| /* |
| * 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.jackrabbit.oak.plugins.document.persistentCache; |
| |
| import java.nio.ByteBuffer; |
| |
| import org.apache.jackrabbit.oak.plugins.document.LocalDiffCache; |
| import org.apache.jackrabbit.oak.plugins.document.DocumentNodeState; |
| import org.apache.jackrabbit.oak.plugins.document.DocumentNodeStore; |
| import org.apache.jackrabbit.oak.plugins.document.DocumentStore; |
| import org.apache.jackrabbit.oak.plugins.document.MemoryDiffCache; |
| import org.apache.jackrabbit.oak.plugins.document.NamePathRev; |
| import org.apache.jackrabbit.oak.plugins.document.NodeDocument; |
| import org.apache.jackrabbit.oak.plugins.document.Path; |
| import org.apache.jackrabbit.oak.plugins.document.PathRev; |
| import org.apache.jackrabbit.oak.plugins.document.RevisionVector; |
| import org.apache.jackrabbit.oak.plugins.document.util.RevisionsKey; |
| import org.apache.jackrabbit.oak.plugins.document.util.StringValue; |
| import org.h2.mvstore.WriteBuffer; |
| import org.h2.mvstore.type.StringDataType; |
| |
| public enum CacheType { |
| |
| NODE { |
| |
| @Override |
| public <K> void writeKey(WriteBuffer buffer, K key) { |
| PathRev pr = (PathRev) key; |
| DataTypeUtil.pathRevToBuffer(pr, buffer); |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public <K> K readKey(ByteBuffer buffer) { |
| return (K) DataTypeUtil.pathRevFromBuffer(buffer); |
| } |
| |
| @Override |
| public <K> int compareKeys(K a, K b) { |
| return ((PathRev) a).compareTo((PathRev) b); |
| } |
| |
| @Override |
| public <V> void writeValue(WriteBuffer buffer, V value) { |
| DataTypeUtil.stateToBuffer((DocumentNodeState) value, buffer); |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public <V> V readValue(DocumentNodeStore store, |
| DocumentStore docStore, |
| ByteBuffer buffer) { |
| return (V) DataTypeUtil.stateFromBuffer(store, buffer); |
| } |
| |
| @Override |
| public <K> boolean shouldCache(DocumentNodeStore store, K key) { |
| Path path = ((PathRev) key).getPath(); |
| if (!store.getNodeCachePredicate().apply(path)){ |
| return false; |
| } |
| return !store.getNodeStateCache().isCached(path); |
| } |
| }, |
| |
| CHILDREN { |
| |
| @Override |
| public <K> void writeKey(WriteBuffer buffer, K key) { |
| DataTypeUtil.namePathRevToBuffer((NamePathRev) key, buffer); |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public <K> K readKey(ByteBuffer buffer) { |
| return (K) DataTypeUtil.namePathRevFromBuffer(buffer); |
| } |
| |
| @Override |
| public <K> int compareKeys(K a, K b) { |
| return ((NamePathRev) a).compareTo((NamePathRev) b); |
| } |
| |
| @Override |
| public <V> void writeValue(WriteBuffer buffer, V value) { |
| String s = ((DocumentNodeState.Children) value).asString(); |
| StringDataType.INSTANCE.write(buffer, s); |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public <V> V readValue(DocumentNodeStore store, |
| DocumentStore docStore, |
| ByteBuffer buffer) { |
| return (V) DocumentNodeState.Children.fromString(readString(buffer)); |
| } |
| |
| @Override |
| public <K> boolean shouldCache(DocumentNodeStore store, K key) { |
| Path path = ((NamePathRev) key).getPath(); |
| if (!store.getNodeCachePredicate().apply(path)){ |
| return false; |
| } |
| return !store.getNodeStateCache().isCached(path); |
| } |
| }, |
| |
| DIFF { |
| |
| @Override |
| public <K> void writeKey(WriteBuffer buffer, K key) { |
| MemoryDiffCache.Key k = ((MemoryDiffCache.Key) key); |
| DataTypeUtil.pathToBuffer(k.getPath(), buffer); |
| DataTypeUtil.revisionVectorToBuffer(k.getFromRevision(), buffer); |
| DataTypeUtil.revisionVectorToBuffer(k.getToRevision(), buffer); |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public <K> K readKey(ByteBuffer buffer) { |
| Path p = DataTypeUtil.pathFromBuffer(buffer); |
| RevisionVector from = DataTypeUtil.revisionVectorFromBuffer(buffer); |
| RevisionVector to = DataTypeUtil.revisionVectorFromBuffer(buffer); |
| return (K) new MemoryDiffCache.Key(p, from, to); |
| } |
| |
| |
| @Override |
| public <K> int compareKeys(K a, K b) { |
| return ((MemoryDiffCache.Key) a).compareTo((MemoryDiffCache.Key) b); |
| } |
| |
| @Override |
| public <V> void writeValue(WriteBuffer buffer, V value) { |
| String s = ((StringValue) value).asString(); |
| StringDataType.INSTANCE.write(buffer, s); |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public <V> V readValue(DocumentNodeStore store, |
| DocumentStore docStore, |
| ByteBuffer buffer) { |
| return (V) StringValue.fromString(readString(buffer)); |
| } |
| |
| @Override |
| public <K> boolean shouldCache(DocumentNodeStore store, K key) { |
| return true; |
| } |
| }, |
| |
| DOCUMENT { |
| |
| @Override |
| public <K> void writeKey(WriteBuffer buffer, K key) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public <K> K readKey(ByteBuffer buffer) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public <K> int compareKeys(K a, K b) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public <V> void writeValue(WriteBuffer buffer, V value) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public <V> V readValue(DocumentNodeStore store, |
| DocumentStore docStore, |
| ByteBuffer buffer) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public <K> boolean shouldCache(DocumentNodeStore store, K key) { |
| return false; |
| } |
| }, |
| |
| PREV_DOCUMENT { |
| |
| @Override |
| public <K> void writeKey(WriteBuffer buffer, K key) { |
| String s = ((StringValue) key).asString(); |
| StringDataType.INSTANCE.write(buffer, s); |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public <K> K readKey(ByteBuffer buffer) { |
| return (K) StringValue.fromString(readString(buffer)); |
| } |
| |
| @Override |
| public <K> int compareKeys(K a, K b) { |
| return ((StringValue) a).asString().compareTo(((StringValue) b).asString()); |
| } |
| |
| @Override |
| public <V> void writeValue(WriteBuffer buffer, V value) { |
| String s = ((NodeDocument) value).asString(); |
| StringDataType.INSTANCE.write(buffer, s); |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public <V> V readValue(DocumentNodeStore store, |
| DocumentStore docStore, |
| ByteBuffer buffer) { |
| return (V) NodeDocument.fromString(docStore, readString(buffer)); |
| } |
| |
| @Override |
| public <K> boolean shouldCache(DocumentNodeStore store, K key) { |
| return true; |
| } |
| }, |
| |
| LOCAL_DIFF { |
| |
| @Override |
| public <K> void writeKey(WriteBuffer buffer, K key) { |
| RevisionsKey revisionsKey = ((RevisionsKey) key); |
| DataTypeUtil.revisionVectorToBuffer(revisionsKey.getRev1(), buffer); |
| DataTypeUtil.revisionVectorToBuffer(revisionsKey.getRev2(), buffer); |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public <K> K readKey(ByteBuffer buffer) { |
| RevisionVector rv1 = DataTypeUtil.revisionVectorFromBuffer(buffer); |
| RevisionVector rv2 = DataTypeUtil.revisionVectorFromBuffer(buffer); |
| return (K) new RevisionsKey(rv1, rv2); |
| } |
| |
| @Override |
| public <K> int compareKeys(K a, K b) { |
| return ((RevisionsKey) a).compareTo((RevisionsKey) b); |
| } |
| |
| @Override |
| public <V> void writeValue(WriteBuffer buffer, V value) { |
| String s = ((LocalDiffCache.Diff) value).asString(); |
| StringDataType.INSTANCE.write(buffer, s); |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public <V> V readValue(DocumentNodeStore store, |
| DocumentStore docStore, |
| ByteBuffer buffer) { |
| return (V) LocalDiffCache.Diff.fromString(readString(buffer)); |
| } |
| |
| @Override |
| public <K> boolean shouldCache(DocumentNodeStore store, K key) { |
| return true; |
| } |
| }; |
| |
| public static final CacheType[] VALUES = CacheType.values(); |
| |
| public String getMapName() { |
| // add a version suffix to the name and increment the version |
| // whenever the serialization for a key or value changes |
| return name() + "-v1"; |
| } |
| |
| public abstract <K> void writeKey(WriteBuffer buffer, K key); |
| public abstract <K> K readKey(ByteBuffer buffer); |
| public abstract <K> int compareKeys(K a, K b); |
| public abstract <V> void writeValue(WriteBuffer buffer, V value); |
| public abstract <V> V readValue( |
| DocumentNodeStore store, DocumentStore docStore, ByteBuffer buffer); |
| public abstract <K> boolean shouldCache(DocumentNodeStore store, K key); |
| |
| private static String readString(ByteBuffer buffer) { |
| return StringDataType.INSTANCE.read(buffer); |
| } |
| } |
| |