Peter M. Groen / knowledgetree

Commit 3b0a002423285930cfd9b88737928213b1137cc1

Authored by mukhtar
1 parent 3f7beea4

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git-svn-id: https://kt-dms.svn.sourceforge.net/svnroot/kt-dms/trunk@158 c91229c3-7414-0410-bfa2-8a42b809f60b
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lib/db.inc 0 → 100644
  View file @3b0a002
  1 +<?php
  2 +
  3 +/**
  4 + * class Owl_DB extends DB_Sql
  5 + *
  6 + * This class is used for DB connections
  7 + *
  8 + * @version v 1.1.1.1 2002/12/04
  9 + * @author michael
  10 + * @package Owl
  11 + */
  12 +
  13 +class Owl_DB extends DB_Sql {
  14 +
  15 + /** Class name */
  16 + var $classname = "Owl_DB";
  17 +
  18 + // BEGIN wes changes -- moved these settings to config/owl.php
  19 + // Server where the database resides
  20 +
  21 + /** Host name. Retrieved from config/owl.php */
  22 + var $Host = "";
  23 + /** Database name */
  24 + var $Database = "";
  25 + /** Database user */
  26 + var $User = "";
  27 + /** Database user password */
  28 + var $Password = "";
  29 + /** Query to execute */
  30 + var $sQuery;
  31 + /** Name of table last query was executed on*/
  32 + var $sLastTableName;
  33 + /** Where clause last used in query execution */
  34 + var $sLastWhereClause;
  35 + /** Order by clause last used in query execution */
  36 + var $sLastOrderByClause;
  37 +
  38 + /** Default Constructor */
  39 + function Owl_DB() {
  40 + global $default;
  41 + $this->Host = $default->owl_db_host;
  42 + $this->Database = $default->owl_db_name;
  43 + $this->User = $default->owl_db_user;
  44 + $this->Password = $default->owl_db_pass;
  45 + }
  46 + // END wes changes
  47 +
  48 + /**
  49 + * Create a query from the provided paramaters. The ID column
  50 + * is seleted by default
  51 + *
  52 + * @param $sTableName Table to query
  53 + * @param $aColumns Columns in table
  54 + * @param $sWhereClause Where clause (optional)
  55 + * @param $sOrderByClause Order by clause (optional)
  56 + */
  57 + function createSQLQuery($sTableName, $aColumns, $sWhereClause = null, $sOrderByClause = null) {
  58 + $this->sLastTableName = $sTableName;
  59 + $this->sLastWhereCluase = $sWhereClause;
  60 + $this->sLastOrderByClause = $sOrderByClause;
  61 +
  62 + $this->sQuery = "SELECT ID, ";
  63 +
  64 + for( $i = 0; $i < count($aColumns) - 1; $i++ ) {
  65 + $this->sQuery = $this->sQuery . $aColumns[$i] . ",";
  66 + }
  67 +
  68 + $this->sQuery .= $aColumns[count($aColumns) - 1] . " ";
  69 + $this->sQuery .= "FROM " . $sTableName . " ";
  70 +
  71 + if (isset($sWhereClause)) {
  72 + $this->sQuery .= "WHERE " . $sWhereClause . " ";
  73 + }
  74 +
  75 + if (isset($sOrderByClause)) {
  76 + $this->sQuery .= "ORDER BY " . $sOrderByClause . " ";
  77 + }
  78 +
  79 + $this->query($this->sQuery);
  80 +
  81 + }
  82 +
  83 + /**
  84 + Create a query from the provided paramaters, specifying a limit and an offset.
  85 + The ID column is selected by default
  86 +
  87 + @param $sTableName Table to query
  88 + @param $aColumns Columns in table
  89 + @param $iOffset Offset
  90 + @param $iLimit Limit
  91 + @param $sWhereClause Where clause (optional)
  92 + @param $sOrderByClause Order by clause (optional)
  93 + */
  94 +
  95 + function createSQLQueryWithOffset($sTableName, $aColumns, $iOffset, $iLimit, $sWhereClause = null, $sOrderByClause = null) {
  96 + $this->sLastTableName = $sTableName;
  97 + $this->sLastWhereCluase = $sWhereClause;
  98 + $this->sLastOrderByClause = $sOrderByClause;
  99 +
  100 + $this->sQuery = "SELECT ID, ";
  101 +
  102 + for( $i = 0; $i < count($aColumns) - 1; $i++ ) {
  103 + $this->sQuery = $this->sQuery . $aColumns[$i] . ",";
  104 + }
  105 +
  106 + $this->sQuery .= $aColumns[count($aColumns) - 1] . " ";
  107 + $this->sQuery .= "FROM " . $sTableName . " ";
  108 +
  109 +
  110 +
  111 + if (isset($sWhereClause)) {
  112 + $this->sQuery .= "WHERE " . $sWhereClause . " ";
  113 + }
  114 +
  115 + if (isset($sOrderByClause)) {
  116 + $this->sQuery .= "ORDER BY " . $sOrderByClause . " ";
  117 + }
  118 +
  119 + $this->sQuery .= "LIMIT " . $iOffset . ", " . $iLimit;
  120 + $this->query($this->sQuery);
  121 + }
  122 +
  123 + /**
  124 + * Get the result count for the previously executed query. Meant
  125 + * to be used in conjuction with createSSQLQueryWithOffset so that
  126 + * the total number of results can be calculated
  127 + *
  128 + * @return int row count
  129 + */
  130 + function & getLastQueryResultCount() {
  131 + if (isset($this->sLastTableName)) {
  132 + $sCountResultQuery = "SELECT COUNT(*) AS ResultCount FROM " . $this->sLastTableName;
  133 +
  134 + if (isset($this->sLastWhereClause)) {
  135 + sCountResultQuery . " WHERE " . $this->sLastWhereClause;
  136 + }
  137 + $this->query($sCountResultQuery);
  138 + $this->next_record();
  139 + return $this->f("ResultCount");
  140 + } else {
  141 + return 0;
  142 + }
  143 + }
  144 +
  145 + /**
  146 + * Execute the query and return the results
  147 + *
  148 + * @returns Results of query
  149 + */
  150 + function & getQueryResults() {
  151 + $result = null;
  152 + if (isset($this->sQuery)) {
  153 + $result = $this->query($this->sQuery);
  154 + }
  155 + return $result;
  156 + }
  157 +
  158 + /**
  159 + * Display any database errors encountered
  160 + */
  161 + function haltmsg($msg) {
  162 + printf("</td></table><b>Database error:</b> %s<br>\n", $msg);
  163 + printf("<b>SQL Error</b>: %s (%s)<br>\n",$this->Errno, $this->Error);
  164 + }
  165 +}
  166 +
  167 +?>
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