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6

Possible issue for JPQL IS EMPTY expression

Possible issue for JPQL IS EMPTY comparison expression: SELECT e FROM MyEntity e WHERE e.collection-valued IS EMPTY throws javax.persistence.PersistenceException: Invalid operand type  for operator IS EMPTY (error 756) Thanks. Note: It doesn' t work with SIZE(): SELECT e FROM MyEntity e WHERE SIZE
Forum
6

TYPE Expression

Hi there! Trying to add a simple type expression with the criteria api like in your sample: cb.equal(e.type(), cb.literal(Country.class)); results in the error: Caused by: com.objectdb.o.UserException: Attempt to store an instance of a non persistable type java.lang.Class at com.objectdb.o.MSG
JPA Doc
6

javax.persistence.criteria.MapJoin

javax.persistence.criteria Interface MapJoin Superinterfaces: Expression, FetchParentExpression as(Class type) Perform a typecast upon the expression, returning a new expression object. Perform a typecast upon the expression, returning a new
JDO Doc
6

javax.jdo.Query

, cast expression, etc.) a type name must be the name of the candidate class, the name of a class or ... of the subquery candidateCollectionExpression - the candidate collection of the subquery as an expression using ... of the expression in the outer query. If the trimmed expression is the empty String
Issue
6

Issue with TYPE expression in Criteria API

Issue with TYPE expression in Criteria API
JPA Doc
6

javax.persistence.criteria.ListJoin

javax.persistence.criteria Interface ListJoin Superinterfaces: Expression, FetchParentExpression as(Class type) Perform a typecast upon the expression, returning a new expression object. Perform a typecast upon the expression, returning a new
JPA Doc
6

javax.persistence.criteria.CriteriaBuilder.Coalesce

javax.persistence.criteria Interface CriteriaBuilder.Coalesce Superinterfaces: Expression, Selection, TupleElement Interface used to build coalesce expressions. A coalesce expression is equivalent to a case expression that returns null if all its arguments evaluate to null
JPA Doc
6

javax.persistence.criteria.Path

javax.persistence.criteria Interface Path Superinterfaces: Expression, Selectionexpression. Since: JPA 2.0 Learn how to use JPA criteria API paths in Chapter 4 of the ObjectDB/JPA ... item. Parameters: name - alias Returns: selection item Since: JPA 2.0 Expression as(Class
JPA Doc
5

javax.persistence.criteria.From

javax.persistence.criteria Interface From Superinterfaces: Expression, FetchParentExpression as(Class type) Perform a typecast upon the expression, returning a new expression object. Perform a typecast upon the expression, returning a new expression object. This method does
JPA Doc
5

javax.persistence.criteria.Join

javax.persistence.criteria Interface Join Superinterfaces: Expression, FetchParentExpression as(Class type) Perform a typecast upon the expression, returning a new expression object. Perform a typecast upon the expression, returning a new