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A module that is everything required to understands Druid Segments
/*
* 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.druid.timeline.partition;
/**
*/
@Deprecated
public class SingleElementPartitionChunk implements PartitionChunk
{
private final T element;
public SingleElementPartitionChunk(T element)
{
this.element = element;
}
@Override
public T getObject()
{
return element;
}
@Override
public boolean abuts(PartitionChunk tPartitionChunk)
{
return false;
}
@Override
public boolean isStart()
{
return true;
}
@Override
public boolean isEnd()
{
return true;
}
@Override
public int getChunkNumber()
{
return 0;
}
/**
* The ordering of PartitionChunks is determined entirely by the partition boundaries and has nothing to do
* with the object. Thus, if there are two SingleElementPartitionChunks, they are equal because they both
* represent the full partition space.
*
* SingleElementPartitionChunks are currently defined as less than every other type of PartitionChunk. There
* is no good reason for it, nor is there a bad reason, that's just the way it is. This is subject to change.
*
* @param chunk
* @return
*/
@Override
public int compareTo(PartitionChunk chunk)
{
return chunk instanceof SingleElementPartitionChunk ? 0 : -1;
}
@Override
public boolean equals(Object o)
{
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
return true;
}
@Override
public int hashCode()
{
return 0;
}
@Override
public String toString()
{
return "SingleElementPartitionChunk{" +
"element=" + element +
'}';
}
}