Quadcap Embeddable Server

com/quadcap/http/servlets/jsp/TagJspSetProperty.java

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package com.quadcap.http.servlets.jsp;

/* Copyright 1999 - 2003 Quadcap Software.  All rights reserved.
 *
 * This software is distributed under the Quadcap Free Software License.
 * This software may be used or modified for any purpose, personal or
 * commercial.  Open Source redistributions are permitted.  Commercial
 * redistribution of larger works derived from, or works which bundle
 * this software requires a "Commercial Redistribution License"; see
 * http://www.quadcap.com/purchase.
 *
 * Redistributions qualify as "Open Source" under  one of the following terms:
 *   
 *    Redistributions are made at no charge beyond the reasonable cost of
 *    materials and delivery.
 *
 *    Redistributions are accompanied by a copy of the Source Code or by an
 *    irrevocable offer to provide a copy of the Source Code for up to three
 *    years at the cost of materials and delivery.  Such redistributions
 *    must allow further use, modification, and redistribution of the Source
 *    Code under substantially the same terms as this license.
 *
 * Redistributions of source code must retain the copyright notices as they
 * appear in each source code file, these license terms, and the
 * disclaimer/limitation of liability set forth as paragraph 6 below.
 *
 * Redistributions in binary form must reproduce this Copyright Notice,
 * these license terms, and the disclaimer/limitation of liability set
 * forth as paragraph 6 below, in the documentation and/or other materials
 * provided with the distribution.
 *
 * The Software is provided on an "AS IS" basis.  No warranty is
 * provided that the Software is free of defects, or fit for a
 * particular purpose.  
 *
 * Limitation of Liability. Quadcap Software shall not be liable
 * for any damages suffered by the Licensee or any third party resulting
 * from use of the Software.
 */

import java.io.PrintWriter;

import java.util.Hashtable;

import org.xml.sax.AttributeList;

import com.quadcap.util.Debug;

/**
 * 
 * Implementation of the <b>&lt;jsp:setProperty&gt;</b> tag.
 *
 * @author Stan Bailes
 */
public class TagJspSetProperty extends TagJsp {
    public TagJspSetProperty() {}

    public TagJspSetProperty(TagContext context) {
        super(context);
    }

    public TagInstance makeInstance(TagContext context) {
        return new TagJspSetProperty(context);
    }

        throws JspException
    {
        super.doStartTag(tagName, attributes);
        context.addPageDirective("import", 
                                 "com.quadcap.http.servlets.jsp.PropertyUtils");

        PrintWriter w = context.getPrintWriter();
        String name = attributes.getValue("name");
        String prop = attributes.getValue("property");
        if (prop.equals("*")) {
            w.print("        PropertyUtils.");
            w.print("setPropertiesFromRequest(");
            w.print(name);
            w.println(", request);");
            return;
        }

        String param = attributes.getValue("param");
        if (param != null) {
            w.print("        PropertyUtils.");
            w.print("setPropertyFromRequestParameter(");
            w.print(name);
            w.print(", request, \"");
            w.print(param);
            w.println("\");");  
            return;
        }

        String value = attributes.getValue("value").trim();
        if (value != null) {
            if (value.startsWith("<%=") && value.endsWith("%>")) {
                value = value.substring(3);
                value = value.substring(value.length() - 2).trim();
            } else {
                value = "\"" + value + "\"";
            }
            w.print("        PropertyUtils.");
            w.print("setPropertyFromValue(");
            w.print(name);
            w.print(", String.valueOf(");
            w.print(value);
            w.println("));");   
            return;
        }

        throw new JspException("Bad jsp:setProperty tag");
    }
}