/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
* Free SoftwareFoundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.jstl;
import com.caucho.util.L10N;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.TagSupport;
public class RemoveTag extends TagSupport {
private static L10N L = new L10N(RemoveTag.class);
private String var;
private String scope;
/**
* Sets the variable to assign
*/
public void setVar(String var)
{
this.var = var;
}
/**
* Sets the scope of the variable.
*/
public void setScope(String scope)
{
this.scope = scope;
}
/**
* Process the tag.
*/
public int doStartTag()
throws JspException
{
if (scope == null) {
pageContext.removeAttribute(var);
}
else if (scope.equals("page")) {
pageContext.removeAttribute(var);
}
else if (scope.equals("request")) {
pageContext.getRequest().removeAttribute(var);
}
else if (scope.equals("session")) {
pageContext.getSession().removeAttribute(var);
}
else if (scope.equals("application")) {
pageContext.getServletContext().removeAttribute(var);
}
else
throw new JspException(L.l("illegal scope value {0}", scope));
return SKIP_BODY;
}
}