|
|||||||||||||||||||
30 day Evaluation License registered to hlship@comcast.net Your 30 day evaluation period has expired. Please visit http://www.cenqua.com to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
AssetSourceImpl.java | 100% | 100% | 100% | 100% |
|
1 | // Copyright 2005 The Apache Software Foundation | |
2 | // | |
3 | // Licensed under the Apache License, Version 2.0 (the "License"); | |
4 | // you may not use this file except in compliance with the License. | |
5 | // You may obtain a copy of the License at | |
6 | // | |
7 | // http://www.apache.org/licenses/LICENSE-2.0 | |
8 | // | |
9 | // Unless required by applicable law or agreed to in writing, software | |
10 | // distributed under the License is distributed on an "AS IS" BASIS, | |
11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 | // See the License for the specific language governing permissions and | |
13 | // limitations under the License. | |
14 | ||
15 | package org.apache.tapestry.asset; | |
16 | ||
17 | import java.util.HashMap; | |
18 | import java.util.Iterator; | |
19 | import java.util.List; | |
20 | import java.util.Locale; | |
21 | import java.util.Map; | |
22 | ||
23 | import org.apache.hivemind.Location; | |
24 | import org.apache.hivemind.Resource; | |
25 | import org.apache.hivemind.util.Defense; | |
26 | import org.apache.tapestry.IAsset; | |
27 | ||
28 | /** | |
29 | * Implementation of the {@link org.apache.tapestry.asset.AssetSource}service interface. | |
30 | * | |
31 | * @author Howard M. Lewis Ship | |
32 | * @since 4.0 | |
33 | */ | |
34 | public class AssetSourceImpl implements AssetSource | |
35 | { | |
36 | private Map _assetFactoryByPrefix = new HashMap(); | |
37 | ||
38 | private List _contributions; | |
39 | ||
40 | private AssetFactory _defaultAssetFactory; | |
41 | ||
42 | private AssetFactory _lookupAssetFactory; | |
43 | ||
44 | 27 | public void initializeService() |
45 | { | |
46 | 27 | Iterator i = _contributions.iterator(); |
47 | 27 | while (i.hasNext()) |
48 | { | |
49 | 53 | AssetFactoryContribution c = (AssetFactoryContribution) i.next(); |
50 | ||
51 | 53 | _assetFactoryByPrefix.put(c.getPrefix(), c.getFactory()); |
52 | } | |
53 | } | |
54 | ||
55 | 60 | public IAsset findAsset(Resource base, String path, Locale locale, Location location) |
56 | { | |
57 | 60 | Defense.notNull(base, "base"); |
58 | 60 | Defense.notNull(path, "path"); |
59 | 60 | Defense.notNull(locale, "locale"); |
60 | 60 | Defense.notNull(location, "location"); |
61 | ||
62 | 60 | int colonx = path.indexOf(':'); |
63 | ||
64 | 60 | if (colonx < 0) |
65 | 46 | return _lookupAssetFactory.createAsset(base, path, locale, location); |
66 | ||
67 | 14 | String prefix = path.substring(0, colonx); |
68 | 14 | String truePath = path.substring(colonx + 1); |
69 | ||
70 | 14 | AssetFactory factory = (AssetFactory) _assetFactoryByPrefix.get(prefix); |
71 | ||
72 | // Unknown prefix is expected to happen when an external asset (using an established | |
73 | // prefix such as http:) is referenced. | |
74 | ||
75 | 14 | if (factory == null) |
76 | { | |
77 | 2 | factory = _defaultAssetFactory; |
78 | ||
79 | // Path is the full path, including the prefix (which is really the scheme | |
80 | // of the URL). | |
81 | ||
82 | 2 | truePath = path; |
83 | } | |
84 | ||
85 | 14 | return factory.createAsset(base, truePath, locale, location); |
86 | } | |
87 | ||
88 | /** | |
89 | * Factory used when the path has no prefix, and the type of asset must be inferred from the | |
90 | * type of resource. | |
91 | */ | |
92 | ||
93 | 27 | public void setLookupAssetFactory(AssetFactory lookupAssetFactory) |
94 | { | |
95 | 27 | _lookupAssetFactory = lookupAssetFactory; |
96 | } | |
97 | ||
98 | /** | |
99 | * List of {@link org.apache.tapestry.asset.AssetFactoryContribution}. | |
100 | */ | |
101 | ||
102 | 27 | public void setContributions(List contributions) |
103 | { | |
104 | 27 | _contributions = contributions; |
105 | } | |
106 | ||
107 | /** | |
108 | * Factory used when an unrecognized prefix (typically, an arbitrary URL's scheme) is provided. | |
109 | */ | |
110 | ||
111 | 27 | public void setDefaultAssetFactory(AssetFactory defaultAssetFactory) |
112 | { | |
113 | 27 | _defaultAssetFactory = defaultAssetFactory; |
114 | } | |
115 | ||
116 | } |
|