org.exoplatform.content.service.RSSContentPlugin.java Source code

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Here is the source code for org.exoplatform.content.service.RSSContentPlugin.java

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/***************************************************************************
 * Copyright 2001-2006 The eXo Platform SARL         All rights reserved.  *
 * Please look at license.txt in info directory for more license detail.   *
 **************************************************************************/
package org.exoplatform.content.service;

import java.io.InputStream;
import java.net.URL;
import java.util.List;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.methods.GetMethod;
import org.exoplatform.commons.utils.PageList;
import org.exoplatform.content.model.ContentItem;
import org.exoplatform.content.model.ContentNode;
import org.exoplatform.services.common.HttpClientImpl;
import org.exoplatform.services.rss.parser.DefaultRSSChannel;
import org.exoplatform.services.rss.parser.DefaultRSSItem;
import org.exoplatform.services.rss.parser.RSSDocument;
import org.exoplatform.services.rss.parser.RSSParser;
import org.w3c.dom.Document;

/**
 * Created by The eXo Platform SARL
 * Author : Nhu Dinh Thuan
 *          nhudinhthuan@exoplatform.com
 * Jul 21, 2006  
 */
public class RSSContentPlugin extends ContentPlugin {

    private RSSParser service_;

    public RSSContentPlugin(RSSParser service) {
        super();
        type = "rss";
        service_ = service;
    }

    @SuppressWarnings("unchecked")
    public PageList loadContentMeta(ContentNode node) throws Exception {
        URL uri = new URL(node.getUrl());
        // TODO: tuan.pham CS-2531 get encode from rss file
        GetMethod get = null;
        HttpClientImpl httpClientService = new HttpClientImpl(uri);
        get = httpClientService.getMethod(uri.getFile());
        get.setFollowRedirects(true);
        int statusCode = httpClientService.getHttpClient().executeMethod(get);
        if (statusCode != HttpStatus.SC_OK) {
            throw new Exception("Server response code " + statusCode);
        }
        InputStream input = get.getResponseBodyAsStream();
        DocumentBuilder docbuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
        Document doc = docbuilder.parse(input);
        String encode = doc.getXmlEncoding();
        if (encode == null || encode.trim().length() == 0)
            encode = "utf-8";
        RSSDocument<DefaultRSSChannel, RSSItem> document = service_.createDocument(uri, encode,
                DefaultRSSChannel.class, RSSItem.class);
        List<RSSItem> list = document.getItems();
        return new ContentPageList(list);
    }

    static public class RSSItem extends DefaultRSSItem implements ContentItem {

        public RSSItem() {
        }

        // @SuppressWarnings("unused")
        // TODO: dang.tung -> set creator of content
        public void setCreator(String creator) {
            super.setCreator(creator);
        }

        public String getCreator() {
            return super.getCreator();
        }

    }

}