/*
* Copyright 2015 Goldman Sachs.
*
* 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 com.gs.collections.impl.map.mutable;
import java.io.Serializable;
import java.util.AbstractSet;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import com.gs.collections.api.block.function.Function;
import com.gs.collections.api.block.function.Function0;
import com.gs.collections.api.block.function.Function2;
import com.gs.collections.api.block.procedure.Procedure;
import com.gs.collections.api.block.procedure.Procedure2;
import com.gs.collections.api.block.procedure.primitive.ObjectIntProcedure;
import com.gs.collections.api.map.ConcurrentMutableMap;
import com.gs.collections.api.map.ImmutableMap;
import com.gs.collections.api.map.MutableMap;
import com.gs.collections.api.tuple.Pair;
import com.gs.collections.impl.block.procedure.MapEntryToProcedure2;
import com.gs.collections.impl.factory.Maps;
import com.gs.collections.impl.tuple.ImmutableEntry;
import com.gs.collections.impl.utility.Iterate;
import com.gs.collections.impl.utility.internal.IterableIterate;
/**
* A simple concurrent implementation of MutableMap which uses java.util.concurrent.ConcurrentHashMap for its underlying
* concurrent Map implementation.
*
* @see com.gs.collections.impl.map.mutable.ConcurrentHashMap
* @deprecated since 2.0
*/
@Deprecated
public final class ConcurrentMutableHashMap<K, V>
extends AbstractMutableMap<K, V>
implements ConcurrentMutableMap<K, V>, Serializable
{
private static final long serialVersionUID = 1L;
private static final String JAVA_SPECIFICATION_VERSION = System.getProperty("java.specification.version");
private final ConcurrentMap<K, V> delegate;
private ConcurrentMutableHashMap()
{
this(new ConcurrentHashMap<K, V>());
}
public ConcurrentMutableHashMap(ConcurrentMap<K, V> delegate)
{
this.delegate = delegate;
}
public static <NK, NV> ConcurrentMutableHashMap<NK, NV> newMap()
{
return new ConcurrentMutableHashMap<NK, NV>();
}
public static <NK, NV> ConcurrentMutableHashMap<NK, NV> newMap(int initialCapacity)
{
return new ConcurrentMutableHashMap<NK, NV>(new ConcurrentHashMap<NK, NV>(initialCapacity));
}
public static <NK, NV> ConcurrentMutableHashMap<NK, NV> newMap(int initialCapacity, float loadFactor, int concurrencyLevel)
{
return new ConcurrentMutableHashMap<NK, NV>(new ConcurrentHashMap<NK, NV>(initialCapacity, loadFactor, concurrencyLevel));
}
public static <NK, NV> ConcurrentMutableHashMap<NK, NV> newMap(Map<NK, NV> map)
{
return new ConcurrentMutableHashMap<NK, NV>(new ConcurrentHashMap<NK, NV>(map));
}
@Override
public ConcurrentMutableHashMap<K, V> withKeyValue(K key, V value)
{
return (ConcurrentMutableHashMap<K, V>) super.withKeyValue(key, value);
}
@Override
public ConcurrentMutableHashMap<K, V> withAllKeyValues(Iterable<? extends Pair<? extends K, ? extends V>> keyValues)
{
return (ConcurrentMutableHashMap<K, V>) super.withAllKeyValues(keyValues);
}
@Override
public ConcurrentMutableHashMap<K, V> withAllKeyValueArguments(Pair<? extends K, ? extends V>... keyValues)
{
return (ConcurrentMutableHashMap<K, V>) super.withAllKeyValueArguments(keyValues);
}
@Override
public ConcurrentMutableHashMap<K, V> withoutKey(K key)
{
return (ConcurrentMutableHashMap<K, V>) super.withoutKey(key);
}
@Override
public ConcurrentMutableHashMap<K, V> withoutAllKeys(Iterable<? extends K> keys)
{
return (ConcurrentMutableHashMap<K, V>) super.withoutAllKeys(keys);
}
@Override
public String toString()
{
return this.delegate.toString();
}
@Override
public MutableMap<K, V> clone()
{
return ConcurrentMutableHashMap.newMap(this.delegate);
}
@Override
public <K, V> MutableMap<K, V> newEmpty(int capacity)
{
return ConcurrentMutableHashMap.newMap();
}
@Override
public boolean notEmpty()
{
return !this.delegate.isEmpty();
}
@Override
public void forEachWithIndex(ObjectIntProcedure<? super V> objectIntProcedure)
{
Iterate.forEachWithIndex(this.delegate.values(), objectIntProcedure);
}
public int size()
{
return this.delegate.size();
}
@Override
public boolean isEmpty()
{
return this.delegate.isEmpty();
}
@Override
public Iterator<V> iterator()
{
return this.delegate.values().iterator();
}
public V remove(Object key)
{
return this.delegate.remove(key);
}
public Set<K> keySet()
{
return this.delegate.keySet();
}
public Collection<V> values()
{
return this.delegate.values();
}
public Set<Entry<K, V>> entrySet()
{
if ("1.5".equals(JAVA_SPECIFICATION_VERSION))
{
return new SafeEntrySetAdapter<K, V>(this.delegate.entrySet());
}
return this.delegate.entrySet();
}
public void clear()
{
this.delegate.clear();
}
public MutableMap<K, V> newEmpty()
{
return ConcurrentMutableHashMap.newMap();
}
@Override
public void forEachValue(Procedure<? super V> procedure)
{
IterableIterate.forEach(this.delegate.values(), procedure);
}
@Override
public void forEachKey(Procedure<? super K> procedure)
{
IterableIterate.forEach(this.delegate.keySet(), procedure);
}
public void forEachKeyValue(Procedure2<? super K, ? super V> procedure)
{
IterableIterate.forEach(this.delegate.entrySet(), new MapEntryToProcedure2<K, V>(procedure));
}
public V get(Object key)
{
return this.delegate.get(key);
}
public V put(K key, V value)
{
return this.delegate.put(key, value);
}
public void putAll(Map<? extends K, ? extends V> map)
{
this.delegate.putAll(map);
}
public <E> MutableMap<K, V> collectKeysAndValues(
Iterable<E> iterable,
Function<? super E, ? extends K> keyFunction,
Function<? super E, ? extends V> valueFunction)
{
Iterate.addToMap(iterable, keyFunction, valueFunction, this.delegate);
return this;
}
public V removeKey(K key)
{
return this.delegate.remove(key);
}
public boolean containsKey(Object key)
{
return this.delegate.containsKey(key);
}
public boolean containsValue(Object value)
{
return this.delegate.containsValue(value);
}
@Override
public V getIfAbsentPut(K key, Function0<? extends V> function)
{
V result = this.delegate.get(key);
if (result == null)
{
V blockValue = function.value();
V putResult = this.delegate.putIfAbsent(key, blockValue);
return putResult == null ? blockValue : putResult;
}
return result;
}
@Override
public V getIfAbsentPut(K key, V value)
{
V result = this.delegate.get(key);
if (result == null)
{
V putResult = this.delegate.putIfAbsent(key, value);
return putResult == null ? value : putResult;
}
return result;
}
@Override
public <P> V getIfAbsentPutWith(K key, Function<? super P, ? extends V> function, P parameter)
{
V result = this.delegate.get(key);
if (result == null)
{
V functionValue = function.valueOf(parameter);
V putResult = this.delegate.putIfAbsent(key, functionValue);
return putResult == null ? functionValue : putResult;
}
return result;
}
@Override
public V getIfAbsent(K key, Function0<? extends V> function)
{
V result = this.delegate.get(key);
if (result == null)
{
return function.value();
}
return result;
}
@Override
public V getIfAbsentValue(K key, V value)
{
V result = this.delegate.get(key);
if (result == null)
{
return value;
}
return result;
}
@Override
public <P> V getIfAbsentWith(
K key,
Function<? super P, ? extends V> function,
P parameter)
{
V result = this.delegate.get(key);
if (result == null)
{
return function.valueOf(parameter);
}
return result;
}
public V getIfAbsentPut(K key, Function<? super K, ? extends V> factory)
{
throw new UnsupportedOperationException(this.getClass().getSimpleName() + ".getIfAbsentPut() not implemented yet");
}
@Override
public <A> A ifPresentApply(K key, Function<? super V, ? extends A> function)
{
V result = this.delegate.get(key);
return result == null ? null : function.valueOf(result);
}
@Override
public boolean equals(Object o)
{
return this.delegate.equals(o);
}
@Override
public int hashCode()
{
return this.delegate.hashCode();
}
@Override
public <P> void forEachWith(Procedure2<? super V, ? super P> procedure, P parameter)
{
Iterate.forEachWith(this.delegate.values(), procedure, parameter);
}
public V putIfAbsent(K key, V value)
{
return this.delegate.putIfAbsent(key, value);
}
public boolean remove(Object key, Object value)
{
return this.delegate.remove(key, value);
}
public boolean replace(K key, V oldValue, V newValue)
{
return this.delegate.replace(key, oldValue, newValue);
}
public V replace(K key, V value)
{
return this.delegate.replace(key, value);
}
private static final class SafeEntrySetAdapter<K, V>
extends AbstractSet<Entry<K, V>>
{
private final Set<Entry<K, V>> delegate;
private SafeEntrySetAdapter(Set<Entry<K, V>> newDelegate)
{
this.delegate = newDelegate;
}
@Override
public Iterator<Entry<K, V>> iterator()
{
return new Iterator<Entry<K, V>>()
{
private final Iterator<Entry<K, V>> entryIterator = SafeEntrySetAdapter.this.delegate.iterator();
public boolean hasNext()
{
return this.entryIterator.hasNext();
}
public Entry<K, V> next()
{
Entry<K, V> superNext = this.entryIterator.next();
return ImmutableEntry.of(superNext.getKey(), superNext.getValue());
}
public void remove()
{
this.entryIterator.remove();
}
};
}
@Override
public int size()
{
return this.delegate.size();
}
}
@Override
public V updateValue(K key, Function0<? extends V> factory, Function<? super V, ? extends V> function)
{
while (true)
{
V originalValue = this.delegate.get(key);
if (originalValue == null)
{
V zero = factory.value();
V newValue = function.valueOf(zero);
if (this.delegate.putIfAbsent(key, newValue) == null)
{
return newValue;
}
}
else
{
V newValue = function.valueOf(originalValue);
if (this.delegate.replace(key, originalValue, newValue))
{
return newValue;
}
}
}
}
@Override
public <P> V updateValueWith(K key, Function0<? extends V> factory, Function2<? super V, ? super P, ? extends V> function, P parameter)
{
while (true)
{
V originalValue = this.delegate.get(key);
if (originalValue == null)
{
V zero = factory.value();
V newValue = function.value(zero, parameter);
if (this.delegate.putIfAbsent(key, newValue) == null)
{
return newValue;
}
}
else
{
V newValue = function.value(originalValue, parameter);
if (this.delegate.replace(key, originalValue, newValue))
{
return newValue;
}
}
}
}
@Override
public ImmutableMap<K, V> toImmutable()
{
return Maps.immutable.ofMap(this);
}
}