    001    // Copyright 2006, 2007, 2008, 2009, 2010, 2011 The Apache Software Foundation
    002    //
    003    // Licensed under the Apache License, Version 2.0 (the "License");
    004    // you may not use this file except in compliance with the License.
    005    // You may obtain a copy of the License at
    006    //
    007    // http://www.apache.org/licenses/LICENSE-2.0
    008    //
    009    // Unless required by applicable law or agreed to in writing, software
    010    // distributed under the License is distributed on an "AS IS" BASIS,
    011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    012    // See the License for the specific language governing permissions and
    013    // limitations under the License.
    014
    015    package org.apache.tapestry5.internal.services;
    016
    017    import org.apache.tapestry5.SymbolConstants;
    018    import org.apache.tapestry5.internal.parser.ComponentTemplate;
    019    import org.apache.tapestry5.ioc.Invokable;
    020    import org.apache.tapestry5.ioc.OperationTracker;
    021    import org.apache.tapestry5.ioc.Resource;
    022    import org.apache.tapestry5.ioc.annotations.Symbol;
    023
    024    import java.net.URL;
    025    import java.util.Map;
    026
    027    /**
    028     * Parses Tapestry XML template files into {@link ComponentTemplate} instances.
    029     * A new instance of {@link SaxTemplateParser} is created for each document
    030     * parsed.
    031     *
    032     * @since 5.1.0.0
    033     */
    034    public class TemplateParserImpl implements TemplateParser
    035    {
    036        private final Map<String, URL> configuration;
    037
    038        private final boolean defaultCompressWhitespace;
    039
    040        private final OperationTracker tracker;
    041
    042        public TemplateParserImpl(Map<String, URL> configuration,
    043
    044                                  @Symbol(SymbolConstants.COMPRESS_WHITESPACE)
    045                                  boolean defaultCompressWhitespace, OperationTracker tracker)
    046        {
    047            this.configuration = configuration;
    048            this.defaultCompressWhitespace = defaultCompressWhitespace;
    049            this.tracker = tracker;
    050        }
    051
    052        public ComponentTemplate parseTemplate(final Resource templateResource)
    053        {
    054            if (!templateResource.exists())
    055                throw new RuntimeException(ServicesMessages.missingTemplateResource(templateResource));
    056
    057            return tracker.invoke("Parsing component template " + templateResource, new Invokable<ComponentTemplate>()
    058            {
    059                public ComponentTemplate invoke()
    060                {
    061                    return new SaxTemplateParser(templateResource, configuration).parse(defaultCompressWhitespace);
    062                }
    063            });
    064        }
    065
    066        public Map<String, URL> getDTDURLMappings()
    067        {
    068            return configuration;
    069        }
    070    }