com.facebook.presto.util.NestedIterableTransformer.java Source code

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Here is the source code for com.facebook.presto.util.NestedIterableTransformer.java

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/*
 * Licensed 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
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License 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.facebook.presto.util;

import com.google.common.collect.Iterables;

public class NestedIterableTransformer<E> {
    private final Iterable<Iterable<E>> iterable;

    public NestedIterableTransformer(Iterable<Iterable<E>> iterable) {
        this.iterable = iterable;
    }

    public IterableTransformer<E> flatten() {
        return new IterableTransformer<>(Iterables.concat(iterable));
    }
}