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package org.apache.myfaces.config.annotation; |
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import org.apache.commons.logging.Log; |
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import org.apache.commons.logging.LogFactory; |
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import org.apache.commons.discovery.resource.ClassLoaders; |
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import org.apache.commons.discovery.resource.names.DiscoverServiceNames; |
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import org.apache.commons.discovery.ResourceNameIterator; |
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import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFWebConfigParam; |
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import org.apache.myfaces.shared_impl.util.ClassUtils; |
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import javax.faces.context.ExternalContext; |
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import javax.naming.Context; |
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import javax.naming.InitialContext; |
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import javax.naming.NamingException; |
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import java.lang.reflect.InvocationTargetException; |
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import java.lang.reflect.Constructor; |
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public class DefaultLifecycleProviderFactory extends LifecycleProviderFactory { |
41 | 0 | private static Log log = LogFactory.getLog(DefaultLifecycleProviderFactory.class); |
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private static LifecycleProvider LIFECYCLE_PROVIDER_INSTANCE; |
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|
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@JSFWebConfigParam(name="org.apache.myfaces.config.annotation.LifecycleProvider", since="1.1") |
45 | 0 | public static final String LIFECYCLE_PROVIDER = LifecycleProvider.class.getName(); |
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public DefaultLifecycleProviderFactory() |
49 | 0 | { |
50 | 0 | } |
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public LifecycleProvider getLifecycleProvider(ExternalContext externalContext) |
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{ |
54 | 0 | if (LIFECYCLE_PROVIDER_INSTANCE == null) |
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{ |
56 | 0 | if (externalContext == null) |
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{ |
58 | 0 | log.info("No ExternalContext using fallback LifecycleProvider."); |
59 | 0 | resolveFallbackLifecycleProvider(); |
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} |
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else |
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{ |
63 | 0 | if (!resolveLifecycleProviderFromExternalContext(externalContext)) |
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{ |
65 | 0 | if (!resolveLifecycleProviderFromService(externalContext)) |
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{ |
67 | 0 | resolveFallbackLifecycleProvider(); |
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} |
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} |
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} |
71 | 0 | log.info("Using LifecycleProvider "+ LIFECYCLE_PROVIDER_INSTANCE.getClass().getName()); |
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} |
73 | 0 | return LIFECYCLE_PROVIDER_INSTANCE; |
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} |
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public void release() { |
77 | 0 | LIFECYCLE_PROVIDER_INSTANCE = null; |
78 | 0 | } |
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private boolean resolveLifecycleProviderFromExternalContext(ExternalContext externalContext) |
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{ |
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try |
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{ |
86 | 0 | String lifecycleProvider = externalContext.getInitParameter(LIFECYCLE_PROVIDER); |
87 | 0 | if (lifecycleProvider != null) |
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{ |
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|
90 | 0 | Object obj = createClass(lifecycleProvider, externalContext); |
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|
92 | 0 | if (obj instanceof LifecycleProvider) { |
93 | 0 | LIFECYCLE_PROVIDER_INSTANCE = (LifecycleProvider) obj; |
94 | 0 | return true; |
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} |
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} |
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} |
98 | 0 | catch (ClassNotFoundException e) |
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{ |
100 | 0 | log.error("", e); |
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} |
102 | 0 | catch (InstantiationException e) |
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{ |
104 | 0 | log.error("", e); |
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} |
106 | 0 | catch (IllegalAccessException e) |
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{ |
108 | 0 | log.error("", e); |
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} |
110 | 0 | catch (InvocationTargetException e) |
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{ |
112 | 0 | log.error("", e); |
113 | 0 | } |
114 | 0 | return false; |
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} |
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|
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private boolean resolveLifecycleProviderFromService(ExternalContext externalContext) { |
119 | 0 | ClassLoader classLoader = ClassUtils.getContextClassLoader(); |
120 | 0 | ClassLoaders loaders = new ClassLoaders(); |
121 | 0 | loaders.put(classLoader); |
122 | 0 | loaders.put(this.getClass().getClassLoader()); |
123 | 0 | DiscoverServiceNames dsn = new DiscoverServiceNames(loaders); |
124 | 0 | ResourceNameIterator iter = dsn.findResourceNames(LIFECYCLE_PROVIDER); |
125 | 0 | while (iter.hasNext()) { |
126 | 0 | String className = iter.nextResourceName(); |
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try |
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{ |
129 | 0 | Object obj = createClass(className, externalContext); |
130 | 0 | if (DiscoverableLifecycleProvider.class.isAssignableFrom(obj.getClass())) { |
131 | 0 | DiscoverableLifecycleProvider discoverableLifecycleProvider = |
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(DiscoverableLifecycleProvider) obj; |
133 | 0 | if (discoverableLifecycleProvider.isAvailable()) { |
134 | 0 | LIFECYCLE_PROVIDER_INSTANCE = discoverableLifecycleProvider; |
135 | 0 | return true; |
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} |
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} |
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} |
139 | 0 | catch (ClassNotFoundException e) |
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{ |
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|
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} |
143 | 0 | catch (NoClassDefFoundError e) |
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{ |
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|
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} |
147 | 0 | catch (InstantiationException e) |
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{ |
149 | 0 | log.error("", e); |
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} |
151 | 0 | catch (IllegalAccessException e) |
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{ |
153 | 0 | log.error("", e); |
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} |
155 | 0 | catch (InvocationTargetException e) |
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{ |
157 | 0 | log.error("", e); |
158 | 0 | } |
159 | 0 | } |
160 | 0 | return false; |
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} |
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|
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private Object createClass(String className, ExternalContext externalContext) |
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throws InstantiationException, IllegalAccessException, InvocationTargetException, ClassNotFoundException |
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{ |
166 | 0 | Class clazz = ClassUtils.classForName(className); |
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|
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Object obj; |
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try |
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{ |
171 | 0 | Constructor constructor = clazz.getConstructor(ExternalContext.class); |
172 | 0 | obj = constructor.newInstance(externalContext); |
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} |
174 | 0 | catch (NoSuchMethodException e) |
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{ |
176 | 0 | obj = clazz.newInstance(); |
177 | 0 | } |
178 | 0 | return obj; |
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} |
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|
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|
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private void resolveFallbackLifecycleProvider() |
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{ |
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try |
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{ |
186 | 0 | ClassUtils.classForName("javax.annotation.PreDestroy"); |
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} |
188 | 0 | catch (ClassNotFoundException e) |
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{ |
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|
191 | 0 | LIFECYCLE_PROVIDER_INSTANCE = new NoAnnotationLifecyleProvider(); |
192 | 0 | return; |
193 | 0 | } |
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Context context; |
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try |
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{ |
197 | 0 | context = new InitialContext(); |
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try |
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{ |
200 | 0 | ClassUtils.classForName("javax.ejb.EJB"); |
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|
202 | 0 | LIFECYCLE_PROVIDER_INSTANCE = new AllAnnotationLifecycleProvider(context); |
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} |
204 | 0 | catch (ClassNotFoundException e) |
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{ |
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|
207 | 0 | LIFECYCLE_PROVIDER_INSTANCE = new ResourceAnnotationLifecycleProvider(context); |
208 | 0 | } |
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} |
210 | 0 | catch (NamingException e) |
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{ |
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|
213 | 0 | LIFECYCLE_PROVIDER_INSTANCE = new NoInjectionAnnotationLifecycleProvider(); |
214 | 0 | log.error("No InitialContext found. Using NoInjectionAnnotationProcessor.", e); |
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|
216 | 0 | } |
217 | 0 | } |
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} |