Fast Object Database for Java - with JPA/JDO support

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166

Auto Generated Values

Marking a field with the @GeneratedValue annotation specifies that a value will be automatically ... this annotation for non-key numeric persistent fields as well. Several different value generation ... number generator is also used to generate numeric values for primary key fields annotated by
121

JPA Annotations for Value Generation

Automatically generated values are mainly useful for primary key fields, but are supported by ... can also reference a value generator, which is defined at the class level by using one of the following annotations: More details about automatic value generation are provided at the Generated Value section of the ObjectDB Manual.
50

value(value)

Method javax.persistence.criteria.CriteriaBuilder.In In value( T value ) Add to list of values to be tested against. Parameters: value - value Returns: in predicate Since: JPA 2.0
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value(value)

Method javax.persistence.criteria.CriteriaBuilder.Coalesce Coalesce value( T value ) Add an argument to the coalesce expression. Parameters: value - value Returns: coalesce expression Since: JPA 2.0
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value(value)

Method javax.persistence.criteria.CriteriaBuilder.In In value( Expression value ) Add to list of values to be tested against. Parameters: value - expression Returns: in predicate Since: JPA 2.0
50

value(value)

Method javax.persistence.criteria.CriteriaBuilder.Coalesce Coalesce value( Expression value ) Add an argument to the coalesce expression. Parameters: value - expression Returns: coalesce expression Since: JPA 2.0
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javax.jdo.annotations.Value

javax.jdo.annotations Annotation Value Target: Fields (including property get methods) Annotation for the value of a map relation. Corresponds to the xml element "value". Since: JDO 2.1 String column Name of the column to store the value in. Name of the column to store the value in. Returns
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Discriminator.value

Annotation Element javax.jdo.annotations.Discriminator String value The value for the discriminator for objects of this class when using "value-map" strategy. Returns: The value for the discriminator for objects of this class when using "value-map" strategy Default value: "" Since: JDO 2.1
36

setParameter(param, value)

Method javax.persistence.Query Query setParameter( Parameter param, T value ) Bind the value of a Parameter object. Parameters: param - parameter object value - parameter value Returns: the same query instance Throws: IllegalArgumentException - if the parameter does not correspond to a parameter of the query Since: JPA 2.0
36

Value.deleteAction

Annotation Element javax.jdo.annotations.Value ForeignKeyAction deleteAction Delete action to apply to any foreign key for the value. Returns: delete action to apply to any foreign key for the value Default value: javax.jdo.annotations.ForeignKeyAction.UNSPECIFIED Since: JDO 2.1

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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