private void ChangeRandomNode(GraphDatabaseService db, int nodeCount, RandomValues random)
{
try
{
using (Transaction tx = Db.beginTx())
{
long nodeId = random.Next(nodeCount);
Node node = Db.getNodeById(nodeId);
object[] keys = Iterables.asCollection(node.PropertyKeys).ToArray();
string key = ( string )random.Among(keys);
if (random.NextFloat() < 0.1)
{ // REMOVE
node.RemoveProperty(key);
}
else
{ // CHANGE
node.SetProperty(key, random.NextValue().asObject());
}
tx.Success();
}
}
catch (NotFoundException)
{ // It's OK, it happens if some other thread deleted that property in between us reading it and
// removing or setting it
}
}
public virtual T Random(RandomValues random)
{
float value = random.NextFloat();
float comparison = 0.5f;
foreach (T item in _items)
{
if (value >= comparison)
{
return(item);
}
comparison /= 2f;
}
return(_items[_items.Length - 1]);
}
internal override object Miss(RandomValues random, object id, float chance)
{
return(random.NextFloat() < chance ? "_" + id : id);
}
internal override object Miss(RandomValues random, object id, float chance)
{
return(random.NextFloat() < chance ? (long?)id + 100_000_000 : id);
}
