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/*
 * Copyright (c) 2015 Goldman Sachs.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and Eclipse Distribution License v. 1.0 which accompany this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 */

package org.eclipse.collections.api.bimap;

import org.eclipse.collections.api.block.function.Function;
import org.eclipse.collections.api.block.function.Function2;
import org.eclipse.collections.api.block.predicate.Predicate;
import org.eclipse.collections.api.block.predicate.Predicate2;
import org.eclipse.collections.api.block.procedure.Procedure;
import org.eclipse.collections.api.map.MapIterable;
import org.eclipse.collections.api.multimap.set.SetMultimap;
import org.eclipse.collections.api.partition.set.PartitionUnsortedSet;
import org.eclipse.collections.api.set.SetIterable;
import org.eclipse.collections.api.tuple.Pair;

/**
 * A map that allows users to look up key-value pairs from either direction. Uniqueness is enforced on both the keys and values.
 *
 * @since 4.2
 */
public interface BiMap extends MapIterable
{
    /**
     * Returns an inversed view of this BiMap, where the associations are in the direction of this bimap's values to keys.
     */
    BiMap inverse();

    SetMultimap flip();

    BiMap flipUniqueValues();

    /**
     * Converts the BiMap to an ImmutableBiMap.  If the bimap is immutable, it returns itself.
     */
    ImmutableBiMap toImmutable();

    BiMap tap(Procedure procedure);

    BiMap select(Predicate2 predicate);

    BiMap reject(Predicate2 predicate);

    /**
     * {@inheritDoc}
     *
     * Implementations are expected to delegate to {@link MutableBiMap#put(Object, Object)},
     * {@link ImmutableBiMap#newWithKeyValue(Object, Object)}, or equivalent, not {@link MutableBiMap#forcePut(Object, Object)}.
     *
     * @throws RuntimeException when {@code function} returns colliding keys or values.
     */
     BiMap collect(Function2> function);

    /**
     * {@inheritDoc}
     *
     * Implementations are expected to delegate to {@link MutableBiMap#put(Object, Object)},
     * {@link ImmutableBiMap#newWithKeyValue(Object, Object)}, or equivalent, not {@link MutableBiMap#forcePut(Object, Object)}.
     *
     * @throws RuntimeException when {@code function} returns colliding values.
     */
     BiMap collectValues(Function2 function);

    SetIterable select(Predicate predicate);

     SetIterable selectWith(Predicate2 predicate, P parameter);

    SetIterable reject(Predicate predicate);

    
 SetIterable rejectWith(Predicate2 predicate, P parameter);

    PartitionUnsortedSet partition(Predicate predicate);

     PartitionUnsortedSet partitionWith(Predicate2 predicate, P parameter);

     SetIterable selectInstancesOf(Class clazz);

     SetIterable> zip(Iterable that);

    SetIterable> zipWithIndex();

     SetMultimap groupBy(Function function);

     SetMultimap groupByEach(Function> function);

     BiMap groupByUniqueKey(Function function);
}