Annotation Type Column

@Retention(CLASS) @Target(FIELD) public @interface Column
Renames or constrains an @Entity field's column. Optional -- when absent, the column name defaults to the field name and the type is inferred from the Java field type (String -> TEXT, int/long -> INTEGER, float/double -> REAL, boolean -> INTEGER, byte[] -> BLOB, java.util.Date -> INTEGER).

  • Optional Element Summary

    Optional Elements
    Modifier and Type
    Optional Element
    Description
    String
    name
    Column name.
    boolean
    nullable
    When false the column gets a NOT NULL constraint at table-create time.
    String
    type
    Optional explicit SQL type.

  • Element Details

    • name

      String name
      Column name. Defaults to the field name when blank.
      Default:
      ""

    • nullable

      boolean nullable
      When false the column gets a NOT NULL constraint at table-create time.
      Default:
      true

    • type

      String type
      Optional explicit SQL type. Use the SQLite type names (TEXT, INTEGER, REAL, BLOB, NUMERIC). When blank the processor infers the type from the field's Java type.
      Default:
      ""