this.credentials = credentials;
    }

    /*
     * (non-Javadoc)
     *
     * @see org.codelibs.fess.crawler.client.http.Authentication#getAuthScheme()
     */
    @Override
    public AuthScheme getAuthScheme() {
        return authScheme;
    }

    public void setAuthScheme(final AuthScheme authScheme) {
        this.authScheme = authScheme;
    }

            // Use preemptive authorisation if no other authorisation has been established
            builder.addInterceptorFirst(new PreemptiveAuth(getAuthScheme(authentications), isPreemptiveEnabled(authentications)));
        }
    }

    private AuthScheme getAuthScheme(final Collection<Authentication> authentications) {
        if (authentications.size() == 1) {

/**
 *
 *
 * @author shinsuke
 *
 */
public interface Authentication {

    AuthScope getAuthScope();

    Credentials getCredentials();

    AuthScheme getAuthScheme();

    private WebConfig webConfig;

    public Authentication getAuthentication() {
        return new AuthenticationImpl(getAuthScope(), getCredentials(), getAuthScheme());
    }

    private AuthScheme getAuthScheme() {
        final String scheme = getProtocolScheme();
        if (Constants.BASIC.equals(scheme)) {
            return new BasicScheme();
        }

            for (final String webAuthName : webAuthNames) {
                final String scheme = paramMap.get(CRAWLER_WEB_AUTH + "." + webAuthName + ".scheme");

                final AuthScheme authScheme = getAuthScheme(paramMap, webAuthName, scheme);
                final AuthScope authScope = getAuthScope(webAuthName, scheme, paramMap);
                final Credentials credentials = getCredentials(webAuthName, scheme, paramMap);

            final AuthScope authScope = authentication.getAuthScope();
            credentialsProvider.setCredentials(authScope, authentication.getCredentials());
            final AuthScheme authScheme = authentication.getAuthScheme();
            if (authScope.getHost() != null && authScheme != null) {
                final HttpHost targetHost = new HttpHost(authScope.getHost(), authScope.getPort());
                authCache.put(targetHost, authScheme);

        final List<Pair<FormScheme, Credentials>> formSchemeList = new ArrayList<>();
        for (final Authentication authentication : siteCredentialList) {
            final AuthScheme authScheme = authentication.getAuthScheme();
            if (authScheme instanceof FormScheme) {
                formSchemeList.add(new Pair<>((FormScheme) authScheme, authentication.getCredentials()));
            } else {