About char

manual

JPA Persistable Types

Explains how JPA manages types, including entity classes, embeddable classes, primitive types, wrappers, string, date, enum, collections and maps.... Primitive types: boolean , byte , short , char , int , long , float and double . Equivalent ...

 
manual

Database Schema Evolution

Explains how ObjectDB handles automatically schema changes.... context numeric types are: byte , short , char , int , long , float , double , Byte , Short , ...

 
forum_thread

substring works with string but not with char

i want to select all entities whose name starts with a specific letter, i can use this query with a string parameter select f from Foo f where substring(f.name, 1, 1) = ?1 but when i use a char, the query does not return anything. i think it should also be possible to use char/Character types, do you agree? ... , 1 ) = ? 1 but when i use a char, the query does not return anything. i think it should also be possible to use char/Character types, do you agree? ...

 
api-jpa

DiscriminatorType.CHAR

Single character as the discriminator type.(Enum Constant of javax.persistence.DiscriminatorType)

 
api-jdo

getCharField(pc, field, currentValue)

Return the value for the field.(Method of javax.jdo.spi.StateManager)

 
api-jdo

setCharField(pc, field, currentValue, newValue)

Mark the field as modified by the user.(Method of javax.jdo.spi.StateManager)

 
api-jpa

trim(t, x)

Create expression to trim character from both ends of a string.(Method of javax.persistence.criteria.CriteriaBuilder)

 
api-jpa

trim(ts, t, x)

Create expression to trim character from a string.(Method of javax.persistence.criteria.CriteriaBuilder)

 
api-jpa

like(x, pattern, escapeChar)

Create a predicate for testing whether the expression satisfies the given pattern.(Method of javax.persistence.criteria.CriteriaBuilder)

 
api-jpa

notLike(x, pattern, escapeChar)

Create a predicate for testing whether the expression does not satisfy the given pattern.(Method of javax.persistence.criteria.CriteriaBuilder)