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Tomcat example source code file (

This example Tomcat source code file ( is included in the "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Tomcat tags/keywords

context, exception, namingresources, namingresources, object, object, rule, setnextnamingrule, setnextnamingrule, setnextrule, string, string, stringbuffer

The Tomcat source code

/* $Id: 467222 2006-10-24 03:17:11Z markt $
 * 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
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.

package org.apache.catalina.startup;

import org.apache.catalina.Context;
import org.apache.catalina.deploy.NamingResources;
import org.apache.tomcat.util.IntrospectionUtils;
import org.apache.tomcat.util.digester.Rule;

 * <p>Rule implementation that calls a method on the (top-1) (parent)
 * object, passing the top object (child) as an argument.  It is
 * commonly used to establish parent-child relationships.</p>
 * <p>This rule now supports more flexible method matching by default.
 * It is possible that this may break (some) code 
 * written against release 1.1.1 or earlier.
 * </p> 

public class SetNextNamingRule extends Rule {

    // ----------------------------------------------------------- Constructors

     * Construct a "set next" rule with the specified method name.
     * @param methodName Method name of the parent method to call
     * @param paramType Java class of the parent method's argument
     *  (if you wish to use a primitive type, specify the corresonding
     *  Java wrapper class instead, such as <code>java.lang.Boolean
     *  for a <code>boolean parameter)
    public SetNextNamingRule(String methodName,
                       String paramType) {

        this.methodName = methodName;
        this.paramType = paramType;


    // ----------------------------------------------------- Instance Variables

     * The method name to call on the parent object.
    protected String methodName = null;

     * The Java class name of the parameter type expected by the method.
    protected String paramType = null;

    // --------------------------------------------------------- Public Methods

     * Process the end of this element.
    public void end() throws Exception {

        // Identify the objects to be used
        Object child = digester.peek(0);
        Object parent = digester.peek(1);

        NamingResources namingResources = null;
        if (parent instanceof Context) {
            namingResources = ((Context) parent).getNamingResources();
        } else {
            namingResources = (NamingResources) parent;
        // Call the specified method
        IntrospectionUtils.callMethod1(namingResources, methodName,
                child, paramType, digester.getClassLoader());


     * Render a printable version of this Rule.
    public String toString() {

        StringBuffer sb = new StringBuffer("SetNextRule[");
        sb.append(", paramType=");
        return (sb.toString());



Other Tomcat examples (source code examples)

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