public final Class Length

The default length for a column in JPA.

See Also

jakarta.persistence.Column#length(), org.hibernate.type.descriptor.java.JavaType#getDefaultSqlLength

The default length for a LOB column, on databases where LOB columns have a length.

See Also

org.hibernate.dialect.Dialect#getDefaultLobLength, org.hibernate.type.SqlTypes#CLOB, org.hibernate.type.SqlTypes#BLOB

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:

See Also

org.hibernate.type.descriptor.java.JavaType#getLongSqlLength, org.hibernate.type.SqlTypes#LONGVARCHAR, org.hibernate.type.SqlTypes#LONGVARBINARY

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:

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:

See Also

org.hibernate.type.SqlTypes#LONG32VARCHAR, org.hibernate.type.SqlTypes#LONG32VARBINARY