Add ability to use SplittableRandom as well as Random

community/random-values/src/main/java/org/neo4j/values/Generator.java

@@ -0,0 +1,16 @@
+package org.neo4j.values;
+
+public interface Generator
+{
+    long nextLong();
+
+    boolean nextBoolean();
+
+    int nextInt();
+
+    int nextInt( int bound );
+
+    float nextFloat();
+
+    double nextDouble();
+}

community/random-values/src/main/java/org/neo4j/values/RandomGenerator.java

@@ -0,0 +1,49 @@
+package org.neo4j.values;
+
+import java.util.Random;
+
+public class RandomGenerator implements Generator
+{
+    private final Random random;
+
+    public RandomGenerator( Random random )
+    {
+        this.random = random;
+    }
+
+    @Override
+    public long nextLong()
+    {
+        return random.nextLong();
+    }
+
+    @Override
+    public boolean nextBoolean()
+    {
+        return random.nextBoolean();
+    }
+
+    @Override
+    public int nextInt()
+    {
+        return random.nextInt();
+    }
+
+    @Override
+    public int nextInt( int bound )
+    {
+        return random.nextInt( bound );
+    }
+
+    @Override
+    public float nextFloat()
+    {
+        return random.nextFloat();
+    }
+
+    @Override
+    public double nextDouble()
+    {
+        return random.nextDouble();
+    }
+}