io.druid.query.aggregation.atomcube.AtomCubeResultValue.java Source code

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Here is the source code for io.druid.query.aggregation.atomcube.AtomCubeResultValue.java

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/*
 * Licensed to Metamarkets Group Inc. (Metamarkets) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. Metamarkets 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 io.druid.query.aggregation.atomcube;

import com.fasterxml.jackson.annotation.JsonValue;
import com.google.common.base.Function;
import com.google.common.collect.Lists;
import com.metamx.common.IAE;
import io.druid.query.topn.DimensionAndMetricValueExtractor;

import javax.annotation.Nullable;
import java.io.Serializable;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

public class AtomCubeResultValue implements Iterable<DimensionAndMetricValueExtractor>, Serializable {

    private final List<DimensionAndMetricValueExtractor> value;

    public AtomCubeResultValue(List<?> value) {
        this.value = (value == null) ? Lists.<DimensionAndMetricValueExtractor>newArrayList()
                : Lists.transform(value, new Function<Object, DimensionAndMetricValueExtractor>() {
                    @Override
                    public DimensionAndMetricValueExtractor apply(@Nullable Object input) {
                        if (input instanceof Map) {
                            return new DimensionAndMetricValueExtractor((Map) input);
                        } else if (input instanceof DimensionAndMetricValueExtractor) {
                            return (DimensionAndMetricValueExtractor) input;
                        } else {
                            throw new IAE("Unknown type for input[%s]", input.getClass());
                        }
                    }
                });
    }

    @JsonValue
    public List<DimensionAndMetricValueExtractor> getValue() {
        return value;
    }

    @Override
    public Iterator<DimensionAndMetricValueExtractor> iterator() {
        return value.iterator();
    }

    @Override
    public String toString() {
        return "AtomCubeResultValue{" + "value=" + value + '}';
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }

        AtomCubeResultValue that = (AtomCubeResultValue) o;

        if (value != null ? !value.equals(that.value) : that.value != null) {
            return false;
        }

        return true;
    }

    @Override
    public int hashCode() {
        return value != null ? value.hashCode() : 0;
    }

    //  public static byte[] toByteArray(AtomCubeResultValue obj) throws IOException {
    //    byte[] bytes = null;
    //    ByteArrayOutputStream bos = null;
    //    ObjectOutputStream oos = null;
    //    try {
    //      bos = new ByteArrayOutputStream();
    //      oos = new ObjectOutputStream(bos);
    //      oos.writeObject(obj);
    //      oos.flush();
    //      bytes = bos.toByteArray();
    //    } finally {
    //      if (oos != null) {
    //        oos.close();
    //      }
    //      if (bos != null) {
    //        bos.close();
    //      }
    //    }
    //    return bytes;
    //  }
    //
    //  public static AtomCubeResultValue toResult(byte[] bytes) throws IOException, ClassNotFoundException {
    //    Object obj = null;
    //    ByteArrayInputStream bis = null;
    //    ObjectInputStream ois = null;
    //    try {
    //      bis = new ByteArrayInputStream(bytes);
    //      ois = new ObjectInputStream(bis);
    //      obj = ois.readObject();
    //    } finally {
    //      if (bis != null) {
    //        bis.close();
    //      }
    //      if (ois != null) {
    //        ois.close();
    //      }
    //    }
    //    return (AtomCubeResultValue)obj;
    //  }

}