Package org.apache.tika.mime

Class MediaTypeRegistry

java.lang.Object
org.apache.tika.mime.MediaTypeRegistry
All Implemented Interfaces:
Serializable
public class MediaTypeRegistry extends Object implements Serializable
Registry of known Internet media types.
See Also:

  • Constructor Details

    • MediaTypeRegistry

      public MediaTypeRegistry()

  • Method Details

    • getDefaultRegistry

      public static MediaTypeRegistry getDefaultRegistry()
      Returns the built-in media type registry included in Tika.
      Returns:
      default media type registry
      Since:
      Apache Tika 0.8

    • getTypes

      public SortedSet<MediaType> getTypes()
      Returns the set of all known canonical media types. Type aliases are not included in the returned set.
      Returns:
      canonical media types
      Since:
      Apache Tika 0.8

    • getAliases

      public SortedSet<MediaType> getAliases(MediaType type)
      Returns the set of known aliases of the given canonical media type.
      Parameters:
      type - canonical media type
      Returns:
      known aliases
      Since:
      Apache Tika 0.8

    • getChildTypes

      public SortedSet<MediaType> getChildTypes(MediaType type)
      Returns the set of known children of the given canonical media type
      Parameters:
      type - canonical media type
      Returns:
      known children
      Since:
      Apache Tika 1.8

    • addType

      public void addType(MediaType type)

    • addAlias

      public void addAlias(MediaType type, MediaType alias)

    • addSuperType

      public void addSuperType(MediaType type, MediaType supertype)

    • normalize

      public MediaType normalize(MediaType type)

    • isSpecializationOf

      public boolean isSpecializationOf(MediaType a, MediaType b)
      Checks whether the given media type a is a specialization of a more generic type b. Both types should be already normalised.
      Parameters:
      a - media type, normalised
      b - suspected supertype, normalised
      Returns:
      true if b is a supertype of a, false otherwise
      Since:
      Apache Tika 0.8

    • isInstanceOf

      public boolean isInstanceOf(MediaType a, MediaType b)
      Checks whether the given media type equals the given base type or is a specialization of it. Both types should be already normalised.
      Parameters:
      a - media type, normalised
      b - base type, normalised
      Returns:
      true if b equals a or is a specialization of it, false otherwise
      Since:
      Apache Tika 1.2

    • isInstanceOf

      public boolean isInstanceOf(String a, MediaType b)
      Parses and normalises the given media type string and checks whether the result equals the given base type or is a specialization of it. The given base type should already be normalised.
      Parameters:
      a - media type
      b - base type, normalised
      Returns:
      true if b equals a or is a specialization of it, false otherwise
      Since:
      Apache Tika 1.2

    • getSupertype

      public MediaType getSupertype(MediaType type)
      Returns the supertype of the given type. If the media type database has an explicit inheritance rule for the type, then that is used. Next, if the given type has any parameters, then the respective base type (parameter-less) is returned. Otherwise built-in heuristics like text/... -> text/plain and .../...+xml -> application/xml are used. Finally application/octet-stream is returned for all types for which no other supertype is known, and the return value for application/octet-stream is null.
      Parameters:
      type - media type
      Returns:
      supertype, or null for application/octet-stream
      Since:
      Apache Tika 0.8