xunliu commented on code in PR #8297: URL: https://github.com/apache/gravitino/pull/8297#discussion_r2307045252
########## core/src/main/java/org/apache/gravitino/cache/ReverseIndexCache.java: ########## @@ -0,0 +1,111 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.gravitino.cache; + +import com.google.common.base.Preconditions; +import com.google.common.collect.Lists; +import com.googlecode.concurrenttrees.radix.ConcurrentRadixTree; +import com.googlecode.concurrenttrees.radix.RadixTree; +import com.googlecode.concurrenttrees.radix.node.concrete.DefaultCharArrayNodeFactory; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import org.apache.gravitino.Entity; +import org.apache.gravitino.HasIdentifier; +import org.apache.gravitino.NameIdentifier; +import org.apache.gravitino.meta.GroupEntity; +import org.apache.gravitino.meta.RoleEntity; +import org.apache.gravitino.meta.UserEntity; + +/** + * Reverse index cache for managing entity relationships. This cache uses a radix tree to + * efficiently store and retrieve relationships between entities based on their keys. + */ +public class ReverseIndexCache { + private final RadixTree<EntityCacheKey> reverseIndex; + + public ReverseIndexCache() { + this.reverseIndex = new ConcurrentRadixTree<>(new DefaultCharArrayNodeFactory()); + + registerReverseRule(UserEntity.class, ReverseIndexRules.USER_REVERSE_RULE); + registerReverseRule(GroupEntity.class, ReverseIndexRules.GROUP_REVERSE_RULE); + registerReverseRule(RoleEntity.class, ReverseIndexRules.ROLE_REVERSE_RULE); + } + + public boolean remove(EntityCacheKey key) { + return reverseIndex.remove(key.toString()); + } + + public Iterable<EntityCacheKey> getValuesForKeysStartingWith(String keyPrefix) { + return reverseIndex.getValuesForKeysStartingWith(keyPrefix); + } + + public Iterable<CharSequence> getKeysStartingWith(String keyPrefix) { + return reverseIndex.getKeysStartingWith(keyPrefix); + } + + public boolean remove(String key) { + return reverseIndex.remove(key); + } + + public void put( + NameIdentifier nameIdentifier, Entity.EntityType type, EntityCacheRelationKey key) { + EntityCacheKey entityCacheKey = EntityCacheKey.of(nameIdentifier, type); + String strEntityCacheKey = entityCacheKey.toString(); + List<EntityCacheKey> entityKeysToRemove = Review Comment: Fixed -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
