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javax.persistence.criteria.SetJoin

: selection item Since: JPA 2.0 Expression<X> as(Class<X> type) Perform a typecast upon the expression, returning a new expression object. Perform a typecast upon the expression, returning a new
3

javax.persistence.criteria.Subquery

Returns: selection item Since: JPA 2.0 Expression<X> as(Class<X> type) Perform a typecast upon the expression, returning a new expression object. Perform a typecast upon the expression, returning
3

javax.persistence.criteria.CriteriaBuilder.SimpleCase

Returns: selection item Since: JPA 2.0 Expression<X> as(Class<X> type) Perform a typecast upon the expression, returning a new expression object. Perform a typecast upon the expression, returning a new
3

javax.persistence.criteria.CriteriaBuilder.Coalesce

: selection item Since: JPA 2.0 Expression<X> as(Class<X> type) Perform a typecast upon the expression, returning a new expression object. Perform a typecast upon the expression, returning a new expression
3

javax.persistence.criteria.CollectionJoin

. Parameters: name - alias Returns: selection item Since: JPA 2.0 Expression<X> as(Class<X> type) Perform a typecast upon the expression, returning a new expression object. Perform a typecast
3

javax.persistence.criteria.Expression

) Perform a typecast upon the expression, returning a new expression object. Perform a typecast
3

javax.persistence.criteria.CriteriaBuilder.In

> type) Perform a typecast upon the expression, returning a new expression object. Perform a typecast
2

Best practise loading big data

Hello, currently we take some effort to improve the overall performance of our product. ObjectDB is the main data provider within our solution. In the past we often discovered performance problems ... them but we could not see some performance improvement or less memory consumption by doing
2

find(entityClass, primaryKey, lockMode, properties)

is pessimistic and the entity has a version attribute, the persistence provider must perform optimistic version
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as(type)

Method javax.persistence.criteria.Expression Expression<X> as( Class<X> type ) Perform a typecast upon the expression, returning a new expression object. This method does not cause type conversion: the runtime type is not changed. Warning: may result in a runtime failure. Parameters: type

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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