org.apache.sis.xml

## Class MarshalContext

- Object
- - MarshalContext

-     public abstract class MarshalContext
      extends Object

  Context of a marshalling or unmarshalling process.
  Since:
    0.3

  Defined in the `sis-utility` module

- - ### Constructor Summary

    Constructors
    Modifier | Constructor and Description
    --- | ---
    `protected` | `MarshalContext()` Creates a new (un)marshalling context.

  - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `abstract Locale` | `getLocale()` Returns the locale to use for (un)marshalling, or `null` if no locale were explicitly specified.
    `abstract TimeZone` | `getTimeZone()` Returns the timezone to use for (un)marshalling, or `null` if none was explicitely specified.
    `abstract Version` | `getVersion(String prefix)` Returns the schema version of the XML document being (un)marshalled.

    - ### Methods inherited from class Object

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

- - ### Constructor Detail

    - #### MarshalContext

          protected MarshalContext()

      Creates a new (un)marshalling context.

  - ### Method Detail

    - #### getLocale

          public abstract Locale getLocale()

      Returns the locale to use for (un)marshalling, or `null` if no locale were explicitly specified. The locale returned by this method can be used for choosing a language in an `InternationalString`.

      This locale may vary in different fragments of the same XML document. In particular children of `Metadata` inherit the locale specified by the `Metadata​.getLanguage()` attribute.

      Handling of `Locale​.ROOT`
      `Locale​.ROOT` is interpreted as a request for locale-neutral strings. The meaning of "locale-neutral" is implementation specific - this is usually very close to the English locale, but not necessarily. For examples dates are formatted according ISO standard instead than the rules of the English locale.
      Handling of `null` locale
      A `null` value means that the locale is unspecified. Callers are encouraged to use the root locale as the default value, but some flexibility is allowed.
      Returns:
        the locale for the XML fragment being (un)marshalled, or `null` is unspecified.
      See Also:
        `DefaultInternationalString​.toString(Locale)`

    - #### getTimeZone

          public abstract TimeZone getTimeZone()

      Returns the timezone to use for (un)marshalling, or `null` if none was explicitely specified.
      Handling of `null` timezone
      A `null` value means that the timezone is unspecified. Callers are encouraged to use the UTC timezone as the default value, but some flexibility is allowed.
      Upcoming API change — Java time API
      Return type may be changed to `ZoneId` when Apache SIS will target Java 8. This change may be applied in synchronization with GeoAPI 4.0.
      Returns:
        the timezone for the XML fragment being (un)marshalled, or `null` if unspecified.

    - #### getVersion

          public abstract Version getVersion(String prefix)

      Returns the schema version of the XML document being (un)marshalled. The `prefix` argument can be any of the following values (case-sensitive):

      Supported schemas
      Prefix | Standard | Typical values
      --- | --- | ---
      gml | Geographic Markup Language | `3.0`, `3.2`

      Parameters:
        `prefix` - one of the above-cited prefix.
      Returns:
        the version for the given schema, or `null` if unknown.

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