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Obtaining a JPA Database Connection

to get an EntityManager instance. JPA requires the definition of a persistence unit in an XML file in order ... persistence unit in an XML file or you can simply provide the file path of the ObjectDB database ... is considered by ObjectDB to be a database URL rather than a persistence unit name. The $objectdb
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javax.persistence.ValidationMode

javax.persistence Enum ValidationMode java.lang.Object java.lang.Enum<javax.persistence.ValidationMode> javax.persistence.ValidationMode Implemented Interfaces: Serializable, Comparable<ValidationMode> The validation mode to be used by the provider for the persistence unit. Since: JPA
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javax.persistence.NamedQuery

javax.persistence Annotation NamedQuery Target: Classes Specifies a static, named query in the Java Persistence query language. Query names are scoped to the persistence unit. The NamedQuery ... of a named query in the Java Persistence query language: @NamedQuery( name
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javax.persistence.NamedQueries

javax.persistence Annotation NamedQueries Target: Classes Specifies multiple named Java Persistence query language queries. Query names are scoped to the persistence unit. The NamedQueries annotation can be applied to an entity or mapped superclass. Since: JPA 1.0 See Also: NamedQuery Learn
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javax.persistence.metamodel.Metamodel

javax.persistence.metamodel Interface Metamodel Provides access to the metamodel of persistent entities in the persistence unit. Since: JPA 2.0 EmbeddableType<X> embeddable(Class<X> cls) Return the metamodel embeddable type representing the embeddable class. Return the metamodel embeddable type
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javax.persistence.TableGenerator

javax.persistence Annotation TableGenerator Target: Classes and fields (including property ... on the primary key field or property. The scope of the generator name is global to the persistence unit (across all generator types). Example 1: @Entity public class Employee
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javax.persistence.SequenceGenerator

to the persistence unit (across all generator types). Example: @SequenceGenerator(name="EMP_SEQ ... javax.persistence Annotation SequenceGenerator Target: Classes and fields (including property get methods) Defines a primary key generator that may be referenced by name when a generator element
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javax.persistence.NamedNativeQueries

javax.persistence Annotation NamedNativeQueries Target: Classes Used to specify multiple native SQL named queries. Query names are scoped to the persistence unit. The NamedNativeQueries annotation can be applied to an entity or mapped superclass. Since: JPA 1.0 See Also: NamedNativeQuery
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javax.persistence.NamedNativeQuery

javax.persistence Annotation NamedNativeQuery Target: Classes Specifies a named native SQL query. Query names are scoped to the persistence unit. The NamedNativeQuery annotation can be applied to an entity or mapped superclass. Since: JPA 1.0 QueryHint[] hints Query properties and hints. Query
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Privacy Policy

"Our" in this Agreement) refers to ObjectDB Software Ltd, 109 Vernon House Friar Lane Unit 632 Nottingham NG1 6DQ United Kingdom. Cookies are small files that are placed on Your computer, mobile device or ... system and server integrity). Cookies can be "Persistent" or "Session" Cookies. Persistent Cookies remain

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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