org.apache.giraph.block_app.framework.block.SequenceBlock.java Source code

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Here is the source code for org.apache.giraph.block_app.framework.block.SequenceBlock.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.giraph.block_app.framework.block;

import java.util.Arrays;
import java.util.Iterator;
import java.util.List;

import org.apache.giraph.block_app.framework.piece.AbstractPiece;
import org.apache.giraph.function.Consumer;

import com.google.common.collect.Iterables;

/**
 * Block that executes provided blocks sequentially.
 */
@SuppressWarnings("rawtypes")
public final class SequenceBlock implements Block {
    private final Block[] blocks;

    public SequenceBlock(Block... blocks) {
        this.blocks = blocks.clone();
    }

    public SequenceBlock(List<? extends Block> blocks) {
        this.blocks = blocks.toArray(new Block[blocks.size()]);
    }

    @Override
    public Iterator<AbstractPiece> iterator() {
        return Iterables.concat(Arrays.asList(blocks)).iterator();
    }

    @Override
    public void forAllPossiblePieces(Consumer<AbstractPiece> consumer) {
        for (Block block : blocks) {
            block.forAllPossiblePieces(consumer);
        }
    }

    @Override
    public String toString() {
        return "SequenceBlock" + Arrays.toString(blocks);
    }
}