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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.query;
import org.apache.druid.java.util.common.guava.Sequence;
import org.apache.druid.query.context.ResponseContext;
/**
*/
public abstract class BySegmentSkippingQueryRunner implements QueryRunner
{
private final QueryRunner baseRunner;
public BySegmentSkippingQueryRunner(
QueryRunner baseRunner
)
{
this.baseRunner = baseRunner;
}
@Override
public Sequence run(QueryPlus queryPlus, ResponseContext responseContext)
{
if (queryPlus.getQuery().context().isBySegment()) {
return baseRunner.run(queryPlus, responseContext);
}
return doRun(baseRunner, queryPlus, responseContext);
}
protected abstract Sequence doRun(QueryRunner baseRunner, QueryPlus queryPlus, ResponseContext context);
}