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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.tomcat.util.digester.Digester;
import org.apache.tomcat.util.digester.RuleSet;

/**
 * 

RuleSet for processing the contents of a * CredentialHandler definition element. This RuleSet supports * CredentialHandler such as the NestedCredentialHandler that used * nested CredentialHandlers.

*/ public class CredentialHandlerRuleSet implements RuleSet { private static final int MAX_NESTED_LEVELS = Integer.getInteger( "org.apache.catalina.startup.CredentialHandlerRuleSet.MAX_NESTED_LEVELS", 3).intValue(); // ----------------------------------------------------- Instance Variables /** * The matching pattern prefix to use for recognizing our elements. */ protected final String prefix; // ------------------------------------------------------------ Constructor /** * Construct an instance of this RuleSet with the default * matching pattern prefix. */ public CredentialHandlerRuleSet() { this(""); } /** * Construct an instance of this RuleSet with the specified * matching pattern prefix. * * @param prefix Prefix for matching pattern rules (including the * trailing slash character) */ public CredentialHandlerRuleSet(String prefix) { this.prefix = prefix; } // --------------------------------------------------------- Public Methods /** *

Add the set of Rule instances defined in this RuleSet to the * specified Digester instance, associating them with * our namespace URI (if any). This method should only be called * by a Digester instance.

* * @param digester Digester instance to which the new Rule instances * should be added. */ @Override public void addRuleInstances(Digester digester) { StringBuilder pattern = new StringBuilder(prefix); for (int i = 0; i < MAX_NESTED_LEVELS; i++) { if (i > 0) { pattern.append('/'); } pattern.append("CredentialHandler"); addRuleInstances(digester, pattern.toString(), i == 0 ? "setCredentialHandler" : "addCredentialHandler"); } } private void addRuleInstances(Digester digester, String pattern, String methodName) { digester.addObjectCreate(pattern, null /* MUST be specified in the element */, "className"); digester.addSetProperties(pattern); digester.addSetNext(pattern, methodName, "org.apache.catalina.CredentialHandler"); } }




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