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javax.persistence.criteria.Join

, PluralJoin, SetJoin A join to an entity, embeddable, or basic type. Since: JPA 2.0 Learn how to use JPA criteria API's Join in Chapter 4 of the ObjectDB/JPA manual. Selection<X> alias(String name ... : selection item Since: JPA 2.0 Expression<X> as(Class<X> type) Perform a typecast upon the expression
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javax.persistence.criteria.ListJoin

collection that has been specified as a java.util.List. Since: JPA 2.0 Selection<X> alias(String name ... : selection item Since: JPA 2.0 Expression<X> as(Class<X> type) Perform a typecast ... expression of the given type Since: JPA 2.0 Fetch<X,Y> fetch(String attributeName) Create a fetch join
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javax.persistence.criteria.SetJoin

collection that has been specified as a java.util.Set. Since: JPA 2.0 Selection<X> alias(String name ... : selection item Since: JPA 2.0 Expression<X> as(Class<X> type) Perform a typecast upon the expression ... expression of the given type Since: JPA 2.0 Fetch<X,Y> fetch(String attributeName) Create a fetch join
16

javax.persistence.criteria.PluralJoin

to all collection types. It is not intended to be used directly in query construction. Since: JPA 2.0 ... . Parameters: name - alias Returns: selection item Since: JPA 2.0 Expression<X> as(Class<X> type ... of the expression Returns: new expression of the given type Since: JPA 2.0 Fetch<X,Y> fetch(String
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javax.persistence.criteria.CollectionJoin

over an association or element collection that has been specified as a java.util.Collection. Since: JPA 2.0 Selection ... . Parameters: name - alias Returns: selection item Since: JPA 2.0 Expression<X> as(Class<X> type) Perform ... of the expression Returns: new expression of the given type Since: JPA 2.0 Fetch<X,Y> fetch(String
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javax.persistence.criteria.Root

always reference entities. Since: JPA 2.0 Learn how to use JPA criteria API's Root in Chapter 4 of the ObjectDB/JPA manual. Selection<X> alias(String name) Assigns an alias to the selection item. Assigns ... selection item. Parameters: name - alias Returns: selection item Since: JPA 2.0 Expression<X> as
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javax.persistence.TypedQuery

the execution of typed queries. Since: JPA 2.0 See Also: Query Parameter Learn how to define and use JPA/JPQL queries in Chapter 4 of the ObjectDB/JPA manual. int executeUpdate() Execute an update or delete ... and the transaction is rolled back Since: JPA 1.0 int getFirstResult() The position of the first result the query
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javax.persistence.criteria.From

belonging to the type. Since: JPA 2.0 Selection<X> alias(String name) Assigns an alias to the selection ... . Returns the same selection item. Parameters: name - alias Returns: selection item Since: JPA 2.0 ... Since: JPA 2.0 Fetch<X,Y> fetch(String attributeName) Create a fetch join to the specified attribute using
15

javax.persistence.criteria.Subquery

to subqueries. A subquery has an expression as its selection item. Since: JPA 2.0 Selection<X> alias(String ... Returns: selection item Since: JPA 2.0 Expression<X> as(Class<X> type) Perform a typecast ... : new expression of the given type Since: JPA 2.0 Root<Y> correlate( Root<Y> parentRoot) Create
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javax.persistence.metamodel.EntityType

<X>, ManagedType<X>, Type<X> Instances of the type EntityType represent entity types. Since: JPA 2.0 ... Since: JPA 2.0 Set< Attribute<?,?>> getAttributes() Return the attributes of the managed type. Return the attributes of the managed type. Returns: attributes of the managed type Since: JPA 2.0 Class<T

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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