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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>DMTL: seq_tokenizer.h Source File</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.4.7 --><div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="annotated.html"><span>Classes</span></a></li> <li id="current"><a href="files.html"><span>Files</span></a></li> <li><a href="pages.html"><span>Related Pages</span></a></li> </ul></div><h1>seq_tokenizer.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span><a name="l00002"></a>00002 <span class="comment"> * Copyright (C) 2005 M.J. Zaki <zaki@cs.rpi.edu> Rensselaer Polytechnic Institute</span><a name="l00003"></a>00003 <span class="comment"> * Written by parimi@cs.rpi.edu</span><a name="l00004"></a>00004 <span class="comment"> * Updated by chaojv@cs.rpi.edu, alhasan@cs.rpi.edu, salems@cs.rpi.edu</span><a name="l00005"></a>00005 <span class="comment"> * Modifications:</span><a name="l00006"></a>00006 <span class="comment"> * Added tokenizer properties & FASTA tokenizer -- Zaki, 5/8/06</span><a name="l00007"></a>00007 <span class="comment"> * Added sequence position for induced occurrences -- zaki, 5/11/06</span><a name="l00008"></a>00008 <span class="comment"> *</span><a name="l00009"></a>00009 <span class="comment"> * This program is free software; you can redistribute it and/or</span><a name="l00010"></a>00010 <span class="comment"> * modify it under the terms of the GNU General Public License</span><a name="l00011"></a>00011 <span class="comment"> * as published by the Free Software Foundation; either version 2</span><a name="l00012"></a>00012 <span class="comment"> * of the License, or (at your option) any later version.</span><a name="l00013"></a>00013 <span class="comment"> *</span><a name="l00014"></a>00014 <span class="comment"> * This program is distributed in the hope that it will be useful,</span><a name="l00015"></a>00015 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span><a name="l00016"></a>00016 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span><a name="l00017"></a>00017 <span class="comment"> * GNU General Public License for more details.</span><a name="l00018"></a>00018 <span class="comment"> *</span><a name="l00019"></a>00019 <span class="comment"> * You should have received a copy of the GNU General Public License along</span><a name="l00020"></a>00020 <span class="comment"> * with this program; if not, write to the Free Software Foundation, Inc.,</span><a name="l00021"></a>00021 <span class="comment"> * 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.</span><a name="l00022"></a>00022 <span class="comment"> */</span><a name="l00023"></a>00023 <span class="preprocessor">#ifndef _TOKENIZER</span><a name="l00024"></a>00024 <span class="preprocessor"></span><span class="preprocessor">#define _TOKENIZER</span><a name="l00025"></a>00025 <span class="preprocessor"></span><a name="l00026"></a>00026 <span class="preprocessor">#include "seq_can_code.h"</span><a name="l00027"></a>00027 <span class="preprocessor">#include "adj_list.h"</span><a name="l00028"></a>00028 <a name="l00029"></a>00029 <span class="preprocessor">#include "generic_classes.h"</span><a name="l00030"></a>00030 <span class="preprocessor">#include "tokenizer_utils.h"</span><a name="l00031"></a>00031 <span class="preprocessor">#include "<a class="code" href="element__parser_8h.html">element_parser.h</a>"</span><a name="l00032"></a>00032 <span class="preprocessor">#include "seq_instance.h"</span><a name="l00033"></a>00033 <span class="preprocessor">#include "typedefs.h"</span><a name="l00034"></a>00034 <a name="l00035"></a>00035 <span class="comment">/* NOTE: the parsing scheme reads atmost the first MAXLINE chars of a line</span><a name="l00036"></a>00036 <span class="comment">this can perhaps be improved towards a better one */</span><a name="l00037"></a>00037 <a name="l00045"></a>00045 <span class="keyword">template</span><<span class="keyword">class</span> PP, <span class="keyword">typename</span> MP, <span class="keyword">typename</span> TP, <span class="keyword">typename</span> PAT_ST, <span class="keyword">template</span><<span class="keyword">typename</span>, <span class="keyword">typename</span>, <span class="keyword">typename</span>, <span class="keyword">template</span> <<span class="keyword">typename</span>> <span class="keyword">class </span>> <span class="keyword">class </span>CC, <a name="l00046"></a>00046 template <typename> class ALLOC ><a name="l00047"></a><a class="code" href="classtokenizer_3_01SEQ__PATTERN_00_01DMTL__TKNZ__PROP_00_01ALLOC_01_4.html">00047</a> class <a class="code" href="classtokenizer.html">tokenizer</a><SEQ_PATTERN, DMTL_TKNZ_PROP, ALLOC ><a name="l00048"></a>00048 {<a name="l00049"></a>00049 <a name="l00050"></a>00050 <span class="keyword">public</span>:<a name="l00051"></a>00051 <span class="keyword">typedef</span> <a class="code" href="classpattern__support.html">pattern_support<V_Fkk_MINE_PROP></a> <a class="code" href="classpattern__support.html">PAT_SUP</a>;<a name="l00052"></a>00052 <span class="keyword">typedef</span> <a class="code" href="classvat.html">vat<SEQ_PROP, V_Fkk_MINE_PROP, ALLOC, std::vector ></a> <a class="code" href="classvat.html">VAT</a>;<a name="l00053"></a>00053 <span class="keyword">typedef</span> seq_instance <V_Fkk_MINE_PROP> <a class="code" href="classseq__instance.html">INSTANCE</a>;<a name="l00054"></a>00054 <span class="keyword">typedef</span> <span class="keyword">typename</span> SEQ_PATTERN::VERTEX_T V_T;<a name="l00055"></a>00055 <span class="keyword">typedef</span> <span class="keyword">typename</span> SEQ_PATTERN::EDGE_T E_T;<a name="l00056"></a>00056 <a name="l00057"></a>00057 <a name="l00058"></a><a class="code" href="classtokenizer_3_01SEQ__PATTERN_00_01DMTL__TKNZ__PROP_00_01ALLOC_01_4.html#9254a52c6bfb0c7aa2954e11f8ad7a49">00058</a> <a class="code" href="classtokenizer.html">tokenizer</a>(<span class="keywordtype">int</span> max=LINE_SZ): MAXLINE(max) {} <a name="l00066"></a>00066 <span class="keyword">template</span><<span class="keyword">class</span> SM_T><a name="l00067"></a><a class="code" href="classtokenizer_3_01SEQ__PATTERN_00_01DMTL__TKNZ__PROP_00_01ALLOC_01_4.html#5bc220963689f3174937ababd4f8574a">00067</a> <span class="keywordtype">int</span> parse_next_trans(ifstream& infile, <a class="code" href="classpat__fam.html">pat_fam<SEQ_PATTERN></a>& freq_pats, <a class="code" href="classstorage__manager.html">storage_manager<SEQ_PATTERN, VAT, ALLOC, SM_T></a>& vat_hmap ) {<a name="l00068"></a>00068 <a name="l00069"></a>00069 <span class="keywordtype">char</span>* line=<span class="keyword">new</span> <span class="keywordtype">char</span>[MAXLINE];<a name="l00070"></a>00070 <span class="keywordtype">char</span> word[MAXLINE];<a name="l00071"></a>00071 <span class="keywordtype">char</span>* startline=line;<a name="l00072"></a>00072 <a name="l00073"></a>00073 <span class="keywordtype">int</span> len;<a name="l00074"></a>00074 <span class="keywordtype">int</span> count; <span class="comment">//# of words parsed from line</span><a name="l00075"></a>00075 <span class="keywordtype">int</span> tid=-1, ts=0;<a name="l00076"></a>00076 <span class="keywordtype">int</span> num_items=3; <span class="comment">//# of itemsets on this transaction</span><a name="l00077"></a>00077 <span class="keywordtype">int</span> pos; <span class="comment">//stores starting position of input stream's get pointer</span><a name="l00078"></a>00078 <span class="keywordtype">int</span> sequence_pos = 0; <span class="comment">// position in the sequence</span><a name="l00079"></a>00079 <a name="l00080"></a>00080 <a class="code" href="classvat.html">VAT</a>* svat;<a name="l00081"></a>00081 <a name="l00082"></a>00082 <span class="keywordflow">do</span> {<a name="l00083"></a>00083 pos=infile.tellg();<a name="l00084"></a>00084 line=startline;<a name="l00085"></a>00085 *line=<span class="charliteral">'\0'</span>;<a name="l00086"></a>00086 infile.getline(line, MAXLINE-1);<a name="l00087"></a>00087 len=strlen(line);<a name="l00088"></a>00088 <span class="keywordflow">if</span>(!len || !line) {<a name="l00089"></a>00089 <span class="keyword">delete</span>[] startline;<a name="l00090"></a>00090 <span class="keywordflow">return</span> tid;<a name="l00091"></a>00091 }<a name="l00092"></a>00092 <a name="l00093"></a>00093 line[len++]=<span class="charliteral">'\0'</span>;<a name="l00094"></a>00094 count=0;<a name="l00095"></a>00095 <a name="l00096"></a>00096 <span class="keywordflow">while</span>(count<num_items+3 && line<(startline+len)) {<a name="l00097"></a>00097 <span class="keywordflow">if</span>(!(line=parse_word()(line, word))) {<a name="l00098"></a>00098 <span class="comment">//parse_word() failed</span><a name="l00099"></a>00099 <span class="keyword">delete</span>[] startline;<a name="l00100"></a>00100 <span class="keywordflow">return</span> -1;<a name="l00101"></a>00101 }<a name="l00102"></a>00102 count++;<a name="l00103"></a>00103 <a name="l00104"></a>00104 <span class="keywordflow">switch</span>(count) {<a name="l00105"></a>00105 <span class="keywordflow">case</span> 1:<a name="l00106"></a>00106 <span class="comment">//this is tid/oid</span><a name="l00107"></a>00107 <span class="keywordflow">if</span>(tid!=-1 && tid!=atoi(word)) {<a name="l00108"></a>00108 <span class="comment">// this line is next transaction</span><a name="l00109"></a>00109 infile.seekg(pos);<a name="l00110"></a>00110 <span class="keyword">delete</span>[] startline;<a name="l00111"></a>00111 <span class="keywordflow">return</span> tid;<a name="l00112"></a>00112 }<a name="l00113"></a>00113 tid=atoi(word); <a name="l00114"></a>00114 <span class="keywordflow">break</span>; <a name="l00115"></a>00115 <span class="keywordflow">case</span> 2: <a name="l00116"></a>00116 ts=atoi(word); <span class="comment">//this is timestamp</span><a name="l00117"></a>00117 sequence_pos++; <span class="comment">//this is the position in the seq</span><a name="l00118"></a>00118 <span class="keywordflow">break</span>; <a name="l00119"></a>00119 <span class="keywordflow">case</span> 3:<a name="l00120"></a>00120 <span class="comment">//this is # of elements on line</span><a name="l00121"></a>00121 num_items=atoi(word);<a name="l00122"></a>00122 <span class="keywordflow">break</span>;<a name="l00123"></a>00123 <a name="l00124"></a>00124 <span class="keywordflow">default</span>:<a name="l00125"></a>00125 <span class="comment">//this is an element, insert/append to its VAT</span><a name="l00126"></a>00126 SEQ_PATTERN* p = <span class="keyword">new</span> SEQ_PATTERN();<a name="l00127"></a>00127 <span class="comment">//cout << "WORD " << tid << " " << ts << " " </span><a name="l00128"></a>00128 <span class="comment">// << num_items << " " << word << endl;</span><a name="l00129"></a>00129 V_T v =el_prsr.parse_element(word);<a name="l00130"></a>00130 <a name="l00131"></a>00131 <span class="comment">// Add vertex and update the canonical code.</span><a name="l00132"></a>00132 p->add_vertex(v);<a name="l00133"></a>00133 p->init_canonical_code(v);<a name="l00134"></a>00134 <a name="l00135"></a>00135 <span class="comment">//if p contains a vat in vat_hmap, append tid/ts to the entry</span><a name="l00136"></a>00136 <span class="comment">//else create a new vat and insert it into vat_hmap,</span><a name="l00137"></a>00137 <span class="comment">//and add p to freq_pats</span><a name="l00138"></a>00138 svat=vat_hmap.get_vat(p);<a name="l00139"></a>00139 <span class="comment">//if(vat_hmap.find(p))</span><a name="l00140"></a>00140 <span class="keywordflow">if</span>(svat != NULL) {<a name="l00141"></a>00141 <span class="comment">//vat found, check if this tid exists in it</span><a name="l00142"></a>00142 <a name="l00143"></a>00143 <span class="keyword">typename</span> VAT::IT vit=svat->end()-1;<a name="l00144"></a>00144 <span class="keywordflow">if</span>(vit->first!=tid)<a name="l00145"></a>00145 vit=svat->end();<a name="l00146"></a>00146 <a name="l00147"></a>00147 <a name="l00148"></a>00148 <span class="keywordflow">if</span>(vit!=svat->end())<a name="l00149"></a>00149 <span class="comment">//tid found</span><a name="l00150"></a>00150 vit->second.push_back(<a class="code" href="classseq__instance.html">INSTANCE</a>(ts,sequence_pos));<a name="l00151"></a>00151 <span class="keywordflow">else</span> {<a name="l00152"></a>00152 <span class="comment">//tid not found</span><a name="l00153"></a>00153 <span class="keyword">typename</span> VAT::INSTANCES new_tidlist;<a name="l00154"></a>00154 new_tidlist.push_back(<a class="code" href="classseq__instance.html">INSTANCE</a>(ts,sequence_pos));<a name="l00155"></a>00155 svat->push_back(make_pair(tid, new_tidlist));<a name="l00156"></a>00156 }<a name="l00157"></a>00157 ⌨️ 快捷键说明
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