io.druid.data.input.Rows.java Source code

Introduction

Here is the source code for io.druid.data.input.Rows.java

Source

/*
* 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.data.input;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSortedSet;
import com.google.common.collect.Maps;

import io.druid.java.util.common.ISE;

import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;

/**
 */
public class Rows {
    public static InputRow toCaseInsensitiveInputRow(final Row row, final List<String> dimensions) {
        if (row instanceof MapBasedRow) {
            MapBasedRow mapBasedRow = (MapBasedRow) row;

            TreeMap<String, Object> caseInsensitiveMap = Maps.newTreeMap(String.CASE_INSENSITIVE_ORDER);
            caseInsensitiveMap.putAll(mapBasedRow.getEvent());
            return new MapBasedInputRow(mapBasedRow.getTimestamp(), dimensions, caseInsensitiveMap);
        }
        throw new ISE("Can only convert MapBasedRow objects because we are ghetto like that.");
    }

    /**
     * @param timeStamp rollup up timestamp to be used to create group key
     * @param inputRow input row
     * @return groupKey for the given input row
     */
    public static List<Object> toGroupKey(long timeStamp, InputRow inputRow) {
        final Map<String, Set<String>> dims = Maps.newTreeMap();
        for (final String dim : inputRow.getDimensions()) {
            final Set<String> dimValues = ImmutableSortedSet.copyOf(inputRow.getDimension(dim));
            if (dimValues.size() > 0) {
                dims.put(dim, dimValues);
            }
        }
        return ImmutableList.of(timeStamp, dims);
    }
}