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Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
ServiceMapImpl.java | 100% | 100% | 100% | 100% |
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1 | // Copyright 2004, 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.services.impl; | |
16 | ||
17 | import java.util.HashMap; | |
18 | import java.util.Iterator; | |
19 | import java.util.List; | |
20 | import java.util.Map; | |
21 | ||
22 | import org.apache.hivemind.ApplicationRuntimeException; | |
23 | import org.apache.hivemind.ErrorLog; | |
24 | import org.apache.tapestry.engine.IEngineService; | |
25 | import org.apache.tapestry.services.ServiceMap; | |
26 | ||
27 | /** | |
28 | * Implementation of {@link org.apache.tapestry.services.ServiceMap} | |
29 | * | |
30 | * @author Howard Lewis Ship | |
31 | * @since 4.0 | |
32 | */ | |
33 | public class ServiceMapImpl implements ServiceMap, EngineServiceSource | |
34 | { | |
35 | /** | |
36 | * List of {@link EngineServiceContribution}. | |
37 | */ | |
38 | private List _applicationServices; | |
39 | ||
40 | /** | |
41 | * List of {@link EngineServiceContribution}. | |
42 | */ | |
43 | private List _factoryServices; | |
44 | ||
45 | private ErrorLog _errorLog; | |
46 | ||
47 | /** | |
48 | * Map of {@link EngineServiceContribution} keyed on String name. | |
49 | */ | |
50 | private Map _services; | |
51 | ||
52 | /** | |
53 | * Map of {@link org.apache.tapestry.services.impl.EngineServiceOuterProxy}, keyed on String | |
54 | * name. | |
55 | */ | |
56 | ||
57 | private Map _proxies = new HashMap(); | |
58 | ||
59 | 47 | public void initializeService() |
60 | { | |
61 | 47 | Map factoryMap = buildServiceMap(_factoryServices); |
62 | 47 | Map applicationMap = buildServiceMap(_applicationServices); |
63 | ||
64 | // Add services from the applicationMap to factoryMap, overwriting | |
65 | // factoryMap entries with the same name. | |
66 | ||
67 | 47 | factoryMap.putAll(applicationMap); |
68 | ||
69 | 47 | _services = factoryMap; |
70 | } | |
71 | ||
72 | 94 | private Map buildServiceMap(List services) |
73 | { | |
74 | 94 | Map result = new HashMap(); |
75 | ||
76 | 94 | Iterator i = services.iterator(); |
77 | 94 | while (i.hasNext()) |
78 | { | |
79 | 336 | EngineServiceContribution contribution = (EngineServiceContribution) i.next(); |
80 | 336 | String name = contribution.getName(); |
81 | ||
82 | 336 | EngineServiceContribution existing = (EngineServiceContribution) result.get(name); |
83 | ||
84 | 336 | if (existing != null) |
85 | { | |
86 | 1 | _errorLog.error( |
87 | ImplMessages.dupeService(name, existing), | |
88 | existing.getLocation(), | |
89 | null); | |
90 | 1 | continue; |
91 | } | |
92 | ||
93 | 335 | result.put(name, contribution); |
94 | } | |
95 | ||
96 | 94 | return result; |
97 | } | |
98 | ||
99 | 312 | public synchronized IEngineService getService(String name) |
100 | { | |
101 | 312 | IEngineService result = (IEngineService) _proxies.get(name); |
102 | ||
103 | 312 | if (result == null) |
104 | { | |
105 | 146 | result = buildProxy(name); |
106 | 145 | _proxies.put(name, result); |
107 | } | |
108 | ||
109 | 311 | return result; |
110 | } | |
111 | ||
112 | /** | |
113 | * This returns the actual service, not the outer proxy. | |
114 | */ | |
115 | ||
116 | 130 | public IEngineService resolveEngineService(String name) |
117 | { | |
118 | 130 | EngineServiceContribution contribution = (EngineServiceContribution) _services.get(name); |
119 | ||
120 | 130 | if (contribution == null) |
121 | 1 | throw new ApplicationRuntimeException(ImplMessages.noSuchService(name)); |
122 | ||
123 | 129 | IEngineService service = contribution.getService(); |
124 | 129 | String serviceName = service.getName(); |
125 | ||
126 | 129 | if (!serviceName.equals(name)) |
127 | 1 | throw new ApplicationRuntimeException(ImplMessages.serviceNameMismatch( |
128 | service, | |
129 | name, | |
130 | serviceName), contribution.getLocation(), null); | |
131 | ||
132 | 128 | return service; |
133 | } | |
134 | ||
135 | 146 | private IEngineService buildProxy(String name) |
136 | { | |
137 | 146 | if (!_services.containsKey(name)) |
138 | 1 | throw new ApplicationRuntimeException(ImplMessages.noSuchService(name)); |
139 | ||
140 | 145 | EngineServiceOuterProxy outer = new EngineServiceOuterProxy(name); |
141 | ||
142 | 145 | EngineServiceInnerProxy inner = new EngineServiceInnerProxy(name, outer, this); |
143 | ||
144 | 145 | outer.installDelegate(inner); |
145 | ||
146 | 145 | return outer; |
147 | } | |
148 | ||
149 | 47 | public void setApplicationServices(List applicationServices) |
150 | { | |
151 | 47 | _applicationServices = applicationServices; |
152 | } | |
153 | ||
154 | 47 | public void setFactoryServices(List factoryServices) |
155 | { | |
156 | 47 | _factoryServices = factoryServices; |
157 | } | |
158 | ||
159 | 42 | public void setErrorLog(ErrorLog errorLog) |
160 | { | |
161 | 42 | _errorLog = errorLog; |
162 | } | |
163 | } |
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