145 lines
4.6 KiB
PHP
145 lines
4.6 KiB
PHP
<?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\Dbal\ResultInterface;
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use function count;
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use function sprintf;
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class SystemDatabase
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{
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private Relation $relation;
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/**
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* Get instance of SystemDatabase
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*
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* @param DatabaseInterface $dbi Database interface for the system database
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*/
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public function __construct(protected DatabaseInterface $dbi)
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{
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$this->relation = new Relation($this->dbi);
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}
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/**
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* Get existing data on transformations applied for
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* columns in a particular table
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*
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* @param string $db Database name looking for
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*
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* @return ResultInterface|false Result of executed SQL query
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*/
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public function getExistingTransformationData($db): ResultInterface|false
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{
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$browserTransformationFeature = $this->relation->getRelationParameters()->browserTransformationFeature;
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if ($browserTransformationFeature === null) {
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return false;
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}
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// Get the existing transformation details of the same database
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// from pma__column_info table
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$transformationSql = sprintf(
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'SELECT * FROM %s.%s WHERE `db_name` = %s',
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Util::backquote($browserTransformationFeature->database),
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Util::backquote($browserTransformationFeature->columnInfo),
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$this->dbi->quoteString($db),
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);
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return $this->dbi->tryQuery($transformationSql);
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}
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/**
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* Get SQL query for store new transformation details of a VIEW
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*
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* @param ResultInterface $transformationData Result set of SQL execution
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* @param SystemColumn[] $columnMap Details of VIEW columns
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* @param string $viewName Name of the VIEW
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* @param string $db Database name of the VIEW
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*
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* @return string SQL query for new transformations
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*/
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public function getNewTransformationDataSql(
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ResultInterface $transformationData,
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array $columnMap,
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$viewName,
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$db,
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): string {
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$browserTransformationFeature = $this->relation->getRelationParameters()->browserTransformationFeature;
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if ($browserTransformationFeature === null) {
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return '';
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}
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// Need to store new transformation details for VIEW
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$newTransformationsSql = sprintf(
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'INSERT INTO %s.%s ('
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. '`db_name`, `table_name`, `column_name`, '
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. '`comment`, `mimetype`, `transformation`, '
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. '`transformation_options`) VALUES',
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Util::backquote($browserTransformationFeature->database),
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Util::backquote($browserTransformationFeature->columnInfo),
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);
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$columnCount = 0;
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$addComma = false;
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while ($dataRow = $transformationData->fetchAssoc()) {
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foreach ($columnMap as $column) {
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if (
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$dataRow['table_name'] != $column->tableName
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|| $dataRow['column_name'] != $column->referringColumn
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) {
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continue;
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}
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$newTransformationsSql .= sprintf(
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'%s (%s, %s, %s, %s, %s, %s, %s)',
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$addComma ? ', ' : '',
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$this->dbi->quoteString($db),
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$this->dbi->quoteString($viewName),
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$this->dbi->quoteString($column->realColumn ?? $column->referringColumn),
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$this->dbi->quoteString($dataRow['comment']),
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$this->dbi->quoteString($dataRow['mimetype']),
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$this->dbi->quoteString($dataRow['transformation']),
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$this->dbi->quoteString($dataRow['transformation_options']),
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);
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$addComma = true;
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$columnCount++;
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break;
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}
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if ($columnCount === count($columnMap)) {
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break;
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}
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}
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return $columnCount > 0 ? $newTransformationsSql : '';
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}
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/**
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* @param string[] $viewColumns
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*
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* @return SystemColumn[]
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* @psalm-return list<SystemColumn>
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*/
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public function getColumnMapFromSql(string $sqlQuery, array $viewColumns): array
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{
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$result = $this->dbi->tryQuery($sqlQuery);
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if ($result === false) {
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return [];
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}
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$columnMap = [];
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foreach ($this->dbi->getFieldsMeta($result) as $i => $field) {
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$columnMap[] = new SystemColumn($field->table, $field->name, $viewColumns[$i] ?? null);
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}
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return $columnMap;
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}
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}
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