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150

JPA inheritance issue with ObjectDB - Field not found in type error

I'm using ObjectDB as my JPA provider, and I'm facing an issue with inheritance. My classes are as ... retired; // other fields, getters, and setters } @Entity @Inheritance public class PharmaceuticalItem extends Item implements Serializable { // ... } @Entity @Inheritance public class
134

Does ObjectDB support inheritance of @Embeddable classes?

Does ObjectDB support inheritance of one @Embeddable into another @Embeddable ? webel Dr Darren Kelly Yes. ObjectDB supports hierarchy of embeddable classes. support Support
88

javax.persistence.Inheritance

javax.persistence Annotation Inheritance Target: Classes Defines the inheritance strategy ... class hierarchy. If the Inheritance annotation is not specified or if no inheritance type ... @Inheritance(strategy=JOINED) public class Customer { ... } @Entity public class
82

Inheritance.strategy

Annotation Element javax.persistence.Inheritance InheritanceType strategy The strategy to be used for the entity inheritance hierarchy. Default value: javax.persistence.InheritanceType.SINGLE_TABLE Since: JPA 1.0
46

JPA Metamodel API

: // Get all the attributes - including inherited: Set<Attribute> attributes1 = managedType.getAttributes(); // Get all the attributes - excluding inherited: Set<Attribute> attributes2 = managedType.getDeclaredAttributes(); // Get a specific attribute - including inherited: Attribute<MyClass
26

Problem with JOIN and inheritance

)))) The problem is quite easy: The "VendorCustomer" class inherits from the "Customer" class. Now with this query
9

javax.jdo.annotations.Inheritance

javax.jdo.annotations Annotation Inheritance Target: Classes Annotation for the inheritance of the class. Corresponds to the xml element "inheritance" of the "class" and "interface" elements. Since: JDO 2.1 String customStrategy Custom inheritance strategy. Custom inheritance strategy
8

Inheritance.strategy

Annotation Element javax.jdo.annotations.Inheritance InheritanceStrategy strategy Strategy to use for inheritance. Specifies in which table(s) the members for the class are stored. Returns: the inheritance strategy Default value: javax.jdo.annotations.InheritanceStrategy.UNSPECIFIED Since: JDO 2.1
8

Inheritance.customStrategy

Annotation Element javax.jdo.annotations.Inheritance String customStrategy Custom inheritance strategy. If customStrategy is non-empty, then strategy must be UNSPECIFIED. Returns: the custom inheritance strategy Default value: "" Since: JDO 2.1
4

[ODB1] Chapter 8 - ObjectDB Server

> elements), no more than one of them can have a <quota> sub element. User Inheritance User inheritance ... the configuration file before its derived users. One abstract user can inherit from another abstract user ... are inherited except the name attribute. The $user variable (in the path attribute of $standard

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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