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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Db\Expression; |
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use Yiisoft\Db\Exception\InvalidConfigException; |
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use Yiisoft\Db\Query\QueryInterface; |
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/** |
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* Class JsonExpression represents data that should be encoded to JSON. |
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* |
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* For example: |
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* |
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* ```php |
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* new JsonExpression(['a' => 1, 'b' => 2]); // will be encoded to '{"a": 1, "b": 2}' |
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* ``` |
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*/ |
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class JsonExpression implements ExpressionInterface, \JsonSerializable |
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{ |
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public const TYPE_JSON = 'json'; |
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public const TYPE_JSONB = 'jsonb'; |
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protected $value; |
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protected ?string $type; |
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public function __construct($value, ?string $type = null) |
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{ |
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if ($value instanceof self) { |
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$value = $value->getValue(); |
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} |
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$this->value = $value; |
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$this->type = $type; |
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} |
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/** |
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* The value must be compatible with {@see \Yiisoft\Json\Json::encode()|Json::encode()} input requirements. |
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* |
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* @return mixed |
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*/ |
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public function getValue() |
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{ |
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return $this->value; |
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} |
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/** |
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* Type of JSON, expression should be casted to. Defaults to `null`, meaning no explicit casting will be performed. |
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* |
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* This property will be encountered only for DBMSs that support different types of JSON. |
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* |
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* For example, PostgreSQL has `json` and `jsonb` types. |
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* |
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* @return string|null |
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*/ |
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public function getType(): ?string |
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{ |
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return $this->type; |
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} |
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/** |
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* Specify data which should be serialized to JSON. |
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* |
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* @link http://php.net/manual/en/jsonserializable.jsonserialize.php |
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* |
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* @throws InvalidConfigException when JsonExpression contains QueryInterface object |
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* |
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* @return mixed data which can be serialized by <b>json_encode</b>, which is a value of any type other than a |
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* resource. |
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*/ |
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2 |
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public function jsonSerialize() |
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{ |
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2 |
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$value = $this->getValue(); |
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2 |
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if ($value instanceof QueryInterface) { |
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throw new InvalidConfigException( |
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'The JsonExpression class can not be serialized to JSON when the value is a QueryInterface object' |
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); |
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} |
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return $value; |
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} |
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} |
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yiisoft /
db
