com.mobiquitynetworks.statsutilspig.GetKeys.java Source code

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Here is the source code for com.mobiquitynetworks.statsutilspig.GetKeys.java

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/*
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package com.mobiquitynetworks.statsutilspig;

import com.google.common.primitives.Ints;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.pig.EvalFunc;
import org.apache.pig.data.BagFactory;
import org.apache.pig.data.DataBag;
import org.apache.pig.data.Tuple;
import org.apache.pig.data.TupleFactory;
import org.bson.types.ObjectId;
import static org.bson.types.ObjectId.isValid;

/*
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/**
 *
 * @author asabater
 */
public class GetKeys extends EvalFunc<String> {

    private static final Log LOG = LogFactory.getLog(GetKeys.class);
    BagFactory mBagFactory = BagFactory.getInstance();
    TupleFactory mTupleFactory = TupleFactory.getInstance();

    @Override
    public String exec(Tuple params) throws IOException {

        DataBag keysDictionary = (DataBag) params.get(0);
        String[] keys = new String[Ints.checkedCast(keysDictionary.size())];

        int counter = 0;
        for (Object obj : keysDictionary) {
            Tuple iterTup = (Tuple) obj;
            Map<String, String> iterMap = (Map) iterTup.get(0);
            keys[counter] = iterMap.get("real");
            counter++;
        }

        return StringUtils.join(keys, ",");

    }

}