001// Copyright 2005 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.tapestry.services.impl; 016 017import org.apache.hivemind.Location; 018import org.apache.hivemind.Resource; 019import org.apache.hivemind.util.Defense; 020import org.apache.tapestry.IAsset; 021import org.apache.tapestry.asset.AssetSource; 022import org.apache.tapestry.engine.ISpecificationSource; 023import org.apache.tapestry.services.NamespaceResources; 024import org.apache.tapestry.spec.IComponentSpecification; 025import org.apache.tapestry.spec.ILibrarySpecification; 026 027/** 028 * Implementation of {@link org.apache.tapestry.services.NamespaceResources}. 029 * 030 * @author Howard M. Lewis Ship 031 */ 032public class NamespaceResourcesImpl implements NamespaceResources 033{ 034 private final ISpecificationSource _specificationSource; 035 036 private final AssetSource _assetSource; 037 038 public NamespaceResourcesImpl(ISpecificationSource source, AssetSource assetSource) 039 { 040 Defense.notNull(source, "source"); 041 Defense.notNull(assetSource, "assetSource"); 042 043 _specificationSource = source; 044 _assetSource = assetSource; 045 } 046 047 public ILibrarySpecification findChildLibrarySpecification(Resource parentResource, 048 String path, Location location) 049 { 050 Resource childResource = findSpecificationResource(parentResource, path, location); 051 052 return _specificationSource.getLibrarySpecification(childResource); 053 054 } 055 056 private Resource findSpecificationResource(Resource libraryResource, String path, 057 Location location) 058 { 059 // TODO: This is where we'll play with assets and asset prefixes 060 061 IAsset childAsset = _assetSource.findAsset(libraryResource, path, null, location); 062 063 Resource childResource = childAsset.getResourceLocation(); 064 065 return childResource; 066 } 067 068 public IComponentSpecification getPageSpecification(Resource resource, 069 String specificationPath, Location location) 070 { 071 Resource pageSpecificationResource = findSpecificationResource( 072 resource, 073 specificationPath, 074 location); 075 076 return _specificationSource.getPageSpecification(pageSpecificationResource); 077 } 078 079 public IComponentSpecification getComponentSpecification(Resource resource, 080 String specificationPath, Location location) 081 { 082 Resource componentSpecificationResource = findSpecificationResource( 083 resource, 084 specificationPath, 085 location); 086 087 return _specificationSource.getComponentSpecification(componentSpecificationResource); 088 } 089 090}