Quelle JspPage.java Sprache: JAVA

/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jakarta.servlet.jsp;

import jakarta.servlet.Servlet;

/**
* The JspPage interface describes the generic interaction that a JSP Page Implementation class must satisfy; pages that
* use the HTTP protocol are described by the HttpJspPage interface.
* 
* Two plus One Methods
* 
* The interface defines a protocol with 3 methods; only two of them: jspInit() and jspDestroy() are part of this
* interface as the signature of the third method: _jspService() depends on the specific protocol used and cannot be
* expressed in a generic way in Java.
* 
* A class implementing this interface is responsible for invoking the above methods at the appropriate time based on
* the corresponding Servlet-based method invocations.
* 
* The jspInit() and jspDestroy() methods can be defined by a JSP author, but the _jspService() method is defined
* automatically by the JSP processor based on the contents of the JSP page.
* 
* _jspService()
* 
* The _jspService()method corresponds to the body of the JSP page. This method is defined automatically by the JSP
* container and should never be defined by the JSP page author.
* 
* If a superclass is specified using the extends attribute, that superclass may choose to perform some actions in its
* service() method before or after calling the _jspService() method. See using the extends attribute in the JSP_Engine
* chapter of the JSP specification.
* 
* The specific signature depends on the protocol supported by the JSP page.
*
* <pre>
* public void _jspService(ServletRequestSubtype request,
* ServletResponseSubtype response)
* throws ServletException, IOException;
* </pre>
*/

public interface JspPage extends Servlet {

 /**
 * The jspInit() method is invoked when the JSP page is initialized. It is the responsibility of the JSP
 * implementation (and of the class mentioned by the extends attribute, if present) that at this point invocations
 * to the getServletConfig() method will return the desired value.
 * 
 * A JSP page can override this method by including a definition for it in a declaration element.
 * 
 * A JSP page should redefine the init() method from Servlet.
 */
 void jspInit();

 /**
 * The jspDestroy() method is invoked when the JSP page is about to be destroyed.
 * 
 * A JSP page can override this method by including a definition for it in a declaration element.
 * 
 * A JSP page should redefine the destroy() method from Servlet.
 */
 void jspDestroy();

}

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