[hibernate-issues] [Hibernate-JIRA] Created: (HHH-7045) Entity as Map Key and hashCode

Entity as Map Key and hashCode ------------------------------ Key: HHH-7045 URL: https://hibernate.onjira.com/browse/HHH-7045 Project: Hibernate ORM Issue Type: Bug Components: entity-manager Affects Versions: 3.6.10, 4.0.1 Environment: Tested 4.0.X, 3.6.X; tested PostgreSQL and Hypersonic Reporter: Robert Hollencamp Attachments: jpa-map-work.zip I have an entity that has a unique field; this is used as the business key. The equals and hashCode methods of the entity class use this field. When this entity is used as the key for a map, this unique field is not loaded when the map entry is inserted; this causes hashCode to return 0 ("return field != null ? field.hashCode() : 0;") and equals to return true, so no matter how many entries there are only one will be inserted. If I prime the cache first by loading all of these key entities, it will then work. The attached test case demonstrates this. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira