ubic.gemma.web.controller.common.rss.CustomRssViewer.java Source code

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Here is the source code for ubic.gemma.web.controller.common.rss.CustomRssViewer.java

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/*
 * The Gemma project
 *
 * Copyright (c) 2006 University of British Columbia
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
package ubic.gemma.web.controller.common.rss;

import com.sun.syndication.feed.rss.Channel;
import com.sun.syndication.feed.rss.Content;
import com.sun.syndication.feed.rss.Item;
import org.apache.commons.lang3.time.DateUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.view.feed.AbstractRssFeedView;
import ubic.gemma.model.expression.experiment.ExpressionExperiment;
import ubic.gemma.persistence.service.expression.experiment.ExpressionExperimentService;
import ubic.gemma.persistence.util.Settings;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.*;

/**
 * @author sshao
 */
@Component
public class CustomRssViewer extends AbstractRssFeedView {

    @Autowired
    ExpressionExperimentService expressionExperimentService;

    @Override
    protected List<Item> buildFeedItems(Map<String, Object> model, HttpServletRequest request,
            HttpServletResponse response) {

        @SuppressWarnings("unchecked")
        Map<ExpressionExperiment, String> experiments = (Map<ExpressionExperiment, String>) model
                .get("feedContent");
        List<Item> items = new ArrayList<>(experiments.size());

        // Set content of each expression experiment
        for (Map.Entry<ExpressionExperiment, String> entry : experiments.entrySet()) {
            ExpressionExperiment e = entry.getKey();

            String title = e.getShortName() + " (" + entry.getValue() + "): " + e.getName();
            String link = Settings.getBaseUrl() + "expressionExperiment/showExpressionExperiment.html?id="
                    + e.getId().toString();

            int maxLength = 500;
            if (e.getDescription().length() < 500) {
                maxLength = e.getDescription().length();
            }

            Item item = new Item();
            Content content = new Content();
            content.setValue(e.getDescription().substring(0, maxLength) + " ...");
            item.setContent(content);
            item.setTitle(title);
            item.setLink(link);

            if (e.getCurationDetails() != null) {
                item.setPubDate(e.getCurationDetails().getLastUpdated());
            }
            items.add(item);
        }
        return items;
    }

    @Override
    protected void buildFeedMetadata(Map<String, Object> model, Channel feed, HttpServletRequest request) {

        Calendar c = Calendar.getInstance();
        Date date = c.getTime();
        date = DateUtils.addWeeks(date, -1);

        int updateCount = (Integer) model.get("updateCount");
        int newCount = (Integer) model.get("newCount");
        feed.setTitle("RSS | Gemma");
        feed.setDescription(
                updateCount + " updated experiments and " + newCount + " new experiments since " + date);
        feed.setLink(Settings.getBaseUrl());

        super.buildFeedMetadata(model, feed, request);
    }

}