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A DSL modelled around the UNIX pipe concept, that simplifies writing parallel and scalable pipelines in a portable manner
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/*
 * Copyright 2013-2019, Centre for Genomic Regulation (CRG)
 *
 * 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 nextflow.util;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;

/**
 * Provides a basic tuple implementation extending an {@link ArrayList}
 * and not allowing any content change operation
 *
 * @author Paolo Di Tommaso 
 */
public class ArrayTuple extends ArrayList {

    private static final long serialVersionUID = - 4765828600345948947L;

    public ArrayTuple() {}

    public ArrayTuple(Collection other) {
        super(other);
    }

    public ArrayTuple(int initialCapacity) {
        super(initialCapacity);
    }

    public boolean add(E e) {
        throw new UnsupportedOperationException();
    }

    public boolean remove(Object o) {
        throw new UnsupportedOperationException();
    }

    public boolean addAll(Collection coll) {
        throw new UnsupportedOperationException();
    }

    public boolean removeAll(Collection coll) {
        throw new UnsupportedOperationException();
    }

    public boolean retainAll(Collection coll) {
        throw new UnsupportedOperationException();
    }

    public void clear() {
        throw new UnsupportedOperationException();
    }

    public E set(int index, E element) {
        throw new UnsupportedOperationException();
    }

    public void add(int index, E element) {
        throw new UnsupportedOperationException();
    }

    public E remove(int index) {
        throw new UnsupportedOperationException();
    }

    public boolean addAll(int index, Collection c) {
        throw new UnsupportedOperationException();
    }

    public Iterator iterator() {
        return new Iterator() {
            private final Iterator i = ArrayTuple.super.iterator();

            public boolean hasNext() {return i.hasNext(); }
            public E next()          {return i.next(); }
            public void remove() {
                throw new UnsupportedOperationException();
            }
        };
    }

    public ListIterator listIterator(final int index) {
        return new ListIterator() {
            private final ListIterator i = ArrayTuple.super.listIterator(index);

            public boolean hasNext()     {return i.hasNext();}
            public E next()              {return i.next();}
            public boolean hasPrevious() {return i.hasPrevious();}
            public E previous()          {return i.previous();}
            public int nextIndex()       {return i.nextIndex();}
            public int previousIndex()   {return i.previousIndex();}

            public void remove() {
                throw new UnsupportedOperationException();
            }
            public void set(E e) {
                throw new UnsupportedOperationException();
            }
            public void add(E e) {
                throw new UnsupportedOperationException();
            }
        };
    }

    public List subList(int fromIndex, int toIndex) {
        return new ArrayTuple(super.subList(fromIndex, toIndex));
    }


}