| /* |
| * Copyright 2016, Yahoo! Inc. |
| * Licensed under the terms of the Apache License 2.0. See LICENSE file at the project root for terms. |
| */ |
| |
| package com.yahoo.sketches.pig.tuple; |
| |
| import java.util.List; |
| |
| import org.apache.pig.data.BagFactory; |
| import org.apache.pig.data.DataBag; |
| import org.apache.pig.data.Tuple; |
| import org.apache.pig.data.TupleFactory; |
| |
| public class PigUtil { |
| /** |
| * Wraps input Objects in a Tuple |
| * @param objects Objects intended to be wrapped |
| * @return a Pig Tuple containing the input Objects |
| */ |
| public static Tuple objectsToTuple(final Object ... objects) { |
| final Tuple tuple = TupleFactory.getInstance().newTuple(); |
| for (final Object object: objects) { tuple.append(object); } |
| return tuple; |
| } |
| |
| /** |
| * Wraps a set of Tuples in a DataBag |
| * @param tuples Tuples to wrap |
| * @return a Pig DataBag containing the input Tuples |
| */ |
| public static DataBag tuplesToBag(final Tuple ... tuples) { |
| final DataBag bag = BagFactory.getInstance().newDefaultBag(); |
| for (final Tuple tuple: tuples) { bag.add(tuple); } |
| return bag; |
| } |
| |
| /** |
| * Wraps a List of objects into a DataBag of Tuples (one object per Tuple) |
| * @param list List of items to wrap |
| * @param <T> Type of objects in the List |
| * @return a Pig DataBag containing Tuples populated with list items |
| */ |
| public static <T> DataBag listToBagOfTuples(final List<T> list) { |
| final DataBag bag = BagFactory.getInstance().newDefaultBag(); |
| for (final Object object: list) { |
| final Tuple tuple = TupleFactory.getInstance().newTuple(); |
| tuple.append(object); |
| bag.add(tuple); |
| } |
| return bag; |
| } |
| } |