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54

join(attribute)

Method javax.persistence.criteria.From Join<X,Y> join( SingularAttribute<?,Y> 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
54

join(attributeName)

Method javax.persistence.criteria.From Join<X,Y> 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
53

join(map)

Method javax.persistence.criteria.From MapJoin<X,K,V> join( MapAttribute<?,K,V> 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
53

join(set)

Method javax.persistence.criteria.From SetJoin<X,Y> join( SetAttribute<?,Y> 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
53

join(list)

Method javax.persistence.criteria.From ListJoin<X,Y> join( ListAttribute<?,Y> 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
53

join(collection)

Method javax.persistence.criteria.From CollectionJoin<X,Y> join( CollectionAttribute<?,Y> 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
5

Joins.value

Annotation Element javax.jdo.annotations.Joins Join[] value The join definitions used for the mapping of this type. Joins for secondary tables are usually defined at the type level and not the field or property level. This allows multiple fields and properties to share the same join definition
5

Join.columns

Annotation Element javax.jdo.annotations.Join Column[] columns Detail definition of the join column(s). This is needed for more than one join column. Returns: the join columns Default value: {} Since: JDO 2.1
5

Join.unique

Annotation Element javax.jdo.annotations.Join String unique Whether the join column is unique. Returns: whether the join column(s) is(are) is unique Default value: "" Since: JDO 2.1
5

Join.outer

Annotation Element javax.jdo.annotations.Join String outer Whether to use an outer join. Returns: whether to use an outer join Default value: "" 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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