/*
* Copyright (c) 2008-2017, Hazelcast, Inc. All Rights Reserved.
*
* 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.hazelcast.internal.util.hashslot.impl;
import com.hazelcast.internal.memory.MemoryManager;
import static com.hazelcast.internal.util.hashslot.impl.CapacityUtil.DEFAULT_CAPACITY;
import static com.hazelcast.internal.util.hashslot.impl.CapacityUtil.DEFAULT_LOAD_FACTOR;
/**
* Twin-key hash slot array with zero-width value. Suitable for a twin-long set implementation.
* Stores the null-sentinel value into the {@code key1} field, therefore the chosen null-sentinel value
* is not valid as the value of {@code key1}.
*/
public class HashSlotArray16byteKeyNoValue extends HashSlotArray16byteKeyImpl {
/**
* @param nullKey1 the null-sentinel value checked against the {@code key1} field.
*/
public HashSlotArray16byteKeyNoValue(long nullKey1, MemoryManager mm, int initialCapacity, float loadFactor) {
super(nullKey1, 0L, mm, null, 0, initialCapacity, loadFactor);
}
/**
* @param nullKey1 the null-sentinel value checked against the {@code key1} field.
*/
public HashSlotArray16byteKeyNoValue(long nullKey1, MemoryManager mm) {
this(nullKey1, mm, DEFAULT_CAPACITY, DEFAULT_LOAD_FACTOR);
}
// Value length is always zero (not under user's control)
@Override protected boolean valueLengthValid(int valueLength) {
return true;
}
@Override public long ensure(long key1, long key2) {
assert key1 != unassignedSentinel : "ensure() called with key1 == nullKey1 (" + unassignedSentinel + ')';
return super.ensure0(key1, key2);
}
@Override public long get(long key1, long key2) {
assert key1 != unassignedSentinel : "get() called with key1 == nullKey1 (" + unassignedSentinel + ')';
return super.get0(key1, key2);
}
@Override public boolean remove(long key1, long key2) {
assert key1 != unassignedSentinel : "remove() called with key1 == nullKey1 (" + unassignedSentinel + ')';
return super.remove0(key1, key2);
}
}