| /* $Id$ |
| * |
| * Copyright 2003-2004 The Apache Software Foundation. |
| * |
| * Licensed 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.tomcat.util.digester; |
| |
| |
| import org.xml.sax.Attributes; |
| |
| /** |
| * <p>Rule implementation that saves a parameter containing the |
| * <code>Digester</code> matching path for use by a surrounding |
| * <code>CallMethodRule</code>. This Rule is most useful when making |
| * extensive use of wildcards in rule patterns.</p> |
| * |
| * @since 1.6 |
| */ |
| |
| public class PathCallParamRule extends Rule { |
| |
| // ----------------------------------------------------------- Constructors |
| |
| /** |
| * Construct a "call parameter" rule that will save the body text of this |
| * element as the parameter value. |
| * |
| * @param paramIndex The zero-relative parameter number |
| */ |
| public PathCallParamRule(int paramIndex) { |
| |
| this.paramIndex = paramIndex; |
| |
| } |
| |
| // ----------------------------------------------------- Instance Variables |
| |
| /** |
| * The zero-relative index of the parameter we are saving. |
| */ |
| protected int paramIndex = 0; |
| |
| // --------------------------------------------------------- Public Methods |
| |
| |
| /** |
| * Process the start 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 |
| * @param attributes The attribute list for this element |
| |
| */ |
| public void begin(String namespace, String name, Attributes attributes) throws Exception { |
| |
| String param = getDigester().getMatch(); |
| |
| if(param != null) { |
| Object parameters[] = (Object[]) digester.peekParams(); |
| parameters[paramIndex] = param; |
| } |
| |
| } |
| |
| /** |
| * Render a printable version of this Rule. |
| */ |
| public String toString() { |
| |
| StringBuffer sb = new StringBuffer("PathCallParamRule["); |
| sb.append("paramIndex="); |
| sb.append(paramIndex); |
| sb.append("]"); |
| return (sb.toString()); |
| |
| } |
| } |