Merge pull request #27 from holtkamp/add-isMemberOfCondition

Add isMemberOf condition

spec/Condition/IsMemberOfSpec.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace spec\Rb\Specification\Doctrine\Condition;
+
+use Doctrine\ORM\Query\Expr;
+use Doctrine\ORM\QueryBuilder;
+use PhpSpec\ObjectBehavior;
+use Rb\Specification\Doctrine\SpecificationInterface;
+
+class IsMemberOfSpec extends ObjectBehavior
+{
+    private $className = '\Foo';
+    private $field     = 'foo';
+
+    private $dqlAlias = 'a';
+
+    public function let()
+    {
+        $this->beConstructedWith($this->field, $this->className, $this->dqlAlias);
+    }
+
+    public function it_is_an_expression()
+    {
+        $this->shouldBeAnInstanceOf(SpecificationInterface::class);
+    }
+
+    public function it_calls_is_instance_of(QueryBuilder $queryBuilder, Expr $expr)
+    {
+        $expression = 'a.foo member of ' . $this->className;
+
+        $queryBuilder->expr()->willReturn($expr);
+        $expr->isMemberOf(sprintf('%s.%s', $this->dqlAlias, $this->field), $this->className)->willReturn($expression);
+
+        $this->isSatisfiedBy('foo')->shouldReturn(true);
+        $this->modify($queryBuilder, 'b')->shouldReturn($expression);
+    }
+
+    public function it_uses_dql_alias_if_passed(QueryBuilder $queryBuilder, Expr $expr)
+    {
+        $dqlAlias = 'x';
+        $this->beConstructedWith($this->field, $this->className, null);
+        $queryBuilder->expr()->willReturn($expr);
+
+        $expr->isMemberOf(sprintf('%s.%s', $dqlAlias, $this->field), $this->className)->shouldBeCalled();
+
+        $this->isSatisfiedBy('foo')->shouldReturn(true);
+        $this->modify($queryBuilder, $dqlAlias);
+    }
+}

src/Condition/IsMemberOf.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace Rb\Specification\Doctrine\Condition;
+
+use Doctrine\ORM\QueryBuilder;
+use Rb\Specification\Doctrine\AbstractSpecification;
+
+class IsMemberOf extends AbstractSpecification
+{
+    /**
+     * @var string
+     */
+    private $className;
+
+    /**
+     * @param string $field
+     * @param string $className
+     * @param string $dqlAlias
+     */
+    public function __construct($field, $className, $dqlAlias = null)
+    {
+        $this->className = $className;
+
+        parent::__construct($field, $dqlAlias);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function modify(QueryBuilder $queryBuilder, $dqlAlias)
+    {
+        return (string) $queryBuilder->expr()->isMemberOf(
+            $this->createPropertyWithAlias($dqlAlias),
+            $this->className
+        );
+    }
+}