Method relativize

vm/JavaAPI/src/java/net/URI.java:786–811

Create a relative URI object against this URI, given the uri parameter. @param uri @return @see http://docs.oracle.com/javase/6/docs/api/java/net/URI.html#relativize%28java.net.URI%29

(URI uri)

     * @see <a href="http://docs.oracle.com/javase/6/docs/api/java/net/URI.html#relativize%28java.net.URI%29">http://docs.oracle.com/javase/6/docs/api/java/net/URI.html#relativize%28java.net.URI%29</a>
     */
    public URI relativize(URI uri) {
        if (isOpaque() || uri.isOpaque()) {
            return uri;
        }
        if (getScheme() == null || uri.getScheme() == null || getScheme().equals(uri.getScheme()) == false) {
            return uri;
        }
        String thisAuthority = null;
        String thatAuthority = null;
        String thisPath = null;
        String thatPath = null;
        if ((thisAuthority = getAuthority()) == null || (thatAuthority = uri.getAuthority()) == null
                || thisAuthority.equals(thatAuthority) == false) {
            return uri;
        }
        if ((thisPath = getPath()) == null || (thatPath = uri.getPath()) == null
                || thatPath.startsWith(thisPath + PATH_SEPARATOR) == false) {
            return uri;
        }
        try {
            return new URI(null, null, thatPath.substring(thisPath.length() + 1), uri.getQuery(), uri.getFragment());
        } catch (URISyntaxException e) {
            // Since the two URIs are pre-validated, we should never get here.
            throw new IllegalArgumentException(e.getMessage());
        }
    }

    /**
     * Resolve a relative URI by merging it with this URI.