00001 /* 00002 * HashSet.hpp 00003 * 00004 * Copyright (c) 2000, 2009, Oracle and/or its affiliates. All rights reserved. 00005 * 00006 * Oracle is a registered trademarks of Oracle Corporation and/or its 00007 * affiliates. 00008 * 00009 * This software is the confidential and proprietary information of Oracle 00010 * Corporation. You shall not disclose such confidential and proprietary 00011 * information and shall use it only in accordance with the terms of the 00012 * license agreement you entered into with Oracle. 00013 * 00014 * This notice may not be removed or altered. 00015 */ 00016 #ifndef COH_HASH_SET_HPP 00017 #define COH_HASH_SET_HPP 00018 00019 #include "coherence/lang.ns" 00020 00021 #include "coherence/util/MappedSet.hpp" 00022 00023 COH_OPEN_NAMESPACE2(coherence,util) 00024 00025 00026 /** 00027 * Set implementation which is backed by a HashMap. 00028 * 00029 * @author mf 2008.02.25 00030 */ 00031 class COH_EXPORT HashSet 00032 : public cloneable_spec<HashSet, 00033 extends<MappedSet> > 00034 { 00035 friend class factory<HashSet>; 00036 00037 // ----- constructors --------------------------------------------------- 00038 00039 public: 00040 /** 00041 * Construct a hash set using the specified settings. 00042 * 00043 * @param cInitialBuckets the initial number of hash buckets, 00044 * 0 < n 00045 * @param flLoadFactor the acceptable load factor before resizing 00046 * occurs, 0 < n, such that a load factor 00047 * of 1.0 causes resizing when the number of 00048 * entries exceeds the number of buckets 00049 * @param flGrowthRate the rate of bucket growth when a resize 00050 * occurs, 0 < n, such that a growth rate 00051 * of 1.0 will double the number of buckets: 00052 * bucketcount = bucketcount * (1 + growthrate) 00053 */ 00054 HashSet(size32_t cInitialBuckets = 17, 00055 float32_t flLoadFactor = 1.0F, 00056 float32_t flGrowthRate = 3.0F); 00057 00058 /** 00059 * Copy constructor. 00060 */ 00061 HashSet(const HashSet& that); 00062 }; 00063 00064 COH_CLOSE_NAMESPACE2 00065 00066 #endif // COH_HASH_SET