paramtag.java

一个java写的business process management系统

/*
 * Copyright (c) 2003-2004, Alexander Greif
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Flow4J-Eclipse project nor the names of its
 *       contributors may be used to endorse or promote products derived from
 *       this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

package net.orthanc.flow4j.runtime.web.taglib;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.Tag;

/**
 * Class ParamTag TODO
 * @author agreif
 * 
 */
public class ParamTag extends Flow4JBodyTagSupport {

	protected String name;
	protected String value;

	/**
	 * TODO
	 * @param string
	 */
	public void setName(String string) {
		name = string;
	}

	/**
	 * TODO
	 * @param string
	 */
	public void setValue(String string) {
		value = string;
	}

	public int doEndTag() throws JspException {
		IParameterHolderTag parent = findParamHolderParent();
		if (parent != null) {
			IParameterHolderTag parameterHolder = (IParameterHolderTag) parent;
			if (value != null) {
				if (parameterHolder instanceof IParameterHolderTag)
					parameterHolder.addParameter(new Parameter(name, value));
			} else {
				String content;
				if (!(bodyContent != null
					&& (content = bodyContent.getString()).length() != 0))
					content = null; // No value

				parameterHolder.addParameter(new Parameter(name, content));
			}
		}
		
		clearProperties();
		
		return EVAL_PAGE;
	}
	
	
	
	private IParameterHolderTag findParamHolderParent() {
		Tag parent = getParent();
		while(parent != null)
		{
		   if(parent instanceof IParameterHolderTag)
			  return (IParameterHolderTag)parent;

			parent = parent.getParent();
		}
		
		return null;
	}
	
	
	
	
	
	
	

	
	
	
	public class Parameter {
		String name;
		String value;

		public Parameter(String name, String value) {
			this.name = name;
			this.value = value;
		}
		/**
		 * TODO
		 * @return
		 */
		public String getName() {
			return name;
		}

		/**
		 * TODO
		 * @return
		 */
		public String getValue() {
			return value;
		}

		/**
		 * TODO
		 * @param string
		 */
		public void setName(String string) {
			name = string;
		}

		/**
		 * TODO
		 * @param string
		 */
		public void setValue(String string) {
			value = string;
		}
		
		public String toString() {
			return "name: "+name+"    value: "+value;
		}
	}
}