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
015package org.apache.tapestry5.internal.services;
016
017import org.apache.tapestry5.SymbolConstants;
018import org.apache.tapestry5.commons.Resource;
019import org.apache.tapestry5.internal.parser.ComponentTemplate;
020import org.apache.tapestry5.ioc.Invokable;
021import org.apache.tapestry5.ioc.OperationTracker;
022import org.apache.tapestry5.ioc.annotations.Symbol;
023
024import java.net.URL;
025import 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 */
034public 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(String.format("Template resource %s does not exist.", 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}