pi3servletconfig.java

mini http server,可以集成嵌入到程序中,实现简单的web功能

/*____________________________________________________________________________*\
 *

 Copyright (c) 1997-2003 John Roy, Holger Zimmermann. All rights reserved.

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    derived from this software without specific prior written permission. 

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 *____________________________________________________________________________*|
 *
 * $Source: /cvsroot/pi3web/Pi3Web_200/Source/Servlet/org/pi3/servlet/core/Pi3ServletConfig.java,v $
 * $Date: 2003/05/13 18:42:21 $
 *
 Description:
	Implementation of servlet API ServletConfig interface.

\*____________________________________________________________________________*/

package org.pi3.servlet.core;

import java.util.Enumeration;
import java.util.Hashtable;
import javax.servlet.ServletContext;
import javax.servlet.ServletConfig;


/**
 * 
 * A servlet configuration object used by a servlet container
 * used to pass information to a servlet during initialization. 
 *
 * <p>The configuration information contains initialization parameters,
 * which are a set of name/value pairs, and a {@link ServletContext} object,
 * which gives the servlet information about the server.
 *
 * @author 	Holger Zimmermann [[e-mail]]
 * @version	$Revision: 1.6 $
 *
 * @see 	Pi3ServletContext
 *
 */

final public class Pi3ServletConfig implements ServletConfig {
	private Pi3ServletContext con;
	private Hashtable params = new Hashtable();
	private String sname;




	/** This constructor is used by the native side */
	protected Pi3ServletConfig(Pi3ServletContext context) {
		con = context;
		sname = "";
	}




	/** This constructor is used by the native side */
	protected Pi3ServletConfig(Pi3ServletContext context, String servletname) {
		con = context;
		sname = servletname;
	}




    /**
     * Returns a reference to the {@link Pi3ServletContext} in which the servlet
     * is executing.
     *
     *
     * @return		a {@link Pi3ServletContext} object, used
     *			by the servlet to interact with its servlet container
     * 
     * @see		Pi3ServletContext
     *
     */

	public ServletContext getServletContext() {
		return (ServletContext)con;
	}
    
    
    

    /**
     * Returns a <code>String</code> containing the value of the 
     * named initialization parameter, or <code>null</code> if 
     * the parameter does not exist.
     *
     * @param name	a <code>String</code> specifying the name
     *			of the initialization parameter
     *
     * @return		a <code>String</code> containing the value 
     *			of the initialization parameter
     *
     */

	public String getInitParameter(String name) {
		return (String)params.get(name);		
	}

    
    

    /**
     * Returns the names of the servlet's initialization parameters
     * as an <code>Enumeration</code> of <code>String</code> objects, 
     * or an empty <code>Enumeration</code> if the servlet has
     * no initialization parameters.
     *
     * @return		an <code>Enumeration</code> of <code>String</code> 
     *			objects containing the names of the servlet's 
     *			initialization parameters
     *
     *
     *
     */

	public Enumeration getInitParameterNames() {
		return params.keys();
	}

    
    

    /**
     * Sets the value of a servlet initialization parameter as an
     * <code>Object</code> referenced by its name as <code>String</code>.
     *
     * @param name	an <code>String</code> with the name of the 
     *			initialization parameter to set
     * @param object	an <code>Object</code> presenting the 
     *			initialization parameter
     *
     *
     *
     */

	public void setInitParameter(String name, Object object) {
		params.put(name, object);
	}




    /**
     * Removes the servlet initialization parameter given by its name as
     * <code>String</code>.
     *
     * @param name	an <code>String</code> with the name of the 
     *			initialization parameter to remove
     *
     *
     *
     */

	public void removeInitParameter(String name) {
		params.remove(name);
	}




    /**
     * Returns the name of this servlet instance.
     * The name may be provided via server administration, assigned in the 
     * web application deployment descriptor, or for an unregistered (and thus
     * unnamed) servlet instance it will be the servlet's class name.
     *
     * @return		the name of the servlet instance
     *
     *
     *
     */

	public String getServletName() { return sname; };


	static {
		System.loadLibrary("Pi3ServletJNI");
	}
}