com.linkedin.pinot.core.query.pruner.SegmentPrunerProvider.java Source code

Introduction

Here is the source code for com.linkedin.pinot.core.query.pruner.SegmentPrunerProvider.java

Source

/**
 * Copyright (C) 2014-2016 LinkedIn Corp. (pinot-core@linkedin.com)
 *
 * Licensed 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 com.linkedin.pinot.core.query.pruner;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import org.apache.commons.configuration.Configuration;

/**
 * A static SegmentPrunerProvider will give SegmentPruner instance based on prunerClassName and configuration.
 *
 *
 */
public class SegmentPrunerProvider {

    private static Map<String, Class<? extends SegmentPruner>> keyToFunction = new ConcurrentHashMap<String, Class<? extends SegmentPruner>>();

    static {
        keyToFunction.put("timesegmentpruner", TimeSegmentPruner.class);
        keyToFunction.put("dataschemasegmentpruner", DataSchemaSegmentPruner.class);
        keyToFunction.put("validsegmentpruner", ValidSegmentPruner.class);
    }

    public static SegmentPruner getSegmentPruner(String prunerClassName, Configuration segmentPrunerConfig) {
        try {
            Class<? extends SegmentPruner> cls = keyToFunction.get(prunerClassName.toLowerCase());
            if (cls != null) {
                SegmentPruner segmentPruner = (SegmentPruner) cls.newInstance();
                segmentPruner.init(segmentPrunerConfig);
                return segmentPruner;
            }
        } catch (Exception ex) {
            throw new RuntimeException("Not support SegmentPruner type with - " + prunerClassName, ex);
        }
        throw new UnsupportedOperationException("No SegmentPruner type with - " + prunerClassName);
    }
}