001
014
015 package com.liferay.portal.cache;
016
017 import com.liferay.portal.kernel.cache.Lifecycle;
018 import com.liferay.portal.kernel.cache.ThreadLocalCachable;
019 import com.liferay.portal.kernel.cache.ThreadLocalCache;
020 import com.liferay.portal.kernel.cache.ThreadLocalCacheManager;
021 import com.liferay.portal.kernel.util.MethodTargetClassKey;
022 import com.liferay.portal.kernel.util.StringBundler;
023 import com.liferay.portal.kernel.util.StringPool;
024 import com.liferay.portal.spring.aop.AnnotationChainableMethodAdvice;
025
026 import java.lang.annotation.Annotation;
027
028 import org.aopalliance.intercept.MethodInvocation;
029
030
034 public class ThreadLocalCacheAdvice
035 extends AnnotationChainableMethodAdvice<ThreadLocalCachable> {
036
037 public void afterReturning(
038 MethodInvocation methodInvocation, Object result)
039 throws Throwable {
040
041 MethodTargetClassKey methodTargetClassKey = buildMethodTargetClassKey(
042 methodInvocation);
043
044 ThreadLocalCachable threadLocalCachable = findAnnotation(
045 methodTargetClassKey);
046
047 if (threadLocalCachable == _nullThreadLocalCacheable) {
048 return;
049 }
050
051 ThreadLocalCache<Object> threadLocalCache =
052 ThreadLocalCacheManager.getThreadLocalCache(
053 threadLocalCachable.scope(), methodTargetClassKey.toString());
054
055 String cacheKey = _buildCacheKey(methodInvocation.getArguments());
056
057 if (result == null) {
058 threadLocalCache.put(cacheKey, nullResult);
059 }
060 else {
061 threadLocalCache.put(cacheKey, result);
062 }
063 }
064
065 public Object before(MethodInvocation methodInvocation) throws Throwable {
066 MethodTargetClassKey methodTargetClassKey = buildMethodTargetClassKey(
067 methodInvocation);
068
069 ThreadLocalCachable threadLocalCachable = findAnnotation(
070 methodTargetClassKey);
071
072 if (threadLocalCachable == _nullThreadLocalCacheable) {
073 return null;
074 }
075
076 ThreadLocalCache<?> threadLocalCache =
077 ThreadLocalCacheManager.getThreadLocalCache(
078 threadLocalCachable.scope(), methodTargetClassKey.toString());
079
080 String cacheKey = _buildCacheKey(methodInvocation.getArguments());
081
082 Object value = threadLocalCache.get(cacheKey);
083
084 if (value == nullResult) {
085 return null;
086 }
087
088 return value;
089 }
090
091 public ThreadLocalCachable getNullAnnotation() {
092 return _nullThreadLocalCacheable;
093 }
094
095 private String _buildCacheKey(Object[] arguments) {
096 StringBundler sb = new StringBundler(arguments.length * 2 - 1);
097
098 for (int i = 0; i < arguments.length; i++) {
099 sb.append(String.valueOf(arguments[i]));
100
101 if ((i + 1) < arguments.length) {
102 sb.append(StringPool.POUND);
103 }
104 }
105
106 return sb.toString();
107 }
108
109 private static ThreadLocalCachable _nullThreadLocalCacheable =
110 new ThreadLocalCachable() {
111
112 public Class<? extends Annotation> annotationType() {
113 return ThreadLocalCachable.class;
114 }
115
116 public Lifecycle scope() {
117 return null;
118 }
119
120 };
121
122 }