--- /dev/null
+<?php
+/*
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the MIT license. For more information, see
+ * <http://www.doctrine-project.org>.
+ */
+
+namespace Doctrine\Common\Collections\Expr;
+
+/**
+ * Expression of Expressions combined by AND or OR operation.
+ *
+ * @author Benjamin Eberlei <kontakt@beberlei.de>
+ * @since 2.3
+ */
+class CompositeExpression implements Expression
+{
+ const TYPE_AND = 'AND';
+ const TYPE_OR = 'OR';
+
+ /**
+ * @var string
+ */
+ private $type;
+
+ /**
+ * @var Expression[]
+ */
+ private $expressions = array();
+
+ /**
+ * @param string $type
+ * @param array $expressions
+ *
+ * @throws \RuntimeException
+ */
+ public function __construct($type, array $expressions)
+ {
+ $this->type = $type;
+
+ foreach ($expressions as $expr) {
+ if ($expr instanceof Value) {
+ throw new \RuntimeException("Values are not supported expressions as children of and/or expressions.");
+ }
+ if ( ! ($expr instanceof Expression)) {
+ throw new \RuntimeException("No expression given to CompositeExpression.");
+ }
+
+ $this->expressions[] = $expr;
+ }
+ }
+
+ /**
+ * Returns the list of expressions nested in this composite.
+ *
+ * @return Expression[]
+ */
+ public function getExpressionList()
+ {
+ return $this->expressions;
+ }
+
+ /**
+ * @return string
+ */
+ public function getType()
+ {
+ return $this->type;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function visit(ExpressionVisitor $visitor)
+ {
+ return $visitor->walkCompositeExpression($this);
+ }
+}