com.ewcms.publication.freemarker.directive.out.article.RelationsDirectiveOut.java Source code

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Here is the source code for com.ewcms.publication.freemarker.directive.out.article.RelationsDirectiveOut.java

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/**
 * Copyright (c)2010-2011 Enterprise Website Content Management System(EWCMS), All rights reserved.
 * EWCMS PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 * http://www.ewcms.com
 */

package com.ewcms.publication.freemarker.directive.out.article;

import java.util.List;
import java.util.Map;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.util.Assert;

import com.ewcms.common.lang.EmptyUtil;
import com.ewcms.publication.dao.ArticleDaoable;
import com.ewcms.publication.freemarker.directive.out.HtmlDirectiveOut;
import com.ewcms.publication.module.ArticleInfo;

import freemarker.core.Environment;
import freemarker.template.TemplateException;

/**
 * 
 * 
 * @author wangwei
 */
public class RelationsDirectiveOut extends HtmlDirectiveOut {
    private static final Logger logger = LoggerFactory.getLogger(RelationsDirectiveOut.class);

    private final ArticleDaoable articleService;

    public RelationsDirectiveOut(ArticleDaoable articleService) {
        this.articleService = articleService;
    }

    @Override
    @SuppressWarnings({ "rawtypes", "unchecked" })
    public Object loopValue(Object value, Environment env, Map params) throws TemplateException {
        Assert.notNull(value);
        List<ArticleInfo> articles = getRelation((List<Long>) value);
        return articles;
    }

    @Override
    @SuppressWarnings({ "rawtypes", "unchecked" })
    public String constructOut(Object value, Environment env, Map params) throws TemplateException {
        Assert.notNull(value);
        List<Long> list = (List<Long>) value;
        if (EmptyUtil.isCollectionEmpty(list)) {
            logger.debug("Relateds is empty");
            return null;
        }

        StringBuilder builder = new StringBuilder();

        builder.append("<ul");
        String c = getClassValue(params);
        if (EmptyUtil.isNotNull(c)) {
            builder.append(" class=\"").append(c).append("\"");
        }
        String s = getStyleValue(params);
        if (EmptyUtil.isNotNull(s)) {
            builder.append(" style=\"").append(s).append("\"");
        }
        builder.append(">");
        List<ArticleInfo> articles = this.getRelation(list);
        for (ArticleInfo article : articles) {
            builder.append("<li>");
            builder.append("<a href=\"").append(article.getUrl()).append("\" title=\"").append(article.getTitle())
                    .append("\" target=\"_blank\">");
            builder.append(article.getTitle());
            builder.append("</a>");
            builder.append("</li>");
        }
        builder.append("</ul>");

        return builder.toString();
    }

    private List<ArticleInfo> getRelation(List<Long> ids) {
        return articleService.findPublish(ids);
    }
}