libraries/tbl_views.lib.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * Set of functions related to applying transformations for VIEWs
   5  *
   6  * @package PhpMyAdmin
   7  */
   8 if (! defined('PHPMYADMIN')) {
   9     exit;
  10 }
  11
  12
  13 /**
  14  * Get the column details of VIEW with its original references
  15  *
  16  * @param string $sql_query    SQL for original resource
  17  * @param array  $view_columns Columns of VIEW if defined new column names
  18  *
  19  * @return array $column_map Details of VIEW columns
  20  */
  21 function PMA_getColumnMap($sql_query, $view_columns)
  22 {
  23
  24     $column_map = array();
  25     // Select query which give results for VIEW
  26     $real_source_result = $GLOBALS['dbi']->tryQuery($sql_query);
  27
  28     if ($real_source_result !== false) {
  29
  30         $real_source_fields_meta = $GLOBALS['dbi']->getFieldsMeta(
  31             $real_source_result
  32         );
  33
  34         if (count($real_source_fields_meta) > 0) {
  35
  36             for ($i=0; $i<count($real_source_fields_meta); $i++) {
  37
  38                 $map = array();
  39                 $map['table_name'] = $real_source_fields_meta[$i]->table;
  40                 $map['refering_column'] = $real_source_fields_meta[$i]->name;
  41
  42                 if (count($view_columns) > 1) {
  43                     $map['real_column'] = $view_columns[$i];
  44                 }
  45
  46                 $column_map[] = $map;
  47
  48             }
  49
  50         }
  51
  52     }
  53     unset($real_source_result);
  54
  55     return $column_map;
  56
  57 }
  58
  59
  60 /**
  61  * Get existing data on tranformations applyed for
  62  * columns in a particular table
  63  *
  64  * @param string $db Database name looking for
  65  *
  66  * @return mysqli_result Result of executed SQL query
  67  */
  68 function PMA_getExistingTranformationData($db)
  69 {
  70     $cfgRelation = PMA_getRelationsParam();
  71
  72     // Get the existing transformation details of the same database
  73     // from pma__column_info table
  74     $pma_transformation_sql = 'SELECT * FROM '
  75         . PMA_Util::backquote($cfgRelation['db']) . '.'
  76         . PMA_Util::backquote($cfgRelation['column_info'])
  77         . ' WHERE `db_name` = \''
  78         . PMA_Util::sqlAddSlashes($db) . '\'';
  79
  80     return $GLOBALS['dbi']->tryQuery($pma_transformation_sql);
  81
  82 }
  83
  84
  85 /**
  86  * Get SQL query for store new transformation details of a VIEW
  87  *
  88  * @param mysqli_result $pma_tranformation_data Result set of SQL execution
  89  * @param array         $column_map             Details of VIEW columns
  90  * @param string        $view_name              Name of the VIEW
  91  * @param string        $db                     Database name of the VIEW
  92  *
  93  * @return string $new_transformations_sql SQL query for new tranformations
  94  */
  95 function PMA_getNewTransformationDataSql(
  96     $pma_tranformation_data, $column_map, $view_name, $db
  97 ) {
  98     $cfgRelation = PMA_getRelationsParam();
  99
 100     // Need to store new transformation details for VIEW
 101     $new_transformations_sql = 'INSERT INTO '
 102         . PMA_Util::backquote($cfgRelation['db']) . '.'
 103         . PMA_Util::backquote($cfgRelation['column_info'])
 104         . ' (`db_name`, `table_name`, `column_name`, `comment`, '
 105         . '`mimetype`, `transformation`, `transformation_options`)'
 106         . ' VALUES ';
 107
 108     $column_count = 0;
 109     $add_comma = false;
 110
 111     while ($data_row = $GLOBALS['dbi']->fetchAssoc($pma_tranformation_data)) {
 112
 113         foreach ($column_map as $column) {
 114
 115             if ($data_row['table_name'] == $column['table_name']
 116                 && $data_row['column_name'] == $column['refering_column']
 117             ) {
 118
 119                 $new_transformations_sql .= $add_comma ? ', ' : '';
 120
 121                 $new_transformations_sql .= '('
 122                     . '\'' . $db . '\', '
 123                     . '\'' . $view_name . '\', '
 124                     . '\'';
 125
 126                 $new_transformations_sql .= (isset($column['real_column']))
 127                         ? $column['real_column']
 128                         : $column['refering_column'];
 129
 130                 $new_transformations_sql .= '\', '
 131                     . '\'' . $data_row['comment'] . '\', '
 132                     . '\'' . $data_row['mimetype'] . '\', '
 133                     . '\'' . $data_row['transformation'] . '\', '
 134                     . '\''
 135                     . PMA_Util::sqlAddSlashes(
 136                         $data_row['transformation_options']
 137                     )
 138                     . '\')';
 139
 140                 $add_comma = true;
 141                 $column_count++;
 142                 break;
 143
 144             }
 145
 146         }
 147
 148         if ($column_count == count($column_map)) {
 149             break;
 150         }
 151
 152     }
 153
 154     return ($column_count > 0) ? $new_transformations_sql : '';
 155
 156 }
 157
 158
 159 ?>