#557 Get access to CacheManager implementation

Author: Igor Polevoy

activejdbc/src/main/java/org/javalite/activejdbc/cache/CacheManager.java

@@ -141,4 +141,14 @@ public void purgeTableCache(String tableName) {
     public String getKey(String tableName, String query, Object[] params) {
         return tableName + query + (params == null ? null : Arrays.asList(params).toString());
     }
+
+
+    /**
+     * Returns underlying instance of implementation for specific configuration.
+     *
+     * @return actual underlying implementation of cache. The same as configured in <code>activejdbc.properties</code> file.
+     * For instance:
+     * <code>redis.clients.jedis.BinaryJedis</code>.
+     */
+    public abstract Object getImplementation();
 }

activejdbc/src/main/java/org/javalite/activejdbc/cache/EHCache3Manager.java

@@ -99,4 +99,9 @@ private Cache<String, Object> getCacheForGroupOrCreateIt(String group) {
         }
         return cache;
     }
+
+    @Override
+    public Object getImplementation() {
+        return this.cacheManager;
+    }
 }

activejdbc/src/main/java/org/javalite/activejdbc/cache/EHCacheManager.java

@@ -66,4 +66,9 @@ public void doFlush(CacheEvent event) {
             cacheManager.removeCache(event.getGroup());
         }
     }
+
+    @Override
+    public Object getImplementation() {
+        return this.cacheManager;
+    }
 }

activejdbc/src/main/java/org/javalite/activejdbc/cache/NopeCacheManager.java

@@ -16,4 +16,9 @@ public void addCache(String group, String key, Object cache) {}
 
     @Override
     public void doFlush(CacheEvent event) {}
+
+    @Override
+    public Object getImplementation() {
+        return null;
+    }
 }

activejdbc/src/main/java/org/javalite/activejdbc/cache/OSCacheManager.java

@@ -63,4 +63,9 @@ public void doFlush(CacheEvent event) {
             administrator.flushGroup(event.getGroup());
         }
     }
+
+    @Override
+    public Object getImplementation() {
+        return this.administrator;
+    }
 }

activejdbc/src/main/java/org/javalite/activejdbc/cache/RedisCacheManager.java

@@ -87,4 +87,9 @@ public void doFlush(CacheEvent event) {
             jedis.del(event.getGroup().getBytes());
         }
     }
+
+    @Override
+    public Object getImplementation() {
+        return this.jedis;
+    }
 }