org.apache.druid.timeline.TimelineLookup Maven / Gradle / Ivy
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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;
import org.apache.druid.timeline.partition.PartitionChunk;
import org.joda.time.Interval;
import javax.annotation.Nullable;
import java.util.List;
public interface TimelineLookup>
{
/**
* Does a lookup for the objects representing the given time interval. Will *only* return
* PartitionHolders that are complete.
*
* @param interval interval to find objects for
*
* @return Holders representing the interval that the objects exist for, PartitionHolders
* are guaranteed to be complete. Holders returned sorted by the interval.
*/
List> lookup(Interval interval);
/**
* Does a lookup for the objects representing the given time interval. Will also return
* incomplete PartitionHolders.
*
* @param interval interval to find objects for
*
* @return Holders representing the interval that the objects exist for, PartitionHolders
* can be incomplete. Holders returned sorted by the interval.
*/
List> lookupWithIncompletePartitions(Interval interval);
/**
* Finds the {@link PartitionChunk} for the given time interval, version and chunk number.
*/
@Nullable
PartitionChunk findChunk(Interval interval, VersionType version, int partitionNum);
}