You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
149 lines
4.3 KiB
149 lines
4.3 KiB
<?php |
|
/** |
|
* @link http://www.yiiframework.com/ |
|
* @copyright Copyright (c) 2008 Yii Software LLC |
|
* @license http://www.yiiframework.com/license/ |
|
*/ |
|
|
|
namespace yii\db\pgsql; |
|
|
|
use yii\db\ArrayExpression; |
|
use yii\db\ExpressionBuilderInterface; |
|
use yii\db\ExpressionBuilderTrait; |
|
use yii\db\ExpressionInterface; |
|
use yii\db\JsonExpression; |
|
use yii\db\Query; |
|
|
|
/** |
|
* Class ArrayExpressionBuilder builds [[ArrayExpression]] for PostgreSQL DBMS. |
|
* |
|
* @author Dmytro Naumenko <d.naumenko.a@gmail.com> |
|
* @since 2.0.14 |
|
*/ |
|
class ArrayExpressionBuilder implements ExpressionBuilderInterface |
|
{ |
|
use ExpressionBuilderTrait; |
|
|
|
|
|
/** |
|
* {@inheritdoc} |
|
* @param ArrayExpression|ExpressionInterface $expression the expression to be built |
|
*/ |
|
public function build(ExpressionInterface $expression, array &$params = []) |
|
{ |
|
$value = $expression->getValue(); |
|
if ($value === null) { |
|
return 'NULL'; |
|
} |
|
|
|
if ($value instanceof Query) { |
|
list ($sql, $params) = $this->queryBuilder->build($value, $params); |
|
return $this->buildSubqueryArray($sql, $expression); |
|
} |
|
|
|
$placeholders = $this->buildPlaceholders($expression, $params); |
|
|
|
return 'ARRAY[' . implode(', ', $placeholders) . ']' . $this->getTypehint($expression); |
|
} |
|
|
|
/** |
|
* Builds placeholders array out of $expression values |
|
* @param ExpressionInterface|ArrayExpression $expression |
|
* @param array $params the binding parameters. |
|
* @return array |
|
*/ |
|
protected function buildPlaceholders(ExpressionInterface $expression, &$params) |
|
{ |
|
$value = $expression->getValue(); |
|
|
|
$placeholders = []; |
|
if ($value === null || !is_array($value) && !$value instanceof \Traversable) { |
|
return $placeholders; |
|
} |
|
|
|
if ($expression->getDimension() > 1) { |
|
foreach ($value as $item) { |
|
$placeholders[] = $this->build($this->unnestArrayExpression($expression, $item), $params); |
|
} |
|
return $placeholders; |
|
} |
|
|
|
foreach ($value as $item) { |
|
if ($item instanceof Query) { |
|
list ($sql, $params) = $this->queryBuilder->build($item, $params); |
|
$placeholders[] = $this->buildSubqueryArray($sql, $expression); |
|
continue; |
|
} |
|
|
|
$item = $this->typecastValue($expression, $item); |
|
if ($item instanceof ExpressionInterface) { |
|
$placeholders[] = $this->queryBuilder->buildExpression($item, $params); |
|
continue; |
|
} |
|
|
|
$placeholders[] = $this->queryBuilder->bindParam($item, $params); |
|
} |
|
|
|
return $placeholders; |
|
} |
|
|
|
/** |
|
* @param ArrayExpression $expression |
|
* @param mixed $value |
|
* @return ArrayExpression |
|
*/ |
|
private function unnestArrayExpression(ArrayExpression $expression, $value) |
|
{ |
|
$expressionClass = get_class($expression); |
|
|
|
return new $expressionClass($value, $expression->getType(), $expression->getDimension()-1); |
|
} |
|
|
|
/** |
|
* @param ArrayExpression $expression |
|
* @return string the typecast expression based on [[type]]. |
|
*/ |
|
protected function getTypehint(ArrayExpression $expression) |
|
{ |
|
if ($expression->getType() === null) { |
|
return ''; |
|
} |
|
|
|
$result = '::' . $expression->getType(); |
|
$result .= str_repeat('[]', $expression->getDimension()); |
|
|
|
return $result; |
|
} |
|
|
|
/** |
|
* Build an array expression from a subquery SQL. |
|
* |
|
* @param string $sql the subquery SQL. |
|
* @param ArrayExpression $expression |
|
* @return string the subquery array expression. |
|
*/ |
|
protected function buildSubqueryArray($sql, ArrayExpression $expression) |
|
{ |
|
return 'ARRAY(' . $sql . ')' . $this->getTypehint($expression); |
|
} |
|
|
|
/** |
|
* Casts $value to use in $expression |
|
* |
|
* @param ArrayExpression $expression |
|
* @param mixed $value |
|
* @return JsonExpression |
|
*/ |
|
protected function typecastValue(ArrayExpression $expression, $value) |
|
{ |
|
if ($value instanceof ExpressionInterface) { |
|
return $value; |
|
} |
|
|
|
if (in_array($expression->getType(), [Schema::TYPE_JSON, Schema::TYPE_JSONB], true)) { |
|
return new JsonExpression($value); |
|
} |
|
|
|
return $value; |
|
} |
|
}
|
|
|