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1161 lines
42 KiB
1161 lines
42 KiB
2 years ago
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<?php
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declare(strict_types=1);
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namespace PhpMyAdmin;
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use PhpMyAdmin\ConfigStorage\Relation;
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use PhpMyAdmin\Html\Generator;
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use PhpMyAdmin\Query\Compatibility;
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use function __;
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use function _pgettext;
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use function array_merge;
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use function array_pop;
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use function array_unique;
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use function count;
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use function explode;
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use function htmlspecialchars;
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use function implode;
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use function in_array;
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use function intval;
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use function is_array;
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use function json_encode;
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use function mb_strtoupper;
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use function sort;
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use function sprintf;
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use function str_replace;
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use function trim;
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/**
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* Set of functions used for normalization
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*/
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class Normalization
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{
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/**
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* DatabaseInterface instance
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*
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* @var DatabaseInterface
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*/
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private $dbi;
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/** @var Relation */
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private $relation;
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/** @var Transformations */
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private $transformations;
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/** @var Template */
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public $template;
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/**
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* @param DatabaseInterface $dbi DatabaseInterface instance
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* @param Relation $relation Relation instance
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* @param Transformations $transformations Transformations instance
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* @param Template $template Template instance
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*/
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public function __construct(
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DatabaseInterface $dbi,
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Relation $relation,
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Transformations $transformations,
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Template $template
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) {
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$this->dbi = $dbi;
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$this->relation = $relation;
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$this->transformations = $transformations;
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$this->template = $template;
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}
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/**
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* build the html for columns of $colTypeCategory category
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* in form of given $listType in a table
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*
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* @param string $db current database
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* @param string $table current table
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* @param string $colTypeCategory supported all|Numeric|String|Spatial
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* |Date and time using the _pgettext() format
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* @param string $listType type of list to build, supported dropdown|checkbox
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*
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* @return string HTML for list of columns in form of given list types
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*/
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public function getHtmlForColumnsList(
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$db,
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$table,
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$colTypeCategory = 'all',
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$listType = 'dropdown'
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) {
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$columnTypeList = [];
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if ($colTypeCategory !== 'all') {
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$types = $this->dbi->types->getColumns();
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$columnTypeList = $types[$colTypeCategory];
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if (! is_array($columnTypeList)) {
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$columnTypeList = [];
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}
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}
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$this->dbi->selectDb($db);
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$columns = $this->dbi->getColumns($db, $table, true);
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$type = '';
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$selectColHtml = '';
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foreach ($columns as $column => $def) {
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if (isset($def['Type'])) {
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$extractedColumnSpec = Util::extractColumnSpec($def['Type']);
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$type = $extractedColumnSpec['type'];
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}
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if (! empty($columnTypeList) && ! in_array(mb_strtoupper($type), $columnTypeList)) {
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continue;
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}
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if ($listType === 'checkbox') {
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$selectColHtml .= '<input type="checkbox" value="'
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. htmlspecialchars($column) . '">'
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. htmlspecialchars($column) . ' [ '
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. htmlspecialchars($def['Type']) . ' ]<br>';
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} else {
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$selectColHtml .= '<option value="' . htmlspecialchars($column) . ''
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. '">' . htmlspecialchars($column)
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. ' [ ' . htmlspecialchars($def['Type']) . ' ]'
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. '</option>';
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}
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}
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return $selectColHtml;
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}
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/**
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* get the html of the form to add the new column to given table
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*
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* @param int $numFields number of columns to add
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* @param string $db current database
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* @param string $table current table
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* @param array $columnMeta array containing default values for the fields
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*
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* @return string HTML
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*/
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public function getHtmlForCreateNewColumn(
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$numFields,
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$db,
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$table,
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array $columnMeta = []
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) {
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$relationParameters = $this->relation->getRelationParameters();
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$contentCells = [];
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$availableMime = [];
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$mimeMap = [];
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if ($relationParameters->browserTransformationFeature !== null && $GLOBALS['cfg']['BrowseMIME']) {
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$mimeMap = $this->transformations->getMime($db, $table);
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$availableMime = $this->transformations->getAvailableMimeTypes();
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}
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$commentsMap = $this->relation->getComments($db, $table);
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for ($columnNumber = 0; $columnNumber < $numFields; $columnNumber++) {
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$contentCells[$columnNumber] = [
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'column_number' => $columnNumber,
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'column_meta' => $columnMeta,
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'type_upper' => '',
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'length_values_input_size' => 8,
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'length' => '',
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'extracted_columnspec' => [],
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'submit_attribute' => null,
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'comments_map' => $commentsMap,
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'fields_meta' => null,
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'is_backup' => true,
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'move_columns' => [],
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'available_mime' => $availableMime,
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'mime_map' => $mimeMap,
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];
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}
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$charsets = Charsets::getCharsets($this->dbi, $GLOBALS['cfg']['Server']['DisableIS']);
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$collations = Charsets::getCollations($this->dbi, $GLOBALS['cfg']['Server']['DisableIS']);
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$charsetsList = [];
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foreach ($charsets as $charset) {
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$collationsList = [];
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foreach ($collations[$charset->getName()] as $collation) {
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$collationsList[] = [
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'name' => $collation->getName(),
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'description' => $collation->getDescription(),
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];
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}
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$charsetsList[] = [
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'name' => $charset->getName(),
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'description' => $charset->getDescription(),
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'collations' => $collationsList,
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];
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}
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return $this->template->render('columns_definitions/table_fields_definitions', [
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'is_backup' => true,
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'fields_meta' => null,
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'relation_parameters' => $relationParameters,
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'content_cells' => $contentCells,
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'change_column' => $_POST['change_column'] ?? $_GET['change_column'] ?? null,
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'is_virtual_columns_supported' => Compatibility::isVirtualColumnsSupported($this->dbi->getVersion()),
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'browse_mime' => $GLOBALS['cfg']['BrowseMIME'],
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'supports_stored_keyword' => Compatibility::supportsStoredKeywordForVirtualColumns(
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$this->dbi->getVersion()
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),
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'server_version' => $this->dbi->getVersion(),
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'max_rows' => intval($GLOBALS['cfg']['MaxRows']),
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'char_editing' => $GLOBALS['cfg']['CharEditing'],
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'attribute_types' => $this->dbi->types->getAttributes(),
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'privs_available' => $GLOBALS['col_priv'] && $GLOBALS['is_reload_priv'],
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'max_length' => $this->dbi->getVersion() >= 50503 ? 1024 : 255,
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'charsets' => $charsetsList,
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]);
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}
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/**
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* build the html for step 1.1 of normalization
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*
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* @param string $db current database
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* @param string $table current table
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* @param string $normalizedTo up to which step normalization will go,
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* possible values 1nf|2nf|3nf
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*
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* @return string HTML for step 1.1
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*/
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public function getHtmlFor1NFStep1($db, $table, $normalizedTo)
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{
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$step = 1;
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$stepTxt = __('Make all columns atomic');
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$html = "<h3 class='text-center'>"
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. __('First step of normalization (1NF)') . '</h3>';
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$html .= "<div id='mainContent' data-normalizeto='" . $normalizedTo . "'>" .
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'<fieldset class="pma-fieldset">' .
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'<legend>' . __('Step 1.') . $step . ' ' . $stepTxt . '</legend>' .
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'<h4>' . __(
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'Do you have any column which can be split into more than'
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. ' one column? '
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. 'For example: address can be split into street, city, country and zip.'
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)
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. "<br>(<a class='central_columns_dialog' data-maxrows='25' "
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. "data-pick=false href='#'> "
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. __('Show me the central list of columns that are not already in this table') . ' </a>)</h4>'
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. "<p class='cm-em'>" . __(
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'Select a column which can be split into more '
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. 'than one (on select of \'no such column\', it\'ll move to next step).'
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)
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. '</p>'
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. "<div id='extra'>"
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. "<select id='selectNonAtomicCol' name='makeAtomic'>"
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. '<option selected="selected" disabled="disabled">'
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. __('Select one…') . '</option>'
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. "<option value='no_such_col'>" . __('No such column') . '</option>'
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. $this->getHtmlForColumnsList(
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$db,
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$table,
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_pgettext('string types', 'String')
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)
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. '</select>'
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. '<span>' . __('split into ')
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. "</span><input id='numField' type='number' value='2'>"
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. '<input type="submit" class="btn btn-primary" id="splitGo" value="' . __('Go') . '"></div>'
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. "<div id='newCols'></div>"
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. '</fieldset><fieldset class="pma-fieldset tblFooters">'
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. '</fieldset>'
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. '</div>';
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return $html;
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}
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/**
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* build the html contents of various html elements in step 1.2
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*
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* @param string $db current database
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* @param string $table current table
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*
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* @return string[] HTML contents for step 1.2
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*/
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public function getHtmlContentsFor1NFStep2($db, $table)
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{
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$step = 2;
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$stepTxt = __('Have a primary key');
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$primary = Index::getPrimary($table, $db);
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$hasPrimaryKey = '0';
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$legendText = __('Step 1.') . $step . ' ' . $stepTxt;
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$extra = '';
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if ($primary !== false) {
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$headText = __('Primary key already exists.');
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$subText = __('Taking you to next step…');
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$hasPrimaryKey = '1';
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} else {
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$headText = __(
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'There is no primary key; please add one.<br>'
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. 'Hint: A primary key is a column '
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. '(or combination of columns) that uniquely identify all rows.'
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);
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$subText = '<a href="#" id="createPrimaryKey">'
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. Generator::getIcon(
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'b_index_add',
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__(
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'Add a primary key on existing column(s)'
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)
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)
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. '</a>';
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$extra = __('If it\'s not possible to make existing column combinations as primary key') . '<br>'
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. '<a href="#" id="addNewPrimary">'
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. __('+ Add a new primary key column') . '</a>';
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}
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return [
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'legendText' => $legendText,
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'headText' => $headText,
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'subText' => $subText,
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'hasPrimaryKey' => $hasPrimaryKey,
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'extra' => $extra,
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];
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}
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/**
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* build the html contents of various html elements in step 1.4
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*
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* @param string $db current database
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* @param string $table current table
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*
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* @return string[] HTML contents for step 1.4
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*/
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public function getHtmlContentsFor1NFStep4($db, $table)
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{
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$step = 4;
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$stepTxt = __('Remove redundant columns');
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$legendText = __('Step 1.') . $step . ' ' . $stepTxt;
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$headText = __(
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'Do you have a group of columns which on combining gives an existing'
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. ' column? For example, if you have first_name, last_name and'
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. ' full_name then combining first_name and last_name gives full_name'
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. ' which is redundant.'
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);
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$subText = __(
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'Check the columns which are redundant and click on remove. '
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. "If no redundant column, click on 'No redundant column'"
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);
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$extra = $this->getHtmlForColumnsList($db, $table, 'all', 'checkbox') . '<br>'
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. '<input class="btn btn-secondary" type="submit" id="removeRedundant" value="'
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. __('Remove selected') . '">'
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. '<input class="btn btn-secondary" type="submit" value="' . __('No redundant column')
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. '" onclick="goToFinish1NF();">';
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return [
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'legendText' => $legendText,
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'headText' => $headText,
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'subText' => $subText,
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'extra' => $extra,
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];
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}
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/**
|
||
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* build the html contents of various html elements in step 1.3
|
||
|
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*
|
||
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* @param string $db current database
|
||
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* @param string $table current table
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||
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*
|
||
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* @return string[] HTML contents for step 1.3
|
||
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*/
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||
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public function getHtmlContentsFor1NFStep3($db, $table)
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||
|
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{
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$step = 3;
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||
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$stepTxt = __('Move repeating groups');
|
||
|
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$legendText = __('Step 1.') . $step . ' ' . $stepTxt;
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||
|
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$headText = __(
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||
|
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'Do you have a group of two or more columns that are closely '
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||
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. 'related and are all repeating the same attribute? For example, '
|
||
|
|
. 'a table that holds data on books might have columns such as book_id, '
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||
|
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. 'author1, author2, author3 and so on which form a '
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||
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. 'repeating group. In this case a new table (book_id, author) should '
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. 'be created.'
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||
|
|
);
|
||
|
|
$subText = __(
|
||
|
|
'Check the columns which form a repeating group. If no such group, click on \'No repeating group\''
|
||
|
|
);
|
||
|
|
$extra = $this->getHtmlForColumnsList($db, $table, 'all', 'checkbox') . '<br>'
|
||
|
|
. '<input class="btn btn-secondary" type="submit" id="moveRepeatingGroup" value="'
|
||
|
|
. __('Done') . '">'
|
||
|
|
. '<input class="btn btn-secondary" type="submit" value="' . __('No repeating group')
|
||
|
|
. '" onclick="goToStep4();">';
|
||
|
|
$primary = Index::getPrimary($table, $db);
|
||
|
|
$primarycols = $primary === false ? [] : $primary->getColumns();
|
||
|
|
$pk = [];
|
||
|
|
foreach ($primarycols as $col) {
|
||
|
|
$pk[] = $col->getName();
|
||
|
|
}
|
||
|
|
|
||
|
|
return [
|
||
|
|
'legendText' => $legendText,
|
||
|
|
'headText' => $headText,
|
||
|
|
'subText' => $subText,
|
||
|
|
'extra' => $extra,
|
||
|
|
'primary_key' => json_encode($pk),
|
||
|
|
];
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* build html contents for 2NF step 2.1
|
||
|
|
*
|
||
|
|
* @param string $db current database
|
||
|
|
* @param string $table current table
|
||
|
|
*
|
||
|
|
* @return string[] HTML contents for 2NF step 2.1
|
||
|
|
*/
|
||
|
|
public function getHtmlFor2NFstep1($db, $table)
|
||
|
|
{
|
||
|
|
$legendText = __('Step 2.') . '1 ' . __('Find partial dependencies');
|
||
|
|
$primary = Index::getPrimary($table, $db);
|
||
|
|
$primarycols = $primary === false ? [] : $primary->getColumns();
|
||
|
|
$pk = [];
|
||
|
|
$subText = '';
|
||
|
|
$selectPkForm = '';
|
||
|
|
$extra = '';
|
||
|
|
foreach ($primarycols as $col) {
|
||
|
|
$pk[] = $col->getName();
|
||
|
|
$selectPkForm .= '<input type="checkbox" name="pd" value="'
|
||
|
|
. htmlspecialchars($col->getName()) . '">'
|
||
|
|
. htmlspecialchars($col->getName());
|
||
|
|
}
|
||
|
|
|
||
|
|
$key = implode(', ', $pk);
|
||
|
|
if (count($primarycols) > 1) {
|
||
|
|
$this->dbi->selectDb($db);
|
||
|
|
$columns = $this->dbi->getColumnNames($db, $table);
|
||
|
|
if (count($pk) == count($columns)) {
|
||
|
|
$headText = sprintf(
|
||
|
|
__(
|
||
|
|
'No partial dependencies possible as '
|
||
|
|
. 'no non-primary column exists since primary key ( %1$s ) '
|
||
|
|
. 'is composed of all the columns in the table.'
|
||
|
|
),
|
||
|
|
htmlspecialchars($key)
|
||
|
|
) . '<br>';
|
||
|
|
$extra = '<h3>' . __('Table is already in second normal form.')
|
||
|
|
. '</h3>';
|
||
|
|
} else {
|
||
|
|
$headText = sprintf(
|
||
|
|
__(
|
||
|
|
'The primary key ( %1$s ) consists of more than one column '
|
||
|
|
. 'so we need to find the partial dependencies.'
|
||
|
|
),
|
||
|
|
htmlspecialchars($key)
|
||
|
|
) . '<br>' . __('Please answer the following question(s) carefully to obtain a correct normalization.')
|
||
|
|
. '<br><a href="#" id="showPossiblePd">' . __(
|
||
|
|
'+ Show me the possible partial dependencies based on data in the table'
|
||
|
|
) . '</a>';
|
||
|
|
$subText = __(
|
||
|
|
'For each column below, '
|
||
|
|
. 'please select the <b>minimal set</b> of columns among given set '
|
||
|
|
. 'whose values combined together are sufficient'
|
||
|
|
. ' to determine the value of the column.'
|
||
|
|
);
|
||
|
|
$cnt = 0;
|
||
|
|
foreach ($columns as $column) {
|
||
|
|
if (in_array($column, $pk)) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
$cnt++;
|
||
|
|
$extra .= '<b>' . sprintf(
|
||
|
|
__('\'%1$s\' depends on:'),
|
||
|
|
htmlspecialchars($column)
|
||
|
|
) . '</b><br>';
|
||
|
|
$extra .= '<form id="pk_' . $cnt . '" data-colname="'
|
||
|
|
. htmlspecialchars($column) . '" class="smallIndent">'
|
||
|
|
. $selectPkForm . '</form><br><br>';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
$headText = sprintf(
|
||
|
|
__(
|
||
|
|
'No partial dependencies possible as the primary key ( %1$s ) has just one column.'
|
||
|
|
),
|
||
|
|
htmlspecialchars($key)
|
||
|
|
) . '<br>';
|
||
|
|
$extra = '<h3>' . __('Table is already in second normal form.') . '</h3>';
|
||
|
|
}
|
||
|
|
|
||
|
|
return [
|
||
|
|
'legendText' => $legendText,
|
||
|
|
'headText' => $headText,
|
||
|
|
'subText' => $subText,
|
||
|
|
'extra' => $extra,
|
||
|
|
'primary_key' => $key,
|
||
|
|
];
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* build the html for showing the tables to have in order to put current table in 2NF
|
||
|
|
*
|
||
|
|
* @param array $partialDependencies array containing all the dependencies
|
||
|
|
* @param string $table current table
|
||
|
|
*
|
||
|
|
* @return string HTML
|
||
|
|
*/
|
||
|
|
public function getHtmlForNewTables2NF(array $partialDependencies, $table)
|
||
|
|
{
|
||
|
|
$html = '<p><b>' . sprintf(
|
||
|
|
__(
|
||
|
|
'In order to put the '
|
||
|
|
. 'original table \'%1$s\' into Second normal form we need '
|
||
|
|
. 'to create the following tables:'
|
||
|
|
),
|
||
|
|
htmlspecialchars($table)
|
||
|
|
) . '</b></p>';
|
||
|
|
$tableName = $table;
|
||
|
|
$i = 1;
|
||
|
|
foreach ($partialDependencies as $key => $dependents) {
|
||
|
|
$html .= '<p><input type="text" name="' . htmlspecialchars($key)
|
||
|
|
. '" value="' . htmlspecialchars($tableName) . '">'
|
||
|
|
. '( <u>' . htmlspecialchars($key) . '</u>'
|
||
|
|
. (count($dependents) > 0 ? ', ' : '')
|
||
|
|
. htmlspecialchars(implode(', ', $dependents)) . ' )';
|
||
|
|
$i++;
|
||
|
|
$tableName = 'table' . $i;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $html;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* create/alter the tables needed for 2NF
|
||
|
|
*
|
||
|
|
* @param array $partialDependencies array containing all the partial dependencies
|
||
|
|
* @param object $tablesName name of new tables
|
||
|
|
* @param string $table current table
|
||
|
|
* @param string $db current database
|
||
|
|
*
|
||
|
|
* @return array
|
||
|
|
*/
|
||
|
|
public function createNewTablesFor2NF(array $partialDependencies, $tablesName, $table, $db)
|
||
|
|
{
|
||
|
|
$dropCols = false;
|
||
|
|
$nonPKCols = [];
|
||
|
|
$queries = [];
|
||
|
|
$error = false;
|
||
|
|
$headText = '<h3>' . sprintf(
|
||
|
|
__('The second step of normalization is complete for table \'%1$s\'.'),
|
||
|
|
htmlspecialchars($table)
|
||
|
|
) . '</h3>';
|
||
|
|
if (count((array) $partialDependencies) === 1) {
|
||
|
|
return [
|
||
|
|
'legendText' => __('End of step'),
|
||
|
|
'headText' => $headText,
|
||
|
|
'queryError' => $error,
|
||
|
|
];
|
||
|
|
}
|
||
|
|
|
||
|
|
$message = '';
|
||
|
|
$this->dbi->selectDb($db);
|
||
|
|
foreach ($partialDependencies as $key => $dependents) {
|
||
|
|
if ($tablesName->$key != $table) {
|
||
|
|
$keys = explode(', ', $key);
|
||
|
|
$quotedKeys = [];
|
||
|
|
foreach ($keys as $eachKey) {
|
||
|
|
$quotedKeys[] = Util::backquote($eachKey);
|
||
|
|
}
|
||
|
|
|
||
|
|
$backquotedKey = implode(', ', $quotedKeys);
|
||
|
|
|
||
|
|
$quotedDependents = [];
|
||
|
|
foreach ($dependents as $dependent) {
|
||
|
|
$quotedDependents[] = Util::backquote($dependent);
|
||
|
|
}
|
||
|
|
|
||
|
|
$queries[] = 'CREATE TABLE ' . Util::backquote($tablesName->$key)
|
||
|
|
. ' SELECT DISTINCT ' . $backquotedKey
|
||
|
|
. (count($dependents) > 0 ? ', ' : '')
|
||
|
|
. implode(',', $quotedDependents)
|
||
|
|
. ' FROM ' . Util::backquote($table) . ';';
|
||
|
|
$queries[] = 'ALTER TABLE ' . Util::backquote($tablesName->$key)
|
||
|
|
. ' ADD PRIMARY KEY(' . $backquotedKey . ');';
|
||
|
|
$nonPKCols = array_merge($nonPKCols, $dependents);
|
||
|
|
} else {
|
||
|
|
$dropCols = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($dropCols) {
|
||
|
|
$query = 'ALTER TABLE ' . Util::backquote($table);
|
||
|
|
foreach ($nonPKCols as $col) {
|
||
|
|
$query .= ' DROP ' . Util::backquote($col) . ',';
|
||
|
|
}
|
||
|
|
|
||
|
|
$query = trim($query, ', ');
|
||
|
|
$query .= ';';
|
||
|
|
$queries[] = $query;
|
||
|
|
} else {
|
||
|
|
$queries[] = 'DROP TABLE ' . Util::backquote($table);
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ($queries as $query) {
|
||
|
|
if (! $this->dbi->tryQuery($query)) {
|
||
|
|
$message = Message::error(__('Error in processing!'));
|
||
|
|
$message->addMessage(
|
||
|
|
Message::rawError($this->dbi->getError()),
|
||
|
|
'<br><br>'
|
||
|
|
);
|
||
|
|
$error = true;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return [
|
||
|
|
'legendText' => __('End of step'),
|
||
|
|
'headText' => $headText,
|
||
|
|
'queryError' => $error,
|
||
|
|
'extra' => $message,
|
||
|
|
];
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* build the html for showing the new tables to have in order
|
||
|
|
* to put given tables in 3NF
|
||
|
|
*
|
||
|
|
* @param object $dependencies containing all the dependencies
|
||
|
|
* @param array $tables tables formed after 2NF and need to convert to 3NF
|
||
|
|
* @param string $db current database
|
||
|
|
*
|
||
|
|
* @return array containing html and the list of new tables
|
||
|
|
*/
|
||
|
|
public function getHtmlForNewTables3NF($dependencies, array $tables, $db)
|
||
|
|
{
|
||
|
|
$html = '';
|
||
|
|
$i = 1;
|
||
|
|
$newTables = [];
|
||
|
|
foreach ($tables as $table => $arrDependson) {
|
||
|
|
if (count(array_unique($arrDependson)) === 1) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
$primary = Index::getPrimary($table, $db);
|
||
|
|
$primarycols = $primary === false ? [] : $primary->getColumns();
|
||
|
|
$pk = [];
|
||
|
|
foreach ($primarycols as $col) {
|
||
|
|
$pk[] = $col->getName();
|
||
|
|
}
|
||
|
|
|
||
|
|
$html .= '<p><b>' . sprintf(
|
||
|
|
__(
|
||
|
|
'In order to put the '
|
||
|
|
. 'original table \'%1$s\' into Third normal form we need '
|
||
|
|
. 'to create the following tables:'
|
||
|
|
),
|
||
|
|
htmlspecialchars($table)
|
||
|
|
) . '</b></p>';
|
||
|
|
$tableName = $table;
|
||
|
|
$columnList = [];
|
||
|
|
foreach ($arrDependson as $key) {
|
||
|
|
$dependents = $dependencies->$key;
|
||
|
|
if ($key == $table) {
|
||
|
|
$key = implode(', ', $pk);
|
||
|
|
}
|
||
|
|
|
||
|
|
$tmpTableCols = array_merge(explode(', ', $key), $dependents);
|
||
|
|
sort($tmpTableCols);
|
||
|
|
if (in_array($tmpTableCols, $columnList)) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
$columnList[] = $tmpTableCols;
|
||
|
|
$html .= '<p><input type="text" name="'
|
||
|
|
. htmlspecialchars($tableName)
|
||
|
|
. '" value="' . htmlspecialchars($tableName) . '">'
|
||
|
|
. '( <u>' . htmlspecialchars($key) . '</u>'
|
||
|
|
. (count($dependents) > 0 ? ', ' : '')
|
||
|
|
. htmlspecialchars(implode(', ', $dependents)) . ' )';
|
||
|
|
$newTables[$table][$tableName] = [
|
||
|
|
'pk' => $key,
|
||
|
|
'nonpk' => implode(', ', $dependents),
|
||
|
|
];
|
||
|
|
$i++;
|
||
|
|
$tableName = 'table' . $i;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return [
|
||
|
|
'html' => $html,
|
||
|
|
'newTables' => $newTables,
|
||
|
|
'success' => true,
|
||
|
|
];
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* create new tables or alter existing to get 3NF
|
||
|
|
*
|
||
|
|
* @param array $newTables list of new tables to be created
|
||
|
|
* @param string $db current database
|
||
|
|
*
|
||
|
|
* @return array
|
||
|
|
*/
|
||
|
|
public function createNewTablesFor3NF(array $newTables, $db)
|
||
|
|
{
|
||
|
|
$queries = [];
|
||
|
|
$dropCols = false;
|
||
|
|
$error = false;
|
||
|
|
$headText = '<h3>' .
|
||
|
|
__('The third step of normalization is complete.')
|
||
|
|
. '</h3>';
|
||
|
|
if (count($newTables) === 0) {
|
||
|
|
return [
|
||
|
|
'legendText' => __('End of step'),
|
||
|
|
'headText' => $headText,
|
||
|
|
'queryError' => $error,
|
||
|
|
];
|
||
|
|
}
|
||
|
|
|
||
|
|
$message = '';
|
||
|
|
$this->dbi->selectDb($db);
|
||
|
|
foreach ($newTables as $originalTable => $tablesList) {
|
||
|
|
foreach ($tablesList as $table => $cols) {
|
||
|
|
if ($table != $originalTable) {
|
||
|
|
$pkArray = explode(', ', $cols['pk']);
|
||
|
|
$quotedPkArray = [];
|
||
|
|
foreach ($pkArray as $pk) {
|
||
|
|
$quotedPkArray[] = Util::backquote($pk);
|
||
|
|
}
|
||
|
|
|
||
|
|
$quotedPk = implode(', ', $quotedPkArray);
|
||
|
|
|
||
|
|
$nonpkArray = explode(', ', $cols['nonpk']);
|
||
|
|
$quotedNonpkArray = [];
|
||
|
|
foreach ($nonpkArray as $nonpk) {
|
||
|
|
$quotedNonpkArray[] = Util::backquote($nonpk);
|
||
|
|
}
|
||
|
|
|
||
|
|
$quotedNonpk = implode(', ', $quotedNonpkArray);
|
||
|
|
|
||
|
|
$queries[] = 'CREATE TABLE ' . Util::backquote($table)
|
||
|
|
. ' SELECT DISTINCT ' . $quotedPk
|
||
|
|
. ', ' . $quotedNonpk
|
||
|
|
. ' FROM ' . Util::backquote($originalTable) . ';';
|
||
|
|
$queries[] = 'ALTER TABLE ' . Util::backquote($table)
|
||
|
|
. ' ADD PRIMARY KEY(' . $quotedPk . ');';
|
||
|
|
} else {
|
||
|
|
$dropCols = $cols;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($dropCols) {
|
||
|
|
$columns = $this->dbi->getColumnNames($db, $originalTable);
|
||
|
|
$colPresent = array_merge(
|
||
|
|
explode(', ', $dropCols['pk']),
|
||
|
|
explode(', ', $dropCols['nonpk'])
|
||
|
|
);
|
||
|
|
$query = 'ALTER TABLE ' . Util::backquote($originalTable);
|
||
|
|
foreach ($columns as $col) {
|
||
|
|
if (in_array($col, $colPresent)) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
$query .= ' DROP ' . Util::backquote($col) . ',';
|
||
|
|
}
|
||
|
|
|
||
|
|
$query = trim($query, ', ');
|
||
|
|
$query .= ';';
|
||
|
|
$queries[] = $query;
|
||
|
|
} else {
|
||
|
|
$queries[] = 'DROP TABLE ' . Util::backquote($originalTable);
|
||
|
|
}
|
||
|
|
|
||
|
|
$dropCols = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ($queries as $query) {
|
||
|
|
if (! $this->dbi->tryQuery($query)) {
|
||
|
|
$message = Message::error(__('Error in processing!'));
|
||
|
|
$message->addMessage(
|
||
|
|
Message::rawError($this->dbi->getError()),
|
||
|
|
'<br><br>'
|
||
|
|
);
|
||
|
|
$error = true;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return [
|
||
|
|
'legendText' => __('End of step'),
|
||
|
|
'headText' => $headText,
|
||
|
|
'queryError' => $error,
|
||
|
|
'extra' => $message,
|
||
|
|
];
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* move the repeating group of columns to a new table
|
||
|
|
*
|
||
|
|
* @param string $repeatingColumns comma separated list of repeating group columns
|
||
|
|
* @param string $primaryColumns comma separated list of column in primary key
|
||
|
|
* of $table
|
||
|
|
* @param string $newTable name of the new table to be created
|
||
|
|
* @param string $newColumn name of the new column in the new table
|
||
|
|
* @param string $table current table
|
||
|
|
* @param string $db current database
|
||
|
|
*
|
||
|
|
* @return array
|
||
|
|
*/
|
||
|
|
public function moveRepeatingGroup(
|
||
|
|
$repeatingColumns,
|
||
|
|
$primaryColumns,
|
||
|
|
$newTable,
|
||
|
|
$newColumn,
|
||
|
|
$table,
|
||
|
|
$db
|
||
|
|
) {
|
||
|
|
$repeatingColumnsArr = explode(', ', $repeatingColumns);
|
||
|
|
$primaryColumnsArray = explode(',', $primaryColumns);
|
||
|
|
$columns = [];
|
||
|
|
foreach ($primaryColumnsArray as $column) {
|
||
|
|
$columns[] = Util::backquote($column);
|
||
|
|
}
|
||
|
|
|
||
|
|
$primaryColumns = implode(',', $columns);
|
||
|
|
$query1 = 'CREATE TABLE ' . Util::backquote($newTable);
|
||
|
|
$query2 = 'ALTER TABLE ' . Util::backquote($table);
|
||
|
|
$message = Message::success(
|
||
|
|
sprintf(
|
||
|
|
__('Selected repeating group has been moved to the table \'%s\''),
|
||
|
|
htmlspecialchars($table)
|
||
|
|
)
|
||
|
|
);
|
||
|
|
$first = true;
|
||
|
|
$error = false;
|
||
|
|
foreach ($repeatingColumnsArr as $repeatingColumn) {
|
||
|
|
if (! $first) {
|
||
|
|
$query1 .= ' UNION ';
|
||
|
|
}
|
||
|
|
|
||
|
|
$first = false;
|
||
|
|
$quotedRepeatingColumn = Util::backquote($repeatingColumn);
|
||
|
|
$query1 .= ' SELECT ' . $primaryColumns . ',' . $quotedRepeatingColumn
|
||
|
|
. ' as ' . Util::backquote($newColumn)
|
||
|
|
. ' FROM ' . Util::backquote($table);
|
||
|
|
$query2 .= ' DROP ' . $quotedRepeatingColumn . ',';
|
||
|
|
}
|
||
|
|
|
||
|
|
$query2 = trim($query2, ',');
|
||
|
|
$queries = [
|
||
|
|
$query1,
|
||
|
|
$query2,
|
||
|
|
];
|
||
|
|
$this->dbi->selectDb($db);
|
||
|
|
foreach ($queries as $query) {
|
||
|
|
if (! $this->dbi->tryQuery($query)) {
|
||
|
|
$message = Message::error(__('Error in processing!'));
|
||
|
|
$message->addMessage(
|
||
|
|
Message::rawError($this->dbi->getError()),
|
||
|
|
'<br><br>'
|
||
|
|
);
|
||
|
|
$error = true;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return [
|
||
|
|
'queryError' => $error,
|
||
|
|
'message' => $message,
|
||
|
|
];
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* build html for 3NF step 1 to find the transitive dependencies
|
||
|
|
*
|
||
|
|
* @param string $db current database
|
||
|
|
* @param array $tables tables formed after 2NF and need to process for 3NF
|
||
|
|
*
|
||
|
|
* @return string[]
|
||
|
|
*/
|
||
|
|
public function getHtmlFor3NFstep1($db, array $tables)
|
||
|
|
{
|
||
|
|
$legendText = __('Step 3.') . '1 ' . __('Find transitive dependencies');
|
||
|
|
$extra = '';
|
||
|
|
$headText = __('Please answer the following question(s) carefully to obtain a correct normalization.');
|
||
|
|
$subText = __(
|
||
|
|
'For each column below, '
|
||
|
|
. 'please select the <b>minimal set</b> of columns among given set '
|
||
|
|
. 'whose values combined together are sufficient'
|
||
|
|
. ' to determine the value of the column.<br>'
|
||
|
|
. 'Note: A column may have no transitive dependency, '
|
||
|
|
. 'in that case you don\'t have to select any.'
|
||
|
|
);
|
||
|
|
$cnt = 0;
|
||
|
|
foreach ($tables as $table) {
|
||
|
|
$primary = Index::getPrimary($table, $db);
|
||
|
|
$primarycols = $primary === false ? [] : $primary->getColumns();
|
||
|
|
$selectTdForm = '';
|
||
|
|
$pk = [];
|
||
|
|
foreach ($primarycols as $col) {
|
||
|
|
$pk[] = $col->getName();
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->dbi->selectDb($db);
|
||
|
|
$columns = $this->dbi->getColumnNames($db, $table);
|
||
|
|
if (count($columns) - count($pk) <= 1) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ($columns as $column) {
|
||
|
|
if (in_array($column, $pk)) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
$selectTdForm .= '<input type="checkbox" name="pd" value="'
|
||
|
|
. htmlspecialchars($column) . '">'
|
||
|
|
. '<span>' . htmlspecialchars($column) . '</span>';
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ($columns as $column) {
|
||
|
|
if (in_array($column, $pk)) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
$cnt++;
|
||
|
|
$extra .= '<b>' . sprintf(
|
||
|
|
__('\'%1$s\' depends on:'),
|
||
|
|
htmlspecialchars($column)
|
||
|
|
)
|
||
|
|
. '</b><br>';
|
||
|
|
$extra .= '<form id="td_' . $cnt . '" data-colname="'
|
||
|
|
. htmlspecialchars($column) . '" data-tablename="'
|
||
|
|
. htmlspecialchars($table) . '" class="smallIndent">'
|
||
|
|
. $selectTdForm
|
||
|
|
. '</form><br><br>';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($extra == '') {
|
||
|
|
$headText = __(
|
||
|
|
'No Transitive dependencies possible as the table doesn\'t have any non primary key columns'
|
||
|
|
);
|
||
|
|
$subText = '';
|
||
|
|
$extra = '<h3>' . __('Table is already in Third normal form!') . '</h3>';
|
||
|
|
}
|
||
|
|
|
||
|
|
return [
|
||
|
|
'legendText' => $legendText,
|
||
|
|
'headText' => $headText,
|
||
|
|
'subText' => $subText,
|
||
|
|
'extra' => $extra,
|
||
|
|
];
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* get html for options to normalize table
|
||
|
|
*
|
||
|
|
* @return string HTML
|
||
|
|
*/
|
||
|
|
public function getHtmlForNormalizeTable()
|
||
|
|
{
|
||
|
|
$htmlOutput = '<form method="post" action="' . Url::getFromRoute('/normalization')
|
||
|
|
. '" name="normalize" '
|
||
|
|
. 'id="normalizeTable" '
|
||
|
|
. '>'
|
||
|
|
. Url::getHiddenInputs($GLOBALS['db'], $GLOBALS['table'])
|
||
|
|
. '<input type="hidden" name="step1" value="1">';
|
||
|
|
$htmlOutput .= '<fieldset class="pma-fieldset">';
|
||
|
|
$htmlOutput .= '<legend>'
|
||
|
|
. __('Improve table structure (Normalization):') . '</legend>';
|
||
|
|
$htmlOutput .= '<h3>' . __('Select up to what step you want to normalize')
|
||
|
|
. '</h3>';
|
||
|
|
|
||
|
|
$htmlOutput .= '<div><input type="radio" name="normalizeTo" id="normalizeToRadio1" value="1nf" checked>';
|
||
|
|
$htmlOutput .= ' <label for="normalizeToRadio1">';
|
||
|
|
$htmlOutput .= __('First step of normalization (1NF)');
|
||
|
|
$htmlOutput .= '</label></div>';
|
||
|
|
|
||
|
|
$htmlOutput .= '<div><input type="radio" name="normalizeTo" id="normalizeToRadio2" value="2nf">';
|
||
|
|
$htmlOutput .= ' <label for="normalizeToRadio2">';
|
||
|
|
$htmlOutput .= __('Second step of normalization (1NF+2NF)');
|
||
|
|
$htmlOutput .= '</label></div>';
|
||
|
|
|
||
|
|
$htmlOutput .= '<div><input type="radio" name="normalizeTo" id="normalizeToRadio3" value="3nf">';
|
||
|
|
$htmlOutput .= ' <label for="normalizeToRadio3">';
|
||
|
|
$htmlOutput .= __('Third step of normalization (1NF+2NF+3NF)');
|
||
|
|
$htmlOutput .= '</label></div>';
|
||
|
|
|
||
|
|
$htmlOutput .= '</fieldset><fieldset class="pma-fieldset tblFooters">'
|
||
|
|
. "<span class='float-start'>" . __(
|
||
|
|
'Hint: Please follow the procedure carefully in order to obtain correct normalization'
|
||
|
|
) . '</span>'
|
||
|
|
. '<input class="btn btn-primary" type="submit" name="submit_normalize" value="' . __('Go') . '">'
|
||
|
|
. '</fieldset>'
|
||
|
|
. '</form>'
|
||
|
|
. '</div>';
|
||
|
|
|
||
|
|
return $htmlOutput;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* find all the possible partial dependencies based on data in the table.
|
||
|
|
*
|
||
|
|
* @param string $table current table
|
||
|
|
* @param string $db current database
|
||
|
|
*
|
||
|
|
* @return string HTML containing the list of all the possible partial dependencies
|
||
|
|
*/
|
||
|
|
public function findPartialDependencies($table, $db)
|
||
|
|
{
|
||
|
|
$dependencyList = [];
|
||
|
|
$this->dbi->selectDb($db);
|
||
|
|
$columnNames = $this->dbi->getColumnNames($db, $table);
|
||
|
|
$columns = [];
|
||
|
|
foreach ($columnNames as $column) {
|
||
|
|
$columns[] = Util::backquote($column);
|
||
|
|
}
|
||
|
|
|
||
|
|
$totalRowsRes = $this->dbi->fetchResult(
|
||
|
|
'SELECT COUNT(*) FROM (SELECT * FROM '
|
||
|
|
. Util::backquote($table) . ' LIMIT 500) as dt;'
|
||
|
|
);
|
||
|
|
$totalRows = $totalRowsRes[0];
|
||
|
|
$primary = Index::getPrimary($table, $db);
|
||
|
|
$primarycols = $primary === false ? [] : $primary->getColumns();
|
||
|
|
$pk = [];
|
||
|
|
foreach ($primarycols as $col) {
|
||
|
|
$pk[] = Util::backquote($col->getName());
|
||
|
|
}
|
||
|
|
|
||
|
|
$partialKeys = $this->getAllCombinationPartialKeys($pk);
|
||
|
|
$distinctValCount = $this->findDistinctValuesCount(
|
||
|
|
array_unique(
|
||
|
|
array_merge($columns, $partialKeys)
|
||
|
|
),
|
||
|
|
$table
|
||
|
|
);
|
||
|
|
foreach ($columns as $column) {
|
||
|
|
if (in_array($column, $pk)) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ($partialKeys as $partialKey) {
|
||
|
|
if (
|
||
|
|
! $partialKey
|
||
|
|
|| ! $this->checkPartialDependency(
|
||
|
|
$partialKey,
|
||
|
|
$column,
|
||
|
|
$table,
|
||
|
|
$distinctValCount[$partialKey],
|
||
|
|
$distinctValCount[$column],
|
||
|
|
$totalRows
|
||
|
|
)
|
||
|
|
) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
$dependencyList[$partialKey][] = $column;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$html = __('This list is based on a subset of the table\'s data and is not necessarily accurate. ')
|
||
|
|
. '<div class="dependencies_box">';
|
||
|
|
foreach ($dependencyList as $dependon => $colList) {
|
||
|
|
$html .= '<span class="d-block">'
|
||
|
|
. '<input type="button" class="btn btn-secondary pickPd" value="' . __('Pick') . '">'
|
||
|
|
. '<span class="determinants">'
|
||
|
|
. htmlspecialchars(str_replace('`', '', (string) $dependon)) . '</span> -> '
|
||
|
|
. '<span class="dependents">'
|
||
|
|
. htmlspecialchars(str_replace('`', '', implode(', ', $colList)))
|
||
|
|
. '</span>'
|
||
|
|
. '</span>';
|
||
|
|
}
|
||
|
|
|
||
|
|
if (empty($dependencyList)) {
|
||
|
|
$html .= '<p class="d-block m-1">'
|
||
|
|
. __('No partial dependencies found!') . '</p>';
|
||
|
|
}
|
||
|
|
|
||
|
|
$html .= '</div>';
|
||
|
|
|
||
|
|
return $html;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* check whether a particular column is dependent on given subset of primary key
|
||
|
|
*
|
||
|
|
* @param string $partialKey the partial key, subset of primary key,
|
||
|
|
* each column in key supposed to be backquoted
|
||
|
|
* @param string $column backquoted column on whose dependency being checked
|
||
|
|
* @param string $table current table
|
||
|
|
* @param int $pkCnt distinct value count for given partial key
|
||
|
|
* @param int $colCnt distinct value count for given column
|
||
|
|
* @param int $totalRows total distinct rows count of the table
|
||
|
|
*/
|
||
|
|
private function checkPartialDependency(
|
||
|
|
$partialKey,
|
||
|
|
$column,
|
||
|
|
$table,
|
||
|
|
$pkCnt,
|
||
|
|
$colCnt,
|
||
|
|
$totalRows
|
||
|
|
): bool {
|
||
|
|
$query = 'SELECT '
|
||
|
|
. 'COUNT(DISTINCT ' . $partialKey . ',' . $column . ') as pkColCnt '
|
||
|
|
. 'FROM (SELECT * FROM ' . Util::backquote($table)
|
||
|
|
. ' LIMIT 500) as dt;';
|
||
|
|
$res = $this->dbi->fetchResult($query, null, null);
|
||
|
|
$pkColCnt = $res[0];
|
||
|
|
if ($pkCnt && $pkCnt == $colCnt && $colCnt == $pkColCnt) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $totalRows && $totalRows == $pkCnt;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* function to get distinct values count of all the column in the array $columns
|
||
|
|
*
|
||
|
|
* @param array $columns array of backquoted columns whose distinct values
|
||
|
|
* need to be counted.
|
||
|
|
* @param string $table table to which these columns belong
|
||
|
|
*
|
||
|
|
* @return array associative array containing the count
|
||
|
|
*/
|
||
|
|
private function findDistinctValuesCount(array $columns, $table)
|
||
|
|
{
|
||
|
|
$result = [];
|
||
|
|
$query = 'SELECT ';
|
||
|
|
foreach ($columns as $column) {
|
||
|
|
if (! $column) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
//each column is already backquoted
|
||
|
|
$query .= 'COUNT(DISTINCT ' . $column . ') as \''
|
||
|
|
. $column . '_cnt\', ';
|
||
|
|
}
|
||
|
|
|
||
|
|
$query = trim($query, ', ');
|
||
|
|
$query .= ' FROM (SELECT * FROM ' . Util::backquote($table)
|
||
|
|
. ' LIMIT 500) as dt;';
|
||
|
|
$res = $this->dbi->fetchResult($query, null, null);
|
||
|
|
foreach ($columns as $column) {
|
||
|
|
if (! $column) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
$result[$column] = $res[0][$column . '_cnt'] ?? null;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* find all the possible partial keys
|
||
|
|
*
|
||
|
|
* @param array $primaryKey array containing all the column present in primary key
|
||
|
|
*
|
||
|
|
* @return array containing all the possible partial keys(subset of primary key)
|
||
|
|
*/
|
||
|
|
private function getAllCombinationPartialKeys(array $primaryKey)
|
||
|
|
{
|
||
|
|
$results = [''];
|
||
|
|
foreach ($primaryKey as $element) {
|
||
|
|
foreach ($results as $combination) {
|
||
|
|
$results[] = trim($element . ',' . $combination, ',');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
array_pop($results); //remove key which consist of all primary key columns
|
||
|
|
|
||
|
|
return $results;
|
||
|
|
}
|
||
|
|
}
|