RedirectHandlerImpl.java

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 * JBoss, a division of Red Hat                                               *
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package org.gatein.web.redirect.implementation;

import java.util.LinkedHashMap;
import java.util.Map;

import org.gatein.web.redirect.RedirectRequestHandler;
import org.gatein.web.redirect.api.RedirectHandler;
import org.gatein.web.redirect.api.SiteRedirectService;
import org.picocontainer.Startable;

/**
 * @author <a href="mailto:mwringe@redhat.com">Matt Wringe</a>
 * @version $Revision$
 */
public class RedirectHandlerImpl implements RedirectHandler, Startable {
    SiteRedirectService siteRedirectService;

    public RedirectHandlerImpl(SiteRedirectService siteRedirectService) {
        this.siteRedirectService = siteRedirectService;
    }

    @Override
    public Map<String, String> getAlternativeRedirects(String siteName, String URI, boolean setPreference) {
        Map<String, String> redirectNames = siteRedirectService.getAlternativeSites(siteName, true);

        Map<String, String> redirects = new LinkedHashMap<String, String>(); // use LinkedHashMap to keep the List order intact
        for (String redirectName : redirectNames.keySet()) {
            String redirectURI = createRedirectURI(redirectNames.get(redirectName), URI);
            redirects.put(redirectName, redirectURI);
        }

        return redirects;
    }

    protected String createRedirectURI(String redirectSite, String URI) {
        String redirectURI = URI;

        if (redirectURI.contains("&")) {
            redirectURI += "?";
        } else {
            if (redirectURI.endsWith("/")) {
                redirectURI = redirectURI.substring(0, redirectURI.length() - 1);
            }
            redirectURI += "?";
        }

        redirectURI += RedirectRequestHandler.REDIRECT_FLAG + "=" + redirectSite;

        return redirectURI;
    }

    @Override
    public void start() {
        // only needed because exo kernel requires this method (really its the underlying picocontianer that needs it)
    }

    @Override
    public void stop() {
        // only needed because exo kernel requires this method (really its the underlying picocontianer that needs it)
    }
}