/**
* Indicates if the current variant includes the given variant.
*
* @param other The other variant.
* @return True if the current variant includes the other.
*/
public boolean includes(Variant other) {
boolean result = other != null;
// Compare the character set
if (result) {
result = (getCharacterSet() == null) || getCharacterSet().includes(other.getCharacterSet());
}
// Compare the media type
if (result) {
result = (getMediaType() == null) || getMediaType().includes(other.getMediaType());
}
// Compare the languages
if (result) {
result =
(getLanguages().isEmpty())
|| getLanguages().contains(Language.ALL)
|| getLanguages().containsAll(other.getLanguages());
}
// Compare the encodings
if (result) {
result =
(getEncodings().isEmpty())
|| getEncodings().contains(Encoding.ALL)
|| getEncodings().containsAll(other.getEncodings());
}
return result;
}
/**
* Scores a variant relatively to enriched client preferences.
*
* @param variant The variant to score.
* @return The enriched client preferences.
*/
public float scoreVariant(Variant variant) {
float result = -1.0F;
float languageScore = scoreLanguages(variant.getLanguages());
if (languageScore != -1.0F) {
float mediaTypeScore = scoreMediaType(variant.getMediaType());
if (mediaTypeScore != -1.0F) {
float characterSetScore = scoreCharacterSet(variant.getCharacterSet());
if (characterSetScore != -1.0F) {
float encodingScore = scoreEncodings(variant.getEncodings());
if (encodingScore != -1.0F) {
// Return the weighted average score
result =
((languageScore * 4.0F)
+ (mediaTypeScore * 3.0F)
+ (characterSetScore * 2.0F)
+ encodingScore)
/ 9.0F;
}
}
}
}
return result;
}
/**
* Constructor from a variant.
*
* @param variant The variant to copy.
* @param modificationDate The modification date.
* @param tag The tag.
*/
public Representation(Variant variant, Date modificationDate, Tag tag) {
setCharacterSet(variant.getCharacterSet());
setEncodings(variant.getEncodings());
setLocationRef(variant.getLocationRef());
setLanguages(variant.getLanguages());
setMediaType(variant.getMediaType());
setModificationDate(modificationDate);
setTag(tag);
}
/**
* Indicates if the current variant is equal to the given variant.
*
* @param other The other variant.
* @return True if the current variant includes the other.
*/
@Override
public boolean equals(Object other) {
boolean result = (other instanceof Variant);
if (result && (other != this)) {
Variant otherVariant = (Variant) other;
// Compare the character set
if (result) {
result =
((getCharacterSet() == null) && (otherVariant.getCharacterSet() == null)
|| (getCharacterSet() != null)
&& getCharacterSet().equals(otherVariant.getCharacterSet()));
}
// Compare the media type
if (result) {
result =
((getMediaType() == null) && (otherVariant.getMediaType() == null)
|| (getMediaType() != null) && getMediaType().equals(otherVariant.getMediaType()));
}
// Compare the languages
if (result) {
result = getLanguages().equals(otherVariant.getLanguages());
}
// Compare the encodings
if (result) {
result = getEncodings().equals(otherVariant.getEncodings());
}
// Compare the location URI
if (result) {
result =
((getLocationRef() == null) && (otherVariant.getLocationRef() == null)
|| (getLocationRef() != null)
&& getLocationRef().equals(otherVariant.getLocationRef()));
}
}
return result;
}