1 | |
|
2 | |
|
3 | |
|
4 | |
|
5 | |
|
6 | |
|
7 | |
|
8 | |
|
9 | |
|
10 | |
|
11 | |
|
12 | |
|
13 | |
|
14 | |
|
15 | |
|
16 | |
package org.seasar.cubby.plugins.guice; |
17 | |
|
18 | |
import java.util.ArrayList; |
19 | |
import java.util.List; |
20 | |
|
21 | |
import javax.servlet.ServletContext; |
22 | |
|
23 | |
import org.seasar.cubby.plugin.AbstractPlugin; |
24 | |
import org.seasar.cubby.spi.BeanDescProvider; |
25 | |
import org.seasar.cubby.spi.ContainerProvider; |
26 | |
import org.seasar.cubby.spi.ConverterProvider; |
27 | |
import org.seasar.cubby.spi.PathResolverProvider; |
28 | |
import org.seasar.cubby.spi.Provider; |
29 | |
import org.seasar.cubby.spi.RequestParserProvider; |
30 | |
|
31 | |
import com.google.inject.Guice; |
32 | |
import com.google.inject.Injector; |
33 | |
import com.google.inject.Module; |
34 | |
|
35 | |
|
36 | |
|
37 | |
|
38 | |
|
39 | |
|
40 | |
|
41 | |
|
42 | |
|
43 | |
|
44 | |
|
45 | |
|
46 | |
|
47 | |
|
48 | |
|
49 | |
|
50 | |
|
51 | |
|
52 | |
|
53 | |
|
54 | |
|
55 | |
|
56 | |
|
57 | |
|
58 | |
|
59 | |
|
60 | |
|
61 | |
|
62 | |
|
63 | |
|
64 | |
|
65 | |
|
66 | |
|
67 | |
public class GuicePlugin extends AbstractPlugin { |
68 | |
|
69 | |
|
70 | |
public static final String MODULE_INIT_PARAM_NAME = "cubby.guice.module"; |
71 | |
|
72 | |
|
73 | |
private Injector injector; |
74 | |
|
75 | |
|
76 | |
|
77 | |
|
78 | 3 | public GuicePlugin() { |
79 | 3 | support(BeanDescProvider.class); |
80 | 3 | support(ContainerProvider.class); |
81 | 3 | support(RequestParserProvider.class); |
82 | 3 | support(PathResolverProvider.class); |
83 | 3 | support(ConverterProvider.class); |
84 | 3 | } |
85 | |
|
86 | |
|
87 | |
|
88 | |
|
89 | |
@Override |
90 | |
public void initialize(final ServletContext servletContext) |
91 | |
throws Exception { |
92 | 3 | super.initialize(servletContext); |
93 | 3 | final String moduleClassNames = servletContext |
94 | |
.getInitParameter(MODULE_INIT_PARAM_NAME); |
95 | 3 | if (moduleClassNames == null) { |
96 | 0 | throw new IllegalModuleException("No context parameter \"" |
97 | |
+ MODULE_INIT_PARAM_NAME + "\", please set Module FQCN"); |
98 | |
} |
99 | |
|
100 | 3 | final List<Module> modules = new ArrayList<Module>(); |
101 | 6 | for (final String moduleClassName : moduleClassNames.split(",")) { |
102 | 3 | final Module module = createModule(moduleClassName.trim()); |
103 | 3 | modules.add(module); |
104 | |
} |
105 | 3 | this.injector = Guice.createInjector(modules); |
106 | 3 | } |
107 | |
|
108 | |
|
109 | |
|
110 | |
|
111 | |
public <S extends Provider> S getProvider(final Class<S> service) { |
112 | 9 | if (this.isSupport(service)) { |
113 | 9 | return service.cast(injector.getInstance(service)); |
114 | |
} else { |
115 | 0 | return null; |
116 | |
} |
117 | |
} |
118 | |
|
119 | |
|
120 | |
|
121 | |
|
122 | |
|
123 | |
|
124 | |
|
125 | |
|
126 | |
protected Module createModule(final String moduleClassName) { |
127 | 3 | final ClassLoader loader = Thread.currentThread() |
128 | |
.getContextClassLoader(); |
129 | |
try { |
130 | 3 | final Class<?> clazz = Class.forName(moduleClassName, true, loader); |
131 | 3 | final Module module = Module.class.cast(clazz.newInstance()); |
132 | 3 | return module; |
133 | 0 | } catch (final ClassNotFoundException e) { |
134 | 0 | throw new IllegalArgumentException("Illegal module " |
135 | |
+ moduleClassName, e); |
136 | 0 | } catch (final InstantiationException e) { |
137 | 0 | throw new IllegalArgumentException("Illegal module " |
138 | |
+ moduleClassName, e); |
139 | 0 | } catch (final IllegalAccessException e) { |
140 | 0 | throw new IllegalArgumentException("Illegal module " |
141 | |
+ moduleClassName, e); |
142 | |
} |
143 | |
} |
144 | |
|
145 | |
|
146 | |
|
147 | |
|
148 | |
|
149 | |
|
150 | |
public Injector getInjector() { |
151 | 3 | return injector; |
152 | |
} |
153 | |
|
154 | |
} |