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Class yii\db\mysql\JsonExpressionBuilder

All Classes | Properties | Methods | Constants
Inheritanceyii\db\mysql\JsonExpressionBuilder
Implementsyii\db\ExpressionBuilderInterface
Uses Traitsyii\db\ExpressionBuilderTrait
Available since version2.0.14
Source Code https://github.com/yiisoft/yii2/blob/master/framework/db/mysql/JsonExpressionBuilder.php

Class JsonExpressionBuilder builds yii\db\JsonExpression for MySQL DBMS.

Protected Properties

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Property Type Description Defined By

Public Methods

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Method Description Defined By
__construct() ExpressionBuilderTrait constructor. yii\db\ExpressionBuilderTrait
build() Method builds the raw SQL from the $expression that will not be additionally escaped or quoted. yii\db\mysql\JsonExpressionBuilder

Constants

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Constant Value Description Defined By
PARAM_PREFIX ':qp' yii\db\mysql\JsonExpressionBuilder

Method Details

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__construct() public method

Defined in: yii\db\ExpressionBuilderTrait::__construct()

ExpressionBuilderTrait constructor.

public void __construct ( yii\db\QueryBuilder $queryBuilder )
$queryBuilder yii\db\QueryBuilder 

                public function __construct(QueryBuilder $queryBuilder)
{
    $this->queryBuilder = $queryBuilder;
}
build() public method

Method builds the raw SQL from the $expression that will not be additionally escaped or quoted.

public string build ( yii\db\ExpressionInterface $expression, array &$params = [] )
$expression yii\db\JsonExpression|yii\db\ExpressionInterface

The expression to be built
$params array

The binding parameters.
return string

The raw SQL that will not be additionally escaped or quoted.

 

                public function build(ExpressionInterface $expression, array &$params = [])
{
    $value = $expression->getValue();
    if ($value instanceof Query) {
        list ($sql, $params) = $this->queryBuilder->build($value, $params);
        return "($sql)";
    }
    $placeholder = static::PARAM_PREFIX . count($params);
    $params[$placeholder] = Json::encode($value);
    return "CAST($placeholder AS JSON)";
}