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package org.apache.turbine.annotation; |
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import java.lang.annotation.Annotation; |
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import java.lang.reflect.AccessibleObject; |
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import java.lang.reflect.Field; |
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import java.util.List; |
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import java.util.concurrent.ConcurrentHashMap; |
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import java.util.concurrent.ConcurrentMap; |
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import org.apache.commons.configuration.Configuration; |
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import org.apache.commons.lang.StringUtils; |
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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.turbine.Turbine; |
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import org.apache.turbine.modules.Loader; |
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import org.apache.turbine.services.ServiceManager; |
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import org.apache.turbine.services.TurbineServices; |
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import org.apache.turbine.services.assemblerbroker.AssemblerBrokerService; |
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import org.apache.turbine.util.TurbineException; |
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| 47 | 0 | public class AnnotationProcessor |
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{ |
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| 50 | 33 | private static Log log = LogFactory.getLog(AnnotationProcessor.class); |
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| 53 | 33 | private static ConcurrentMap<String, Annotation[]> annotationCache = new ConcurrentHashMap<String, Annotation[]>(); |
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public static Annotation[] getAnnotations(AccessibleObject object) |
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{ |
| 64 | 3139 | String key = object.getClass() + object.toString(); |
| 65 | 3139 | Annotation[] annotations = annotationCache.get(key); |
| 66 | 3139 | if (annotations == null) |
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{ |
| 68 | 1562 | Annotation[] newAnnotations = object.getDeclaredAnnotations(); |
| 69 | 1562 | annotations = annotationCache.putIfAbsent(key, newAnnotations); |
| 70 | 1562 | if (annotations == null) |
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{ |
| 72 | 1562 | annotations = newAnnotations; |
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} |
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} |
| 75 | 3139 | return annotations; |
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} |
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public static void process(Object object) throws TurbineException |
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{ |
| 87 | 565 | ServiceManager manager = null; |
| 88 | 565 | Configuration config = null; |
| 89 | 565 | AssemblerBrokerService assembler = null; |
| 90 | 565 | Class<?> clazz = object.getClass(); |
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| 92 | 2336 | while (clazz != null) |
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{ |
| 94 | 1775 | Field[] fields = clazz.getDeclaredFields(); |
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| 96 | 4770 | for (Field field : fields) |
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{ |
| 98 | 2999 | Annotation[] annotations = getAnnotations(field); |
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| 100 | 3708 | for (Annotation a : annotations) |
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{ |
| 102 | 713 | if (a instanceof TurbineService) |
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{ |
| 104 | 156 | if (manager == null) |
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{ |
| 106 | 124 | manager = TurbineServices.getInstance(); |
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} |
| 108 | 156 | injectTurbineService(object, manager, field, (TurbineService) a); |
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} |
| 110 | 557 | else if (a instanceof TurbineConfiguration) |
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{ |
| 112 | 349 | if (config == null) |
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{ |
| 114 | 256 | config = Turbine.getConfiguration(); |
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} |
| 116 | 349 | injectTurbineConfiguration(object, config, field, (TurbineConfiguration) a); |
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} |
| 118 | 208 | else if (a instanceof TurbineLoader) |
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{ |
| 120 | 208 | if (assembler == null) |
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{ |
| 122 | 200 | assembler = (AssemblerBrokerService) TurbineServices.getInstance(). |
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getService(AssemblerBrokerService.SERVICE_NAME); |
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} |
| 125 | 208 | injectTurbineLoader(object, assembler, field, (TurbineLoader) a); |
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} |
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} |
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} |
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| 130 | 1771 | clazz = clazz.getSuperclass(); |
| 131 | 1771 | } |
| 132 | 561 | } |
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private static void injectTurbineLoader(Object object, AssemblerBrokerService assembler, Field field, TurbineLoader annotation) throws TurbineException |
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{ |
| 146 | 208 | Loader<?> loader = assembler.getLoader(annotation.value()); |
| 147 | 208 | field.setAccessible(true); |
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try |
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{ |
| 151 | 208 | if (log.isDebugEnabled()) |
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{ |
| 153 | 208 | log.debug("Injection of " + loader + " into object " + object); |
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} |
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| 156 | 208 | field.set(object, loader); |
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} |
| 158 | 0 | catch (IllegalArgumentException e) |
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{ |
| 160 | 0 | throw new TurbineException("Could not inject loader " |
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+ loader + " into object " + object, e); |
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} |
| 163 | 0 | catch (IllegalAccessException e) |
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{ |
| 165 | 0 | throw new TurbineException("Could not inject loader " |
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+ loader + " into object " + object, e); |
| 167 | 208 | } |
| 168 | 208 | } |
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private static void injectTurbineConfiguration(Object object, Configuration conf, Field field, TurbineConfiguration annotation) throws TurbineException |
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{ |
| 182 | 349 | Class<?> type = field.getType(); |
| 183 | 349 | String key = annotation.value(); |
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try |
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{ |
| 187 | 349 | if (Configuration.class.isAssignableFrom(type)) |
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{ |
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| 190 | 2 | if (StringUtils.isNotEmpty(key)) |
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{ |
| 192 | 1 | conf = conf.subset(key); |
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} |
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| 195 | 2 | if (log.isDebugEnabled()) |
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{ |
| 197 | 2 | log.debug("Injection of " + conf + " into object " + object); |
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} |
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| 200 | 2 | field.setAccessible(true); |
| 201 | 2 | field.set(object, conf); |
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} |
| 203 | 347 | else if (conf.containsKey(key)) |
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{ |
| 205 | 156 | if ( String.class.isAssignableFrom( type ) ) |
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{ |
| 207 | 134 | String value = conf.getString(key); |
| 208 | 134 | if (log.isDebugEnabled()) |
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{ |
| 210 | 134 | log.debug("Injection of " + value + " into object " + object); |
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} |
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| 213 | 134 | field.setAccessible(true); |
| 214 | 134 | field.set(object, value); |
| 215 | 134 | } |
| 216 | 22 | else if ( Boolean.TYPE.isAssignableFrom( type ) ) |
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{ |
| 218 | 19 | boolean value = conf.getBoolean(key); |
| 219 | 19 | if (log.isDebugEnabled()) |
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{ |
| 221 | 19 | log.debug("Injection of " + value + " into object " + object); |
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} |
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| 224 | 19 | field.setAccessible(true); |
| 225 | 19 | field.setBoolean(object, value); |
| 226 | 19 | } |
| 227 | 3 | else if ( Integer.TYPE.isAssignableFrom( type ) ) |
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{ |
| 229 | 2 | int value = conf.getInt(key); |
| 230 | 2 | if (log.isDebugEnabled()) |
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{ |
| 232 | 2 | log.debug("Injection of " + value + " into object " + object); |
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} |
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| 235 | 2 | field.setAccessible(true); |
| 236 | 2 | field.setInt(object, value); |
| 237 | 2 | } |
| 238 | 1 | else if ( Long.TYPE.isAssignableFrom( type ) ) |
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{ |
| 240 | 0 | long value = conf.getLong(key); |
| 241 | 0 | if (log.isDebugEnabled()) |
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{ |
| 243 | 0 | log.debug("Injection of " + value + " into object " + object); |
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} |
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| 246 | 0 | field.setAccessible(true); |
| 247 | 0 | field.setLong(object, value); |
| 248 | 0 | } |
| 249 | 1 | else if ( Short.TYPE.isAssignableFrom( type ) ) |
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{ |
| 251 | 0 | short value = conf.getShort(key); |
| 252 | 0 | if (log.isDebugEnabled()) |
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{ |
| 254 | 0 | log.debug("Injection of " + value + " into object " + object); |
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} |
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| 257 | 0 | field.setAccessible(true); |
| 258 | 0 | field.setShort(object, value); |
| 259 | 0 | } |
| 260 | 1 | else if ( Long.TYPE.isAssignableFrom( type ) ) |
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{ |
| 262 | 0 | long value = conf.getLong(key); |
| 263 | 0 | if (log.isDebugEnabled()) |
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{ |
| 265 | 0 | log.debug("Injection of " + value + " into object " + object); |
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} |
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| 268 | 0 | field.setAccessible(true); |
| 269 | 0 | field.setLong(object, value); |
| 270 | 0 | } |
| 271 | 1 | else if ( Float.TYPE.isAssignableFrom( type ) ) |
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{ |
| 273 | 0 | float value = conf.getFloat(key); |
| 274 | 0 | if (log.isDebugEnabled()) |
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{ |
| 276 | 0 | log.debug("Injection of " + value + " into object " + object); |
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} |
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| 279 | 0 | field.setAccessible(true); |
| 280 | 0 | field.setFloat(object, value); |
| 281 | 0 | } |
| 282 | 1 | else if ( Double.TYPE.isAssignableFrom( type ) ) |
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{ |
| 284 | 0 | double value = conf.getDouble(key); |
| 285 | 0 | if (log.isDebugEnabled()) |
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{ |
| 287 | 0 | log.debug("Injection of " + value + " into object " + object); |
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} |
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| 290 | 0 | field.setAccessible(true); |
| 291 | 0 | field.setDouble(object, value); |
| 292 | 0 | } |
| 293 | 1 | else if ( Byte.TYPE.isAssignableFrom( type ) ) |
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{ |
| 295 | 0 | byte value = conf.getByte(key); |
| 296 | 0 | if (log.isDebugEnabled()) |
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{ |
| 298 | 0 | log.debug("Injection of " + value + " into object " + object); |
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} |
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| 301 | 0 | field.setAccessible(true); |
| 302 | 0 | field.setByte(object, value); |
| 303 | 0 | } |
| 304 | 1 | else if ( List.class.isAssignableFrom( type ) ) |
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{ |
| 306 | 1 | List<Object> values = conf.getList(key); |
| 307 | 1 | if (log.isDebugEnabled()) |
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{ |
| 309 | 1 | log.debug("Injection of " + values + " into object " + object); |
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} |
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| 312 | 1 | field.setAccessible(true); |
| 313 | 1 | field.set(object, values); |
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} |
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} |
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} |
| 317 | 0 | catch (IllegalArgumentException e) |
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{ |
| 319 | 0 | throw new TurbineException("Could not inject configuration " |
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+ conf + " into object " + object, e); |
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} |
| 322 | 0 | catch (IllegalAccessException e) |
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{ |
| 324 | 0 | throw new TurbineException("Could not inject configuration " |
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+ conf + " into object " + object, e); |
| 326 | 349 | } |
| 327 | 349 | } |
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private static void injectTurbineService(Object object, ServiceManager manager, Field field, TurbineService annotation) throws TurbineException |
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{ |
| 341 | 156 | String serviceName = null; |
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| 343 | 156 | if (StringUtils.isNotEmpty(annotation.value())) |
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{ |
| 345 | 1 | serviceName = annotation.value(); |
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} |
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else |
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{ |
| 350 | 155 | Field[] typeFields = field.getType().getFields(); |
| 351 | 155 | for (Field f : typeFields) |
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{ |
| 353 | 155 | if (TurbineService.SERVICE_NAME.equals(f.getName())) |
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{ |
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try |
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{ |
| 357 | 138 | serviceName = (String)f.get(null); |
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} |
| 359 | 0 | catch (Exception e) |
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{ |
| 361 | 0 | continue; |
| 362 | 138 | } |
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break; |
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} |
| 365 | 17 | else if (TurbineService.ROLE.equals(f.getName())) |
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{ |
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try |
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{ |
| 369 | 17 | serviceName = (String)f.get(null); |
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} |
| 371 | 0 | catch (Exception e) |
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{ |
| 373 | 0 | continue; |
| 374 | 17 | } |
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break; |
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} |
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} |
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} |
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| 380 | 156 | if (StringUtils.isEmpty(serviceName)) |
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{ |
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| 383 | 0 | serviceName = field.getType().getName(); |
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} |
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| 386 | 156 | if (log.isDebugEnabled()) |
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{ |
| 388 | 156 | log.debug("Looking up service for injection: " + serviceName + " for object " + object); |
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} |
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|
| 391 | 156 | Object service = manager.getService(serviceName); |
| 392 | 152 | field.setAccessible(true); |
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try |
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{ |
| 396 | 152 | if (log.isDebugEnabled()) |
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{ |
| 398 | 152 | log.debug("Injection of " + serviceName + " into object " + object); |
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} |
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| 401 | 152 | field.set(object, service); |
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} |
| 403 | 0 | catch (IllegalArgumentException e) |
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{ |
| 405 | 0 | throw new TurbineException("Could not inject service " |
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+ serviceName + " into object " + object, e); |
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} |
| 408 | 0 | catch (IllegalAccessException e) |
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{ |
| 410 | 0 | throw new TurbineException("Could not inject service " |
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+ serviceName + " into object " + object, e); |
| 412 | 152 | } |
| 413 | 152 | } |
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} |