650 lines
20 KiB
PHP
650 lines
20 KiB
PHP
<?php
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declare(strict_types=1);
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/**
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* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
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* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
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*
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* Licensed under The MIT License
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* For full copyright and license information, please see the LICENSE.txt
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* Redistributions of files must retain the above copyright notice.
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*
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* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
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* @link https://cakephp.org CakePHP(tm) Project
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* @since 3.0.0
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* @license https://opensource.org/licenses/mit-license.php MIT License
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*/
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namespace Cake\Database\Schema;
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use Cake\Database\Exception\DatabaseException;
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/**
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* Schema management/reflection features for Sqlite
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*
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* @internal
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*/
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class SqliteSchemaDialect extends SchemaDialect
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{
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/**
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* Array containing the foreign keys constraints names
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* Necessary for composite foreign keys to be handled
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*
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* @var array<string, mixed>
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*/
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protected $_constraintsIdMap = [];
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/**
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* Whether there is any table in this connection to SQLite containing sequences.
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*
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* @var bool
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*/
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protected $_hasSequences;
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/**
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* Convert a column definition to the abstract types.
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*
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* The returned type will be a type that
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* Cake\Database\TypeFactory can handle.
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*
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* @param string $column The column type + length
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* @throws \Cake\Database\Exception\DatabaseException when unable to parse column type
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* @return array<string, mixed> Array of column information.
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*/
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protected function _convertColumn(string $column): array
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{
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if ($column === '') {
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return ['type' => TableSchema::TYPE_TEXT, 'length' => null];
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}
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preg_match('/(unsigned)?\s*([a-z]+)(?:\(([0-9,]+)\))?/i', $column, $matches);
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if (empty($matches)) {
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throw new DatabaseException(sprintf('Unable to parse column type from "%s"', $column));
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}
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$unsigned = false;
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if (strtolower($matches[1]) === 'unsigned') {
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$unsigned = true;
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}
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$col = strtolower($matches[2]);
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$length = $precision = $scale = null;
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if (isset($matches[3])) {
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$length = $matches[3];
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if (strpos($length, ',') !== false) {
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[$length, $precision] = explode(',', $length);
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}
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$length = (int)$length;
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$precision = (int)$precision;
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}
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$type = $this->_applyTypeSpecificColumnConversion(
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$col,
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compact('length', 'precision', 'scale')
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);
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if ($type !== null) {
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return $type;
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}
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if ($col === 'bigint') {
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return ['type' => TableSchema::TYPE_BIGINTEGER, 'length' => $length, 'unsigned' => $unsigned];
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}
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if ($col === 'smallint') {
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return ['type' => TableSchema::TYPE_SMALLINTEGER, 'length' => $length, 'unsigned' => $unsigned];
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}
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if ($col === 'tinyint') {
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return ['type' => TableSchema::TYPE_TINYINTEGER, 'length' => $length, 'unsigned' => $unsigned];
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}
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if (strpos($col, 'int') !== false) {
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return ['type' => TableSchema::TYPE_INTEGER, 'length' => $length, 'unsigned' => $unsigned];
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}
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if (strpos($col, 'decimal') !== false) {
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return [
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'type' => TableSchema::TYPE_DECIMAL,
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'length' => $length,
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'precision' => $precision,
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'unsigned' => $unsigned,
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];
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}
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if (in_array($col, ['float', 'real', 'double'])) {
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return [
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'type' => TableSchema::TYPE_FLOAT,
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'length' => $length,
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'precision' => $precision,
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'unsigned' => $unsigned,
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];
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}
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if (strpos($col, 'boolean') !== false) {
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return ['type' => TableSchema::TYPE_BOOLEAN, 'length' => null];
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}
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if (($col === 'char' && $length === 36) || $col === 'uuid') {
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return ['type' => TableSchema::TYPE_UUID, 'length' => null];
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}
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if ($col === 'char') {
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return ['type' => TableSchema::TYPE_CHAR, 'length' => $length];
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}
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if (strpos($col, 'char') !== false) {
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return ['type' => TableSchema::TYPE_STRING, 'length' => $length];
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}
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if ($col === 'binary' && $length === 16) {
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return ['type' => TableSchema::TYPE_BINARY_UUID, 'length' => null];
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}
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if (in_array($col, ['blob', 'clob', 'binary', 'varbinary'])) {
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return ['type' => TableSchema::TYPE_BINARY, 'length' => $length];
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}
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$datetimeTypes = [
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'date',
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'time',
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'timestamp',
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'timestampfractional',
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'timestamptimezone',
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'datetime',
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'datetimefractional',
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];
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if (in_array($col, $datetimeTypes)) {
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return ['type' => $col, 'length' => null];
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}
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return ['type' => TableSchema::TYPE_TEXT, 'length' => null];
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}
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/**
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* Generate the SQL to list the tables and views.
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*
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* @param array<string, mixed> $config The connection configuration to use for
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* getting tables from.
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* @return array An array of (sql, params) to execute.
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*/
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public function listTablesSql(array $config): array
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{
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return [
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'SELECT name FROM sqlite_master ' .
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'WHERE (type="table" OR type="view") ' .
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'AND name != "sqlite_sequence" ORDER BY name',
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[],
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];
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}
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/**
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* Generate the SQL to list the tables, excluding all views.
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*
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* @param array<string, mixed> $config The connection configuration to use for
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* getting tables from.
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* @return array<mixed> An array of (sql, params) to execute.
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*/
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public function listTablesWithoutViewsSql(array $config): array
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{
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return [
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'SELECT name FROM sqlite_master WHERE type="table" ' .
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'AND name != "sqlite_sequence" ORDER BY name',
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[],
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];
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}
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/**
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* @inheritDoc
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*/
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public function describeColumnSql(string $tableName, array $config): array
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{
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$sql = sprintf(
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'PRAGMA table_info(%s)',
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$this->_driver->quoteIdentifier($tableName)
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);
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return [$sql, []];
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}
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/**
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* @inheritDoc
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*/
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public function convertColumnDescription(TableSchema $schema, array $row): void
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{
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$field = $this->_convertColumn($row['type']);
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$field += [
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'null' => !$row['notnull'],
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'default' => $this->_defaultValue($row['dflt_value']),
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];
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$primary = $schema->getConstraint('primary');
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if ($row['pk'] && empty($primary)) {
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$field['null'] = false;
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$field['autoIncrement'] = true;
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}
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// SQLite does not support autoincrement on composite keys.
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if ($row['pk'] && !empty($primary)) {
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$existingColumn = $primary['columns'][0];
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/** @psalm-suppress PossiblyNullOperand */
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$schema->addColumn($existingColumn, ['autoIncrement' => null] + $schema->getColumn($existingColumn));
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}
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$schema->addColumn($row['name'], $field);
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if ($row['pk']) {
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$constraint = (array)$schema->getConstraint('primary') + [
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'type' => TableSchema::CONSTRAINT_PRIMARY,
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'columns' => [],
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];
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$constraint['columns'] = array_merge($constraint['columns'], [$row['name']]);
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$schema->addConstraint('primary', $constraint);
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}
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}
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/**
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* Manipulate the default value.
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*
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* Sqlite includes quotes and bared NULLs in default values.
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* We need to remove those.
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*
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* @param string|int|null $default The default value.
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* @return string|int|null
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*/
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protected function _defaultValue($default)
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{
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if ($default === 'NULL' || $default === null) {
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return null;
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}
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// Remove quotes
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if (is_string($default) && preg_match("/^'(.*)'$/", $default, $matches)) {
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return str_replace("''", "'", $matches[1]);
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}
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return $default;
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}
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/**
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* @inheritDoc
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*/
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public function describeIndexSql(string $tableName, array $config): array
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{
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$sql = sprintf(
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'PRAGMA index_list(%s)',
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$this->_driver->quoteIdentifier($tableName)
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);
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return [$sql, []];
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}
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/**
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* {@inheritDoc}
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*
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* Since SQLite does not have a way to get metadata about all indexes at once,
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* additional queries are done here. Sqlite constraint names are not
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* stable, and the names for constraints will not match those used to create
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* the table. This is a limitation in Sqlite's metadata features.
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*
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* @param \Cake\Database\Schema\TableSchema $schema The table object to append
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* an index or constraint to.
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* @param array $row The row data from `describeIndexSql`.
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* @return void
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*/
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public function convertIndexDescription(TableSchema $schema, array $row): void
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{
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$sql = sprintf(
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'PRAGMA index_info(%s)',
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$this->_driver->quoteIdentifier($row['name'])
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);
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$statement = $this->_driver->prepare($sql);
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$statement->execute();
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$columns = [];
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/** @psalm-suppress PossiblyFalseIterator */
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foreach ($statement->fetchAll('assoc') as $column) {
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$columns[] = $column['name'];
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}
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$statement->closeCursor();
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if ($row['unique']) {
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$schema->addConstraint($row['name'], [
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'type' => TableSchema::CONSTRAINT_UNIQUE,
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'columns' => $columns,
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]);
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} else {
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$schema->addIndex($row['name'], [
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'type' => TableSchema::INDEX_INDEX,
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'columns' => $columns,
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]);
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}
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}
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/**
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* @inheritDoc
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*/
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public function describeForeignKeySql(string $tableName, array $config): array
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{
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$sql = sprintf('PRAGMA foreign_key_list(%s)', $this->_driver->quoteIdentifier($tableName));
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return [$sql, []];
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}
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/**
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* @inheritDoc
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*/
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public function convertForeignKeyDescription(TableSchema $schema, array $row): void
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{
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$name = $row['from'] . '_fk';
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$update = $row['on_update'] ?? '';
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$delete = $row['on_delete'] ?? '';
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$data = [
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'type' => TableSchema::CONSTRAINT_FOREIGN,
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'columns' => [$row['from']],
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'references' => [$row['table'], $row['to']],
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'update' => $this->_convertOnClause($update),
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'delete' => $this->_convertOnClause($delete),
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];
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if (isset($this->_constraintsIdMap[$schema->name()][$row['id']])) {
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$name = $this->_constraintsIdMap[$schema->name()][$row['id']];
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} else {
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$this->_constraintsIdMap[$schema->name()][$row['id']] = $name;
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}
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$schema->addConstraint($name, $data);
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}
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/**
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* {@inheritDoc}
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*
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* @param \Cake\Database\Schema\TableSchema $schema The table instance the column is in.
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* @param string $name The name of the column.
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* @return string SQL fragment.
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* @throws \Cake\Database\Exception\DatabaseException when the column type is unknown
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*/
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public function columnSql(TableSchema $schema, string $name): string
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{
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/** @var array $data */
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$data = $schema->getColumn($name);
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$sql = $this->_getTypeSpecificColumnSql($data['type'], $schema, $name);
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if ($sql !== null) {
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return $sql;
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}
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$typeMap = [
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TableSchema::TYPE_BINARY_UUID => ' BINARY(16)',
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TableSchema::TYPE_UUID => ' CHAR(36)',
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TableSchema::TYPE_CHAR => ' CHAR',
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TableSchema::TYPE_TINYINTEGER => ' TINYINT',
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TableSchema::TYPE_SMALLINTEGER => ' SMALLINT',
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TableSchema::TYPE_INTEGER => ' INTEGER',
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TableSchema::TYPE_BIGINTEGER => ' BIGINT',
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TableSchema::TYPE_BOOLEAN => ' BOOLEAN',
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TableSchema::TYPE_FLOAT => ' FLOAT',
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TableSchema::TYPE_DECIMAL => ' DECIMAL',
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TableSchema::TYPE_DATE => ' DATE',
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TableSchema::TYPE_TIME => ' TIME',
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TableSchema::TYPE_DATETIME => ' DATETIME',
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TableSchema::TYPE_DATETIME_FRACTIONAL => ' DATETIMEFRACTIONAL',
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TableSchema::TYPE_TIMESTAMP => ' TIMESTAMP',
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TableSchema::TYPE_TIMESTAMP_FRACTIONAL => ' TIMESTAMPFRACTIONAL',
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TableSchema::TYPE_TIMESTAMP_TIMEZONE => ' TIMESTAMPTIMEZONE',
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TableSchema::TYPE_JSON => ' TEXT',
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];
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$out = $this->_driver->quoteIdentifier($name);
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$hasUnsigned = [
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TableSchema::TYPE_TINYINTEGER,
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TableSchema::TYPE_SMALLINTEGER,
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TableSchema::TYPE_INTEGER,
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TableSchema::TYPE_BIGINTEGER,
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TableSchema::TYPE_FLOAT,
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TableSchema::TYPE_DECIMAL,
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];
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if (
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in_array($data['type'], $hasUnsigned, true) &&
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isset($data['unsigned']) &&
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$data['unsigned'] === true
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) {
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if ($data['type'] !== TableSchema::TYPE_INTEGER || $schema->getPrimaryKey() !== [$name]) {
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$out .= ' UNSIGNED';
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}
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}
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if (isset($typeMap[$data['type']])) {
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$out .= $typeMap[$data['type']];
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}
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if ($data['type'] === TableSchema::TYPE_TEXT && $data['length'] !== TableSchema::LENGTH_TINY) {
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$out .= ' TEXT';
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}
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if ($data['type'] === TableSchema::TYPE_CHAR) {
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$out .= '(' . $data['length'] . ')';
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}
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if (
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$data['type'] === TableSchema::TYPE_STRING ||
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(
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$data['type'] === TableSchema::TYPE_TEXT &&
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$data['length'] === TableSchema::LENGTH_TINY
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)
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) {
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$out .= ' VARCHAR';
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if (isset($data['length'])) {
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$out .= '(' . $data['length'] . ')';
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}
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}
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if ($data['type'] === TableSchema::TYPE_BINARY) {
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if (isset($data['length'])) {
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$out .= ' BLOB(' . $data['length'] . ')';
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} else {
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$out .= ' BLOB';
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}
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}
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$integerTypes = [
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TableSchema::TYPE_TINYINTEGER,
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TableSchema::TYPE_SMALLINTEGER,
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TableSchema::TYPE_INTEGER,
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];
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if (
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in_array($data['type'], $integerTypes, true) &&
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isset($data['length']) &&
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$schema->getPrimaryKey() !== [$name]
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) {
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$out .= '(' . (int)$data['length'] . ')';
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}
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$hasPrecision = [TableSchema::TYPE_FLOAT, TableSchema::TYPE_DECIMAL];
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if (
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in_array($data['type'], $hasPrecision, true) &&
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(
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isset($data['length']) ||
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isset($data['precision'])
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)
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) {
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$out .= '(' . (int)$data['length'] . ',' . (int)$data['precision'] . ')';
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}
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if (isset($data['null']) && $data['null'] === false) {
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$out .= ' NOT NULL';
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}
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if ($data['type'] === TableSchema::TYPE_INTEGER && $schema->getPrimaryKey() === [$name]) {
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$out .= ' PRIMARY KEY AUTOINCREMENT';
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}
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$timestampTypes = [
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TableSchema::TYPE_DATETIME,
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TableSchema::TYPE_DATETIME_FRACTIONAL,
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TableSchema::TYPE_TIMESTAMP,
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TableSchema::TYPE_TIMESTAMP_FRACTIONAL,
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TableSchema::TYPE_TIMESTAMP_TIMEZONE,
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];
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if (isset($data['null']) && $data['null'] === true && in_array($data['type'], $timestampTypes, true)) {
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$out .= ' DEFAULT NULL';
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}
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if (isset($data['default'])) {
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$out .= ' DEFAULT ' . $this->_driver->schemaValue($data['default']);
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}
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return $out;
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}
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/**
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* {@inheritDoc}
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*
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* Note integer primary keys will return ''. This is intentional as Sqlite requires
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* that integer primary keys be defined in the column definition.
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*
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* @param \Cake\Database\Schema\TableSchema $schema The table instance the column is in.
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* @param string $name The name of the column.
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* @return string SQL fragment.
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*/
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public function constraintSql(TableSchema $schema, string $name): string
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{
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/** @var array $data */
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$data = $schema->getConstraint($name);
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/** @psalm-suppress PossiblyNullArrayAccess */
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if (
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$data['type'] === TableSchema::CONSTRAINT_PRIMARY &&
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count($data['columns']) === 1 &&
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$schema->getColumn($data['columns'][0])['type'] === TableSchema::TYPE_INTEGER
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) {
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return '';
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}
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$clause = '';
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$type = '';
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if ($data['type'] === TableSchema::CONSTRAINT_PRIMARY) {
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$type = 'PRIMARY KEY';
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}
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if ($data['type'] === TableSchema::CONSTRAINT_UNIQUE) {
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$type = 'UNIQUE';
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}
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if ($data['type'] === TableSchema::CONSTRAINT_FOREIGN) {
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$type = 'FOREIGN KEY';
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$clause = sprintf(
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' REFERENCES %s (%s) ON UPDATE %s ON DELETE %s',
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$this->_driver->quoteIdentifier($data['references'][0]),
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$this->_convertConstraintColumns($data['references'][1]),
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$this->_foreignOnClause($data['update']),
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$this->_foreignOnClause($data['delete'])
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);
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}
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$columns = array_map(
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[$this->_driver, 'quoteIdentifier'],
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$data['columns']
|
|
);
|
|
|
|
return sprintf(
|
|
'CONSTRAINT %s %s (%s)%s',
|
|
$this->_driver->quoteIdentifier($name),
|
|
$type,
|
|
implode(', ', $columns),
|
|
$clause
|
|
);
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*
|
|
* SQLite can not properly handle adding a constraint to an existing table.
|
|
* This method is no-op
|
|
*
|
|
* @param \Cake\Database\Schema\TableSchema $schema The table instance the foreign key constraints are.
|
|
* @return array SQL fragment.
|
|
*/
|
|
public function addConstraintSql(TableSchema $schema): array
|
|
{
|
|
return [];
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*
|
|
* SQLite can not properly handle dropping a constraint to an existing table.
|
|
* This method is no-op
|
|
*
|
|
* @param \Cake\Database\Schema\TableSchema $schema The table instance the foreign key constraints are.
|
|
* @return array SQL fragment.
|
|
*/
|
|
public function dropConstraintSql(TableSchema $schema): array
|
|
{
|
|
return [];
|
|
}
|
|
|
|
/**
|
|
* @inheritDoc
|
|
*/
|
|
public function indexSql(TableSchema $schema, string $name): string
|
|
{
|
|
/** @var array $data */
|
|
$data = $schema->getIndex($name);
|
|
$columns = array_map(
|
|
[$this->_driver, 'quoteIdentifier'],
|
|
$data['columns']
|
|
);
|
|
|
|
return sprintf(
|
|
'CREATE INDEX %s ON %s (%s)',
|
|
$this->_driver->quoteIdentifier($name),
|
|
$this->_driver->quoteIdentifier($schema->name()),
|
|
implode(', ', $columns)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* @inheritDoc
|
|
*/
|
|
public function createTableSql(TableSchema $schema, array $columns, array $constraints, array $indexes): array
|
|
{
|
|
$lines = array_merge($columns, $constraints);
|
|
$content = implode(",\n", array_filter($lines));
|
|
$temporary = $schema->isTemporary() ? ' TEMPORARY ' : ' ';
|
|
$table = sprintf("CREATE%sTABLE \"%s\" (\n%s\n)", $temporary, $schema->name(), $content);
|
|
$out = [$table];
|
|
foreach ($indexes as $index) {
|
|
$out[] = $index;
|
|
}
|
|
|
|
return $out;
|
|
}
|
|
|
|
/**
|
|
* @inheritDoc
|
|
*/
|
|
public function truncateTableSql(TableSchema $schema): array
|
|
{
|
|
$name = $schema->name();
|
|
$sql = [];
|
|
if ($this->hasSequences()) {
|
|
$sql[] = sprintf('DELETE FROM sqlite_sequence WHERE name="%s"', $name);
|
|
}
|
|
|
|
$sql[] = sprintf('DELETE FROM "%s"', $name);
|
|
|
|
return $sql;
|
|
}
|
|
|
|
/**
|
|
* Returns whether there is any table in this connection to SQLite containing
|
|
* sequences
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function hasSequences(): bool
|
|
{
|
|
$result = $this->_driver->prepare(
|
|
'SELECT 1 FROM sqlite_master WHERE name = "sqlite_sequence"'
|
|
);
|
|
$result->execute();
|
|
$this->_hasSequences = (bool)$result->rowCount();
|
|
$result->closeCursor();
|
|
|
|
return $this->_hasSequences;
|
|
}
|
|
}
|
|
|
|
// phpcs:disable
|
|
class_alias(
|
|
'Cake\Database\Schema\SqliteSchemaDialect',
|
|
'Cake\Database\Schema\SqliteSchema'
|
|
);
|
|
// phpcs:enable
|