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64 lines
1.7 KiB
PHP
64 lines
1.7 KiB
PHP
<?php
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/**
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* @link https://www.yiiframework.com/
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* @copyright Copyright (c) 2008 Yii Software LLC
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* @license https://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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