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| package org.jboss.cache.pojo.impl; |
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| |
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| import java.lang.reflect.Field; |
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| import java.util.HashMap; |
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| import java.util.Iterator; |
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| import java.util.List; |
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| import java.util.Map; |
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| import java.util.Set; |
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| |
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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.jboss.aop.Advised; |
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| import org.jboss.aop.Advisor; |
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| import org.jboss.aop.ClassInstanceAdvisor; |
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| import org.jboss.aop.InstanceAdvisor; |
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| import org.jboss.cache.Cache; |
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| import org.jboss.cache.CacheException; |
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| import org.jboss.cache.Fqn; |
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| import org.jboss.cache.pojo.interceptors.dynamic.CacheFieldInterceptor; |
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| import org.jboss.cache.pojo.memory.FieldPersistentReference; |
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| import org.jboss.cache.pojo.util.AopUtil; |
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| class AdvisedPojoHandler |
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| { |
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| private final Log log = LogFactory.getLog(AdvisedPojoHandler.class); |
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| private Cache<Object, Object> cache_; |
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| private PojoCacheImpl pCache_; |
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| private PojoUtil util_; |
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| |
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| public AdvisedPojoHandler(PojoCacheImpl pCache, InternalHelper internal,
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| PojoUtil util) |
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| { |
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| pCache_ = pCache;
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| cache_ = pCache_.getCache();
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| util_ = util;
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| } |
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| |
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| public Object get(Fqn fqn, Class clazz, PojoInstance pojoInstance)
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| throws CacheException |
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| { |
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| CachedType type = pCache_.getCachedType(clazz);
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| Object obj = null;
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| try
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| { |
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| obj = clazz.newInstance();
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| |
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| } |
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| catch (Exception e) |
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| { |
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| try
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| { |
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| obj = loadFromOthers(fqn, clazz);
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| if (obj == null) throw e;
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| } |
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| catch (Exception e1) |
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| { |
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| throw new CacheException("failed creating instance of " + clazz.getName(), e);
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| } |
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| } |
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| |
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| InstanceAdvisor advisor = ((Advised) obj)._getInstanceAdvisor();
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| CacheFieldInterceptor interceptor = new CacheFieldInterceptor(pCache_, fqn, type);
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| interceptor.setAopInstance(pojoInstance);
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| util_.attachInterceptor(obj, advisor, interceptor);
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| return obj;
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| } |
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| |
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| private Object loadFromOthers(Fqn fqn, Class clazz) throws Exception
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| { |
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| |
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| if (clazz.isEnum())
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| { |
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| String name = (String) pCache_.getCache().get(fqn, InternalConstant.ENUM_KEY);
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| if (name == null)
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| { |
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| throw new CacheException(
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| "AdvisedPojoHandler.loadFromOthers(): can't retrieve java.lang.Enum name field." |
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| + " fqn: " + fqn); |
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| } |
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| Object obj = Enum.valueOf(clazz, name);
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| return obj;
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| } |
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| return null;
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| } |
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| |
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| void put(Fqn fqn, Fqn referencingFqn, Object obj) throws CacheException
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| { |
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| CachedType type = pCache_.getCachedType(obj.getClass());
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| InstanceAdvisor advisor = ((Advised) obj)._getInstanceAdvisor();
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| if (advisor == null)
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| { |
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| advisor = new ClassInstanceAdvisor(obj);
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| ((Advised) obj)._setInstanceAdvisor(advisor);
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| } |
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| Map map = new HashMap();
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| PojoInstance pojoInstance = InternalHelper.initializeAopInstance(referencingFqn);
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| map.put(PojoInstance.KEY, pojoInstance);
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| pojoInstance.setPojoClass(type.getType());
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| Map subPojoMap = new HashMap();
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| boolean hasFieldAnnotation = hasAnnotation(obj.getClass(), ((Advised) obj)._getAdvisor(), type);
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| |
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| for (Iterator i = type.getFields().iterator(); i.hasNext();)
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| { |
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| Field field = (Field) (((FieldPersistentReference) i.next())).get();
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| Object value = null;
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| try
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| { |
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| value = field.get(obj);
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| } |
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| catch (IllegalAccessException e) |
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| { |
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| throw new CacheException("field access failed", e);
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| } |
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| CachedType fieldType = pCache_.getCachedType(field.getType());
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| |
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| if (CachedType.isPrimitiveNonReplicatable(field))
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| { |
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| continue;
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| } |
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| if (hasFieldAnnotation)
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| { |
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| if (CachedType.hasTransientAnnotation(field, ((Advised) obj)._getAdvisor()))
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| { |
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| continue;
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| } |
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| } |
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| if (fieldType.isImmediate() ||
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| (hasFieldAnnotation && |
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| CachedType.hasSerializableAnnotation(field, ((Advised) obj)._getAdvisor()))) |
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| { |
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| map.put(field.getName(), value);
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| } |
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| else |
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| { |
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| subPojoMap.put(field, value);
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| } |
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| } |
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| cache_.getRoot().addChild(fqn).putAll(map);
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| CacheFieldInterceptor interceptor = new CacheFieldInterceptor(pCache_, fqn, type);
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| interceptor.setAopInstance(pojoInstance);
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| util_.attachInterceptor(obj, advisor, interceptor);
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| InternalHelper.setPojo(pojoInstance, obj);
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| for (Object o : subPojoMap.keySet())
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| { |
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| Field field = (Field) o;
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| Object value = subPojoMap.get(field);
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| if (value == null) continue;
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| pCache_.attach(fqn, value, field.getName());
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| if (value instanceof Map || value instanceof List || value instanceof Set)
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| { |
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| Object newValue = pCache_.getObject(fqn, field.getName());
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| util_.inMemorySubstitution(obj, field, newValue);
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| } |
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| } |
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| if (log.isDebugEnabled())
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| { |
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| log.debug("internalPut(): inserting with fqn: " + fqn);
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| } |
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| } |
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| Object remove(Fqn fqn, Object result, Class clazz) throws CacheException
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| { |
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| CachedType type = pCache_.getCachedType(clazz);
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| InstanceAdvisor advisor = ((Advised) result)._getInstanceAdvisor();
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| for (Iterator i = type.getFields().iterator(); i.hasNext();)
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| { |
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| Field field = (Field) (((FieldPersistentReference) i.next())).get();
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| CachedType fieldType = pCache_.getCachedType(field.getType());
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| Object value = null;
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| if (!fieldType.isImmediate())
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| { |
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| value = pCache_.detach(fqn, field.getName());
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| if ((value instanceof Map || value instanceof List || value instanceof Set))
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| { |
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| util_.inMemorySubstitution(result, field, value);
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| } |
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| } |
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| else |
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| { |
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| value = cache_.get(fqn, field.getName());
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| util_.inMemorySubstitution(result, field, value);
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| } |
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| } |
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| cache_.getRoot().getChild(fqn).clearData();
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| CacheFieldInterceptor interceptor = (CacheFieldInterceptor) AopUtil.findCacheInterceptor(advisor);
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| if (interceptor != null)
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| { |
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| if (log.isDebugEnabled())
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| { |
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| log.debug("regularRemoveObject(): removed cache interceptor fqn: " + fqn + " interceptor: " + interceptor);
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| } |
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| util_.detachInterceptor(advisor, interceptor);
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| } |
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| return null;
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| } |
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2269
| private static boolean hasAnnotation(Class clazz, Advisor advisor, CachedType type)
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| { |
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2269
| return CachedType.hasAnnotation(clazz, advisor, type);
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| } |
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| } |