Class yii\db\pgsql\JsonExpressionBuilder
| Inheritance | yii\db\pgsql\JsonExpressionBuilder |
|---|---|
| Implements | yii\db\ExpressionBuilderInterface |
| Uses Traits | yii\db\ExpressionBuilderTrait |
| Available since version | 2.0.14 |
| Source Code | https://github.com/yiisoft/yii2/blob/master/framework/db/pgsql/JsonExpressionBuilder.php |
Class JsonExpressionBuilder builds yii\db\JsonExpression for PostgreSQL DBMS.
Public Methods
| 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\pgsql\JsonExpressionBuilder |
Protected Methods
| Method | Description | Defined By |
|---|---|---|
| getTypecast() | yii\db\pgsql\JsonExpressionBuilder |
Method Details
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;
}
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)" . $this->getTypecast($expression);
}
if ($value instanceof ArrayExpression) {
$placeholder = 'array_to_json(' . $this->queryBuilder->buildExpression($value, $params) . ')';
} else {
$placeholder = $this->queryBuilder->bindParam(Json::encode($value), $params);
}
return $placeholder . $this->getTypecast($expression);
}
| protected string getTypecast ( yii\db\JsonExpression $expression ) | ||
| $expression | yii\db\JsonExpression | |
| return | string |
The typecast expression based on type. |
|---|---|---|
protected function getTypecast(JsonExpression $expression)
{
if ($expression->getType() === null) {
return '';
}
return '::' . $expression->getType();
}