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/*
 * 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 org.apache.catalina.startup;

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


/**
 * 

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.

* *

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. *

*/ 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 corresponding * Java wrapper class instead, such as java.lang.Boolean * for a 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 final String methodName; /** * The Java class name of the parameter type expected by the method. */ protected final String paramType; // --------------------------------------------------------- Public Methods /** * Process the end of this element. * * @param namespace the namespace URI of the matching element, or an * empty string if the parser is not namespace aware or the element has * no namespace * @param name the local name if the parser is namespace aware, or just * the element name otherwise */ @Override public void end(String namespace, String name) throws Exception { // Identify the objects to be used Object child = digester.peek(0); Object parent = digester.peek(1); boolean context = false; NamingResourcesImpl namingResources = null; if (parent instanceof Context) { namingResources = ((Context) parent).getNamingResources(); context = true; } else { namingResources = (NamingResourcesImpl) parent; } // Call the specified method IntrospectionUtils.callMethod1(namingResources, methodName, child, paramType, digester.getClassLoader()); StringBuilder code = digester.getGeneratedCode(); if (code != null) { if (context) { code.append(digester.toVariableName(parent)).append(".getNamingResources()"); } else { code.append(digester.toVariableName(namingResources)); } code.append(".").append(methodName).append('('); code.append(digester.toVariableName(child)).append(");"); code.append(System.lineSeparator()); } } /** * Render a printable version of this Rule. */ @Override public String toString() { StringBuilder sb = new StringBuilder("SetNextRule["); sb.append("methodName="); sb.append(methodName); sb.append(", paramType="); sb.append(paramType); sb.append(']'); return sb.toString(); } }




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