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20 namespace Doctrine\Common\Collections\Expr;
23 * Expression of Expressions combined by AND or OR operation.
25 * @author Benjamin Eberlei <kontakt@beberlei.de>
28 class CompositeExpression implements Expression
30 const TYPE_AND = 'AND';
41 private $expressions = [];
45 * @param array $expressions
47 * @throws \RuntimeException
49 public function __construct($type, array $expressions)
53 foreach ($expressions as $expr) {
54 if ($expr instanceof Value) {
55 throw new \RuntimeException("Values are not supported expressions as children of and/or expressions.");
57 if ( ! ($expr instanceof Expression)) {
58 throw new \RuntimeException("No expression given to CompositeExpression.");
61 $this->expressions[] = $expr;
66 * Returns the list of expressions nested in this composite.
68 * @return Expression[]
70 public function getExpressionList()
72 return $this->expressions;
78 public function getType()
86 public function visit(ExpressionVisitor $visitor)
88 return $visitor->walkCompositeExpression($this);