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JPA Doc
101

DiscriminatorType.CHAR

Enum Constant javax.persistence.DiscriminatorType CHAR Single character as the discriminator type. Since: JPA 1.0
Manual
75

Database Schema Evolution

to any numeric type. In this context numeric types are: byte, short, char, int, long, float, double
Manual
75

JPA Persistable Types

: boolean, byte, short, char, int, long, float and double. Equivalent wrapper classes from package
Forum
35

substring works with string but not with char

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 ... Java char is comparable to int but not to String. Maybe an exception has to be thrown on attempt
Result
25

ObjectDB Object Database Features

fields) Primitive types (boolean, byte, short, char, int, long, float, double). Wrapper types (Boolean ... @Id fields or a @EmbeddedId field. Primary Key Data Types Primitives (boolean, byte, short, char
Manual
25

Strings in JPQL and Criteria Queries

to 'germany'. TRIM - Stripping Leading and Trailing Characters The TRIM([[LEADING|TRAILING|BOTH] [char ... ); Expression upper = cb.upper(param); // TRIM([[LEADING|TRAILING|BOTH] [char] FROM] str
Manual
18

Comparison in JPQL and Criteria API

, char, int, long, float, double), wrapper types (Byte, Short, Character, Integer, Long, Float, Double
Manual
18

FROM clause (JPQL / Criteria API)

but cannot be one of the following reserved words: ABS, ALL, AND, ANY, AS, ASC, AVG, BETWEEN, BIT_LENGTH, BOTH, BY, CASE, CHAR
Manual
18

Index Definition

a value of one of the following persistable types: Primitive types: boolean, byte, short, char, int, long
Manual
18

JPA Primary Key

: boolean, byte, short, char, int, long, float, double. Equivalent wrapper classes from package java