Package com.complexible.common.rdf.rio

Class LowercaseBCP47LanguageHandler

  • All Implemented Interfaces:
    LanguageHandler
    public final class LowercaseBCP47LanguageHandler
extends java.lang.Object
implements LanguageHandler
    Author:
    Evren Sirin

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean isRecognizedLanguage​(java.lang.String theLang)
      Checks if the given language tag is recognized by this language handler, including cases where the language tag is recognized, but is not yet normalized.
      java.lang.String key()
      A unique key for this language handler
      Literal normalizeLanguage​(java.lang.String theValue, java.lang.String theLang)
      Normalize both the language tag and the language if appropriate.
      java.lang.String normalizeLanguageTag​(java.lang.String theLang)
      Normalize the language tag.
      boolean verifyLanguage​(java.lang.String theValue, java.lang.String theLang)
      Verifies that the language tag is valid, optionally including an automated check on the literal value.

      • Methods inherited from class java.lang.Object

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

    • Method Detail

      • verifyLanguage

        public boolean verifyLanguage​(@Nonnull
                              java.lang.String theValue,
                              @Nonnull
                              java.lang.String theLang)
                       throws InvalidLiteral
        Verifies that the language tag is valid, optionally including an automated check on the literal value.

        This method must only be called after verifying that LanguageHandler.isRecognizedLanguage(String) returns true for the given language tag.

        Specified by:
        verifyLanguage in interface LanguageHandler
        Parameters:
        theValue - Literal value matching the given language tag.
        theLang - A language tag that matched with LanguageHandler.isRecognizedLanguage(String).
        Returns:
        `true` if the language tag is recognized by this language handler, and it is verified to be syntactically valid.
        Throws:
        InvalidLiteral - If the language tag was not recognized.

      • normalizeLanguage

        @Nonnull
public Literal normalizeLanguage​(@Nonnull
                                 java.lang.String theValue,
                                 @Nonnull
                                 java.lang.String theLang)
                          throws InvalidLiteral
        Normalize both the language tag and the language if appropriate.

        This method must only be called after verifying that LanguageHandler.isRecognizedLanguage(String) returns true for the given language tag, and LanguageHandler.verifyLanguage(String, String) also returns true for the given language and literal value.

        Specified by:
        normalizeLanguage in interface LanguageHandler
        Parameters:
        theValue - Required literal value to use in the normalization process and to provide the value for the resulting literal.
        theLang - The language tag which is to be normalized. This tag is available in normalized form from the result using Literal.lang().
        Returns:
        A Literal containing the normalized literal value and language tag.
        Throws:
        InvalidLiteral - If the language tag was not recognized or verified, or the literal value could not be normalized due to an error.

      • key

        @Nonnull
public java.lang.String key()
        A unique key for this language handler
        Specified by:
        key in interface LanguageHandler
        Returns:
        A unique `String` key.