it.unimi.dsi.fastutil.objects.Object2DoubleMaps Maven / Gradle / Ivy
Show all versions of fastutil Show documentation
/* Generic definitions */
/* Assertions (useful to generate conditional code) */
/* Current type and class (and size, if applicable) */
/* Value methods */
/* Interfaces (keys) */
/* Interfaces (values) */
/* Abstract implementations (keys) */
/* Abstract implementations (values) */
/* Static containers (keys) */
/* Static containers (values) */
/* Implementations */
/* Synchronized wrappers */
/* Unmodifiable wrappers */
/* Other wrappers */
/* Methods (keys) */
/* Methods (values) */
/* Methods (keys/values) */
/* Methods that have special names depending on keys (but the special names depend on values) */
/* Equality */
/* Object/Reference-only definitions (keys) */
/* Object/Reference-only definitions (values) */
/* Primitive-type-only definitions (values) */
/*
* Copyright (C) 2002-2016 Sebastiano Vigna
*
* 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 it.unimi.dsi.fastutil.objects;
import it.unimi.dsi.fastutil.objects.ObjectSet;
import it.unimi.dsi.fastutil.objects.ObjectSets;
import it.unimi.dsi.fastutil.doubles.DoubleCollection;
import it.unimi.dsi.fastutil.doubles.DoubleCollections;
import it.unimi.dsi.fastutil.doubles.DoubleSets;
import java.util.Map;
/**
* A class providing static methods and objects that do useful things with
* type-specific maps.
*
* @see it.unimi.dsi.fastutil.Maps
* @see java.util.Collections
*/
public class Object2DoubleMaps {
private Object2DoubleMaps() {
}
/**
* An immutable class representing an empty type-specific map.
*
*
* This class may be useful to implement your own in case you subclass a
* type-specific map.
*/
public static class EmptyMap
extends
Object2DoubleFunctions.EmptyFunction
implements
Object2DoubleMap,
java.io.Serializable,
Cloneable {
private static final long serialVersionUID = -7046029254386353129L;
protected EmptyMap() {
}
public boolean containsValue(final double v) {
return false;
}
public void putAll(final Map m) {
throw new UnsupportedOperationException();
}
@SuppressWarnings("unchecked")
public ObjectSet> object2DoubleEntrySet() {
return ObjectSets.EMPTY_SET;
}
@SuppressWarnings("unchecked")
public ObjectSet keySet() {
return ObjectSets.EMPTY_SET;
}
public DoubleCollection values() {
return DoubleSets.EMPTY_SET;
}
public boolean containsValue(final Object ov) {
return false;
}
private Object readResolve() {
return EMPTY_MAP;
}
public Object clone() {
return EMPTY_MAP;
}
public boolean isEmpty() {
return true;
}
@SuppressWarnings({"rawtypes", "unchecked"})
public ObjectSet> entrySet() {
return (ObjectSet) object2DoubleEntrySet();
}
public int hashCode() {
return 0;
}
public boolean equals(final Object o) {
if (!(o instanceof Map))
return false;
return ((Map) o).isEmpty();
}
public String toString() {
return "{}";
}
}
/**
* An empty type-specific map (immutable). It is serializable and cloneable.
*/
@SuppressWarnings("rawtypes")
public static final EmptyMap EMPTY_MAP = new EmptyMap();
/**
* Return an empty map (immutable). It is serializable and cloneable.
*
*
* This method provides a typesafe access to {@link #EMPTY_MAP}.
*
* @return an empty map (immutable).
*/
@SuppressWarnings("unchecked")
public static Object2DoubleMap emptyMap() {
return EMPTY_MAP;
}
/**
* An immutable class representing a type-specific singleton map.
*
*
* This class may be useful to implement your own in case you subclass a
* type-specific map.
*/
public static class Singleton
extends
Object2DoubleFunctions.Singleton
implements
Object2DoubleMap,
java.io.Serializable,
Cloneable {
private static final long serialVersionUID = -7046029254386353129L;
protected transient ObjectSet> entries;
protected transient ObjectSet keys;
protected transient DoubleCollection values;
protected Singleton(final K key, final double value) {
super(key, value);
}
public boolean containsValue(final double v) {
return ((value) == (v));
}
public boolean containsValue(final Object ov) {
return ((((((Double) (ov)).doubleValue()))) == (value));
}
public void putAll(final Map m) {
throw new UnsupportedOperationException();
}
public ObjectSet> object2DoubleEntrySet() {
if (entries == null)
entries = ObjectSets
.singleton((Object2DoubleMap.Entry) new SingletonEntry());
return entries;
}
public ObjectSet keySet() {
if (keys == null)
keys = ObjectSets.singleton(key);
return keys;
}
public DoubleCollection values() {
if (values == null)
values = DoubleSets.singleton(value);
return values;
}
protected class SingletonEntry
implements
Object2DoubleMap.Entry,
Map.Entry {
public K getKey() {
return (Singleton.this.key);
}
/**
* {@inheritDoc}
*
* @deprecated Please use the corresponding type-specific method
* instead.
*/
@Deprecated
public Double getValue() {
return (Double.valueOf(Singleton.this.value));
}
public double getDoubleValue() {
return Singleton.this.value;
}
public double setValue(final double value) {
throw new UnsupportedOperationException();
}
public Double setValue(final Double value) {
throw new UnsupportedOperationException();
}
public boolean equals(final Object o) {
if (!(o instanceof Map.Entry))
return false;
Map.Entry e = (Map.Entry) o;
if (e.getValue() == null || !(e.getValue() instanceof Double))
return false;
return ((Singleton.this.key) == null
? ((e.getKey())) == null
: (Singleton.this.key).equals((e.getKey())))
&& ((Singleton.this.value) == (((((Double) (e
.getValue())).doubleValue()))));
}
public int hashCode() {
return ((Singleton.this.key) == null ? 0 : (Singleton.this.key)
.hashCode())
^ it.unimi.dsi.fastutil.HashCommon
.double2int(Singleton.this.value);
}
public String toString() {
return Singleton.this.key + "->" + Singleton.this.value;
}
}
public boolean isEmpty() {
return false;
}
@SuppressWarnings({"rawtypes", "unchecked"})
public ObjectSet> entrySet() {
return (ObjectSet) object2DoubleEntrySet();
}
public int hashCode() {
return ((key) == null ? 0 : (key).hashCode())
^ it.unimi.dsi.fastutil.HashCommon.double2int(value);
}
public boolean equals(final Object o) {
if (o == this)
return true;
if (!(o instanceof Map))
return false;
Map m = (Map) o;
if (m.size() != 1)
return false;
return entrySet().iterator().next()
.equals(m.entrySet().iterator().next());
}
public String toString() {
return "{" + key + "=>" + value + "}";
}
}
/**
* Returns a type-specific immutable map containing only the specified pair.
* The returned map is serializable and cloneable.
*
*
* Note that albeit the returned map is immutable, its default return value
* may be changed.
*
* @param key
* the only key of the returned map.
* @param value
* the only value of the returned map.
* @return a type-specific immutable map containing just the pair
* <key,value>.
*/
public static Object2DoubleMap singleton(final K key, double value) {
return new Singleton(key, value);
}
/**
* Returns a type-specific immutable map containing only the specified pair.
* The returned map is serializable and cloneable.
*
*
* Note that albeit the returned map is immutable, its default return value
* may be changed.
*
* @param key
* the only key of the returned map.
* @param value
* the only value of the returned map.
* @return a type-specific immutable map containing just the pair
* <key,value>.
*/
public static Object2DoubleMap singleton(final K key,
final Double value) {
return new Singleton((key), ((value).doubleValue()));
}
/** A synchronized wrapper class for maps. */
public static class SynchronizedMap
extends
Object2DoubleFunctions.SynchronizedFunction
implements
Object2DoubleMap,
java.io.Serializable {
private static final long serialVersionUID = -7046029254386353129L;
protected final Object2DoubleMap map;
protected transient ObjectSet> entries;
protected transient ObjectSet keys;
protected transient DoubleCollection values;
protected SynchronizedMap(final Object2DoubleMap m, final Object sync) {
super(m, sync);
this.map = m;
}
protected SynchronizedMap(final Object2DoubleMap m) {
super(m);
this.map = m;
}
public int size() {
synchronized (sync) {
return map.size();
}
}
public boolean containsKey(final Object k) {
synchronized (sync) {
return map.containsKey(k);
}
}
public boolean containsValue(final double v) {
synchronized (sync) {
return map.containsValue(v);
}
}
public double defaultReturnValue() {
synchronized (sync) {
return map.defaultReturnValue();
}
}
public void defaultReturnValue(final double defRetValue) {
synchronized (sync) {
map.defaultReturnValue(defRetValue);
}
}
public double put(final K k, final double v) {
synchronized (sync) {
return map.put(k, v);
}
}
// public void putAll( final MAP KEY_VALUE_EXTENDS_GENERIC c ) {
// synchronized( sync ) { map.putAll( c ); } }
public void putAll(final Map m) {
synchronized (sync) {
map.putAll(m);
}
}
public ObjectSet> object2DoubleEntrySet() {
if (entries == null)
entries = ObjectSets.synchronize(map.object2DoubleEntrySet(),
sync);
return entries;
}
public ObjectSet keySet() {
if (keys == null)
keys = ObjectSets.synchronize(map.keySet(), sync);
return keys;
}
public DoubleCollection values() {
if (values == null)
return DoubleCollections.synchronize(map.values(), sync);
return values;
}
public void clear() {
synchronized (sync) {
map.clear();
}
}
public String toString() {
synchronized (sync) {
return map.toString();
}
}
/**
* {@inheritDoc}
*
* @deprecated Please use the corresponding type-specific method
* instead.
*/
@Deprecated
@Override
public Double put(final K k, final Double v) {
synchronized (sync) {
return map.put(k, v);
}
}
/**
* {@inheritDoc}
*
* @deprecated Please use the corresponding type-specific method
* instead.
*/
@Deprecated
@Override
public boolean containsValue(final Object ov) {
synchronized (sync) {
return map.containsValue(ov);
}
}
/**
* {@inheritDoc}
*
* @deprecated Please use the corresponding type-specific method
* instead.
*/
@Deprecated
@Override
public double removeDouble(final Object k) {
synchronized (sync) {
return map.removeDouble(k);
}
}
/**
* {@inheritDoc}
*
* @deprecated Please use the corresponding type-specific method
* instead.
*/
@Deprecated
@Override
public double getDouble(final Object k) {
synchronized (sync) {
return map.getDouble(k);
}
}
public boolean isEmpty() {
synchronized (sync) {
return map.isEmpty();
}
}
public ObjectSet> entrySet() {
synchronized (sync) {
return map.entrySet();
}
}
public int hashCode() {
synchronized (sync) {
return map.hashCode();
}
}
public boolean equals(final Object o) {
synchronized (sync) {
return map.equals(o);
}
}
}
/**
* Returns a synchronized type-specific map backed by the given
* type-specific map.
*
* @param m
* the map to be wrapped in a synchronized map.
* @return a synchronized view of the specified map.
* @see java.util.Collections#synchronizedMap(Map)
*/
public static Object2DoubleMap synchronize(
final Object2DoubleMap m) {
return new SynchronizedMap(m);
}
/**
* Returns a synchronized type-specific map backed by the given
* type-specific map, using an assigned object to synchronize.
*
* @param m
* the map to be wrapped in a synchronized map.
* @param sync
* an object that will be used to synchronize the access to the
* map.
* @return a synchronized view of the specified map.
* @see java.util.Collections#synchronizedMap(Map)
*/
public static Object2DoubleMap synchronize(
final Object2DoubleMap m, final Object sync) {
return new SynchronizedMap(m, sync);
}
/** An unmodifiable wrapper class for maps. */
public static class UnmodifiableMap
extends
Object2DoubleFunctions.UnmodifiableFunction
implements
Object2DoubleMap,
java.io.Serializable {
private static final long serialVersionUID = -7046029254386353129L;
protected final Object2DoubleMap map;
protected transient ObjectSet> entries;
protected transient ObjectSet keys;
protected transient DoubleCollection values;
protected UnmodifiableMap(final Object2DoubleMap m) {
super(m);
this.map = m;
}
public int size() {
return map.size();
}
public boolean containsKey(final Object k) {
return map.containsKey(k);
}
public boolean containsValue(final double v) {
return map.containsValue(v);
}
public double defaultReturnValue() {
throw new UnsupportedOperationException();
}
public void defaultReturnValue(final double defRetValue) {
throw new UnsupportedOperationException();
}
public double put(final K k, final double v) {
throw new UnsupportedOperationException();
}
// public void putAll( final MAP KEY_VALUE_EXTENDS_GENERIC c ) { throw
// new UnsupportedOperationException(); }
public void putAll(final Map m) {
throw new UnsupportedOperationException();
}
public ObjectSet> object2DoubleEntrySet() {
if (entries == null)
entries = ObjectSets.unmodifiable(map.object2DoubleEntrySet());
return entries;
}
public ObjectSet keySet() {
if (keys == null)
keys = ObjectSets.unmodifiable(map.keySet());
return keys;
}
public DoubleCollection values() {
if (values == null)
return DoubleCollections.unmodifiable(map.values());
return values;
}
public void clear() {
throw new UnsupportedOperationException();
}
public String toString() {
return map.toString();
}
public boolean containsValue(final Object ov) {
return map.containsValue(ov);
}
@Override
public double removeDouble(final Object k) {
throw new UnsupportedOperationException();
}
@Override
public double getDouble(final Object k) {
return map.getDouble(k);
}
public boolean isEmpty() {
return map.isEmpty();
}
public ObjectSet> entrySet() {
return ObjectSets.unmodifiable(map.entrySet());
}
}
/**
* Returns an unmodifiable type-specific map backed by the given
* type-specific map.
*
* @param m
* the map to be wrapped in an unmodifiable map.
* @return an unmodifiable view of the specified map.
* @see java.util.Collections#unmodifiableMap(Map)
*/
public static Object2DoubleMap unmodifiable(
final Object2DoubleMap m) {
return new UnmodifiableMap(m);
}
}