| /* |
| * Copyright 1999-2004 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.cocoon.matching; |
| |
| import org.apache.avalon.framework.parameters.Parameters; |
| import org.apache.cocoon.sitemap.PatternException; |
| |
| import java.util.Map; |
| |
| /** |
| * A matcher that can prepare patterns during sitemap setup for faster match at request time. |
| * This is also a regular matcher, meaning the sitemap can decide either to prepare the pattern |
| * or to match with a request-time evaluated pattern (for {..} substitution). |
| * |
| * @author <a href="mailto:sylvain@apache.org">Sylvain Wallez</a> |
| * @version CVS $Id: PreparableMatcher.java,v 1.4 2004/03/05 13:02:56 bdelacretaz Exp $ |
| */ |
| public interface PreparableMatcher extends Matcher { |
| |
| /** |
| * Prepares a pattern in a form that allows faster match. For example, a regular |
| * expression matcher can precompile the expression and return the corresponding |
| * object. This method is called once for each pattern used with a particular matcher |
| * class. The returned value is then passed back as the <code>preparedPattern</code> |
| * parameter of {@link #preparedMatch(Object, Map, Parameters)}. |
| * |
| * @param pattern The pattern to prepare. Depending on the implementation the pattern |
| * can contain wildcards or regular expressions. |
| * @return an optimized representation of the pattern. |
| * @throws PatternException if the pattern couldn't be prepared. |
| */ |
| Object preparePattern(String pattern) throws PatternException; |
| |
| /** |
| * Matches the prepared pattern against some values in the object model (most often the |
| * <code>Request</code>) and returns a <code>Map</code> object with replacements |
| * for wildcards contained in the pattern. |
| * |
| * @param preparedPattern The preparedPattern to match against, as returned by {@link #preparePattern(String)}. |
| * @param objectModel The <code>Map</code> with objects of the calling environment |
| * which can be used to select values this matchers matches against. |
| * @return a <code>Map</code> object with replacements for wildcards/regular-expressions |
| * contained in the pattern. If the return value is null there was no match. |
| */ |
| Map preparedMatch(Object preparedPattern, Map objectModel, Parameters parameters) throws PatternException; |
| } |
| |
| |
| |