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62 lines
1.7 KiB
62 lines
1.7 KiB
<?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\pgsql; |
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use yii\db\ArrayExpression; |
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use yii\db\ExpressionBuilderInterface; |
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use yii\db\ExpressionBuilderTrait; |
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use yii\db\ExpressionInterface; |
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use yii\db\JsonExpression; |
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use yii\db\Query; |
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use yii\helpers\Json; |
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/** |
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* Class JsonExpressionBuilder builds [[JsonExpression]] for PostgreSQL DBMS. |
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* |
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* @author Dmytro Naumenko <d.naumenko.a@gmail.com> |
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* @since 2.0.14 |
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*/ |
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class JsonExpressionBuilder implements ExpressionBuilderInterface |
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{ |
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use ExpressionBuilderTrait; |
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/** |
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* {@inheritdoc} |
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* @param JsonExpression|ExpressionInterface $expression the expression to be built |
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*/ |
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public function build(ExpressionInterface $expression, array &$params = []) |
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{ |
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$value = $expression->getValue(); |
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if ($value instanceof Query) { |
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list ($sql, $params) = $this->queryBuilder->build($value, $params); |
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return "($sql)" . $this->getTypecast($expression); |
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} |
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if ($value instanceof ArrayExpression) { |
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$placeholder = 'array_to_json(' . $this->queryBuilder->buildExpression($value, $params) . ')'; |
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} else { |
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$placeholder = $this->queryBuilder->bindParam(Json::encode($value), $params); |
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} |
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return $placeholder . $this->getTypecast($expression); |
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} |
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/** |
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* @param JsonExpression $expression |
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* @return string the typecast expression based on [[type]]. |
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*/ |
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protected function getTypecast(JsonExpression $expression) |
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{ |
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if ($expression->getType() === null) { |
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return ''; |
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} |
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return '::' . $expression->getType(); |
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} |
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}
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