Class Util

test/org/apache/pig/test/Util.java:113–1552

import com.google.common.collect.Lists;

public class Util {
    private static BagFactory mBagFactory = BagFactory.getInstance();
    private static TupleFactory mTupleFactory = TupleFactory.getInstance();

    // Commonly-checked system state
    // =================
    public static final boolean WINDOWS /* borrowed from Path.WINDOWS, Shell.WINDOWS */
                  = System.getProperty("os.name").startsWith("Windows");

    public static final String TEST_DIR =  System.getProperty("test.build.dir", "build/test");

    // Helper Functions
    // =================

    static public Tuple loadFlatTuple(Tuple t, int[] input) throws ExecException {
        for (int i = 0; i < input.length; i++) {
            t.set(i, new Integer(input[i]));
        }
        return t;
    }

    static public Tuple loadTuple(Tuple t, String[] input) throws ExecException {
        for (int i = 0; i < input.length; i++) {
            t.set(i, input[i]);
        }
        return t;
    }

    static public Tuple loadTuple(Tuple t, DataByteArray[] input) throws ExecException {
        for (int i = 0; i < input.length; i++) {
            t.set(i, input[i]);
        }
        return t;
    }

    static public Tuple loadNestTuple(Tuple t, int[] input) throws ExecException {
        DataBag bag = BagFactory.getInstance().newDefaultBag();
        for(int i = 0; i < input.length; i++) {
            Tuple f = TupleFactory.getInstance().newTuple(1);
            f.set(0, input[i]);
            bag.add(f);
        }
        t.set(0, bag);
        return t;
    }

    static public Tuple loadNestTuple(Tuple t, long[] input) throws ExecException {
        DataBag bag = BagFactory.getInstance().newDefaultBag();
        for(int i = 0; i < input.length; i++) {
            Tuple f = TupleFactory.getInstance().newTuple(1);
            f.set(0, new Long(input[i]));
            bag.add(f);
        }
        t.set(0, bag);
        return t;
    }

    // this one should handle String, DataByteArray, Long, Integer etc..