Package org.hibernate.annotations

Annotation Type Filter

  • @Target({TYPE,METHOD,FIELD})
@Retention(RUNTIME)
@Repeatable(Filters.class)
public @interface Filter
    Specifies that an entity or collection is affected by a named filter declared using @FilterDef, and allows the default filter condition to be overridden for the annotated entity or collection role.

    For example, we might apply a filter named Current to an entity like this: 

     @Entity
 @Filter(name = "Current",
         deduceAliasInjectionPoints = false,
         condition = "{alias}.year = extract(year from current_date)")
 class Course {
     @Id @GeneratedValue Long id;
     int year;
     ...
 }

    If an entity or collection has no @Filter annotation with the name of a given filter, it is not affected by that filter.

    See Also:
    FilterJoinTable, DialectOverride.Filters

    • Required Element Summary

      Required Elements 
      Modifier and Type Required Element Description
      String name
      The name of the filter declared using FilterDef.

    • Optional Element Summary

      Optional Elements 
      Modifier and Type Optional Element Description
      SqlFragmentAlias[] aliases
      Explicitly specifies how aliases are interpolated into the condition() SQL expression.
      String condition
      The filter condition, a SQL expression used for filtering the rows returned by a query when the filter is enabled.
      boolean deduceAliasInjectionPoints
      Determines how tables aliases are interpolated into the condition() SQL expression.

      • condition

        String condition
        The filter condition, a SQL expression used for filtering the rows returned by a query when the filter is enabled. If not specified, the default filter condition given by FilterDef.defaultCondition() is used.

        By default, aliases of filtered tables are automatically interpolated into the filter condition, before any token that looks like a column name. Occasionally, when the interpolation algorithm encounters ambiguity, the process of alias interpolation produces broken SQL. In such cases, alias interpolation may be controlled explicitly using either deduceAliasInjectionPoints() or aliases().

        Default:
        ""

      • deduceAliasInjectionPoints

        boolean deduceAliasInjectionPoints
        Determines how tables aliases are interpolated into the condition() SQL expression.
        • if true, and by default, an alias is added automatically to every column occurring in the SQL expression, but
        • if false, aliases are only interpolated where an explicit placeholder of form {alias} occurs in the SQL expression.
        • Finally, if explicit aliases are specified, then alias interpolation happens only for the specified aliases.
        Default:
        true