Package org.hibernate

Class Length

java.lang.Object
org.hibernate.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.

Since:
6.0
See Also:

  • Field Summary

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

  • Method Summary

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Field Details

    • DEFAULT

      public static final int DEFAULT
      The default length for a column in JPA.
      See Also:

    • 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).

      For example, @Column(length=LONG) results in the column type:

      varchar(32600)on h2, Db2, and PostgreSQL
      texton MySQL
      clobon Oracle
      varchar(max)on SQL Server
      See Also:

    • 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 accommodate values of maximum length 32767.

      For example, @Column(length=LONG16) results in the column type:

      varchar(32767)on h2 and PostgreSQL
      texton MySQL
      clobon Oracle and Db2
      varchar(max)on SQL Server
      See Also:

    • LONG32

      public static final int LONG32
      The maximum length of a Java string or array, that is, the maximum length that fits in 32 bits. Used to select a variable-length SQL type large enough to accommodate any Java string up to the maximum possible length 2147483647.

      This is also the default length for a column declared using @JdbcTypeCode(SqlTypes.LONG32VARCHAR) or @JdbcTypeCode(SqlTypes.LONG32VARBINARY).

      For example, @Column(length=LONG32) results in the column type:

      texton PostgreSQL
      longtexton MySQL
      clobon h2, Oracle, and Db2
      varchar(max)on SQL Server
      See Also:

    • LOB_DEFAULT

      public static final int LOB_DEFAULT
      The default length for a LOB column, on databases where LOB columns have a length.
      See Also: