[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-4294) Generated SQL includes a column named "null" when referencing a map entry by key and using @LazyCollection(LazyCollectionOption.EXTRA)

Generated SQL includes a column named "null" when referencing a map entry by key and using @LazyCollection(LazyCollectionOption.EXTRA) -------------------------------------------------------------------------------------------------------------------------------------- Key: HHH-4294 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4294 Project: Hibernate Core Issue Type: Bug Components: annotations Environment: Oracle 10g, hibernate 3.2 Reporter: Paul Roe Attachments: Family.zip We have an Product entity with a map of RegionProduct by Region. @MapKey(name="region") @OneToMany(mappedBy="product", targetEntity= RegionProductImpl.class, fetch = FetchType.LAZY) @LazyCollection(LazyCollectionOption.EXTRA) private Map<Region, RegionProduct> regionProducts = new HashMap<Region, RegionProduct>(); When accessing an element of the map by key, the SQL that is generated includes a "null" column in the WHERE condition. where regionprod0_.PROD_ID=? and regionprod0_.null=? resulting in the stack trace org.hibernate.exception.SQLGrammarException: could not collection element by index at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:67) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43) at org.hibernate.loader.Loader.loadEntity(Loader.java:1841) at org.hibernate.loader.entity.CollectionElementLoader.loadElement(CollectionElementLoader.java:72) at org.hibernate.persister.collection.OneToManyPersister.getElementByIndex(OneToManyPersister.java:360) at org.hibernate.collection.AbstractPersistentCollection.readElementByIndex(AbstractPersistentCollection.java:158) at org.hibernate.collection.PersistentMap.get(PersistentMap.java:146) Iterating over the collection works successfully, but populates the entire collection, which is what Extra-Lazy is meant to avoid.