containerlistsizetag.java

java 写的一个新闻发布系统

package org.jahia.taglibs.container;

import org.jahia.data.containers.JahiaContainerList;
import org.jahia.exceptions.JahiaException;
import org.jahia.taglibs.util.Utils;
import org.jahia.taglibs.container.ContainerListTag;
import org.jahia.utils.JahiaConsole;

import java.io.*;
import java.util.*;

import javax.servlet.*;
import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;


/**
 * Return the number of containers of the enclosing container list.
 *
 * @author  NK
 */
public class ContainerListSizeTag extends BodyTagSupport {

    public int doStartTag() {
        JahiaConsole.println("ContainerListSizeTag: doStartTag", "Started");

        int size = 0;
        // gets the enclosing tag ContainerListTag
        ContainerListTag containerListTag = (ContainerListTag) findAncestorWithClass(this, ContainerListTag.class);
        if (containerListTag != null) {
            size = containerListTag.getSize();
            JahiaConsole.println("ContainerListSizeTag: doStartTag", "Size : " + size);
        }
		try {
            JspWriter out = pageContext.getOut();
            out.print(size);
		} catch (IOException ioe) {
		    JahiaConsole.println("ContainerListSizeTag: doStartTag ",ioe.toString());
		}
        return SKIP_BODY;
    }

}