Update website

admin/phpMyAdmin/libraries/classes/SystemDatabase.php

@@ -0,0 +1,123 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PhpMyAdmin;
+
+use mysqli_result;
+use function count;
+use function sprintf;
+
+class SystemDatabase
+{
+    /** @var DatabaseInterface */
+    protected $dbi;
+
+    /** @var Relation */
+    private $relation;
+
+    /**
+     * Get instance of SystemDatabase
+     *
+     * @param DatabaseInterface $dbi Database interface for the system database
+     */
+    public function __construct(DatabaseInterface $dbi)
+    {
+        $this->dbi = $dbi;
+        $this->relation = new Relation($this->dbi);
+    }
+
+    /**
+     * Get existing data on transformations applied for
+     * columns in a particular table
+     *
+     * @param string $db Database name looking for
+     *
+     * @return mysqli_result|false Result of executed SQL query
+     */
+    public function getExistingTransformationData($db)
+    {
+        $cfgRelation = $this->relation->getRelationsParam();
+
+        if (! $cfgRelation['mimework']) {
+            return false;
+        }
+
+        // Get the existing transformation details of the same database
+        // from pma__column_info table
+        $pma_transformation_sql = sprintf(
+            "SELECT * FROM %s.%s WHERE `db_name` = '%s'",
+            Util::backquote($cfgRelation['db']),
+            Util::backquote($cfgRelation['column_info']),
+            $this->dbi->escapeString($db)
+        );
+
+        return $this->dbi->tryQuery($pma_transformation_sql);
+    }
+
+    /**
+     * Get SQL query for store new transformation details of a VIEW
+     *
+     * @param object $pma_transformation_data Result set of SQL execution
+     * @param array  $column_map              Details of VIEW columns
+     * @param string $view_name               Name of the VIEW
+     * @param string $db                      Database name of the VIEW
+     *
+     * @return string SQL query for new transformations
+     */
+    public function getNewTransformationDataSql(
+        $pma_transformation_data,
+        array $column_map,
+        $view_name,
+        $db
+    ) {
+        $cfgRelation = $this->relation->getRelationsParam();
+
+        // Need to store new transformation details for VIEW
+        $new_transformations_sql = sprintf(
+            'INSERT INTO %s.%s ('
+            . '`db_name`, `table_name`, `column_name`, '
+            . '`comment`, `mimetype`, `transformation`, '
+            . '`transformation_options`) VALUES',
+            Util::backquote($cfgRelation['db']),
+            Util::backquote($cfgRelation['column_info'])
+        );
+
+        $column_count = 0;
+        $add_comma = false;
+
+        while ($data_row = $this->dbi->fetchAssoc($pma_transformation_data)) {
+            foreach ($column_map as $column) {
+                if ($data_row['table_name'] != $column['table_name']
+                    || $data_row['column_name'] != $column['refering_column']
+                ) {
+                    continue;
+                }
+
+                $new_transformations_sql .= sprintf(
+                    "%s ('%s', '%s', '%s', '%s', '%s', '%s', '%s')",
+                    $add_comma ? ', ' : '',
+                    $db,
+                    $view_name,
+                    $column['real_column'] ?? $column['refering_column'],
+                    $data_row['comment'],
+                    $data_row['mimetype'],
+                    $data_row['transformation'],
+                    $GLOBALS['dbi']->escapeString(
+                        $data_row['transformation_options']
+                    )
+                );
+
+                $add_comma = true;
+                $column_count++;
+                break;
+            }
+
+            if ($column_count == count($column_map)) {
+                break;
+            }
+        }
+
+        return $column_count > 0 ? $new_transformations_sql : '';
+    }
+}