatetool] INFO: Mapping file: /home/jsalvo/workspace/softgame-latest/development/src/com/mig/provisioning/db/hibernate/ProvisioningRequestTemplate.hbm.xml
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues
[hibernatetool] INFO: Mapping class: com.mig.provisioning.db.hibernate.ProvisioningRequestTemplate -> provisioning_request_template
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.Configuration addFile
[hibernatetool] INFO: Mapping file: /home/jsalvo/workspace/softgame-latest/development/src/com/mig/provisioning/db/hibernate/ProvisioningUser.hbm.xml
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues
[hibernatetool] INFO: Mapping class: com.mig.provisioning.db.hibernate.ProvisioningUser -> provisioning_user
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.Configuration secondPassCompile
[hibernatetool] INFO: processing extends queue
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.Configuration secondPassCompile
[hibernatetool] INFO: processing collection mappings
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.HbmBinder bindCollectionSecondPass
[hibernatetool] INFO: Mapping collection: com.mig.provisioning.db.hibernate.Campaign.campaignTemplates -> campaign_template
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.HbmBinder bindCollectionSecondPass
[hibernatetool] INFO: Mapping collection: com.mig.provisioning.db.hibernate.Campaign.provisioningRequests -> provisioning_request
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.HbmBinder bindCollectionSecondPass
[hibernatetool] INFO: Mapping collection: com.mig.provisioning.db.hibernate.Carrier.carrierNumbers -> carrier_number
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.HbmBinder bindCollectionSecondPass
[hibernatetool] INFO: Mapping collection: com.mig.provisioning.db.hibernate.CarrierNumber.provisioningRequests -> provisioning_request
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.HbmBinder bindCollectionSecondPass
[hibernatetool] INFO: Mapping collection: com.mig.provisioning.db.hibernate.Client.campaigns -> campaign
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.HbmBinder bindCollectionSecondPass
[hibernatetool] INFO: Mapping collection: com.mig.provisioning.db.hibernate.NumberRegister.carrierNumbers -> carrier_number
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.HbmBinder bindCollectionSecondPass
[hibernatetool] INFO: Mapping collection: com.mig.provisioning.db.hibernate.NumberRegister.campaigns -> campaign
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.HbmBinder bindCollectionSecondPass
[hibernatetool] INFO: Mapping collection: com.mig.provisioning.db.hibernate.ProvisioningRequest.provisioningRequestTemplates -> provisioning_request_template
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.HbmBinder bindCollectionSecondPass
[hibernatetool] INFO: Mapping collection: com.mig.provisioning.db.hibernate.ProvisioningRequest.provisioningRequestHistories -> provisioning_request_history
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.HbmBinder bindCollectionSecondPass
[hibernatetool] INFO: Mapping collection: com.mig.provisioning.db.hibernate.ProvisioningUser.provisioningRequestHistories -> provisioning_request_history
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.Configuration secondPassCompile
[hibernatetool] INFO: processing association property references
[hibernatetool] 9/11/2005 16:24:36 org.hibernate.cfg.Configuration secondPassCompile
[hibernatetool] INFO: processing foreign key constraints
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: **************************************************************
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: Starting Jakarta Velocity v1.4
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: RuntimeInstance initializing.
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: Default Properties File: org/apache/velocity/runtime/defaults/velocity.properties
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: Trying to use logger class org.apache.velocity.tools.generic.log.CommonsLogLogSystem
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: Using logger class org.apache.velocity.tools.generic.log.CommonsLogLogSystem
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: Default ResourceManager initializing. (class org.apache.velocity.runtime.resource.ResourceManagerImpl)
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: Resource Loader Instantiated: org.apache.velocity.runtime.resource.loader.FileResourceLoader
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: FileResourceLoader : initialization starting.
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: FileResourceLoader : adding path '.'
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: FileResourceLoader : initialization complete.
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: Resource Loader Instantiated: org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: ClasspathResourceLoader : initialization starting.
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: ClasspathResourceLoader : initialization complete.
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: ResourceCache : initialized. (class org.apache.velocity.runtime.resource.ResourceCacheImpl)
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: Default ResourceManager initialization complete.
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: Loaded System Directive: org.apache.velocity.runtime.directive.Literal
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: Loaded System Directive: org.apache.velocity.runtime.directive.Macro
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: Loaded System Directive: org.apache.velocity.runtime.directive.Parse
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: Loaded System Directive: org.apache.velocity.runtime.directive.Include
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: Loaded System Directive: org.apache.velocity.runtime.directive.Foreach
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: Created: 20 parsers.
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: Velocimacro : initialization starting.
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: Velocimacro : allowInline = true : VMs can be defined inline in templates
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: Velocimacro : allowInlineToOverride = false : VMs defined inline may NOT replace previous VM definitions
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: Velocimacro : allowInlineLocal = false : VMs defined inline will be global in scope if allowed.
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: Velocimacro : messages on : VM system will output logging messages
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: Velocimacro : autoload off : VM system will not automatically reload global library macros
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: Velocimacro : initialization complete.
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: Velocity successfully started.
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: ResourceManager : found pojo/Pojo.vm with loader org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: ResourceManager : found pojo/PojoTypeDeclaration.vm with loader org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: ResourceManager : found pojo/Ejb3TypeDeclaration.vm with loader org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: ResourceManager : found pojo/PojoFields.vm with loader org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: ResourceManager : found pojo/PojoConstructors.vm with loader org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: ResourceManager : found pojo/PojoPropertyAccessors.vm with loader org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: ResourceManager : found pojo/Ejb3PropertyGetAnnotation.vm with loader org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: ResourceManager : found pojo/Ejb3PropertyGetAnnotation.vm with loader org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: ResourceManager : found pojo/Ejb3PropertyGetAnnotation.vm with loader org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: ResourceManager : found pojo/Ejb3PropertyGetAnnotation.vm with loader org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: ResourceManager : found pojo/PojoToString.vm with loader org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] INFO: ResourceManager : found pojo/PojoEqualsHashcode.vm with loader org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] SEVERE: Method needsEqualsHashCode threw exception for reference $pojo in template pojo/PojoEqualsHashcode.vm at [1,5]
[hibernatetool] 9/11/2005 16:24:37 org.apache.velocity.tools.generic.log.CommonsLogLogSystem logVelocityMessage
[hibernatetool] SEVERE: Method get threw exception for reference $templates in template pojo/Pojo.vm at [17,1]
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jsalvo
 Post subject:
PostPosted: Wed Nov 09, 2005 1:57 am 
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Joined: Mon Nov 07, 2005 11:10 pm
Posts: 30
Okay .. The solution to the exception was to use hibernate3.jar from hibernate-3.1-rc2.

However, still no equals(), hashCode(), and toString() methods.
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jsalvo
 Post subject: Is hashCode() and equals() required for hibernate 2.1.8 ??
PostPosted: Wed Nov 09, 2005 3:14 am 
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Joined: Mon Nov 07, 2005 11:10 pm
Posts: 30
I went back to Hibernate 2.1.8, and simply ran ant from the command line to generate Java from hbm.xml files. Now I have the toString() method.

But still no hashCode() and equals() method.

Then I noticed in the ChangeLogs:

Changes in version 3.0 beta 1 (21.12.2004)
------------------------------------------
* Hibernate now much more robust if user does not implement equals()/hashCode() on id and unique key classes

Changes in version 3.0 beta 3 (30.1.2005)
------------------------------------------
* it is no longer truly necessary for composite identifier classes to implement equals()/hashCode() (but still recommended)


However, these are with Hibernate 3.0.
Are these statements also true for 2.1.8 ??
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pmularien
 Post subject:
PostPosted: Wed Nov 09, 2005 8:18 am 
Senior
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Joined: Mon Apr 04, 2005 8:04 am
Posts: 128
Location: Manchester, NH USA
In Hibernate Tools 2.x you can include several meta tags to control the creation of equals/hashCode, and the contents of those methods. It is documented in section 15.2.2 of the Hibernate 2.x manual:

http://www.hibernate.org/hib_docs/reference/en/html/toolsetguide.html#toolsetguide-s2-2

I have not tried the same meta tags in tools 3.x, but there is code to handle them. It looks (from code) like 3.x is smarter and has dropped the implement-equals meta tag, and instead will automatically implement equals/hashcode if any use-in-equals meta tags exist on a class's properties.

Hope that helps?
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pmularien
 Post subject:
PostPosted: Wed Nov 09, 2005 8:20 am 
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Posts: 128
Location: Manchester, NH USA
I didn't mention it, but there is also the use-in-tostring meta tag that is also still handled in 3.x tools.
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max
 Post subject:
PostPosted: Wed Nov 09, 2005 11:10 am 
Hibernate Team
Hibernate Team

Joined: Tue Aug 26, 2003 6:10 am
Posts: 8615
Location: Neuchatel, Switzerland (Danish)
yes, put the meta tags in there and you will get equals,hashcode etc as you want them.

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jsalvo
 Post subject:
PostPosted: Wed Nov 09, 2005 7:26 pm 
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Joined: Mon Nov 07, 2005 11:10 pm
Posts: 30
Thanks for all of that. My confusion was that the O'Reilly book I was reading shows that hbm2java was supposed to generate hashCode() and equals() automatically. So I was wondering why it was not generated for me.

Anyway, I found this in the release notes for 2.x:

Changes in version 2.1.1
------------------------

* added support for generating empty concrete class for a Base class.
* added support for <parent> in <composite-element>
* added meta class-code, extra-import attributes
* hbm2java no longer generates automatically an equals()/hashcode() set unless the class has a composite id or the class is a composite.
- use meta implement-equals attribute to enable generating equals()/hashcode() + mark relevant properties with meta use-in-equals attribute.
* added meta use-in-equals attribute.


So I presume hashCode() and equals() is really ONLY NEEDED for composite ids ? ... even in Hibernate 2.x ?

Basically, do I still need to or not ?
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max
 Post subject:
PostPosted: Thu Nov 10, 2005 1:59 am 
Hibernate Team
Hibernate Team

Joined: Tue Aug 26, 2003 6:10 am
Posts: 8615
Location: Neuchatel, Switzerland (Danish)
no, equals and hashcode is equally important but it was realized that generating them automatically without user definition were unsafe. See http://www.hibernate.org/109.html.

Note, we do now support an automatic generation when you have a <natural-id> but we dont reverse engineer that (yet)

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