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package org.seasar.cubby.plugins.guice; |
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import java.util.ArrayList; |
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import java.util.List; |
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import javax.servlet.ServletContext; |
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import org.seasar.cubby.plugin.AbstractPlugin; |
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import org.seasar.cubby.spi.BeanDescProvider; |
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import org.seasar.cubby.spi.ContainerProvider; |
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import org.seasar.cubby.spi.ConverterProvider; |
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import org.seasar.cubby.spi.PathResolverProvider; |
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import org.seasar.cubby.spi.Provider; |
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import org.seasar.cubby.spi.RequestParserProvider; |
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import com.google.inject.Guice; |
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import com.google.inject.Injector; |
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import com.google.inject.Module; |
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public class GuicePlugin extends AbstractPlugin { |
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public static final String MODULE_INIT_PARAM_NAME = "cubby.guice.module"; |
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private Injector injector; |
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81 | 1 | public GuicePlugin() { |
82 | 1 | support(BeanDescProvider.class); |
83 | 1 | support(ContainerProvider.class); |
84 | 1 | support(RequestParserProvider.class); |
85 | 1 | support(PathResolverProvider.class); |
86 | 1 | support(ConverterProvider.class); |
87 | 1 | } |
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@Override |
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public void initialize(final ServletContext servletContext) { |
94 | 1 | final String moduleClassNames = servletContext |
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.getInitParameter(MODULE_INIT_PARAM_NAME); |
96 | 1 | if (moduleClassNames == null) { |
97 | 0 | throw new IllegalModuleException("No context parameter \"" |
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+ MODULE_INIT_PARAM_NAME + "\", please set Module FQCN"); |
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} |
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101 | 1 | final List<Module> modules = new ArrayList<Module>(); |
102 | 2 | for (final String moduleClassName : moduleClassNames.split(",")) { |
103 | 1 | final Module module = createModule(moduleClassName.trim()); |
104 | 1 | modules.add(module); |
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} |
106 | 1 | this.injector = Guice.createInjector(modules.toArray(new Module[0])); |
107 | 1 | } |
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public <S extends Provider> S getProvider(final Class<S> service) { |
113 | 1 | if (this.isSupport(service)) { |
114 | 1 | return service.cast(injector.getInstance(service)); |
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} else { |
116 | 0 | return null; |
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} |
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} |
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public void setInjector(final Injector injector) { |
127 | 0 | this.injector = injector; |
128 | 0 | } |
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protected Module createModule(final String moduleClassName) { |
138 | 1 | final ClassLoader loader = Thread.currentThread() |
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.getContextClassLoader(); |
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try { |
141 | 1 | final Class<?> clazz = Class.forName(moduleClassName, true, loader); |
142 | 1 | final Module module = Module.class.cast(clazz.newInstance()); |
143 | 1 | return module; |
144 | 0 | } catch (final ClassNotFoundException e) { |
145 | 0 | throw new IllegalArgumentException("Illegal module " |
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+ moduleClassName, e); |
147 | 0 | } catch (final InstantiationException e) { |
148 | 0 | throw new IllegalArgumentException("Illegal module " |
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+ moduleClassName, e); |
150 | 0 | } catch (final IllegalAccessException e) { |
151 | 0 | throw new IllegalArgumentException("Illegal module " |
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+ moduleClassName, e); |
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} |
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} |
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} |