    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}