Voeg support voor minimale hoeveelheid hops zonder maximum toe

Author: Wout Gevaert

src/Patterns/Path.php

@@ -147,6 +147,21 @@ public function withMaxHops(int $maxHops): self
         return $this;
     }
 
+    /**
+     * Set the exact number of `relationship->node` hops away to search.
+     *
+     * @see https://neo4j.com/docs/cypher-manual/current/clauses/match/#varlength-rels
+     *
+     * @param int $exactHops
+     * @return Path
+     */
+    public function withExactHops(int $exactHops) : self
+    {
+        $this->exactHops = $exactHops;
+
+        return $this;
+    }
+
     /**
      * @param string $type
      * @return Path
@@ -200,9 +215,13 @@ private function conditionToString(): string
                 $conditionInner .= $this->minHops;
             }
 
+            $conditionInner .= '..';
+
             if (isset($this->maxHops)) {
-                $conditionInner .= sprintf("..%s", $this->maxHops);
+                $conditionInner .= $this->maxHops;
             }
+        } elseif (isset($this->exactHops)) {
+            $conditionInner .= '*' . $this->exactHops;
         }
 
         if (isset($this->properties)) {
@@ -216,4 +235,4 @@ private function conditionToString(): string
 
         return sprintf("[%s]", $conditionInner);
     }
-}
+}