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import lupos.engine.operators.multiinput.join.TreeBagMergeJoin; public class TreeBagOptional extends UsingJoinOptional { public TreeBagOptional() { super(new TreeBagMergeJoin()); }
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} private static Collection<? extends Join> initOperators() { final List<Join> joiner = new ArrayList<Join>(); for (int i = 0; i < DEFAULT_NUMBER_THREADS; i++) { joiner.add(new TreeBagMergeJoin()); } return joiner; }