1. Hibernate Mapping & POJO Inheritance & Composition coderanch.comHi ranchers, I'm new to hibernate and could do with some advice. I've done lots of reading and have got started....so far so good However, despite reading this excellent link http://www.xylax.net/hibernate/index.html and others, i'm still a little unsure on how to map pojo's that may have inheritance or composition. OK as an example lets imagine database tables: Product(id, other product stuff) ... |
2. Mapping Embeddable+Inheritance POJO forum.hibernate.orgI have a db schema: Table id long PK attr1 String attr2 String .... attrN String TYPE String VAL1 String VAL2 String VAL3 String I need: if TYPE == 'A' then VAL1={same value}, VAL2=null, VAL3=null if TYPE == 'B' then VAL1=null, VAL2={same value}, VAL3=null if TYPE == 'C' then VAL1=null, VAL2=null, VAL3={same value} My pojo structure: Code: @Entity public class Table ... |
3. IllegalArgumentException saving POJO with inheritance forum.hibernate.orgSo I modified my little graph model and now I have, in addition to Parent, Link and Node, two subclasses of Node: DataNode and ExecutableNode. When persisting Parent containing aLink and anExecutableNode and aDataNode, I get the following exception: Code: - IllegalArgumentException in class: ExecutableNode, getter method of property: executions After some debugging I found out that SaveOrUpdateEvent object that is ... |
4. POJO Object Inheritance and Mappings forum.hibernate.orgCan anyone shed some light on why the following isn't working? It might be an POJO object inheritence thing. Code: Object object = new Power(); //this one throws a ClassCastException. ... |