Fast Object Database for Java - with JPA/JDO support

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45

javax.persistence.criteria.Root

> fetch(String attributeName) Create a fetch join to the specified attribute using an inner join. Create a fetch join to the specified attribute using an inner join. Parameters: attributeName - name ... attribute using an inner join. Create a fetch join to the specified collection-valued attribute
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join(attribute)

Method javax.persistence.criteria.From Join join( SingularAttribute attribute ) Create an inner join to the specified single-valued attribute. Parameters: attribute - target of the join Returns: the resulting join Since: JPA 2.0
43

join(attributeName)

Method javax.persistence.criteria.From Join join( String attributeName ) Create an inner join to the specified attribute. Parameters: attributeName - name of the attribute for the target of the join Returns: the resulting join Throws: IllegalArgumentException - if attribute of the given name does not exist Since: JPA 2.0
43

join(collection)

Method javax.persistence.criteria.From CollectionJoin join( CollectionAttribute collection ) Create an inner join to the specified Collection-valued attribute. Parameters: collection - target of the join Returns: the resulting join Since: JPA 2.0
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join(list)

Method javax.persistence.criteria.From ListJoin join( ListAttribute list ) Create an inner join to the specified List-valued attribute. Parameters: list - target of the join Returns: the resulting join Since: JPA 2.0
43

join(map)

Method javax.persistence.criteria.From MapJoin join( MapAttribute map ) Create an inner join to the specified Map-valued attribute. Parameters: map - target of the join Returns: the resulting join Since: JPA 2.0
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join(set)

Method javax.persistence.criteria.From SetJoin join( SetAttribute set ) Create an inner join to the specified Set-valued attribute. Parameters: set - target of the join Returns: the resulting join Since: JPA 2.0
27

ObjectDB Object Database Features

(first, max) - for paging. Query Structure SELECT (including NEW). FROM (including INNER JOIN, LEFT ... (extremely fast JOIN queries). Map keys and values are indexable. Nested paths inside embedded objects ... Automatic pre-loading optimizations. Configurable JPA eager/lazy fetch and JPA query FETCH JOIN
23

javax.persistence.criteria.Fetch

a fetch join to the specified attribute using an inner join. Create a fetch join to the specified attribute using an inner join. Parameters: attributeName - name of the attribute for the target ... > attribute) Create a fetch join to the specified collection-valued attribute using an inner join. Create
23

javax.jdo.annotations.Join

javax.jdo.annotations Annotation Join Target: Classes and fields (including property get methods) Annotation for the join of a relation. Corresponds to the xml element "join". Since: JDO 2.1 String column Name of the column in the join table. Name of the column in the join table. Returns: the name

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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