[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-2946) @AttributeOverride of column type or name results in PropertyNotFoundException

[Sylvain Charton (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2946?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_30758 ] 

Sylvain Charton commented on HHH-2946:
--------------------------------------

It seems to me that when having a @AttributeOverride annotation on a Map<String,?>, then Hibernate is taking the _properties_ of the key class (String) as index, instead of the object itself. 

Example:
	@CollectionOfElements
	@JoinTable(name="Clf_BinaryPublishingTemplateMapping", joinColumns=@JoinColumn(name = "classifiedId", nullable=false, updatable=false))
	@AttributeOverride(name="element.value", column=@Column(name="BinaryId"))
	@MapKey(columns=@Column(name="PublishingTemplateRef", nullable=false, updatable=false))
	private Map<String, String> binaryPathPublishingTemplateMapping ;

If I remove the @AttributeOverride annotation, then the index property of the collection definition in Hibernate is a single value String (see AbstractCollectionPersister.java:349)
If I set the @AttributeOverride annotation, then the index property of the collection has 4 fields (value, offset, count, hash) which are the properties of the String class. Here Hibernate takes the properties of the String instead of the String itself as key for the Map. 

It looks the same problem described above: Hibernate tries to use the bytes property of the String class, because it found the getBytes() method, which is interpreted as an getter for the property, but without setter, what causes the exception. 

So the problem here is really: @AttributeOverride on an Indexed Collection. 


> @AttributeOverride of column type or name results in PropertyNotFoundException
> ------------------------------------------------------------------------------
>
>                 Key: HHH-2946
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2946
>             Project: Hibernate3
>          Issue Type: Bug
>         Environment: Hibernate 3.2.5.ga, Annotations 3.3.0.ga, Spring 2.0.7, MySQL 5.0.41-community-nt, Windows Vista
>            Reporter: Juan Antonio Agudo
>         Attachments: hibernateErrorTest.zip
>
>
> When trying to map a java.util.Map<String,String> hibernate by default creates VARCHAR(256) fields. When an attempt to alter for e.g. the column type to "TEXT" an Exception is thrown. For example:
> @CollectionOfElements
> @AttributeOverride(name="element.value", column=@Column(columnDefinition="TEXT"))
> public Map<String, String> getSettings() {
>       return settings;
> }
> results in 
> Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in file [C:\Users\tag\workspace\xyz\conf\applicationContext.xml]: Invocation of init method failed; nested exception is org.hibernate.PropertyNotFoundException: Could not find a setter for property bytes in class java.lang.String
> Caused by: org.hibernate.PropertyNotFoundException: Could not find a setter for property bytes in class java.lang.String
>    at org.hibernate.property.BasicPropertyAccessor.createSetter(BasicPropertyAccessor.java:216)
>    at org.hibernate.property.BasicPropertyAccessor.getSetter(BasicPropertyAccessor.java:209)
>    at org.hibernate.mapping.Property.getSetter(Property.java:277)
>    at org.hibernate.tuple.component.PojoComponentTuplizer.buildSetter(PojoComponentTuplizer.java:137)
>    at org.hibernate.tuple.component.AbstractComponentTuplizer.<init>(AbstractComponentTuplizer.java:44)
>    at org.hibernate.tuple.component.PojoComponentTuplizer.<init>(PojoComponentTuplizer.java:38)
>    at org.hibernate.tuple.component.ComponentEntityModeToTuplizerMapping.<init>(ComponentEntityModeToTuplizerMapping.java:52)
>    at org.hibernate.tuple.component.ComponentMetamodel.<init>(ComponentMetamodel.java:50)
>    at org.hibernate.mapping.Component.buildType(Component.java:152)
>    at org.hibernate.mapping.Component.getType(Component.java:145)
>    at org.hibernate.mapping.SimpleValue.isValid(SimpleValue.java:253)
>    at org.hibernate.mapping.Collection.validate(Collection.java:278)
>    at org.hibernate.mapping.IndexedCollection.validate(IndexedCollection.java:67)
>    at org.hibernate.cfg.Configuration.validate(Configuration.java:1106)
>    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1287)
>    at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:915)
> This behaviour can be reproduced and was described fully in http://forum.hibernate.org/viewtopic.php?p=2368889#2368889
> I attached an isolated sample code for review purposes.

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