com.cloudera.science.attribution.SessionsFn.java Source code

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Here is the source code for com.cloudera.science.attribution.SessionsFn.java

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/**
 * Copyright (c) 2013, Cloudera, Inc. All Rights Reserved.
 *
 * Cloudera, Inc. 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
 *
 * This software 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.cloudera.science.attribution;

import java.util.Collection;

import org.apache.crunch.MapFn;
import org.apache.crunch.Pair;

import com.google.common.collect.Lists;
import com.google.common.collect.Sets;

/**
 *
 */
public class SessionsFn extends
        MapFn<Pair<String, Pair<Collection<Boolean>, Collection<String>>>, Pair<String, Pair<Boolean, Collection<String>>>> {
    @Override
    public Pair<String, Pair<Boolean, Collection<String>>> map(
            Pair<String, Pair<Collection<Boolean>, Collection<String>>> in) {
        boolean hasEvent = !in.second().first().isEmpty();
        Collection<String> unique = Lists.newArrayList(Sets.newTreeSet(in.second().second()));
        return Pair.of(in.first(), Pair.of(hasEvent, unique));
    }
}