Package org.hibernate

Class Length


  • public final class Length
    extends Object
    Defines a list of useful constant values that may be used to specify long column lengths in the JPA Column annotation.

    For example, @Column(length=LONG16) would specify that Hibernate should generate DDL with a column type capable of holding strings with 16-bit lengths.

    See Also:
    Column.length()
    • Field Summary

      Fields 
      Modifier and Type Field Description
      static int DEFAULT
      The default length for a column in JPA.
      static int LOB_DEFAULT
      The default length for a LOB column.
      static int LONG
      Used to select a variable-length SQL type large enough to contain values of maximum length 32600.
      static int LONG16
      The maximum length that fits in 16 bits.
      static int LONG32
      The maximum length of a Java string, that is, the maximum length that fits in 32 bits.
    • Field Detail

      • LONG

        public static final int LONG
        Used to select a variable-length SQL type large enough to contain values of maximum length 32600. This arbitrary-looking number was chosen because some databases support variable-length types right up to a limit that is just slightly below 32767. (For some, the limit is 32672 characters.)

        This is also the default length for a column declared using @JdbcTypeCode(Types.LONGVARCHAR) or @JdbcTypeCode(Types.LONGVARBINARY).

        See Also:
        JavaType.getLongSqlLength(), Constant Field Values
      • LONG16

        public static final int LONG16
        The maximum length that fits in 16 bits. Used to select a variable-length SQL type large enough to contain values of maximum length 32767.
        See Also:
        Constant Field Values
      • LONG32

        public static final int LONG32
        The maximum length of a Java string, that is, the maximum length that fits in 32 bits. Used to select a variable-length SQL type large enough to contain any Java string.
        See Also:
        Constant Field Values