JPA 限定 identifier attribute types

• any Java primitive type
• any primitive wrapper type
• java.lang.String
• java.util.Date (TemporalType#DATE)
• java.sql.Date
• java.math.BigDecimal
• java.math.BigInteger

Assigned identifiers

Generated identifiers

if using generated identifier values (see below) only integer types (short, int, long) will be portably supported.