exports: fix activity DateAggregator; add customs DQL Date/Time functions

src/Bundle/ChillMainBundle/Doctrine/DQL/Extract.php

@@ -0,0 +1,47 @@
+<?php
+
+namespace Chill\MainBundle\Doctrine\DQL;
+
+use Doctrine\ORM\Query\AST\Functions\FunctionNode;
+use Doctrine\ORM\Query\AST\PathExpression;
+use Doctrine\ORM\Query\Lexer;
+use Doctrine\ORM\Query\Parser;
+use Doctrine\ORM\Query\SqlWalker;
+
+/**
+ * Extract postgresql function
+ * https://www.postgresql.org/docs/current/functions-datetime.html#FUNCTIONS-DATETIME-EXTRACT
+ *
+ * Usage : EXTRACT(field FROM value)
+ */
+class Extract extends FunctionNode
+{
+    private string $field;
+
+    private PathExpression $value;
+
+    public function getSql(SqlWalker $sqlWalker)
+    {
+        return sprintf(
+            'EXTRACT(%s FROM %s)',
+            $this->field,
+            $this->value->dispatch($sqlWalker)
+        );
+    }
+
+    public function parse(Parser $parser)
+    {
+        $parser->match(Lexer::T_IDENTIFIER);
+        $parser->match(Lexer::T_OPEN_PARENTHESIS);
+
+        $parser->match(Lexer::T_IDENTIFIER);
+        $this->field = $parser->getLexer()->token['value'];
+
+        $parser->match(Lexer::T_FROM);
+
+        $this->value = $parser->ScalarExpression();
+
+        $parser->match(Lexer::T_CLOSE_PARENTHESIS);
+    }
+
+}