public void ShouldThrowExceptionIfMarkerByteNotList()
{
var mockInput = IOExtensions.CreateMockStream(PackStream.False);
var reader = new PackStreamReader(mockInput.Object, BoltReader.StructHandlers);
var ex = Xunit.Record.Exception(() => reader.ReadListHeader());
ex.Should().BeOfType <ProtocolException>();
mockInput.Verify(x => x.ReadByte(), Times.Once);
}
public void ShouldReadTinyList()
{
var mockInput = IOExtensions.CreateMockStream(0x92);
var reader = new PackStreamReader(mockInput.Object, BoltReader.StructHandlers);
var header = reader.ReadListHeader();
header.Should().Be(2);
mockInput.Verify(x => x.ReadByte(), Times.Once);
}
public void ShouldReadList32()
{
var mockInput = IOExtensions.CreateMockStream(PackStream.List32, PackStreamBitConverter.GetBytes((int)-1));
var reader = new PackStreamReader(mockInput.Object, BoltReader.StructHandlers);
var header = reader.ReadListHeader();
header.Should().Be(uint.MaxValue);
mockInput.Verify(x => x.ReadByte(), Times.Once);
mockInput.Verify(x => x.Read(It.IsAny <byte[]>(), It.IsAny <int>(), It.IsAny <int>()), Times.Once);
}
public void ShouldReadList8()
{
var mockInput = IOExtensions.CreateMockStream(PackStream.List8, (byte)1);
var reader = new PackStreamReader(mockInput.Object, BoltReader.StructHandlers);
var header = reader.ReadListHeader();
header.Should().Be(1);
mockInput.Verify(x => x.ReadByte(), Times.Once);
mockInput.Verify(x => x.Read(It.IsAny <byte[]>(), It.IsAny <int>(), It.IsAny <int>()), Times.Once);
}
public object Read(PackStreamReader reader, long size)
{
var fieldCount = (int)reader.ReadListHeader();
var fields = new object[fieldCount];
for (var i = 0; i < fieldCount; i++)
{
fields[i] = reader.Read();
}
return(new RecordMessage(fields));
}
public object Read(PackStreamReader reader, long size)
{
var urn = reader.ReadLong();
var numLabels = (int)reader.ReadListHeader();
var labels = new List <string>(numLabels);
for (var i = 0; i < numLabels; i++)
{
labels.Add(reader.ReadString());
}
var numProps = (int)reader.ReadMapHeader();
var props = new Dictionary <string, object>(numProps);
for (var j = 0; j < numProps; j++)
{
var key = reader.ReadString();
props.Add(key, reader.Read());
}
return(new Node(urn, labels, props));
}
public object Read(PackStreamReader reader, long size)
{
// List of unique nodes
var uniqNodes = new INode[(int)reader.ReadListHeader()];
for (var i = 0; i < uniqNodes.Length; i++)
{
var node = reader.Read() as INode;
Throw.ProtocolException.IfFalse(node != null, "receivedNode");
uniqNodes[i] = node;
}
// List of unique relationships, without start/end information
var uniqRels = new Relationship[(int)reader.ReadListHeader()];
for (var i = 0; i < uniqRels.Length; i++)
{
var uniqRel = reader.Read() as Relationship;
Throw.ProtocolException.IfFalse(uniqRel != null, "receivedUnboundRelationship");
uniqRels[i] = uniqRel;
}
// Path sequence
var length = (int)reader.ReadListHeader();
// Knowing the sequence length, we can create the arrays that will represent the nodes, rels and segments in their "path order"
var segments = new ISegment[length / 2];
var nodes = new INode[segments.Length + 1];
var rels = new IRelationship[segments.Length];
var prevNode = uniqNodes[0];
nodes[0] = prevNode;
for (var i = 0; i < segments.Length; i++)
{
var relIdx = (int)reader.ReadLong();
var nextNode = uniqNodes[(int)reader.ReadLong()]; // Start node is always 0, and isn't encoded in the sequence
// Negative rel index means this rel was traversed "inversed" from its direction
Relationship rel;
if (relIdx < 0)
{
rel = uniqRels[(-relIdx) - 1]; // -1 because rel idx are 1-indexed
rel.SetStartAndEnd(nextNode.Id, prevNode.Id);
}
else
{
rel = uniqRels[relIdx - 1];
rel.SetStartAndEnd(prevNode.Id, nextNode.Id);
}
nodes[i + 1] = nextNode;
rels[i] = rel;
segments[i] = new Segment(prevNode, rel, nextNode);
prevNode = nextNode;
}
return(new Path(segments.ToList(), nodes.ToList(), rels.ToList()));
}
