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133

JPA Named Queries

A named query is a statically defined query with a predefined unchangeable query string. Using named queries instead of dynamic queries may improve code organization by separating the JPQL query ... and @NamedQueries Annotations The following @NamedQuery annotation defines a query whose name is "Country.findAll
36

JoinColumn.name

Annotation Element javax.persistence.JoinColumn String name (Optional) The name of the foreign key ... of the following: the name of the referencing relationship property or field of the referencing entity or embeddable class; "_"; the name of the referenced primary key column. If there is no such referencing
36

valueOf(name)

Static Method javax.persistence.PessimisticLockScope PessimisticLockScope valueOf( String name ) Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. Parameters: name - the name of the enum
36

valueOf(name)

Static Method javax.persistence.criteria.JoinType JoinType valueOf( String name ) Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. Parameters: name - the name of the enum constant
36

valueOf(name)

Static Method javax.persistence.CascadeType CascadeType valueOf( String name ) Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. Parameters: name - the name of the enum constant to be returned
36

valueOf(name)

Static Method javax.persistence.InheritanceType InheritanceType valueOf( String name ) Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. Parameters: name - the name of the enum constant
36

valueOf(name)

Static Method javax.persistence.FlushModeType FlushModeType valueOf( String name ) Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. Parameters: name - the name of the enum constant
3

getPersistenceManagerFactory(overrides, name, resourceLoader, pmfLoader)

overrides, String name, ClassLoader resourceLoader, ClassLoader pmfLoader ) Returns a PersistenceManagerFactory configured based on the properties stored in the resource at name, or, if not found, returns a PersistenceManagerFactory with the given name or, if not found, returns a javax.persistence
3

valueOf(name)

Static Method javax.jdo.annotations.IdentityType IdentityType valueOf( String name ) Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. Parameters: name - the name of the enum constant
3

valueOf(name)

Static Method javax.jdo.annotations.IdGeneratorStrategy IdGeneratorStrategy valueOf( String name ) Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. Parameters: name - the name of the enum

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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