Mercurial > repos > deepakjadmin > mayatool3_test3
view mayachemtools/docs/modules/html/code/DBUtil.html @ 9:ab29fa5c8c1f draft default tip
Uploaded
| author | deepakjadmin |
|---|---|
| date | Thu, 15 Dec 2016 14:18:03 -0500 |
| parents | 73ae111cf86f |
| children |
line wrap: on
line source
<html> <head> <title>MayaChemTools:Code:DBUtil.pm</title> <meta http-equiv="content-type" content="text/html;charset=utf-8"> <link rel="stylesheet" type="text/css" href="../../../css/MayaChemToolsCode.css"> </head> <body leftmargin="20" rightmargin="20" topmargin="10" bottommargin="10"> <br/> <center> <a href="http://www.mayachemtools.org" title="MayaChemTools Home"><img src="../../../images/MayaChemToolsLogo.gif" border="0" alt="MayaChemTools"></a> </center> <br/> <pre> <a name="package-DBUtil-"></a> 1 <span class="k">package </span><span class="i">DBUtil</span><span class="sc">;</span> 2 <span class="c">#</span> 3 <span class="c"># $RCSfile: DBUtil.pm,v $</span> 4 <span class="c"># $Date: 2015/02/28 20:47:02 $</span> 5 <span class="c"># $Revision: 1.34 $</span> 6 <span class="c">#</span> 7 <span class="c"># Author: Manish Sud <msud@san.rr.com></span> 8 <span class="c">#</span> 9 <span class="c"># Copyright (C) 2015 Manish Sud. All rights reserved.</span> 10 <span class="c">#</span> 11 <span class="c"># This file is part of MayaChemTools.</span> 12 <span class="c">#</span> 13 <span class="c"># MayaChemTools is free software; you can redistribute it and/or modify it under</span> 14 <span class="c"># the terms of the GNU Lesser General Public License as published by the Free</span> 15 <span class="c"># Software Foundation; either version 3 of the License, or (at your option) any</span> 16 <span class="c"># later version.</span> 17 <span class="c">#</span> 18 <span class="c"># MayaChemTools is distributed in the hope that it will be useful, but without</span> 19 <span class="c"># any warranty; without even the implied warranty of merchantability of fitness</span> 20 <span class="c"># for a particular purpose. See the GNU Lesser General Public License for more</span> 21 <span class="c"># details.</span> 22 <span class="c">#</span> 23 <span class="c"># You should have received a copy of the GNU Lesser General Public License</span> 24 <span class="c"># along with MayaChemTools; if not, see <http://www.gnu.org/licenses/> or</span> 25 <span class="c"># write to the Free Software Foundation Inc., 59 Temple Place, Suite 330,</span> 26 <span class="c"># Boston, MA, 02111-1307, USA.</span> 27 <span class="c">#</span> 28 29 <span class="k">use</span> <span class="w">strict</span><span class="sc">;</span> 30 <span class="k">use</span> <span class="w">Exporter</span><span class="sc">;</span> 31 <span class="k">use</span> <span class="w">Carp</span><span class="sc">;</span> 32 <span class="k">use</span> <span class="w">DBI</span><span class="sc">;</span> 33 <span class="k">use</span> <span class="w">TextUtil</span><span class="sc">;</span> 34 35 <span class="k">use</span> <span class="w">vars</span> <span class="q">qw(@ISA @EXPORT @EXPORT_OK %EXPORT_TAGS)</span><span class="sc">;</span> 36 37 <span class="i">@ISA</span> = <span class="q">qw(Exporter)</span><span class="sc">;</span> 38 <span class="i">@EXPORT</span> = <span class="q">qw(DBConnect DBDisconnect DBFetchSchemaTableNames DBSetupDescribeSQL DBSetupSelectSQL DBSQLToTextFile)</span><span class="sc">;</span> 39 <span class="i">@EXPORT_OK</span> = <span class="q">qw()</span><span class="sc">;</span> 40 <span class="i">%EXPORT_TAGS</span> = <span class="s">(</span><span class="w">all</span> <span class="cm">=></span> <span class="s">[</span><span class="i">@EXPORT</span><span class="cm">,</span> <span class="i">@EXPORT_OK</span><span class="s">]</span><span class="s">)</span><span class="sc">;</span> 41 42 <span class="c"># Connect to a specified database...</span> <a name="DBConnect-"></a> 43 <span class="k">sub </span><span class="m">DBConnect</span> <span class="s">{</span> 44 <span class="k">my</span><span class="s">(</span><span class="i">$DBDriver</span><span class="cm">,</span> <span class="i">$DBName</span><span class="cm">,</span> <span class="i">$DBHost</span><span class="cm">,</span> <span class="i">$DBUser</span><span class="cm">,</span> <span class="i">$DBPassword</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> 45 <span class="k">my</span><span class="s">(</span><span class="i">$DBHandle</span><span class="cm">,</span> <span class="i">$DataSource</span><span class="s">)</span><span class="sc">;</span> 46 47 <span class="k">if</span> <span class="s">(</span><span class="i">$DBDriver</span> <span class="k">eq</span> <span class="q">"Oracle"</span><span class="s">)</span> <span class="s">{</span> 48 <span class="i">$DataSource</span> = <span class="q">qq(DBI:$DBDriver:$DBHost)</span><span class="sc">;</span> 49 <span class="s">}</span> 50 <span class="k">else</span> <span class="s">{</span> 51 <span class="i">$DataSource</span> = <span class="q">qq(DBI:$DBDriver:database=$DBName)</span><span class="sc">;</span> 52 <span class="k">if</span> <span class="s">(</span><span class="i">$DBHost</span><span class="s">)</span> <span class="s">{</span> 53 <span class="i">$DataSource</span> .= <span class="q">qq(;host=$DBHost)</span><span class="sc">;</span> 54 <span class="s">}</span> 55 <span class="s">}</span> 56 57 <span class="c"># Don't raise the error; otherwise, DBI functions termiates on encountering an error.</span> 58 <span class="c"># All terminations decisions are made outside of DBI functions...</span> 59 <span class="i">$DBHandle</span> = <span class="w">DBI</span><span class="w">->connect</span><span class="s">(</span><span class="i">$DataSource</span><span class="cm">,</span> <span class="i">$DBUser</span><span class="cm">,</span> <span class="i">$DBPassword</span><span class="cm">,</span> <span class="s">{</span> <span class="w">RaiseError</span> <span class="cm">=></span> <span class="n">0</span><span class="cm">,</span> <span class="w">AutoCommit</span> <span class="cm">=></span> <span class="n">0</span> <span class="s">}</span><span class="s">)</span> <span class="k">or</span> <span class="w">croak</span> <span class="q">"Couldn't connect to database..."</span><span class="sc">;</span> 60 61 <span class="k">return</span> <span class="i">$DBHandle</span><span class="sc">;</span> 62 <span class="s">}</span> 63 64 <span class="c"># Disconnect from a database...</span> <a name="DBDisconnect-"></a> 65 <span class="k">sub </span><span class="m">DBDisconnect</span> <span class="s">{</span> 66 <span class="k">my</span><span class="s">(</span><span class="i">$DBHandle</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> 67 68 <span class="i">$DBHandle</span><span class="i">->disconnect</span> <span class="k">or</span> <span class="w">carp</span> <span class="q">"Couldn't disconnect from a database..."</span><span class="sc">;</span> 69 <span class="s">}</span> 70 71 <span class="c"># Fetch all table name for a database schema...</span> <a name="DBFetchSchemaTableNames-"></a> 72 <span class="k">sub </span><span class="m">DBFetchSchemaTableNames</span> <span class="s">{</span> 73 <span class="k">my</span><span class="s">(</span><span class="i">$DBDriver</span><span class="cm">,</span> <span class="i">$DBHandle</span><span class="cm">,</span> <span class="i">$SchemaName</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> 74 <span class="k">my</span><span class="s">(</span><span class="i">@SchemaTableNames</span><span class="cm">,</span> <span class="i">$SQL</span><span class="cm">,</span> <span class="i">$SQLHandle</span><span class="s">)</span><span class="sc">;</span> 75 76 <span class="i">@SchemaTableNames</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> 77 78 <span class="i">$SchemaName</span> = <span class="s">(</span><span class="k">defined</span> <span class="i">$SchemaName</span> && <span class="k">length</span> <span class="i">$SchemaName</span><span class="s">)</span> ? <span class="i">$SchemaName</span> <span class="co">:</span> <span class="q">""</span><span class="sc">;</span> 79 80 <span class="k">if</span> <span class="s">(</span><span class="i">$DBDriver</span> <span class="k">eq</span> <span class="q">"mysql"</span><span class="s">)</span> <span class="s">{</span> 81 <span class="c"># Switch schemas...</span> 82 <span class="i">$SQL</span> = <span class="q">qq(USE $SchemaName)</span><span class="sc">;</span> 83 <span class="i">$SQLHandle</span> = <span class="i">$DBHandle</span><span class="i">->prepare</span><span class="s">(</span><span class="i">$SQL</span><span class="s">)</span> <span class="k">or</span> <span class="k">return</span> <span class="i">@SchemaTableNames</span><span class="sc">;</span> 84 <span class="i">$SQLHandle</span><span class="i">->execute</span> <span class="k">or</span> <span class="k">return</span> <span class="i">@SchemaTableNames</span><span class="sc">;</span> 85 <span class="i">$SQLHandle</span><span class="i">->finish</span> <span class="k">or</span> <span class="k">return</span> <span class="i">@SchemaTableNames</span><span class="sc">;</span> 86 87 <span class="c"># Setup to fetch table names...</span> 88 <span class="i">$SQL</span> = <span class="q">qq(SHOW TABLES)</span><span class="sc">;</span> 89 <span class="s">}</span> 90 <span class="k">elsif</span> <span class="s">(</span><span class="i">$DBDriver</span> <span class="k">eq</span> <span class="q">"Oracle"</span><span class="s">)</span> <span class="s">{</span> 91 <span class="i">$SQL</span> = <span class="q">qq(SELECT SEGMENT_NAME FROM DBA_SEGMENTS WHERE OWNER = '$SchemaName' AND SEGMENT_TYPE = 'TABLE' ORDER BY SEGMENT_NAME)</span><span class="sc">;</span> 92 <span class="s">}</span> 93 <span class="k">elsif</span> <span class="s">(</span><span class="i">$DBDriver</span> =~ <span class="q">/^(Pg|Postgres)$/i</span><span class="s">)</span> <span class="s">{</span> 94 <span class="i">$SQL</span> = <span class="q">qq(SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = '$SchemaName')</span><span class="sc">;</span> 95 <span class="s">}</span> 96 <span class="i">$SQLHandle</span> = <span class="i">$DBHandle</span><span class="i">->prepare</span><span class="s">(</span><span class="i">$SQL</span><span class="s">)</span> <span class="k">or</span> <span class="k">return</span> <span class="i">@SchemaTableNames</span><span class="sc">;</span> 97 <span class="i">$SQLHandle</span><span class="i">->execute</span> <span class="k">or</span> <span class="k">return</span> <span class="i">@SchemaTableNames</span><span class="sc">;</span> 98 99 <span class="k">my</span><span class="s">(</span><span class="i">@RowValues</span><span class="cm">,</span> <span class="i">$TableName</span><span class="s">)</span><span class="sc">;</span> 100 <span class="k">while</span> <span class="s">(</span><span class="i">@RowValues</span> = <span class="i">$SQLHandle</span><span class="i">->fetchrow_array</span><span class="s">)</span> <span class="s">{</span> 101 <span class="i">$TableName</span> = <span class="s">(</span><span class="i">$DBDriver</span> =~ <span class="q">/^(mysql|Oracle)$/i</span><span class="s">)</span> ? <span class="k">uc</span><span class="s">(</span><span class="i">$RowValues</span>[<span class="n">0</span>]<span class="s">)</span> <span class="co">:</span> <span class="i">$RowValues</span>[<span class="n">0</span>]<span class="sc">;</span> 102 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$TableName</span> && <span class="k">length</span> <span class="i">$TableName</span><span class="s">)</span> <span class="s">{</span> 103 <span class="k">push</span> <span class="i">@SchemaTableNames</span><span class="cm">,</span> <span class="i">$TableName</span><span class="sc">;</span> 104 <span class="s">}</span> 105 <span class="s">}</span> 106 <span class="i">$SQLHandle</span><span class="i">->finish</span> <span class="k">or</span> <span class="k">return</span> <span class="i">@SchemaTableNames</span><span class="sc">;</span> 107 108 <span class="k">return</span> <span class="i">@SchemaTableNames</span><span class="sc">;</span> 109 <span class="s">}</span> 110 111 <span class="c"># Setup describe SQL statement...</span> <a name="DBSetupDescribeSQL-"></a> 112 <span class="k">sub </span><span class="m">DBSetupDescribeSQL</span> <span class="s">{</span> 113 <span class="k">my</span><span class="s">(</span><span class="i">$DBDriver</span><span class="cm">,</span> <span class="i">$TableName</span><span class="cm">,</span> <span class="i">$SchemaName</span><span class="s">)</span><span class="sc">;</span> 114 <span class="k">my</span><span class="s">(</span><span class="i">$DescribeSQL</span><span class="s">)</span><span class="sc">;</span> 115 116 <span class="i">$DBDriver</span> = <span class="q">""</span><span class="sc">;</span> <span class="i">$TableName</span> = <span class="q">""</span><span class="sc">;</span> <span class="i">$SchemaName</span> = <span class="q">""</span><span class="sc">;</span> 117 <span class="k">if</span> <span class="s">(</span><span class="i">@_</span> == <span class="n">3</span><span class="s">)</span> <span class="s">{</span> 118 <span class="s">(</span><span class="i">$DBDriver</span><span class="cm">,</span> <span class="i">$TableName</span><span class="cm">,</span> <span class="i">$SchemaName</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> 119 <span class="s">}</span> 120 <span class="k">else</span> <span class="s">{</span> 121 <span class="s">(</span><span class="i">$DBDriver</span><span class="cm">,</span> <span class="i">$TableName</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> 122 <span class="s">}</span> 123 <span class="i">$TableName</span> = <span class="s">(</span><span class="k">defined</span> <span class="i">$TableName</span> && <span class="k">length</span> <span class="i">$TableName</span><span class="s">)</span> ? <span class="i">$TableName</span> <span class="co">:</span> <span class="q">""</span><span class="sc">;</span> 124 <span class="i">$SchemaName</span> = <span class="s">(</span><span class="k">defined</span> <span class="i">$SchemaName</span> && <span class="k">length</span> <span class="i">$SchemaName</span><span class="s">)</span> ? <span class="i">$SchemaName</span> <span class="co">:</span> <span class="q">""</span><span class="sc">;</span> 125 126 <span class="i">$DescribeSQL</span> = <span class="s">(</span><span class="i">$SchemaName</span><span class="s">)</span> ? <span class="s">(</span><span class="q">"DESCRIBE "</span> . <span class="q">"$SchemaName"</span> . <span class="q">".$TableName"</span><span class="s">)</span> <span class="co">:</span> <span class="q">"DESCRIBE $TableName"</span><span class="sc">;</span> 127 128 <span class="k">if</span> <span class="s">(</span><span class="i">$DBDriver</span> <span class="k">eq</span> <span class="q">"Oracle"</span><span class="s">)</span> <span class="s">{</span> 129 <span class="i">$DescribeSQL</span> = <span class="q">qq(SELECT COLUMN_NAME "Column_Name", DECODE(NULLABLE, 'N','Not Null','Y','Null') "Null", DATA_TYPE "Data_Type", DATA_LENGTH "Data_Length", DATA_PRECISION "Data_Precision" FROM DBA_TAB_COLUMNS WHERE TABLE_NAME = '$TableName')</span><span class="sc">;</span> 130 <span class="k">if</span> <span class="s">(</span><span class="i">$SchemaName</span><span class="s">)</span> <span class="s">{</span> 131 <span class="i">$DescribeSQL</span> .= <span class="q">qq( AND OWNER = '$SchemaName')</span><span class="sc">;</span> 132 <span class="s">}</span> 133 <span class="i">$DescribeSQL</span> .= <span class="q">qq( ORDER BY COLUMN_ID)</span><span class="sc">;</span> 134 <span class="s">}</span> 135 <span class="k">elsif</span> <span class="s">(</span><span class="i">$DBDriver</span> =~ <span class="q">/^(Pg|Postgres)$/i</span><span class="s">)</span> <span class="s">{</span> 136 <span class="i">$DescribeSQL</span> = <span class="q">qq(SELECT COLUMN_NAME "Column_Name", data_type "Data_Type" FROM information_schema.columns WHERE table_name ='$TableName')</span><span class="sc">;</span> 137 <span class="k">if</span> <span class="s">(</span><span class="i">$SchemaName</span><span class="s">)</span> <span class="s">{</span> 138 <span class="i">$DescribeSQL</span> .= <span class="q">" and table_schema = '$SchemaName'"</span><span class="sc">;</span> 139 <span class="s">}</span> 140 <span class="s">}</span> 141 142 <span class="k">return</span> <span class="i">$DescribeSQL</span><span class="sc">;</span> 143 <span class="s">}</span> 144 145 <span class="c"># Setup describe SQL statement...</span> <a name="DBSetupSelectSQL-"></a> 146 <span class="k">sub </span><span class="m">DBSetupSelectSQL</span> <span class="s">{</span> 147 <span class="k">my</span><span class="s">(</span><span class="i">$DBDriver</span><span class="cm">,</span> <span class="i">$TableName</span><span class="cm">,</span> <span class="i">$SchemaName</span><span class="s">)</span><span class="sc">;</span> 148 <span class="k">my</span><span class="s">(</span><span class="i">$SelectSQL</span><span class="s">)</span><span class="sc">;</span> 149 150 <span class="i">$DBDriver</span> = <span class="q">""</span><span class="sc">;</span> <span class="i">$TableName</span> = <span class="q">""</span><span class="sc">;</span> <span class="i">$SchemaName</span> = <span class="q">""</span><span class="sc">;</span> 151 <span class="k">if</span> <span class="s">(</span><span class="i">@_</span> == <span class="n">3</span><span class="s">)</span> <span class="s">{</span> 152 <span class="s">(</span><span class="i">$DBDriver</span><span class="cm">,</span> <span class="i">$TableName</span><span class="cm">,</span> <span class="i">$SchemaName</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> 153 <span class="s">}</span> 154 <span class="k">else</span> <span class="s">{</span> 155 <span class="s">(</span><span class="i">$DBDriver</span><span class="cm">,</span> <span class="i">$TableName</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> 156 <span class="s">}</span> 157 <span class="i">$TableName</span> = <span class="s">(</span><span class="k">defined</span> <span class="i">$TableName</span> && <span class="k">length</span> <span class="i">$TableName</span><span class="s">)</span> ? <span class="i">$TableName</span> <span class="co">:</span> <span class="q">""</span><span class="sc">;</span> 158 <span class="i">$SchemaName</span> = <span class="s">(</span><span class="k">defined</span> <span class="i">$SchemaName</span> && <span class="k">length</span> <span class="i">$SchemaName</span><span class="s">)</span> ? <span class="i">$SchemaName</span> <span class="co">:</span> <span class="q">""</span><span class="sc">;</span> 159 160 <span class="i">$SelectSQL</span> = <span class="s">(</span><span class="i">$SchemaName</span><span class="s">)</span> ? <span class="s">(</span><span class="q">"SELECT * FROM "</span> . <span class="q">"$SchemaName"</span> . <span class="q">".$TableName"</span><span class="s">)</span> <span class="co">:</span> <span class="q">"SELECT * FROM $TableName"</span><span class="sc">;</span> 161 162 <span class="k">return</span> <span class="i">$SelectSQL</span><span class="sc">;</span> 163 <span class="s">}</span> 164 165 <span class="c"># Prepare and execute a SQL statement and write out results into</span> 166 <span class="c"># a text file.</span> <a name="DBSQLToTextFile-"></a> 167 <span class="k">sub </span><span class="m">DBSQLToTextFile</span> <span class="s">{</span> 168 <span class="k">my</span><span class="s">(</span><span class="i">$DBHandle</span><span class="cm">,</span> <span class="i">$SQL</span><span class="cm">,</span> <span class="i">$TextFile</span><span class="cm">,</span> <span class="i">$OutDelim</span><span class="cm">,</span> <span class="i">$OutQuote</span><span class="cm">,</span> <span class="i">$ExportDataLabels</span><span class="cm">,</span> <span class="i">$ExportLOBs</span><span class="cm">,</span> <span class="i">$ReplaceNullStr</span><span class="s">)</span><span class="sc">;</span> 169 <span class="k">my</span><span class="s">(</span><span class="i">$SQLHandle</span><span class="cm">,</span> <span class="i">$Status</span><span class="s">)</span><span class="sc">;</span> 170 171 <span class="i">$Status</span> = <span class="n">1</span><span class="sc">;</span> 172 <span class="i">$ExportDataLabels</span> = <span class="n">1</span><span class="sc">;</span> 173 <span class="i">$ExportLOBs</span> = <span class="n">0</span><span class="sc">;</span> 174 <span class="i">$ReplaceNullStr</span> = <span class="q">""</span><span class="sc">;</span> 175 <span class="k">if</span> <span class="s">(</span><span class="i">@_</span> == <span class="n">8</span><span class="s">)</span> <span class="s">{</span> 176 <span class="s">(</span><span class="i">$DBHandle</span><span class="cm">,</span> <span class="i">$SQL</span><span class="cm">,</span> <span class="i">$TextFile</span><span class="cm">,</span> <span class="i">$OutDelim</span><span class="cm">,</span> <span class="i">$OutQuote</span><span class="cm">,</span> <span class="i">$ExportDataLabels</span><span class="cm">,</span> <span class="i">$ExportLOBs</span><span class="cm">,</span> <span class="i">$ReplaceNullStr</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> 177 <span class="s">}</span> 178 <span class="k">elsif</span> <span class="s">(</span><span class="i">@_</span> == <span class="n">7</span><span class="s">)</span> <span class="s">{</span> 179 <span class="s">(</span><span class="i">$DBHandle</span><span class="cm">,</span> <span class="i">$SQL</span><span class="cm">,</span> <span class="i">$TextFile</span><span class="cm">,</span> <span class="i">$OutDelim</span><span class="cm">,</span> <span class="i">$OutQuote</span><span class="cm">,</span> <span class="i">$ExportDataLabels</span><span class="cm">,</span> <span class="i">$ExportLOBs</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> 180 <span class="s">}</span> 181 <span class="k">elsif</span> <span class="s">(</span><span class="i">@_</span> == <span class="n">6</span><span class="s">)</span> <span class="s">{</span> 182 <span class="s">(</span><span class="i">$DBHandle</span><span class="cm">,</span> <span class="i">$SQL</span><span class="cm">,</span> <span class="i">$TextFile</span><span class="cm">,</span> <span class="i">$OutDelim</span><span class="cm">,</span> <span class="i">$OutQuote</span><span class="cm">,</span> <span class="i">$ExportDataLabels</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> 183 <span class="s">}</span> 184 <span class="k">else</span> <span class="s">{</span> 185 <span class="s">(</span><span class="i">$DBHandle</span><span class="cm">,</span> <span class="i">$SQL</span><span class="cm">,</span> <span class="i">$TextFile</span><span class="cm">,</span> <span class="i">$OutDelim</span><span class="cm">,</span> <span class="i">$OutQuote</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> 186 <span class="s">}</span> 187 188 <span class="c"># Execute SQL statement...</span> 189 <span class="i">$SQLHandle</span> = <span class="i">$DBHandle</span><span class="i">->prepare</span><span class="s">(</span><span class="i">$SQL</span><span class="s">)</span> <span class="k">or</span> <span class="k">return</span> <span class="i">$Status</span><span class="sc">;</span> 190 <span class="i">$SQLHandle</span><span class="i">->execute</span><span class="s">(</span><span class="s">)</span> <span class="k">or</span> <span class="k">return</span> <span class="i">$Status</span><span class="sc">;</span> 191 192 <span class="k">my</span><span class="s">(</span><span class="i">$FieldsNum</span><span class="cm">,</span> <span class="i">@FieldNames</span><span class="cm">,</span> <span class="i">@RowValues</span><span class="cm">,</span> <span class="i">@ColNumsToExport</span><span class="cm">,</span> <span class="i">@ColLabels</span><span class="cm">,</span> <span class="i">$ColNum</span><span class="cm">,</span> <span class="i">$ColLabelsLine</span><span class="cm">,</span> <span class="i">@Values</span><span class="cm">,</span> <span class="i">$Value</span><span class="cm">,</span> <span class="i">$ValuesLine</span><span class="s">)</span><span class="sc">;</span> 193 194 <span class="i">$Status</span> = <span class="n">0</span><span class="sc">;</span> 195 <span class="c"># Figure out which column numbers need to be exported...</span> 196 <span class="i">$FieldsNum</span> = <span class="i">$SQLHandle</span>->{<span class="w">NUM_OF_FIELDS</span>}<span class="sc">;</span> 197 <span class="i">@FieldNames</span> = <span class="i">@</span>{<span class="i">$SQLHandle</span>->{<span class="w">NAME</span>}}<span class="sc">;</span> 198 <span class="i">@ColNumsToExport</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> 199 <span class="k">if</span> <span class="s">(</span><span class="i">$ExportLOBs</span><span class="s">)</span> <span class="s">{</span> 200 <span class="i">@ColNumsToExport</span> = <span class="s">(</span><span class="n">0</span> .. <span class="i">$#FieldNames</span><span class="s">)</span><span class="sc">;</span> 201 <span class="s">}</span> 202 <span class="k">else</span> <span class="s">{</span> 203 <span class="k">my</span><span class="s">(</span><span class="i">@FieldTypes</span><span class="cm">,</span> <span class="i">@FieldTypeNames</span><span class="cm">,</span> <span class="i">$Type</span><span class="cm">,</span> <span class="i">$TypeName</span><span class="s">)</span><span class="sc">;</span> 204 <span class="i">@FieldTypes</span> = <span class="i">@</span>{<span class="i">$SQLHandle</span>->{<span class="w">TYPE</span>}}<span class="sc">;</span> 205 <span class="i">@FieldTypeNames</span> = <span class="k">map</span> <span class="s">{</span> <span class="k">scalar</span> <span class="i">$DBHandle</span><span class="i">->type_info</span><span class="s">(</span><span class="i">$_</span><span class="s">)</span>->{<span class="w">TYPE_NAME</span>} <span class="s">}</span> <span class="i">@FieldTypes</span><span class="sc">;</span> 206 <span class="k">for</span> <span class="i">$ColNum</span> <span class="s">(</span><span class="n">0</span> .. <span class="i">$#FieldNames</span><span class="s">)</span> <span class="s">{</span> 207 <span class="k">if</span> <span class="s">(</span><span class="i">$FieldTypeNames</span>[<span class="i">$ColNum</span>] !~ <span class="q">/lob|bytea/i</span> <span class="s">)</span> <span class="s">{</span> 208 <span class="k">push</span> <span class="i">@ColNumsToExport</span><span class="cm">,</span> <span class="i">$ColNum</span><span class="sc">;</span> 209 <span class="s">}</span> 210 <span class="s">}</span> 211 <span class="s">}</span> 212 213 <span class="k">if</span> <span class="s">(</span><span class="i">$ExportDataLabels</span><span class="s">)</span> <span class="s">{</span> 214 <span class="c"># Print out column labels...</span> 215 <span class="i">@ColLabels</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> 216 <span class="k">for</span> <span class="i">$ColNum</span> <span class="s">(</span><span class="i">@ColNumsToExport</span><span class="s">)</span> <span class="s">{</span> 217 <span class="k">push</span> <span class="i">@ColLabels</span><span class="cm">,</span> <span class="i">$FieldNames</span>[<span class="i">$ColNum</span>]<span class="sc">;</span> 218 <span class="s">}</span> 219 <span class="i">$ColLabelsLine</span> = <span class="i">JoinWords</span><span class="s">(</span>\<span class="i">@ColLabels</span><span class="cm">,</span> <span class="i">$OutDelim</span><span class="cm">,</span> <span class="i">$OutQuote</span><span class="s">)</span><span class="sc">;</span> 220 <span class="k">print</span> <span class="i">$TextFile</span> <span class="q">"$ColLabelsLine\n"</span><span class="sc">;</span> 221 <span class="s">}</span> 222 <span class="c"># Print out row values...</span> 223 <span class="k">while</span> <span class="s">(</span><span class="i">@RowValues</span> = <span class="i">$SQLHandle</span><span class="i">->fetchrow_array</span><span class="s">)</span> <span class="s">{</span> 224 <span class="i">@Values</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> 225 <span class="k">for</span> <span class="i">$ColNum</span> <span class="s">(</span><span class="i">@ColNumsToExport</span><span class="s">)</span> <span class="s">{</span> 226 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span><span class="s">(</span><span class="i">$RowValues</span>[<span class="i">$ColNum</span>]<span class="s">)</span> && <span class="k">length</span><span class="s">(</span><span class="i">$RowValues</span>[<span class="i">$ColNum</span>]<span class="s">)</span><span class="s">)</span> <span class="s">{</span> 227 <span class="i">$Value</span> = <span class="i">$RowValues</span>[<span class="i">$ColNum</span>]<span class="sc">;</span> 228 <span class="s">}</span> 229 <span class="k">else</span> <span class="s">{</span> 230 <span class="i">$Value</span> = <span class="i">$ReplaceNullStr</span> ? <span class="i">$ReplaceNullStr</span> <span class="co">:</span> <span class="q">""</span><span class="sc">;</span> 231 <span class="s">}</span> 232 <span class="k">push</span> <span class="i">@Values</span><span class="cm">,</span> <span class="i">$Value</span><span class="sc">;</span> 233 <span class="s">}</span> 234 <span class="i">$ValuesLine</span> = <span class="i">JoinWords</span><span class="s">(</span>\<span class="i">@Values</span><span class="cm">,</span> <span class="i">$OutDelim</span><span class="cm">,</span> <span class="i">$OutQuote</span><span class="s">)</span><span class="sc">;</span> 235 <span class="k">print</span> <span class="i">$TextFile</span> <span class="q">"$ValuesLine\n"</span><span class="sc">;</span> 236 <span class="s">}</span> 237 <span class="i">$SQLHandle</span><span class="i">->finish</span> <span class="k">or</span> <span class="k">return</span> <span class="i">$Status</span><span class="sc">;</span> 238 <span class="i">$Status</span> = <span class="n">0</span><span class="sc">;</span> 239 240 <span class="k">return</span> <span class="i">$Status</span><span class="sc">;</span> 241 <span class="s">}</span> 242 <a name="EOF-"></a></pre> <p> </p> <br /> <center> <img src="../../../images/h2o2.png"> </center> </body> </html>