org.apache.jackrabbit.oak.plugins.segment.SegmentNodeBuilder 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.segment;
import org.apache.jackrabbit.oak.plugins.memory.MemoryNodeBuilder;
import org.apache.jackrabbit.oak.spi.state.NodeState;
public class SegmentNodeBuilder extends MemoryNodeBuilder {
/**
* Number of content updates that need to happen before the updates
* are automatically purged to the underlying segments.
*/
private static final int UPDATE_LIMIT =
Integer.getInteger("update.limit", 10000);
private long updateCount = 0;
private final SegmentStore store;
SegmentNodeBuilder(SegmentNodeState base) {
super(base);
this.store = base.getStore();
}
//-------------------------------------------------< MemoryNodeBuilder >--
@Override
protected void updated() {
updateCount++;
if (updateCount > UPDATE_LIMIT) {
getNodeState();
}
}
//-------------------------------------------------------< NodeBuilder >--
@Override
public SegmentNodeState getBaseState() {
// guaranteed to be a SegmentNodeState
return (SegmentNodeState) super.getBaseState();
}
@Override
public SegmentNodeState getNodeState() {
NodeState state = super.getNodeState();
if (!store.isInstance(state, SegmentNodeState.class)) {
state = store.getWriter().writeNode(state);
set(state);
updateCount = 0;
}
// guaranteed to be a SegmentNodeState from the same store as the base
return (SegmentNodeState) state;
}
}