alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

What this is

This file is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Other links

The source code

/*   
 *  Copyright 1999-2004 The Apache Software Foundation
 *
 *  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 examples;

import java.io.IOException;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspTagException;
import javax.servlet.jsp.tagext.BodyTag;

/**
 * Example1: the simplest tag
 * Collect attributes and call into some actions
 *
 * 
 */

public class FooTag 
    extends ExampleTagBase 
    implements BodyTag 
{
    private String atts[] = new String[3];
    int i = 0;
    
    public void resetCustomAttributes() {}
    private final void setAtt(int index, String value) {
        atts[index] = value;
    }
    
    public void setAtt1(String value) {
        setAtt(0, value);
    }
    
    public void setAtt2(String value) {
        setAtt(1, value);
    }

    public void setAtt3(String value) {
        setAtt(2, value);
    }
    
    /**
     * Process start tag
     *
     * @return EVAL_BODY_INCLUDE
     */
    public int doStartTag() throws JspException {
	return EVAL_BODY_TAG;
    }

    public void doInitBody() throws JspException {
        pageContext.setAttribute("member", atts[i]);
        i++;
    }
    
    public int doAfterBody() throws JspException {
        try {
            if (i == 3) {
                bodyOut.writeOut(bodyOut.getEnclosingWriter());
                return SKIP_BODY;
            } else
                pageContext.setAttribute("member", atts[i]);
            i++;
            return EVAL_BODY_TAG;
        } catch (IOException ex) {
            throw new JspTagException(ex.toString());
        }
    }
}

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.