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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>set.h Source File</title><link href="doxygen.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.2.18 --><center><a class="qindex" href="index.html">Main Page</a> &nbsp; <a class="qindex" href="hierarchy.html">Class Hierarchy</a> &nbsp; <a class="qindex" href="annotated.html">Compound List</a> &nbsp; <a class="qindex" href="files.html">File List</a> &nbsp; <a class="qindex" href="functions.html">Compound Members</a> &nbsp; </center><hr><h1>set.h</h1><div class="fragment"><pre>00001 <span class="comment">//-&lt; SET.H &gt;---------------------------------------------------------*--------*</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:     17-Jan-99    K.A. Knizhnik  * / [] \ *</span>00006 <span class="comment">//                          Last update: 25-Jan-99    K.A. Knizhnik  * GARRET *</span>00007 <span class="comment">//-------------------------------------------------------------------*--------*</span>00008 <span class="comment">// Small set implementation. Number of elements in the set should</span>00009 <span class="comment">// not be greater than 64. Template class is used to allow static</span>00010 <span class="comment">// type checking for different sets.</span>00011 <span class="comment">//-------------------------------------------------------------------*--------*</span>00012 00013 <span class="preprocessor">#ifndef __SET_H__</span>00014 <span class="preprocessor"></span><span class="preprocessor">#define __SET_H__</span>00015 <span class="preprocessor"></span>00016 BEGIN_FASTDB_NAMESPACE00017 00023 <span class="keyword">template</span>&lt;<span class="keyword">class</span> T&gt;<a name="l00024"></a><a class="code" href="classdbSet.html">00024</a> <span class="keyword">class </span><a class="code" href="classdbSet.html">dbSet</a> { 00025   <span class="keyword">protected</span>:00026     <span class="keyword">typedef</span> db_int8 set_t;00027     set_t bits;00028   <span class="keyword">public</span>:00029     <a class="code" href="classdbSet.html">dbSet</a>(set_t elements = 0) : bits(elements) {}00030     <a class="code" href="classdbSet.html">dbSet</a>(T elem) : bits((set_t)1 &lt;&lt; elem) {}00031     <a class="code" href="classdbSet.html">dbSet</a>(<a class="code" href="classdbSet.html">dbSet</a> <span class="keyword">const</span>&amp; s) : bits(s.bits) {}00032 00033     <a class="code" href="classdbSet.html">dbSet</a>(T from, T till)  {00034         assert(from &lt;= till);00035         bits = ((set_t)1 &lt;&lt; till &lt;&lt; 1) - ((set_t)1 &lt;&lt; till);00036     }00037 00038     <span class="keywordtype">bool</span> operator == (<a class="code" href="classdbSet.html">dbSet</a> <span class="keyword">const</span>&amp; s)<span class="keyword"> const </span>{00039         <span class="keywordflow">return</span> bits == s.<a class="code" href="classdbSet.html#dbSetn0">bits</a>; 00040     }00041     <span class="keywordtype">bool</span> operator != (<a class="code" href="classdbSet.html">dbSet</a> <span class="keyword">const</span>&amp; s)<span class="keyword"> const </span>{ 00042         <span class="keywordflow">return</span> bits != s.<a class="code" href="classdbSet.html#dbSetn0">bits</a>; 00043     }00044     <span class="keywordtype">bool</span> operator == (T elem)<span class="keyword"> const </span>{ 00045         <span class="keywordflow">return</span> bits == ((set_t)1 &lt;&lt; elem); 00046     }00047     <span class="keywordtype">bool</span> operator != (T elem)<span class="keyword"> const </span>{ 00048         <span class="keywordflow">return</span> bits != ((set_t)1 &lt;&lt; elem); 00049     }00050     <span class="keywordtype">bool</span> operator &lt;= (<a class="code" href="classdbSet.html">dbSet</a> <span class="keyword">const</span>&amp; s)<span class="keyword"> const </span>{ 00051         <span class="keywordflow">return</span> (bits &amp; ~s.<a class="code" href="classdbSet.html#dbSetn0">bits</a>) == 0; 00052     }00053     <span class="keywordtype">bool</span> operator &gt;= (<a class="code" href="classdbSet.html">dbSet</a> <span class="keyword">const</span>&amp; s)<span class="keyword"> const </span>{ 00054         <span class="keywordflow">return</span> (s.<a class="code" href="classdbSet.html#dbSetn0">bits</a> &amp; ~bits) == 0; 00055     }00056     <span class="keywordtype">bool</span> operator &lt; (<a class="code" href="classdbSet.html">dbSet</a> <span class="keyword">const</span>&amp; s)<span class="keyword"> const </span>{ 00057         <span class="keywordflow">return</span> (bits &amp; ~s.<a class="code" href="classdbSet.html#dbSetn0">bits</a>) == 0 &amp;&amp; bits != s.<a class="code" href="classdbSet.html#dbSetn0">bits</a>; 00058     }00059     <span class="keywordtype">bool</span> operator &gt; (<a class="code" href="classdbSet.html">dbSet</a> <span class="keyword">const</span>&amp; s)<span class="keyword"> const </span>{ 00060         <span class="keywordflow">return</span> (s.<a class="code" href="classdbSet.html#dbSetn0">bits</a> &amp; ~bits) == 0 &amp;&amp; bits != s.<a class="code" href="classdbSet.html#dbSetn0">bits</a>; 00061     }00062     <a class="code" href="classdbSet.html">dbSet</a> operator + (<a class="code" href="classdbSet.html">dbSet</a> <span class="keyword">const</span>&amp; s)<span class="keyword"> const </span>{00063         <a class="code" href="classdbSet.html">dbSet</a> result(bits | s.<a class="code" href="classdbSet.html#dbSetn0">bits</a>);00064         <span class="keywordflow">return</span> result;00065     }00066     <a class="code" href="classdbSet.html">dbSet</a> operator + (T elem)<span class="keyword"> const </span>{00067         <a class="code" href="classdbSet.html">dbSet</a> result(bits | ((set_t)1 &lt;&lt; elem));00068         <span class="keywordflow">return</span> result;00069     }00070     <a class="code" href="classdbSet.html">dbSet</a> operator - (<a class="code" href="classdbSet.html">dbSet</a> <span class="keyword">const</span>&amp; s)<span class="keyword"> const </span>{00071         <a class="code" href="classdbSet.html">dbSet</a> result(bits &amp; ~s.<a class="code" href="classdbSet.html#dbSetn0">bits</a>);00072         <span class="keywordflow">return</span> result;00073     }00074     <a class="code" href="classdbSet.html">dbSet</a> operator - (T elem)<span class="keyword"> const </span>{00075         <a class="code" href="classdbSet.html">dbSet</a> result(bits &amp; ~((set_t)1 &lt;&lt; elem));00076         <span class="keywordflow">return</span> result;00077     }00078     <a class="code" href="classdbSet.html">dbSet</a> operator * (<a class="code" href="classdbSet.html">dbSet</a> <span class="keyword">const</span>&amp; s)<span class="keyword"> const </span>{00079         <a class="code" href="classdbSet.html">dbSet</a> result(bits &amp; s.<a class="code" href="classdbSet.html#dbSetn0">bits</a>);00080         <span class="keywordflow">return</span> result;00081     }00082     <a class="code" href="classdbSet.html">dbSet</a> operator * (T elem)<span class="keyword"> const </span>{00083         <a class="code" href="classdbSet.html">dbSet</a> result(bits &amp; ((set_t)1 &lt;&lt; elem));00084         <span class="keywordflow">return</span> result;00085     }                      00086     <span class="keywordtype">bool</span> has(T elem)<span class="keyword"> const </span>{ 00087         <span class="keywordflow">return</span> (bits &amp; ((set_t)1 &lt;&lt; elem)) != 0;00088     }00089     <span class="keywordtype">bool</span> empty() { 00090         <span class="keywordflow">return</span> bits == 0;00091     }00092     <a class="code" href="classdbSet.html">dbSet</a> operator += (T elem) { 00093         bits |= (set_t)1 &lt;&lt; elem;00094         <span class="keywordflow">return</span> *<span class="keyword">this</span>;00095     }00096     <a class="code" href="classdbSet.html">dbSet</a> operator -= (T elem) { 00097         bits &amp;= ~((set_t)1 &lt;&lt; elem);00098         <span class="keywordflow">return</span> *<span class="keyword">this</span>;00099     }00100     <a class="code" href="classdbSet.html">dbSet</a> operator = (<a class="code" href="classdbSet.html">dbSet</a> <span class="keyword">const</span>&amp; s) { 00101         bits = s.<a class="code" href="classdbSet.html#dbSetn0">bits</a>;00102         <span class="keywordflow">return</span> *<span class="keyword">this</span>;00103     }00104     <a class="code" href="classdbSet.html">dbSet</a> operator = (T elem) { 00105         bits = (set_t)1 &lt;&lt; elem;00106         <span class="keywordflow">return</span> *<span class="keyword">this</span>;00107     }00108 00109     <a class="code" href="classdbSet.html">dbSet</a> operator, (<a class="code" href="classdbSet.html">dbSet</a> <span class="keyword">const</span>&amp; s) {00110         <a class="code" href="classdbSet.html">dbSet</a> result(bits | s.<a class="code" href="classdbSet.html#dbSetn0">bits</a>);00111         <span class="keywordflow">return</span> result;00112     }00113     <a class="code" href="classdbSet.html">dbSet</a> operator, (T elem) {00114         <a class="code" href="classdbSet.html">dbSet</a> result(bits | ((set_t)1 &lt;&lt; elem));00115         <span class="keywordflow">return</span> result;00116     }00117         00118     <a class="code" href="classdbQueryExpression.html">dbQueryExpression</a> operator == (<span class="keywordtype">char</span> <span class="keyword">const</span>* field) { 00119         <a class="code" href="classdbQueryExpression.html">dbQueryExpression</a> expr;00120         expr = <a class="code" href="classdbComponent.html">dbComponent</a>(field,<span class="stringliteral">"bits"</span>),<span class="stringliteral">"="</span>,bits;00121         <span class="keywordflow">return</span> expr;00122     }00123     <a class="code" href="classdbQueryExpression.html">dbQueryExpression</a> operator != (<span class="keywordtype">char</span> <span class="keyword">const</span>* field) { 00124         <a class="code" href="classdbQueryExpression.html">dbQueryExpression</a> expr;00125         expr = <a class="code" href="classdbComponent.html">dbComponent</a>(field,<span class="stringliteral">"bits"</span>),<span class="stringliteral">"!="</span>,bits;00126         <span class="keywordflow">return</span> expr;00127     }00128     <a class="code" href="classdbQueryExpression.html">dbQueryExpression</a> operator &lt;= (<span class="keywordtype">char</span> <span class="keyword">const</span>* field) { 00129         <a class="code" href="classdbQueryExpression.html">dbQueryExpression</a> expr;00130         expr = <span class="stringliteral">"(not"</span>,<a class="code" href="classdbComponent.html">dbComponent</a>(field,<span class="stringliteral">"bits"</span>),<span class="stringliteral">"and"</span>,bits,<span class="stringliteral">")=0"</span>;00131         <span class="keywordflow">return</span> expr;00132     }00133     <a class="code" href="classdbQueryExpression.html">dbQueryExpression</a> operator &gt;= (<span class="keywordtype">char</span> <span class="keyword">const</span>* field) { 00134         <a class="code" href="classdbQueryExpression.html">dbQueryExpression</a> expr;00135         expr = <span class="stringliteral">"(not"</span>,bits,<span class="stringliteral">"and"</span>,<a class="code" href="classdbComponent.html">dbComponent</a>(field,<span class="stringliteral">"bits"</span>),<span class="stringliteral">")=0"</span>;00136         <span class="keywordflow">return</span> expr;00137     }00138     <a class="code" href="classdbQueryExpression.html">dbQueryExpression</a> operator &lt; (<span class="keywordtype">char</span> <span class="keyword">const</span>* field) { 00139         <a class="code" href="classdbQueryExpression.html">dbQueryExpression</a> expr;00140         expr = <span class="stringliteral">"(not"</span>,<a class="code" href="classdbComponent.html">dbComponent</a>(field,<span class="stringliteral">"bits"</span>),<span class="stringliteral">"and"</span>,bits,<span class="stringliteral">")=0 and"</span>,00141             <a class="code" href="classdbComponent.html">dbComponent</a>(field,<span class="stringliteral">"bits"</span>),<span class="stringliteral">"!="</span>,bits;00142         <span class="keywordflow">return</span> expr;00143     }00144     <a class="code" href="classdbQueryExpression.html">dbQueryExpression</a> operator &gt; (<span class="keywordtype">char</span> <span class="keyword">const</span>* field) { 00145         <a class="code" href="classdbQueryExpression.html">dbQueryExpression</a> expr;00146         expr = <span class="stringliteral">"(not"</span>,bits,<span class="stringliteral">"and"</span>,<a class="code" href="classdbComponent.html">dbComponent</a>(field,<span class="stringliteral">"bits"</span>),<span class="stringliteral">")=0 and"</span>,00147             <a class="code" href="classdbComponent.html">dbComponent</a>(field,<span class="stringliteral">"bits"</span>),<span class="stringliteral">"!="</span>,bits;00148         <span class="keywordflow">return</span> expr;00149     }00150     <a class="code" href="classdbQueryExpression.html">dbQueryExpression</a> has(<span class="keywordtype">char</span> <span class="keyword">const</span>* field) {00151         <a class="code" href="classdbQueryExpression.html">dbQueryExpression</a> expr;00152         expr = <span class="stringliteral">"("</span>,bits,<span class="stringliteral">"and 2^"</span>,<a class="code" href="classdbComponent.html">dbComponent</a>(field),<span class="stringliteral">") &lt;&gt; 0"</span>;00153         <span class="keywordflow">return</span> expr;00154     }   00155 00156     CLASS_DESCRIPTOR(<a class="code" href="classdbSet.html">dbSet</a>, (FIELD(bits), METHOD(empty)));00157 };00158 00159 END_FASTDB_NAMESPACE00160 00161 <span class="preprocessor">#endif</span></pre></div><hr><address style="align: right;"><small>Generated on Mon Oct 23 13:23:58 2006 for FastDB by<a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border=0 width=110 height=53></a>1.2.18 </small></address></body></html>
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