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<?php |
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/** |
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* Alxarafe. Development of PHP applications in a flash! |
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* Copyright (C) 2018 Alxarafe <[email protected]> |
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*/ |
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namespace Alxarafe\Database; |
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/** |
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* Class SqlHelper |
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* |
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* Proporciona soporte para la creación de comandos y consultas SQL. |
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* Esta clase deberá de extenderse para cada controlador de base de datos específico. |
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* Se usa desde la clase estática DB. |
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* |
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* @author Rafael San José Tovar <[email protected]> |
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* @version 2023.0101 |
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* |
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* @package Alxarafe\Database |
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*/ |
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abstract class SqlHelper |
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{ |
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/** |
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* Retorna el nombre de la tabla entre comillas. |
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* |
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* @author Rafael San José Tovar <[email protected]> |
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* @version 2023.0101 |
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* |
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* @param string $tableName |
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* |
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* @return string |
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*/ |
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public static function quoteTableName(string $tableName): string |
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{ |
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return static::getTableQuote() . $tableName . static::getTableQuote(); |
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} |
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/** |
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* Retorna el nombre de un campo entre comillas. |
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* |
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* @author Rafael San José Tovar <[email protected]> |
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* @version 2023.0101 |
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* |
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* @param string $fieldName |
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* |
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* @return string |
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*/ |
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public static function quoteFieldName(string $fieldName): string |
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{ |
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return static::getFieldQuote() . $fieldName . static::getFieldQuote(); |
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} |
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/** |
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* Retorna las comillas que encierran al nombre de la tabla en una consulta SQL. |
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* |
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* @author Rafael San José Tovar <[email protected]> |
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* @version 2023.0101 |
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* |
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* @return string |
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*/ |
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abstract public static function getTableQuote(): string; |
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/** |
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* Retorna las comillas que encierran al nombre de un campo en una consulta SQL |
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* |
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* @author Rafael San José Tovar <[email protected]> |
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* @version 2023.0101 |
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* |
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* @return string |
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*/ |
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abstract public static function getFieldQuote(): string; |
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/** |
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* Permite saber si una tabla existe. |
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* |
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* @author Rafael San José Tovar <[email protected]> |
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* @version 2023.0106 |
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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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*/ |
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abstract public static function tableExists(string $tableName): bool; |
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/** |
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* Retorna un array con la asociación de tipos del motor SQL para cada tipo definido |
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* en el Schema. |
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* |
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* @author Rafael San José Tovar <[email protected]> |
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* @version 2023.0101 |
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* |
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* @return array |
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*/ |
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abstract public static function getDataTypes(): array; |
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/** |
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* Retorna un array con el nombre de todas las tablas de la base de datos. |
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* |
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* @author Rafael San José Tovar <[email protected]> |
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* @version 2023.0101 |
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* |
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* @return array |
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*/ |
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abstract public static function getTables(): array; |
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/** |
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* Retorna el tipo de dato que se utiliza para los índices autoincrementados |
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* |
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* @author Rafael San José Tovar <[email protected]> |
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* @version 2023.0108 |
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* |
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* @return string |
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*/ |
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abstract public static function getIndexType(): string; |
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/** |
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* Retorna un array asociativo con la información de cada columna de la tabla. |
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* El resultado será dependiente del motor de base de datos. |
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* |
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* @author Rafael San José Tovar <[email protected]> |
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* @version 2023.0108 |
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* |
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* @param string $tableName |
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* |
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* @return array |
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*/ |
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abstract public static function getColumns(string $tableName): array; |
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/** |
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* Recibiendo un array con los datos de un campo tal y como lo retorna la base de |
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* datos, devuelve la información normalizada para ser utilizada por Schema. |
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* |
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* @author Rafael San José Tovar <[email protected]> |
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* @version 2023.0108 |
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* |
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* @param array $row |
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* |
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* @return array |
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*/ |
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abstract public static function normalizeDbField(array $row): array; |
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/** |
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* Recibiendo un array con los datos de un campo tal y como están en el yaml de |
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* definición, devuelve la información normalizada para ser utilizada por Schema. |
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* |
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* @author Rafael San José Tovar <[email protected]> |
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* @version 2023.0108 |
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* |
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* @param array $row |
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* |
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* @return array |
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*/ |
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abstract public static function normalizeYamlField(array $row): array; |
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abstract public static function yamlFieldToDb(array $data):array; |
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abstract public static function yamlFieldToSchema(array $data):array; |
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abstract public static function dbFieldToSchema(array $data):array; |
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abstract public static function dbFieldToYaml(array $data):array; |
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//abstract public function normalizeConstraints(array $fields): array; |
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/** |
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* Obtains an array of indexes for a table |
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* |
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* @param string $tableName |
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* |
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* @return array |
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* @throws \DebugBar\DebugBarException |
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*/ |
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public function getIndexes(string $tableName): array |
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{ |
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$query = $this->getIndexesSql($tableName); |
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$data = DB::select($query); |
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$result = []; |
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foreach ($data as $value) { |
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$row = $this->normalizeIndexes($value); |
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$result[$row['index']] = $row; |
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} |
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return $result; |
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} |
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/** |
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* Get the SQL sentence for obtains the index list of a table. |
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* |
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* @param string $tableName |
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* |
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* @return string |
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*/ |
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abstract public function getIndexesSql(string $tableName): string; |
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abstract public function normalizeIndexes(array $fields): array; |
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abstract public static function modify(string $tableName, array $oldField, array $newField):string; |
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/* |
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abstract public function getConstraintsSql(string $tableName): string; |
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public function getConstraints(string $tableName): array |
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{ |
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$query = $this->getConstraintsSql($tableName); |
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$data = DB::select($query); |
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$result = []; |
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foreach ($data as $value) { |
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$row = $this->normalizeConstraints($value); |
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$result[$row['constraint']] = $row; |
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} |
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return $result; |
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} |
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*/ |
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} |
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