/*
 * Copyright (c) 2018 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.map.primitive;

import java.util.Map;

import org.eclipse.collections.api.LazyIntIterable;
import org.eclipse.collections.api.RichIterable;
import org.eclipse.collections.api.block.predicate.primitive.IntIntPredicate;
import org.eclipse.collections.api.block.procedure.primitive.IntIntProcedure;
import org.eclipse.collections.api.block.procedure.primitive.IntProcedure;
import org.eclipse.collections.api.set.primitive.MutableIntSet;
import org.eclipse.collections.api.tuple.primitive.IntIntPair;

This file was automatically generated from template file primitivePrimitiveMap.stg.
Since:
3.0./**
 * This file was automatically generated from template file primitivePrimitiveMap.stg.
 *
 * @since 3.0.
 */
public interface IntIntMap extends IntValuesMap
{
    
Retrieves the value associated with the key. If no mapping exists for the key, the default value (usually 0) is returned. 
Params:
key – the key
Returns:
the value associated with the key, or the default value if no such
mapping exists/**
     * Retrieves the value associated with the key. If no mapping exists for the key,
     * the default value (usually {@code 0}) is returned.
     * @param key the key
     * @return the value associated with the key, or the default value if no such
     * mapping exists
     */
    int get(int key);

    
Retrieves the value associated with the key, returning the specified default
value if no such mapping exists.
Params:
key – the key
ifAbsent – the default value to return if no mapping exists for key
Returns:
the value associated with the key, or ifAbsent if no such mapping exists./**
     * Retrieves the value associated with the key, returning the specified default
     * value if no such mapping exists.
     * @param key the key
     * @param ifAbsent the default value to return if no mapping exists for {@code key}
     * @return the value associated with the key, or {@code ifAbsent} if no such
     * mapping exists.
     */
    int getIfAbsent(int key, int ifAbsent);

    
Retrieves the value associated with the key, throwing an IllegalStateException if no such mapping exists. 
Params:
key – the key
Throws:
IllegalStateException – if no mapping exists for the key
Returns:
the value associated with the key/**
     * Retrieves the value associated with the key, throwing an {@link IllegalStateException}
     * if no such mapping exists.
     * @param key the key
     * @return the value associated with the key
     * @throws IllegalStateException if no mapping exists for the key
     */
    int getOrThrow(int key);

    
Returns whether or not the key is present in the map.
Params:
key – the key
Returns:
if a mapping exists in this map for the key/**
     * Returns whether or not the key is present in the map.
     * @param key the key
     * @return if a mapping exists in this map for the key
     */
    boolean containsKey(int key);

    
Iterates through each key in the map, invoking the procedure for each.
Params:
procedure – the procedure to invoke for each key/**
     * Iterates through each key in the map, invoking the procedure for each.
     * @param procedure the procedure to invoke for each key
     */
    void forEachKey(IntProcedure procedure);

    
Iterates through each key/value pair in the map, invoking the procedure for each.
Params:
procedure – the procedure to invoke for each key/value pair/**
     * Iterates through each key/value pair in the map, invoking the procedure for each.
     * @param procedure the procedure to invoke for each key/value pair
     */
    void forEachKeyValue(IntIntProcedure procedure);

    
Returns a view of the keys in this map. This iterable is backed by the map, so
any modifications to the underlying map will be reflected in the keys returned
by the iterable.
Returns:
a view of the keys in this map
Since:
5.0/**
     * Returns a view of the keys in this map. This iterable is backed by the map, so
     * any modifications to the underlying map will be reflected in the keys returned
     * by the iterable.
     * @return a view of the keys in this map
     * @since 5.0
     */
    LazyIntIterable keysView();

    
Returns a view of the key/value pairs in this map. This iterable is backed by
the map, so any modifications to the underlying map will be reflected in the
pairs returned by the iterable.
Returns:
a view of the keys in this map
Since:
5.0/**
     * Returns a view of the key/value pairs in this map. This iterable is backed by
     * the map, so any modifications to the underlying map will be reflected in the
     * pairs returned by the iterable.
     * @return a view of the keys in this map
     * @since 5.0
     */
    RichIterable<IntIntPair> keyValuesView();

    
Return the IntIntMap that is obtained by flipping the direction of this map and making the associations
from value to key.
Throws:
IllegalStateException – if the IntIntMap contains duplicate values.
Since:
9.0/**
         * Return the IntIntMap that is obtained by flipping the direction of this map and making the associations
         * from value to key.
         *
         * @throws IllegalStateException if the IntIntMap contains duplicate values.
         * @since 9.0
         */
    IntIntMap flipUniqueValues();

    
Return a copy of this map containing only the key/value pairs that match the predicate.
Params:
predicate – the predicate to determine which key/value pairs in this map should be
included in the returned map
Returns:
a copy of this map with the matching key/value pairs/**
     * Return a copy of this map containing only the key/value pairs that match the predicate.
     * @param predicate the predicate to determine which key/value pairs in this map should be
     * included in the returned map
     * @return a copy of this map with the matching key/value pairs
     */
    IntIntMap select(IntIntPredicate predicate);

    
Return a copy of this map containing only the key/value pairs that do not match the
predicate.
Params:
predicate – the predicate to determine which key/value pairs in this map should be
excluded from the returned map
Returns:
a copy of this map without the matching key/value pairs/**
     * Return a copy of this map containing only the key/value pairs that do not match the
     * predicate.
     * @param predicate the predicate to determine which key/value pairs in this map should be
     * excluded from the returned map
     * @return a copy of this map without the matching key/value pairs
     */
    IntIntMap reject(IntIntPredicate predicate);

    
Follows the same general contract as Map.equals(Object). /**
     * Follows the same general contract as {@link Map#equals(Object)}.
     */
    @Override
    boolean equals(Object o);

    
Follows the same general contract as Map.hashCode(). /**
     * Follows the same general contract as {@link Map#hashCode()}.
     */
    @Override
    int hashCode();

    
Follows the same general contract as AbstractMap.toString() 
Returns:
a string representation of this IntIntMap/**
     * Follows the same general contract as {@link java.util.AbstractMap#toString()}
     *
     * @return a string representation of this IntIntMap
     */
    @Override
    String toString();

    
Returns a copy of this map that is immutable (if this map is mutable) or
itself if it is already immutable.
Returns:
an immutable map that is equivalent to this one/**
     * Returns a copy of this map that is immutable (if this map is mutable) or
     * itself if it is already immutable.
     * @return an immutable map that is equivalent to this one
     */
    ImmutableIntIntMap toImmutable();

    
Returns a set containing all the keys in this map. The set is backed by the
map, so any modifications to the returned set will affect this map.
Returns:
a mutable set containing the keys in this map/**
     * Returns a set containing all the keys in this map. The set is backed by the
     * map, so any modifications to the returned set will affect this map.
     * @return a mutable set containing the keys in this map
     */
    MutableIntSet keySet();
}