phpmyadmin/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         $nbColumns = count($view_columns);
  35         $nbFields = count($real_source_fields_meta);
  36         if ($nbFields > 0) {
  37
  38             for ($i=0; $i < $nbFields; $i++) {
  39
  40                 $map = array();
  41                 $map['table_name'] = $real_source_fields_meta[$i]->table;
  42                 $map['refering_column'] = $real_source_fields_meta[$i]->name;
  43
  44                 if ($nbColumns > 1) {
  45                     $map['real_column'] = $view_columns[$i];
  46                 }
  47
  48                 $column_map[] = $map;
  49
  50             }
  51
  52         }
  53
  54     }
  55     unset($real_source_result);
  56
  57     return $column_map;
  58
  59 }
  60
  61
  62 /**
  63  * Get existing data on tranformations applyed for
  64  * columns in a particular table
  65  *
  66  * @param string $db Database name looking for
  67  *
  68  * @return mysqli_result Result of executed SQL query
  69  */
  70 function PMA_getExistingTranformationData($db)
  71 {
  72     $cfgRelation = PMA_getRelationsParam();
  73
  74     // Get the existing transformation details of the same database
  75     // from pma__column_info table
  76     $pma_transformation_sql = 'SELECT * FROM '
  77         . PMA_Util::backquote($cfgRelation['db']) . '.'
  78         . PMA_Util::backquote($cfgRelation['column_info'])
  79         . ' WHERE `db_name` = \''
  80         . PMA_Util::sqlAddSlashes($db) . '\'';
  81
  82     return $GLOBALS['dbi']->tryQuery($pma_transformation_sql);
  83
  84 }
  85
  86
  87 /**
  88  * Get SQL query for store new transformation details of a VIEW
  89  *
  90  * @param mysqli_result $pma_tranformation_data Result set of SQL execution
  91  * @param array         $column_map             Details of VIEW columns
  92  * @param string        $view_name              Name of the VIEW
  93  * @param string        $db                     Database name of the VIEW
  94  *
  95  * @return string $new_transformations_sql SQL query for new tranformations
  96  */
  97 function PMA_getNewTransformationDataSql(
  98     $pma_tranformation_data, $column_map, $view_name, $db
  99 ) {
 100     $cfgRelation = PMA_getRelationsParam();
 101
 102     // Need to store new transformation details for VIEW
 103     $new_transformations_sql = 'INSERT INTO '
 104         . PMA_Util::backquote($cfgRelation['db']) . '.'
 105         . PMA_Util::backquote($cfgRelation['column_info'])
 106         . ' (`db_name`, `table_name`, `column_name`, `comment`, '
 107         . '`mimetype`, `transformation`, `transformation_options`)'
 108         . ' VALUES ';
 109
 110     $column_count = 0;
 111     $add_comma = false;
 112
 113     while ($data_row = $GLOBALS['dbi']->fetchAssoc($pma_tranformation_data)) {
 114
 115         foreach ($column_map as $column) {
 116
 117             if ($data_row['table_name'] == $column['table_name']
 118                 && $data_row['column_name'] == $column['refering_column']
 119             ) {
 120
 121                 $new_transformations_sql .= $add_comma ? ', ' : '';
 122
 123                 $new_transformations_sql .= '('
 124                     . '\'' . $db . '\', '
 125                     . '\'' . $view_name . '\', '
 126                     . '\'';
 127
 128                 $new_transformations_sql .= (isset($column['real_column']))
 129                         ? $column['real_column']
 130                         : $column['refering_column'];
 131
 132                 $new_transformations_sql .= '\', '
 133                     . '\'' . $data_row['comment'] . '\', '
 134                     . '\'' . $data_row['mimetype'] . '\', '
 135                     . '\'' . $data_row['transformation'] . '\', '
 136                     . '\''
 137                     . PMA_Util::sqlAddSlashes(
 138                         $data_row['transformation_options']
 139                     )
 140                     . '\')';
 141
 142                 $add_comma = true;
 143                 $column_count++;
 144                 break;
 145
 146             }
 147
 148         }
 149
 150         if ($column_count == count($column_map)) {
 151             break;
 152         }
 153
 154     }
 155
 156     return ($column_count > 0) ? $new_transformations_sql : '';
 157
 158 }
 159
 160
 161 ?>