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AbstractServletConfigWrapper.java | 0% | 0% | 0% | 0% |
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/*
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* ====================================================================
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*
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* The Apache Software License, Version 1.1
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*
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* Copyright (c) 2001-2003 The Apache Software Foundation. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The end-user documentation included with the redistribution, if
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* any, must include the following acknowlegement:
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* "This product includes software developed by the
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* Apache Software Foundation (http://www.apache.org/)."
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* Alternately, this acknowlegement may appear in the software itself,
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* if and wherever such third-party acknowlegements normally appear.
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*
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* 4. The names "The Jakarta Project", "Cactus" and "Apache Software
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* Foundation" must not be used to endorse or promote products
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* derived from this software without prior written permission. For
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* written permission, please contact apache@apache.org.
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*
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* 5. Products derived from this software may not be called "Apache"
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* nor may "Apache" appear in their names without prior written
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* permission of the Apache Group.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*
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*/
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package org.apache.cactus.server;
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import java.util.Enumeration;
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import java.util.Hashtable;
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import java.util.Vector;
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import javax.servlet.ServletConfig;
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import javax.servlet.ServletContext;
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/**
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* Abstract wrapper around <code>ServletConfig</code> which overrides the
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* <code>getServletContext()</code> method to return our own wrapper around
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* <code>ServletContext</code>. This class provides a common implementation
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* of the wrapper for the different servlet API.
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*
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* @author <a href="mailto:vmassol@apache.org">Vincent Massol</a>
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*
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* @version $Id: AbstractServletConfigWrapper.java,v 1.4 2003/05/26 11:45:22 cmlenz Exp $
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*/
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public abstract class AbstractServletConfigWrapper |
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implements ServletConfig
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{ |
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/**
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* The original servlet config object
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*/
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protected ServletConfig originalConfig;
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/**
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* List of parameters set using the <code>setInitParameter()</code> method.
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*/
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protected Hashtable initParameters;
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/**
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* Simulated name of the servlet
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*/
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protected String servletName;
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/**
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* @param theOriginalConfig the original servlet config object
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*/
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public AbstractServletConfigWrapper(ServletConfig theOriginalConfig)
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{ |
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this.originalConfig = theOriginalConfig;
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this.initParameters = new Hashtable(); |
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} |
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/**
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* Sets a parameter as if it were set in the <code>web.xml</code> file.
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*
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* @param theName the parameter's name
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* @param theValue the parameter's value
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*/
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public void setInitParameter(String theName, String theValue) |
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{ |
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this.initParameters.put(theName, theValue);
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} |
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/**
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* Sets the servlet name. That will be the value returned by the
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* <code>getServletName()</code> method.
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*
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* @param theServletName the servlet's name
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*/
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public void setServletName(String theServletName) |
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{ |
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this.servletName = theServletName;
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} |
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/**
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* @return the original unmodified config object
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* @since 1.5
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*/
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public ServletConfig getOriginalConfig()
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{ |
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return this.originalConfig; |
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} |
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//--Overridden methods ----------------------------------------------------
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/**
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* @return our own wrapped servlet context object
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*/
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public ServletContext getServletContext()
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{ |
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return new ServletContextWrapper( |
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this.originalConfig.getServletContext());
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} |
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/**
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* @param theName the name of the parameter's value to return
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* @return the value of the parameter, looking for it first in the list of
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* parameters set using the <code>setInitParameter()</code> method
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* and then in those set in <code>web.xml</code>.
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*/
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public String getInitParameter(String theName)
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{ |
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// Look first in the list of parameters set using the
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// setInitParameter() method.
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String value = (String) this.initParameters.get(theName);
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if (value == null) |
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{ |
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value = this.originalConfig.getInitParameter(theName);
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} |
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return value;
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} |
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/**
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* @return the union of the parameters defined in the Redirector
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* <code>web.xml</code> file and the one set using the
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* <code>setInitParameter()</code> method.
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*/
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public Enumeration getInitParameterNames()
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{ |
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Vector names = new Vector();
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// Add parameters that were added using setInitParameter()
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Enumeration enum = this.initParameters.keys();
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while (enum.hasMoreElements())
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{ |
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String value = (String) enum.nextElement(); |
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names.add(value); |
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} |
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// Add parameters from web.xml
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enum = this.originalConfig.getInitParameterNames();
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while (enum.hasMoreElements())
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{ |
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String value = (String) enum.nextElement(); |
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// Do not add parameters that have been overriden by calling
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// the setInitParameter() method.
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if (!names.contains(value))
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{ |
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names.add(value); |
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} |
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} |
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return names.elements();
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} |
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/**
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* @return the simulated servlet's name if defined or the redirector
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* servlet's name
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*/
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public String getServletName()
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{ |
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if (this.servletName != null) |
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{ |
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return this.servletName; |
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} |
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return this.originalConfig.getServletName(); |
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} |
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} |
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