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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Db\Schema; |
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use PDO; |
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use Yiisoft\Db\Command\Param; |
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use Yiisoft\Db\Expression\ExpressionInterface; |
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use Yiisoft\Strings\NumericHelper; |
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/** |
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* The ColumnSchema class represents the metadata of a column in a database table. It provides information about the |
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* column's name, type, size, precision, and other details. |
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* |
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* The ColumnSchema class is used to store and retrieve metadata about a column in a database table. It is typically |
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* used in conjunction with the TableSchema class, which represents the metadata of a database table as a whole. |
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* |
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* Here is an example of how the ColumnSchema class might be used: |
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* |
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* ```php |
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* use Yiisoft\Db\Schema\ColumnSchema; |
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* |
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* $column = new ColumnSchema(); |
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* $column->name('id'); |
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* $column->allowNull(false); |
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* $column->dbType('int(11)'); |
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* $column->phpType('integer'); |
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* $column->type('integer'); |
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* $column->defaultValue(0); |
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* $column->autoIncrement(true); |
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* $column->primaryKey(true); |
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* `` |
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*/ |
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abstract class AbstractColumnSchema implements ColumnSchemaInterface |
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{ |
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private bool $allowNull = false; |
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private bool $autoIncrement = false; |
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private string|null $comment = null; |
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private bool $computed = false; |
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private string $dbType = ''; |
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private mixed $defaultValue = null; |
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private array|null $enumValues = null; |
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private string|null $extra = null; |
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private bool $isPrimaryKey = false; |
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private string $name = ''; |
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private string|null $phpType = null; |
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private int|null $precision = null; |
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private int|null $scale = null; |
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private int|null $size = null; |
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private string $type = ''; |
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private bool $unsigned = false; |
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public function allowNull(bool $value): void |
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{ |
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$this->allowNull = $value; |
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} |
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public function autoIncrement(bool $value): void |
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{ |
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$this->autoIncrement = $value; |
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} |
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public function comment(string|null $value): void |
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{ |
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$this->comment = $value; |
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} |
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public function computed(bool $value): void |
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{ |
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$this->computed = $value; |
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} |
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public function dbType(string $value): void |
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{ |
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$this->dbType = $value; |
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} |
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public function dbTypecast(mixed $value): mixed |
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{ |
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/** |
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* the default implementation does the same as casting for PHP, but it should be possible to override this with |
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* annotation of explicit PDO type. |
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*/ |
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return $this->typecast($value); |
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} |
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public function defaultValue(mixed $value): void |
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{ |
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$this->defaultValue = $value; |
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} |
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public function enumValues(array|null $value): void |
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{ |
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$this->enumValues = $value; |
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} |
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public function extra(string|null $value): void |
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{ |
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$this->extra = $value; |
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} |
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public function getComment(): string|null |
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{ |
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return $this->comment; |
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} |
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public function getDbType(): string |
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{ |
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return $this->dbType; |
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} |
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public function getDefaultValue(): mixed |
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{ |
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return $this->defaultValue; |
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} |
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public function getEnumValues(): array|null |
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{ |
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return $this->enumValues; |
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} |
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public function getExtra(): string|null |
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{ |
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return $this->extra; |
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} |
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public function getName(): string |
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{ |
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return $this->name; |
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} |
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public function getPrecision(): int|null |
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{ |
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return $this->precision; |
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} |
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public function getPhpType(): string|null |
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{ |
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return $this->phpType; |
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} |
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public function getScale(): int|null |
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{ |
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return $this->scale; |
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} |
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public function getSize(): int|null |
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{ |
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return $this->size; |
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} |
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public function getType(): string |
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{ |
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return $this->type; |
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} |
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public function isAllowNull(): bool |
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{ |
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return $this->allowNull; |
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} |
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public function isAutoIncrement(): bool |
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{ |
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return $this->autoIncrement; |
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} |
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public function isComputed(): bool |
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{ |
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return $this->computed; |
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} |
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public function isPrimaryKey(): bool |
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{ |
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return $this->isPrimaryKey; |
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} |
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public function isUnsigned(): bool |
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{ |
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return $this->unsigned; |
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} |
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public function name(string $value): void |
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{ |
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$this->name = $value; |
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} |
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public function phpType(string|null $value): void |
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{ |
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$this->phpType = $value; |
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} |
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public function phpTypecast(mixed $value): mixed |
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{ |
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return $this->typecast($value); |
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} |
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public function precision(int|null $value): void |
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{ |
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$this->precision = $value; |
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} |
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public function primaryKey(bool $value): void |
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{ |
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$this->isPrimaryKey = $value; |
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} |
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public function scale(int|null $value): void |
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{ |
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$this->scale = $value; |
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} |
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public function size(int|null $value): void |
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{ |
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$this->size = $value; |
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} |
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public function type(string $value): void |
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{ |
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$this->type = $value; |
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} |
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public function unsigned(bool $value): void |
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{ |
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$this->unsigned = $value; |
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} |
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/** |
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* Converts the input value according to {@see phpType} after retrieval from the database. |
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* |
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* If the value is null or an {@see Expression}, it will not be converted. |
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* |
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* @param mixed $value input value |
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* |
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* @return mixed converted value |
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*/ |
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protected function typecast(mixed $value): mixed |
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{ |
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if ( |
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$value === '' |
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&& !in_array( |
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$this->type, |
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[ |
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Schema::TYPE_TEXT, |
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Schema::TYPE_STRING, |
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Schema::TYPE_BINARY, |
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Schema::TYPE_CHAR, |
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], |
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true |
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) |
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) { |
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return null; |
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} |
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if ( |
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$value === null |
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|| gettype($value) === $this->phpType |
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|| $value instanceof ExpressionInterface |
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) { |
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return $value; |
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} |
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if ( |
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is_array($value) |
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&& count($value) === 2 |
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&& isset($value[1]) |
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&& in_array($value[1], $this->getPdoParamTypes(), true) |
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) { |
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return new Param((string) $value[0], $value[1]); |
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} |
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switch ($this->phpType) { |
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case Schema::PHP_TYPE_RESOURCE: |
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case Schema::PHP_TYPE_STRING: |
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if (is_resource($value)) { |
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return $value; |
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} |
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if (is_float($value)) { |
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/* ensure type cast always has . as decimal separator in all locales */ |
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return NumericHelper::normalize((string) $value); |
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} |
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if (is_bool($value)) { |
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return $value ? '1' : '0'; |
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} |
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return (string) $value; |
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case Schema::PHP_TYPE_INTEGER: |
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return (int) $value; |
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case Schema::PHP_TYPE_BOOLEAN: |
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/** |
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* treating a 0 bit value as false too |
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* |
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* @link https://github.com/yiisoft/yii2/issues/9006 |
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*/ |
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return (bool) $value && $value !== "\0"; |
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case Schema::PHP_TYPE_DOUBLE: |
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return (float) $value; |
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} |
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return $value; |
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} |
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/** |
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* @return int[] array of numbers that represent possible PDO parameter types |
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*/ |
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private function getPdoParamTypes(): array |
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{ |
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return [ |
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PDO::PARAM_BOOL, |
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PDO::PARAM_INT, |
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PDO::PARAM_STR, |
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PDO::PARAM_LOB, |
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PDO::PARAM_NULL, |
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PDO::PARAM_STMT, |
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]; |
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} |
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} |
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