+<?php
+
+namespace Rapsys\BlogBundle\Dql;
+
+use \Doctrine\ORM\Query\Lexer;
+
+class JsonFunction extends \Doctrine\ORM\Query\AST\Functions\FunctionNode {
+ public $keyExpression = null;
+ public $valueExpression = null;
+
+ public function parse(\Doctrine\ORM\Query\Parser $parser) {
+ $parser->match(Lexer::T_IDENTIFIER);
+ $parser->match(Lexer::T_OPEN_PARENTHESIS);
+ $this->keyExpression = $parser->ArithmeticPrimary();
+
+ if (Lexer::T_COMMA === $parser->getLexer()->lookahead['type']) {
+ $parser->match(Lexer::T_COMMA);
+ $this->valueExpression = $parser->ArithmeticPrimary();
+ }
+
+ $parser->match(Lexer::T_CLOSE_PARENTHESIS);
+ }
+
+ public function getSql(\Doctrine\ORM\Query\SqlWalker $sqlWalker) {
+ if (null !== $this->valueExpression) {
+ return 'CONCAT(\'{\', GROUP_CONCAT(CONCAT(\'"\', REPLACE('.$this->keyExpression->dispatch($sqlWalker).', \'"\', \'\\\\"\'), \'": "\', REPLACE('.$this->valueExpression->dispatch($sqlWalker).', \'"\', \'\\\\"\'), \'"\')), \'}\')';
+ }
+ return 'CONCAT(\'[\', GROUP_CONCAT(REPLACE('.$this->keyExpression->dispatch($sqlWalker).', \'"\', \'\\\\"\')), \']\')';
+ }
+}