dk.defxws.fedoragsearch.server.URIResolverImpl.java Source code

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Here is the source code for dk.defxws.fedoragsearch.server.URIResolverImpl.java

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//$Id:  $
/*
 * <p><b>License and Copyright: </b>The contents of this file is subject to the
 * same open source license as the Fedora Repository System at www.fedora-commons.org
 * Copyright &copy; 2006, 2007, 2008, 2009, 2010, 2011, 2012 by The Technical University of Denmark.
 * All rights reserved.</p>
 */
package dk.defxws.fedoragsearch.server;

import java.net.MalformedURLException;
import java.net.URL;

import javax.xml.transform.Source;
import javax.xml.transform.TransformerException;
import javax.xml.transform.URIResolver;
import javax.xml.transform.stream.StreamSource;

import org.apache.commons.httpclient.UsernamePasswordCredentials;
import org.apache.log4j.Logger;

import org.fcrepo.common.http.WebClient;

/**
 * custom URIResolver for ssl access to fedora repository
 * 
 * @author  gsp@dtv.dk
 * @version 
 */
public class URIResolverImpl implements URIResolver {

    private Config config;

    private final Logger logger = Logger.getLogger(URIResolverImpl.class);

    public void setConfig(Config config) {
        this.config = config;
    }

    public Source resolve(String href, String base) throws TransformerException {
        Source source = null;
        URL url;
        try {
            url = new URL(href);
        } catch (MalformedURLException e) {
            // the XSLT processor should try to resolve the URI itself, 
            // here it may be a location path, which it can resolve
            if (logger.isDebugEnabled())
                logger.debug("resolve back to XSLT processor MalformedURLException href=" + href + " base=" + base
                        + " exception=" + e);
            return null;
        }
        String reposName = config.getRepositoryNameFromUrl(url);
        if (reposName == null || reposName.length() == 0) {
            // here other resolve mechanism may be coded, or
            // the XSLT processor should try to resolve the URI itself,
            // e.g. it can resolve the file protocol
            if (logger.isDebugEnabled())
                logger.debug("resolve back to XSLT processor no reposName href=" + href + " base=" + base + " url="
                        + url.toString());
            return null;
        }
        if (logger.isDebugEnabled())
            logger.debug("resolve get from repository href=" + href + " base=" + base + " url=" + url.toString()
                    + " reposName=" + reposName);
        System.setProperty("javax.net.ssl.trustStore", config.getTrustStorePath(reposName));
        System.setProperty("javax.net.ssl.trustStorePassword", config.getTrustStorePass(reposName));
        WebClient client = new WebClient();
        try {
            if (logger.isDebugEnabled())
                logger.debug("resolve get from reposName=" + reposName + " source=\n"
                        + client.getResponseAsString(href, false, new UsernamePasswordCredentials(
                                config.getFedoraUser(reposName), config.getFedoraPass(reposName))));
            source = new StreamSource(
                    client.get(href, false, config.getFedoraUser(reposName), config.getFedoraPass(reposName)));
        } catch (Exception e) {
            throw new TransformerException(
                    "resolve get from reposName=" + reposName + " href=" + href + " base=" + base + " exception=\n",
                    e);
        }
        return source;
    }

}