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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>FastDB: hashtab.h Source File</title><link href="doxygen.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.3.5 --><div class="qindex"><a class="qindex" href="index.html">Main Page</a> | <a class="qindex" href="hierarchy.html">Class Hierarchy</a> | <a class="qindex" href="annotated.html">Class List</a> | <a class="qindex" href="files.html">File List</a> | <a class="qindex" href="functions.html">Class Members</a></div><h1>hashtab.h</h1><div class="fragment"><pre>00001 <span class="comment">//-< HASHTAB.CPP >---------------------------------------------------*--------*</span>00002 <span class="comment">// FastDB Version 1.0 (c) 1999 GARRET * ? *</span>00003 <span class="comment">// (Main Memory Database Management System) * /\| *</span>00004 <span class="comment">// * / \ *</span>00005 <span class="comment">// Created: 20-Nov-98 K.A. Knizhnik * / [] \ *</span>00006 <span class="comment">// Last update: 10-Dec-98 K.A. Knizhnik * GARRET *</span>00007 <span class="comment">//-------------------------------------------------------------------*--------*</span>00008 <span class="comment">// Extensible hash table interface</span>00009 <span class="comment">//-------------------------------------------------------------------*--------*</span>00010 00011 <span class="preprocessor">#ifndef __HASHTAB_H__</span>00012 <span class="preprocessor"></span><span class="preprocessor">#define __HASHTAB_H__</span>00013 <span class="preprocessor"></span>00014 <span class="keyword">class </span>FASTDB_DLL_ENTRY dbHashTableItem { 00015 <span class="keyword">public</span>:00016 oid_t next;00017 oid_t record;00018 nat4 hash;00019 };00020 00021 <span class="keyword">const</span> size_t dbInitHashTableSize = 16*1024-1;00022 00023 00024 <span class="keyword">class </span>FASTDB_DLL_ENTRY dbHashTable { 00025 nat4 size;00026 nat4 used;00027 oid_t page;00028 00029 <span class="keyword">static</span> <span class="keywordtype">unsigned</span> strHashCode(byte* key, <span class="keywordtype">int</span> keylen);00030 <span class="keyword">static</span> <span class="keywordtype">unsigned</span> hashCode(byte* key, <span class="keywordtype">int</span> keylen);00031 <span class="keyword">static</span> <span class="keywordtype">int</span> <span class="keyword">const</span> keySize[];00032 00033 <span class="keyword">public</span>:00034 <span class="keyword">static</span> oid_t allocate(<a class="code" href="classdbDatabase.html">dbDatabase</a>* db, size_t nRows = 0);00035 00036 <span class="keyword">static</span> <span class="keywordtype">void</span> insert(<a class="code" href="classdbDatabase.html">dbDatabase</a>* db, oid_t hashId, 00037 oid_t rowId, <span class="keywordtype">int</span> type, <span class="keywordtype">int</span> sizeofType, <span class="keywordtype">int</span> offs, size_t nRows);00038 00039 <span class="keyword">static</span> <span class="keywordtype">void</span> remove(<a class="code" href="classdbDatabase.html">dbDatabase</a>* db, oid_t hashId, 00040 oid_t rowId, <span class="keywordtype">int</span> type, <span class="keywordtype">int</span> sizeofType, <span class="keywordtype">int</span> offs);00041 00042 <span class="keyword">static</span> <span class="keywordtype">void</span> find(<a class="code" href="classdbDatabase.html">dbDatabase</a>* db, oid_t hashId, <a class="code" href="classdbSearchContext.html">dbSearchContext</a>& sc);00043 00044 <span class="keyword">static</span> <span class="keywordtype">void</span> drop(<a class="code" href="classdbDatabase.html">dbDatabase</a>* db, oid_t hashId);00045 00046 <span class="keyword">static</span> <span class="keywordtype">void</span> purge(<a class="code" href="classdbDatabase.html">dbDatabase</a>* db, oid_t hashId);00047 };00048 00049 <span class="preprocessor">#endif</span></pre></div><hr size="1"><address style="align: right;"><small>Generated on Thu Feb 12 13:04:48 2004 for FastDB by<a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border=0 > </a>1.3.5 </small></address></body></html>⌨️ 快捷键说明
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