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<?php |
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/** |
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* Copyright (C) 2022-2023 Rafael San José Tovar <[email protected]> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <https://www.gnu.org/licenses/>. |
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*/ |
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namespace Alxarafe\Database; |
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use Alxarafe\Core\Singletons\Config; |
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use Alxarafe\Core\Singletons\Debug; |
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use Alxarafe\Core\Singletons\PhpFileCache; |
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use DebugBar\DebugBarException; |
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use Symfony\Component\Yaml\Yaml; |
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use function Alxarafe\Core\Helpers\count; |
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use const Alxarafe\Core\Helpers\DEFAULT_INTEGER_SIZE; |
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use const Alxarafe\Core\Helpers\DEFAULT_STRING_LENGTH; |
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/** |
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* The Schema class contains static methods that allow you to manipulate the |
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* database. It is used to create and modify tables and indexes in the database. |
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*/ |
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class Schema |
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{ |
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public const TYPE_INTEGER = 'integer'; |
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public const TYPE_FLOAT = 'float'; |
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public const TYPE_DECIMAL = 'decimal'; |
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public const TYPE_STRING = 'string'; |
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public const TYPE_TEXT = 'text'; |
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public const TYPE_DATE = 'date'; |
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public const TYPE_TIME = 'time'; |
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public const TYPE_DATETIME = 'datetime'; |
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public const TYPE_BOOLEAN = 'bool'; |
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public const TYPES = [ |
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self::TYPE_INTEGER => ['tinyint', 'smallint', 'mediumint', 'int', 'bigint'], |
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self::TYPE_FLOAT => ['real', 'double'], |
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self::TYPE_DECIMAL => ['decimal', 'numeric'], |
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self::TYPE_STRING => ['char', 'varchar'], |
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self::TYPE_TEXT => ['tinytext', 'text', 'mediumtext', 'longtext', 'blob'], |
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self::TYPE_DATE => ['date'], |
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self::TYPE_TIME => ['time'], |
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self::TYPE_DATETIME => ['datetime', 'timestamp'], |
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self::TYPE_BOOLEAN => ['boolean'], |
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]; |
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public const YAML_CACHE_TABLES_FOLDER = 'models'; |
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/** |
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* Carriage Return and Line Feed |
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*/ |
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const CRLF = "\r\n"; |
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const DB_INDEX_TYPE = 'bigint (20) unsigned'; |
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public static array $tables = []; |
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/** |
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* Contains the database structure data. |
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* Each table is an index of the associative array. |
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* |
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* @var array |
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*/ |
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public static array $bbddStructure; |
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/** |
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* Return true if $tableName exists in database |
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* |
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* @param string $tableName |
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* |
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* @return bool |
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* @throws DebugBarException |
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*/ |
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public static function tableExists($tableName): bool |
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{ |
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$tableNameWithPrefix = Config::$dbPrefix . $tableName; |
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$dbName = Config::$dbName; |
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$sql = "SELECT COUNT(*) AS Total FROM information_schema.tables WHERE table_schema = '{$dbName}' AND table_name='{$tableNameWithPrefix}'"; |
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$data = Engine::select($sql); |
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$result = reset($data); |
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return $result['Total'] === '1'; |
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} |
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private static function getFields($tableName): array |
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{ |
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$yamlFilename = PhpFileCache::getYamlFileName(self::YAML_CACHE_TABLES_FOLDER, $tableName); |
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if (file_exists($yamlFilename)) { |
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return PhpFileCache::loadYamlFile(self::YAML_CACHE_TABLES_FOLDER, $tableName); |
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} |
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if (empty(self::$tables)) { |
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self::$tables = YamlSchema::getTables(); |
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} |
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$yamlSourceFilename = self::$tables[$tableName]; |
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if (!file_exists($yamlSourceFilename)) { |
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dump('No existe el archivo ' . $yamlSourceFilename); |
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} |
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$data = Yaml::parseFile($yamlSourceFilename); |
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$result = []; |
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foreach ($data as $key => $datum) { |
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$datum['key'] = $key; |
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$result[$key] = Schema::normalize($datum); |
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} |
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/* |
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Igual conviene crear una clase: |
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- DBSchema (con los datos de la base de datos real) |
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- DefinedSchema (con los datos definidos) |
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y que Schema cree o adapte según los datos de ambas. Que cada una lleve lo suyo |
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Que el resultado se guarde en el yaml y que se encargue de realizar las conversines |
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oportunas siempre que no suponga una pérdida de datos. |
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*/ |
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return $result; |
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} |
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private static function getIndexes($tableName): array |
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{ |
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$result = []; |
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return $result; |
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} |
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private static function getRelated($tableName): array |
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{ |
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$result = []; |
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return $result; |
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} |
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private static function getSeed($tableName): array |
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{ |
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$result = []; |
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return $result; |
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} |
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public static function checkStructure(string $tableName, bool $create) |
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{ |
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if (!empty(self::$bbddStructure[$tableName])) { |
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return; |
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} |
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$structure = []; |
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$structure['fields'] = self::getFields($tableName); |
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$structure['indexes'] = self::getIndexes($tableName); |
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$structure['related'] = self::getRelated($tableName); |
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if ($create) { |
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$structure['seed'] = self::getSeed($tableName); |
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} |
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self::$bbddStructure[$tableName] = $structure; |
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} |
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private static function getTypeOf(string $type): string |
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{ |
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foreach (self::TYPES as $index => $types) { |
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if (in_array(strtolower($type), $types)) { |
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return $index; |
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} |
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} |
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Debug::addMessage('messages', $type . ' not found in DBSchema::getTypeOf()'); |
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return 'text'; |
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} |
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private static function splitType(string $originalType): array |
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{ |
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$replacesSources = [ |
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'character varying', |
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// 'timestamp without time zone', |
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'double precision', |
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]; |
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$replacesDestination = [ |
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'varchar', |
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// 'timestamp', |
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'double', |
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]; |
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$modifiedType = (str_replace($replacesSources, $replacesDestination, $originalType)); |
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if ($originalType !== $modifiedType) { |
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Debug::addMessage('messages', "XML: Uso de '{$originalType}' en lugar de '{$modifiedType}'."); |
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} |
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$explode = explode(' ', strtolower($modifiedType)); |
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$pos = strpos($explode[0], '('); |
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if ($pos > 0) { |
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$begin = $pos + 1; |
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$end = strpos($explode[0], ')'); |
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$type = substr($explode[0], 0, $pos); |
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$length = substr($explode[0], $begin, $end - $begin); |
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} else { |
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$type = $explode[0]; |
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$length = null; |
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} |
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$pos = array_search('unsigned', $explode, true); |
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$unsigned = $pos ? 'yes' : 'no'; |
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$pos = array_search('zerofill', $explode, true); |
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$zerofill = $pos ? 'yes' : 'no'; |
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return ['type' => $type, 'length' => $length, 'unsigned' => $unsigned, 'zerofill' => $zerofill]; |
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} |
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/** |
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* Toma los datos del fichero de definición de una tabla y genera el definitivo. |
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* |
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* @author Rafael San José Tovar <[email protected]> |
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* @version 2022.1224 |
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* |
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* @param array $structure |
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* |
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* @return array |
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*/ |
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protected static function normalize(array $structure): array |
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{ |
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$column = []; |
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$key = (string) $structure['key']; |
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$type = (string) $structure['type']; |
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$column['key'] = $key; |
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/** |
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* Entrada: |
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* - type es el tipo lógico del campo y tiene que estar definido como índice en |
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* TYPES, o ser uno de los predefinidos como 'autoincrement', 'relationship', etc. |
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* |
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* Salida: |
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* - type queda intacto. |
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* - dbtype es como queda definido en la tabla, por ejemplo, varchar(20) |
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* - realtype es el tipo resultado, por ejemplo varchar (sin el tamaño) |
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* - generictype es uno de los índices de TYPE. P.E. autoincrement se cambiará por integer |
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* |
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*/ |
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$column['type'] = $type; |
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switch ($type) { |
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case 'autoincrement': |
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case 'relationship': |
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$colType = self::DB_INDEX_TYPE; |
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break; |
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case 'boolean': |
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$colType = 'tinyint(1) unsigned'; |
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break; |
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default: |
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$colType = $type; |
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} |
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$typeArray = static::splitType($colType); |
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/** |
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* ^ array:4 [▼ |
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* "type" => "bigint" |
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* "length" => null |
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* "unsigned" => "yes" |
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* "zerofill" => "no" |
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* ] |
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*/ |
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$type = $typeArray['type']; |
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$length = $typeArray['length'] ?? $structure['length']; |
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$unsigned = $typeArray['unsigned'] === 'yes'; |
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$zerofill = $typeArray['zerofill'] === 'yes'; |
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$genericType = static::getTypeOf($type); |
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$column['dbtype'] = $colType; |
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$column['realtype'] = $type; |
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$column['generictype'] = $genericType; |
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$column['null'] = 'YES'; |
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if ($structure['null'] && mb_strtolower($structure['null']) == 'no') { |
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$column['null'] = 'NO'; |
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} |
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if (empty($structure['default'])) { |
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$column['default'] = null; |
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} else { |
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$column['default'] = (string) $structure['default']; |
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} |
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/** |
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* Pueden existir otras definiciones de limitaciones físicas como min y max |
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* De existir, tienen que ser contempladas en el método test y tener mayor peso que |
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* la limitación en plantilla. |
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*/ |
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foreach (['min', 'max'] as $field) { |
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if (isset($structure[$field])) { |
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$column[$field] = (string) $structure[$field]; |
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} |
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} |
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if (isset($structure['comment'])) { |
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$column['comentario'] = (string) $structure['comment']; |
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} |
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if (isset($structure['default'])) { |
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$column['default'] = trim($structure['default'], " \"'`"); |
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} |
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switch ($genericType) { |
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case 'text': |
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$column['dbtype'] = 'varchar(' . $length . ')'; |
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$column['maxlength'] = $length; |
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break; |
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case 'integer': |
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/** |
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|
* Lo primero es ver la capacidad física máxima según el tipo de dato. |
|
316
|
|
|
*/ |
|
317
|
|
|
$bytes = 4; |
|
318
|
|
|
switch ($type) { |
|
319
|
|
|
case 'tinyint': |
|
320
|
|
|
$bytes = 1; |
|
321
|
|
|
break; |
|
322
|
|
|
case 'smallint': |
|
323
|
|
|
$bytes = 2; |
|
324
|
|
|
break; |
|
325
|
|
|
case 'mediumint': |
|
326
|
|
|
$bytes = 3; |
|
327
|
|
|
break; |
|
328
|
|
|
case 'int': |
|
329
|
|
|
$bytes = 4; |
|
330
|
|
|
break; |
|
331
|
|
|
case 'bigint': |
|
332
|
|
|
$bytes = 8; |
|
333
|
|
|
break; |
|
334
|
|
|
} |
|
335
|
|
|
$bits = 8 * (int) $bytes; |
|
336
|
|
|
$physicalMaxLength = 2 ** $bits; |
|
337
|
|
|
|
|
338
|
|
|
/** |
|
339
|
|
|
* $minDataLength y $maxDataLength contendrán el mínimo y máximo valor que puede contener el campo. |
|
340
|
|
|
*/ |
|
341
|
|
|
$minDataLength = $unsigned ? 0 : -$physicalMaxLength / 2; |
|
342
|
|
|
$maxDataLength = ($unsigned ? $physicalMaxLength : $physicalMaxLength / 2) - 1; |
|
343
|
|
|
|
|
344
|
|
|
/** |
|
345
|
|
|
* De momento, se asignan los límites máximos por el tipo de dato. |
|
346
|
|
|
* En $min y $max, iremos arrastrando los límites conforme se vayan comprobando. |
|
347
|
|
|
* $min nunca podrá ser menor que $minDataLength. |
|
348
|
|
|
* $max nunca podrá ser mayor que $maxDataLength. |
|
349
|
|
|
*/ |
|
350
|
|
|
$min = $minDataLength; |
|
351
|
|
|
$max = $maxDataLength; |
|
352
|
|
|
|
|
353
|
|
|
/** |
|
354
|
|
|
* Se puede hacer una limitación física Se puede haber definido en el xml un min y un max. |
|
355
|
|
|
* A todos los efectos, lo definido en el XML como min o max se toma como limitación |
|
356
|
|
|
* física del campo. |
|
357
|
|
|
*/ |
|
358
|
|
|
if (isset($structure['min'])) { |
|
359
|
|
|
$minXmlLength = $structure['min']; |
|
360
|
|
|
if ($minXmlLength > $minDataLength) { |
|
361
|
|
|
$min = $minXmlLength; |
|
362
|
|
|
} else { |
|
363
|
|
|
Debug::addMessage('messages', "({$key}): Se ha especificado un min {$minXmlLength} en el XML, pero por el tipo de datos, el mínimo es {$minDataLength}."); |
|
364
|
|
|
} |
|
365
|
|
|
} |
|
366
|
|
|
if (isset($structure['max'])) { |
|
367
|
|
|
$maxXmlLength = $structure['max']; |
|
368
|
|
|
if ($maxXmlLength < $maxDataLength) { |
|
369
|
|
|
$max = $maxXmlLength; |
|
370
|
|
|
} else { |
|
371
|
|
|
Debug::addMessage('messages', "({$key}): Se ha especificado un min {$maxXmlLength} en el XML, pero por el tipo de datos, el máximo es {$maxDataLength}."); |
|
372
|
|
|
} |
|
373
|
|
|
} |
|
374
|
|
|
|
|
375
|
|
|
$column['min'] = $min; |
|
376
|
|
|
$column['max'] = $max; |
|
377
|
|
|
break; |
|
378
|
|
|
default: |
|
379
|
|
|
// ??? |
|
380
|
|
|
} |
|
381
|
|
|
|
|
382
|
|
|
return $column; |
|
383
|
|
|
} |
|
384
|
|
|
|
|
385
|
|
|
public function compare_columns($table_name, $xml_cols, $db_cols) |
|
386
|
|
|
{ |
|
387
|
|
|
$sql = ''; |
|
388
|
|
|
|
|
389
|
|
|
foreach ($xml_cols as $xml_col) { |
|
390
|
|
|
if (mb_strtolower($xml_col['tipo']) == 'integer') { |
|
391
|
|
|
/** |
|
392
|
|
|
* Desde la pestaña avanzado el panel de control se puede cambiar |
|
393
|
|
|
* el tipo de entero a usar en las columnas. |
|
394
|
|
|
*/ |
|
395
|
|
|
$xml_col['tipo'] = FS_DB_INTEGER; |
|
|
|
|
|
|
396
|
|
|
} |
|
397
|
|
|
|
|
398
|
|
|
/** |
|
399
|
|
|
* Si el campo no está en la tabla, procedemos a su creación |
|
400
|
|
|
*/ |
|
401
|
|
|
$db_col = $this->search_in_array($db_cols, 'name', $xml_col['nombre']); |
|
|
|
|
|
|
402
|
|
|
if (empty($db_col)) { |
|
403
|
|
|
$sql .= 'ALTER TABLE `' . $table_name . '` ADD `' . $xml_col['nombre'] . '` '; |
|
404
|
|
|
if ($xml_col['tipo'] == 'serial') { |
|
405
|
|
|
$sql .= '`' . $xml_col['nombre'] . '` ' . constant('FS_DB_INTEGER') . ' NOT NULL AUTO_INCREMENT;'; |
|
406
|
|
|
continue; |
|
407
|
|
|
} |
|
408
|
|
|
if ($xml_col['tipo'] == 'autoincrement') { |
|
409
|
|
|
$sql .= '`' . $xml_col['nombre'] . '` ' . constant('DB_INDEX_TYPE') . ' NOT NULL AUTO_INCREMENT;'; |
|
410
|
|
|
continue; |
|
411
|
|
|
} |
|
412
|
|
|
if ($xml_col['tipo'] == 'relationship') { |
|
413
|
|
|
$xml_col['tipo'] = constant('DB_INDEX_TYPE'); |
|
414
|
|
|
} |
|
415
|
|
|
|
|
416
|
|
|
$sql .= $xml_col['tipo']; |
|
417
|
|
|
$sql .= ($xml_col['nulo'] == 'NO') ? " NOT NULL" : " NULL"; |
|
418
|
|
|
|
|
419
|
|
|
if ($xml_col['defecto'] !== null) { |
|
420
|
|
|
$sql .= " DEFAULT " . $xml_col['defecto']; |
|
421
|
|
|
} elseif ($xml_col['nulo'] == 'YES') { |
|
422
|
|
|
$sql .= " DEFAULT NULL"; |
|
423
|
|
|
} |
|
424
|
|
|
|
|
425
|
|
|
$sql .= ';'; |
|
426
|
|
|
|
|
427
|
|
|
continue; |
|
428
|
|
|
} |
|
429
|
|
|
|
|
430
|
|
|
/** |
|
431
|
|
|
* Si el campo es un autoincremental o relacionado a uno, asignamos el tipo correcto para la constraint. |
|
432
|
|
|
* Si además es el índice, nos aseguramos de que no pueda ser nulo. |
|
433
|
|
|
*/ |
|
434
|
|
|
if (in_array($xml_col['tipo'], ['autoincrement', 'relationship'])) { |
|
435
|
|
|
if ($xml_col['tipo'] === 'autoincrement') { |
|
436
|
|
|
$xml_col['nulo'] = 'NO'; |
|
437
|
|
|
} |
|
438
|
|
|
$xml_col['tipo'] = constant('DB_INDEX_TYPE'); |
|
439
|
|
|
} |
|
440
|
|
|
|
|
441
|
|
|
/// columna ya presente en db_cols. La modificamos |
|
442
|
|
|
if (!$this->compare_data_types($db_col['type'], $xml_col['tipo'])) { |
|
|
|
|
|
|
443
|
|
|
// Buscar todas las constraints relacionadas con este campo y eliminarlas |
|
444
|
|
|
foreach ($this->get_referenced_field_constraint($table_name, $xml_col['nombre']) as $pos => $constraint) { |
|
|
|
|
|
|
445
|
|
|
$sql .= "ALTER TABLE `" . $constraint['TABLE_NAME'] . "` DROP FOREIGN KEY " . $constraint['CONSTRAINT_NAME'] . ";"; |
|
446
|
|
|
} |
|
447
|
|
|
$sql .= 'ALTER TABLE `' . $table_name . '` MODIFY `' . $xml_col['nombre'] . '` ' . $xml_col['tipo'] . ';'; |
|
448
|
|
|
} |
|
449
|
|
|
|
|
450
|
|
|
if ($db_col['is_nullable'] == $xml_col['nulo']) { |
|
451
|
|
|
/// do nothing |
|
452
|
|
|
} elseif ($xml_col['nulo'] == 'YES') { |
|
453
|
|
|
$sql .= 'ALTER TABLE `' . $table_name . '` MODIFY `' . $xml_col['nombre'] . '` ' . $xml_col['tipo'] . ' NULL;'; |
|
454
|
|
|
} else { |
|
455
|
|
|
$sql .= 'ALTER TABLE `' . $table_name . '` MODIFY `' . $xml_col['nombre'] . '` ' . $xml_col['tipo'] . ' NOT NULL;'; |
|
456
|
|
|
} |
|
457
|
|
|
|
|
458
|
|
|
if ($this->compare_defaults($db_col['default'], $xml_col['defecto'])) { |
|
|
|
|
|
|
459
|
|
|
/// do nothing |
|
460
|
|
|
} elseif (is_null($xml_col['defecto'])) { |
|
461
|
|
|
if ($this->exists_index($table_name, $db_col['name']) && !$this->unique_equals($table_name, $db_col, $xml_col)) { |
|
|
|
|
|
|
462
|
|
|
$sql .= 'ALTER TABLE `' . $table_name . '` ALTER `' . $xml_col['nombre'] . '` DROP DEFAULT;'; |
|
463
|
|
|
} |
|
464
|
|
|
} elseif (mb_strtolower(substr($xml_col['defecto'], 0, 9)) == "nextval('") { /// nextval es para postgresql |
|
465
|
|
|
if ($db_col['extra'] != 'auto_increment') { |
|
466
|
|
|
$sql .= 'ALTER TABLE `' . $table_name . '` MODIFY `' . $xml_col['nombre'] . '` ' . $xml_col['tipo']; |
|
467
|
|
|
$sql .= ($xml_col['nulo'] == 'YES') ? ' NULL AUTO_INCREMENT;' : ' NOT NULL AUTO_INCREMENT;'; |
|
468
|
|
|
} |
|
469
|
|
|
} else { |
|
470
|
|
|
if ($db_col['default'] != $xml_col['defecto'] && ($db_col['default'] != null && $xml_col['defecto'] == 'NULL')) { |
|
471
|
|
|
$sql .= 'ALTER TABLE `' . $table_name . '` ALTER `' . $xml_col['nombre'] . '` SET DEFAULT ' . $xml_col['defecto'] . ";"; |
|
472
|
|
|
} |
|
473
|
|
|
} |
|
474
|
|
|
} |
|
475
|
|
|
|
|
476
|
|
|
return $this->fix_postgresql($sql); |
|
|
|
|
|
|
477
|
|
|
} |
|
478
|
|
|
|
|
479
|
|
|
/** |
|
480
|
|
|
* Create a table in the database. |
|
481
|
|
|
* Build the default fields, indexes and values defined in the model. |
|
482
|
|
|
* |
|
483
|
|
|
* @param string $tableName |
|
484
|
|
|
* |
|
485
|
|
|
* @return bool |
|
486
|
|
|
* @throws DebugBarException |
|
487
|
|
|
*/ |
|
488
|
|
|
|
|
489
|
|
|
public static function createTable(string $tableName): bool |
|
490
|
|
|
{ |
|
491
|
|
|
$tabla = self::$bbddStructure[$tableName]; |
|
492
|
|
|
$sql = self::createFields($tableName, $tabla['fields']); |
|
493
|
|
|
|
|
494
|
|
|
foreach ($tabla['keys'] as $name => $index) { |
|
495
|
|
|
$sql .= self::createIndex($tableName, $name, $index); |
|
496
|
|
|
} |
|
497
|
|
|
if (isset($tabla['values'])) { |
|
498
|
|
|
$sql .= self::setValues($tableName, $tabla['values']); |
|
499
|
|
|
} |
|
500
|
|
|
|
|
501
|
|
|
return Engine::exec($sql); |
|
502
|
|
|
} |
|
503
|
|
|
|
|
504
|
|
|
/** |
|
505
|
|
|
* Build the SQL statement to create the fields in the table. |
|
506
|
|
|
* It can also create the primary key if the auto_increment attribute is defined. |
|
507
|
|
|
* |
|
508
|
|
|
* @param string $tablename |
|
509
|
|
|
* @param array $fieldList |
|
510
|
|
|
* |
|
511
|
|
|
* @return string |
|
512
|
|
|
*/ |
|
513
|
|
|
protected static function createFields(string $tablename, array $fieldList): string |
|
514
|
|
|
{ |
|
515
|
|
|
$tablenameWithPrefix = Config::$dbPrefix . $tablename; |
|
516
|
|
|
|
|
517
|
|
|
$sql = "CREATE TABLE $tablenameWithPrefix ( "; |
|
518
|
|
|
foreach ($fieldList as $index => $col) { |
|
519
|
|
|
if (!isset($col['dbtype'])) { |
|
520
|
|
|
die('Tipo no especificado en createTable ' . $index); |
|
|
|
|
|
|
521
|
|
|
} |
|
522
|
|
|
|
|
523
|
|
|
$sql .= '`' . $index . '` ' . $col['dbtype']; |
|
524
|
|
|
$nulo = isset($col['null']) && $col['null']; |
|
525
|
|
|
|
|
526
|
|
|
$sql .= ($nulo ? '' : ' NOT') . ' NULL'; |
|
527
|
|
|
|
|
528
|
|
|
if (isset($col['extra']) && (strtolower($col['extra']) == 'auto_increment')) { |
|
529
|
|
|
$sql .= ' PRIMARY KEY AUTO_INCREMENT'; |
|
530
|
|
|
} |
|
531
|
|
|
|
|
532
|
|
|
$tmpDefecto = $col['default'] ?? null; |
|
533
|
|
|
$defecto = ''; |
|
534
|
|
|
if (isset($tmpDefecto)) { |
|
535
|
|
|
if ($tmpDefecto == 'CURRENT_TIMESTAMP') { |
|
536
|
|
|
$defecto = "$tmpDefecto"; |
|
537
|
|
|
} else { |
|
538
|
|
|
$defecto = "'$tmpDefecto'"; |
|
539
|
|
|
} |
|
540
|
|
|
} else { |
|
541
|
|
|
if ($nulo) { |
|
542
|
|
|
$defecto = 'NULL'; |
|
543
|
|
|
} |
|
544
|
|
|
} |
|
545
|
|
|
|
|
546
|
|
|
if ($defecto != '') { |
|
547
|
|
|
$sql .= ' DEFAULT ' . $defecto; |
|
548
|
|
|
} |
|
549
|
|
|
|
|
550
|
|
|
$sql .= ', '; |
|
551
|
|
|
} |
|
552
|
|
|
$sql = substr($sql, 0, -2); // Quitamos la coma y el espacio del final |
|
553
|
|
|
$sql .= ') ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci;' . self::CRLF; |
|
554
|
|
|
|
|
555
|
|
|
return $sql; |
|
556
|
|
|
} |
|
557
|
|
|
|
|
558
|
|
|
/** |
|
559
|
|
|
* Create the SQL statements for the construction of one index. |
|
560
|
|
|
* In the case of the primary index, it is not necessary if it is auto_increment. |
|
561
|
|
|
* |
|
562
|
|
|
* TODO: |
|
563
|
|
|
* |
|
564
|
|
|
* Moreover, it should not be defined if it is auto_increment because it would |
|
565
|
|
|
* generate an error when it already exists. |
|
566
|
|
|
* |
|
567
|
|
|
* @param string $tableName |
|
568
|
|
|
* @param string $indexname |
|
569
|
|
|
* @param array $indexData |
|
570
|
|
|
* |
|
571
|
|
|
* @return string |
|
572
|
|
|
*/ |
|
573
|
|
|
protected static function createIndex($tableName, $indexname, $indexData) |
|
574
|
|
|
{ |
|
575
|
|
|
$sql = "ALTER TABLE $tableName ADD CONSTRAINT $indexname "; |
|
576
|
|
|
|
|
577
|
|
|
$command = ''; |
|
578
|
|
|
// https://www.w3schools.com/sql/sql_primarykey.asp |
|
579
|
|
|
// ALTER TABLE Persons ADD CONSTRAINT PK_Person PRIMARY KEY (ID,LastName); |
|
580
|
|
|
if (isset($indexData['PRIMARY'])) { |
|
581
|
|
|
$command = 'PRIMARY KEY '; |
|
582
|
|
|
$fields = $indexData['PRIMARY']; |
|
583
|
|
|
} |
|
584
|
|
|
|
|
585
|
|
|
// https://www.w3schools.com/sql/sql_create_index.asp |
|
586
|
|
|
// CREATE INDEX idx_pname ON Persons (LastName, FirstName); |
|
587
|
|
|
if (isset($indexData['INDEX'])) { |
|
588
|
|
|
$command = 'INDEX '; |
|
589
|
|
|
$fields = $indexData['INDEX']; |
|
590
|
|
|
} |
|
591
|
|
|
|
|
592
|
|
|
// https://www.w3schools.com/sql/sql_unique.asp |
|
593
|
|
|
// ALTER TABLE Persons ADD CONSTRAINT UC_Person UNIQUE (ID,LastName); |
|
594
|
|
|
if (isset($indexData['UNIQUE'])) { |
|
595
|
|
|
$command = 'UNIQUE INDEX '; |
|
596
|
|
|
$fields = $indexData['UNIQUE']; |
|
597
|
|
|
} |
|
598
|
|
|
|
|
599
|
|
|
if ($command == '') { |
|
600
|
|
|
// https://www.w3schools.com/sql/sql_foreignkey.asp |
|
601
|
|
|
// ALTER TABLE Orders ADD CONSTRAINT FK_PersonOrder FOREIGN KEY (PersonID) REFERENCES Persons(PersonID); |
|
602
|
|
|
if (isset($indexData['FOREIGN'])) { |
|
603
|
|
|
$command = 'FOREIGN KEY '; |
|
604
|
|
|
$foreignField = $indexData['FOREIGN']; |
|
605
|
|
|
if (isset($indexData['REFERENCES'])) { |
|
606
|
|
|
$references = $indexData['REFERENCES']; |
|
607
|
|
|
if (!is_array($references)) { |
|
608
|
|
|
die('Esperaba un array en REFERENCES: ' . $tableName . '/' . $indexname); |
|
|
|
|
|
|
609
|
|
|
} |
|
610
|
|
|
if (count($references) != 1) { |
|
611
|
|
|
die('Esperaba un array de 1 elemento en REFERENCES: ' . $tableName . '/' . $indexname); |
|
|
|
|
|
|
612
|
|
|
} |
|
613
|
|
|
$refTable = key($references); |
|
614
|
|
|
$fields = '(' . implode(',', $references) . ')'; |
|
615
|
|
|
} else { |
|
616
|
|
|
die('FOREIGN necesita REFERENCES en ' . $tableName . '/' . $indexname); |
|
|
|
|
|
|
617
|
|
|
} |
|
618
|
|
|
|
|
619
|
|
|
$sql .= $command . ' ' . $foreignField . ' REFERENCES ' . $refTable . $fields; |
|
620
|
|
|
|
|
621
|
|
|
if (isset($indexData['ON']) && is_array($indexData['ON'])) { |
|
622
|
|
|
foreach ($indexData['ON'] as $key => $value) { |
|
623
|
|
|
$sql .= ' ON ' . $key . ' ' . $value . ', '; |
|
624
|
|
|
} |
|
625
|
|
|
$sql = substr($sql, 0, -2); // Quitamos el ', ' de detrás |
|
626
|
|
|
} |
|
627
|
|
|
} |
|
628
|
|
|
} else { |
|
629
|
|
|
if (is_array($fields)) { |
|
|
|
|
|
|
630
|
|
|
$fields = '(' . implode(',', $fields) . ')'; |
|
631
|
|
|
} else { |
|
632
|
|
|
$fields = "($fields)"; |
|
633
|
|
|
} |
|
634
|
|
|
|
|
635
|
|
|
if ($command == 'INDEX ') { |
|
636
|
|
|
$sql = "CREATE INDEX {$indexname} ON {$tableName}" . $fields; |
|
637
|
|
|
} else { |
|
638
|
|
|
$sql .= $command . ' ' . $fields; |
|
639
|
|
|
} |
|
640
|
|
|
} |
|
641
|
|
|
|
|
642
|
|
|
return $sql . ';' . self::CRLF; |
|
643
|
|
|
} |
|
644
|
|
|
|
|
645
|
|
|
/** |
|
646
|
|
|
* Create the SQL statements to fill the table with default data. |
|
647
|
|
|
* |
|
648
|
|
|
* @param string $tableName |
|
649
|
|
|
* @param array $values |
|
650
|
|
|
* |
|
651
|
|
|
* @return string |
|
652
|
|
|
*/ |
|
653
|
|
|
protected static function setValues(string $tableName, array $values): string |
|
654
|
|
|
{ |
|
655
|
|
|
$sql = "INSERT INTO $tableName "; |
|
656
|
|
|
$header = true; |
|
657
|
|
|
foreach ($values as $value) { |
|
658
|
|
|
$fields = "("; |
|
659
|
|
|
$datos = "("; |
|
660
|
|
|
foreach ($value as $fname => $fvalue) { |
|
661
|
|
|
$fields .= $fname . ", "; |
|
662
|
|
|
$datos .= "'$fvalue'" . ", "; |
|
663
|
|
|
} |
|
664
|
|
|
$fields = substr($fields, 0, -2) . ") "; |
|
665
|
|
|
$datos = substr($datos, 0, -2) . "), "; |
|
666
|
|
|
|
|
667
|
|
|
if ($header) { |
|
668
|
|
|
$sql .= $fields . " VALUES "; |
|
669
|
|
|
$header = false; |
|
670
|
|
|
} |
|
671
|
|
|
|
|
672
|
|
|
$sql .= $datos; |
|
673
|
|
|
} |
|
674
|
|
|
|
|
675
|
|
|
return substr($sql, 0, -2) . self::CRLF; |
|
676
|
|
|
} |
|
677
|
|
|
} |
|
678
|
|
|
|