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<?php |
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/** |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright (c) 2008 Yii Software LLC |
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* @license http://www.yiiframework.com/license/ |
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*/ |
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namespace yii\db; |
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use yii\base\InvalidConfigException; |
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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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* @author Dmytro Naumenko <[email protected]> |
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* @since 2.0.14 |
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*/ |
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class JsonExpression implements ExpressionInterface, \JsonSerializable |
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{ |
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const TYPE_JSON = 'json'; |
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const TYPE_JSONB = 'jsonb'; |
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/** |
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* @var mixed the value to be encoded to JSON. |
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* The value must be compatible with [\yii\helpers\Json::encode()|Json::encode()]] input requirements. |
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*/ |
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protected $value; |
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/** |
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* @var string|null Type of JSON, expression should be casted to. Defaults to `null`, meaning |
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* no explicit casting will be performed. |
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* This property will be encountered only for DBMSs that support different types of JSON. |
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* For example, PostgreSQL has `json` and `jsonb` types. |
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*/ |
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protected $type; |
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/** |
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* JsonExpression constructor. |
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* |
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* @param mixed $value the value to be encoded to JSON. |
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* The value must be compatible with [\yii\helpers\Json::encode()|Json::encode()]] requirements. |
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* @param string|null $type the type of the JSON. See [[JsonExpression::type]] |
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* |
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* @see type |
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*/ |
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public function __construct($value, $type = null) |
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{ |
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if ($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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* @return mixed |
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* @see value |
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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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* @return null|string the type of JSON |
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* @see type |
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*/ |
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public function getType() |
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{ |
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return $this->type; |
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} |
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/** |
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* Specify data which should be serialized to JSON |
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* |
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* @link http://php.net/manual/en/jsonserializable.jsonserialize.php |
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* @return mixed data which can be serialized by <b>json_encode</b>, |
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* which is a value of any type other than a resource. |
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* @since 2.0.14.1 |
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* @throws InvalidConfigException when JsonExpression contains QueryInterface object |
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*/ |
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public function jsonSerialize() |
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{ |
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$value = $this->getValue(); |
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2 |
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if ($value instanceof QueryInterface) { |
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throw new InvalidConfigException('The JsonExpression class can not be serialized to JSON when the value is a QueryInterface object'); |
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} |
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return $value; |
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} |
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} |
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yiisoft /
yii2
