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<?php |
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namespace Tsukasa\QueryBuilder\Expression; |
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use Tsukasa\QueryBuilder\Exception\QBException; |
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class Expression extends AbstractExpression |
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{ |
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protected $expression; |
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protected $params = []; |
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public function __construct($expression, array $params = []) |
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{ |
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$this->params = $params; |
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$this->expression = $expression; |
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} |
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public function toSQL() |
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{ |
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if ($this->expression) { |
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return $this->generateSql() ?: ''; |
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} |
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return ''; |
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} |
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protected function generateSql() |
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{ |
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$sql = $this->expression; |
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if (strpos($sql, '{') !== false) |
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{ |
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$tableAlias = $this->qb->getAlias(); |
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$sql = preg_replace_callback('~\{([^\}]+)\}~', function($matches) use ($tableAlias) { |
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$rawColumn = $matches[1]; |
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list(, $column) = $this->qb->getLookupBuilder()->parseLookup($this->qb, $rawColumn, null); |
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$column = $this->qb->getLookupBuilder()->fetchColumnName($column); |
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if ($tableAlias !== null && strpos($column, '.') === false) { |
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$column = $tableAlias . '.' . $column; |
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} |
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return $this->qb->getAdapter()->buildColumns($column); |
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}, $sql); |
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} |
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if (strpos($sql, '?')) |
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{ |
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if (mb_substr_count($sql, '?') !== count($this->params)) { |
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throw new QBException('Incorrect parameters count in Expression: "' . addslashes($this->expression) . '"'); |
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} |
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$sql = preg_replace_callback('~\?~', function($matches) { |
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return $this->qb->getAdapter()->quoteValue( |
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$this->getNextParam() |
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); |
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}, $sql); |
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} |
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return $sql; |
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} |
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protected function getNextParam() |
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{ |
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static $params; |
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if ($params === null) { |
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$params = $this->params; |
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reset($params); |
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} |
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$value = current($params); |
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if (next($params) === null) { |
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reset($params); |
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} |
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return $value; |
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} |
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} |
tsukasa-mixer /
QueryBuilder
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