com.liferay.taglib.util.GetUrlTag.java Source code

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Here is the source code for com.liferay.taglib.util.GetUrlTag.java

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/**
 * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.taglib.util;

import com.liferay.portal.kernel.util.StringPool;
import com.liferay.portal.kernel.util.Time;
import com.liferay.portal.kernel.util.Validator;
import com.liferay.portal.kernel.webcache.WebCacheItem;
import com.liferay.portal.kernel.webcache.WebCachePoolUtil;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.TagSupport;

/**
 * @author Brian Wing Shun Chan
 */
public class GetUrlTag extends TagSupport {

    @Override
    public int doEndTag() throws JspException {
        try {
            WebCacheItem wci = new GetUrlWebCacheItem(_url, _expires);

            String content = (String) WebCachePoolUtil.get(GetUrlTag.class.getName() + StringPool.PERIOD + _url,
                    wci);

            if (Validator.isNotNull(_var)) {
                pageContext.setAttribute(_var, content);
            } else {
                JspWriter jspWriter = pageContext.getOut();

                jspWriter.print(content);
            }

            return EVAL_PAGE;
        } catch (Exception e) {
            throw new JspException(e);
        }
    }

    public void setUrl(String url) {
        _url = url;
    }

    public void setExpires(long expires) {
        _expires = expires;
    }

    public void setVar(String var) {
        _var = var;
    }

    private String _url;
    private long _expires = Time.WEEK;
    private String _var;

}