org.apache.jackrabbit.oak.plugins.migration.NameFilteringNodeState Maven / Gradle / Ivy
/*
* 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.migration;
import com.google.common.base.Charsets;
import org.apache.jackrabbit.oak.api.PropertyState;
import org.apache.jackrabbit.oak.plugins.document.util.Utils;
import org.apache.jackrabbit.oak.spi.state.NodeState;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.annotation.Nonnull;
public class NameFilteringNodeState extends AbstractDecoratedNodeState {
private static final Logger LOG = LoggerFactory.getLogger(NameFilteringNodeState.class);
private static final int NODE_NAME_LIMIT = 150;
/**
* Max character size in bytes in UTF8 = 4. Therefore if the number of characters is smaller
* than NODE_NAME_LIMIT / 4 we don't need to count bytes.
*/
private static final int SAFE_NODE_NAME_LENGTH = NODE_NAME_LIMIT / 4;
public static NodeState wrap(final NodeState delegate) {
return new NameFilteringNodeState(delegate);
}
private NameFilteringNodeState(final NodeState delegate) {
super(delegate);
}
@Override
protected boolean hideChild(@Nonnull final String name, @Nonnull final NodeState delegateChild) {
if (isNameTooLong(name)) {
LOG.warn("Node name '{}' too long. Skipping child of {}", name, this);
return true;
}
return super.hideChild(name, delegateChild);
}
@Override
@Nonnull
protected NodeState decorateChild(@Nonnull final String name, @Nonnull final NodeState delegateChild) {
return wrap(delegateChild);
}
@Override
protected PropertyState decorateProperty(@Nonnull final PropertyState delegatePropertyState) {
return fixChildOrderPropertyState(this, delegatePropertyState);
}
/**
* This method checks whether the name is no longer than the maximum node
* name length supported by the DocumentNodeStore.
*
* @param name
* to check
* @return true if the name is longer than {@link Utils#NODE_NAME_LIMIT}
*/
public static boolean isNameTooLong(@Nonnull String name) {
// OAK-1589: maximum supported length of name for DocumentNodeStore
// is 150 bytes. Skip the sub tree if the the name is too long
return name.length() > SAFE_NODE_NAME_LENGTH && name.getBytes(Charsets.UTF_8).length > NODE_NAME_LIMIT;
}
}