public IEnumerable<node> GetAllNodes()
{
List<node> result = new List<node>();
using (var context = new GraphContext())
{
foreach (var n in context.Nodes)
{
var nreturn = new node()
{
id = n.Id,
label = n.Name,
adjacentNodes = new node.adjacentNodesType()
};
nreturn.adjacentNodes.AddRange(n.Paths.Select(a => a.DestinationNode.Id));
result.Add(nreturn);
}
}
return result;
}
public void UpdateNodes(IEnumerable<node> wiredNodes)
{
List<Node> nodes =
wiredNodes.Select(n => new Node()
{
Id = n.id,
Name = n.label
}).ToList();
foreach (var node in nodes)
{
foreach (var neighbour in wiredNodes.First(n => n.id == node.Id).adjacentNodes)
node.Paths.Add(new Path()
{
DestinationNode = nodes.First(n => n.Id == neighbour),
OriginNode = node
});
}
using (var context = new GraphContext())
{
var existingNodes = context.Nodes;
foreach (var path in context.Paths)
{
context.Paths.Remove(path);
}
foreach (var node in existingNodes)
{
context.Nodes.Remove(node);
}
context.SaveChanges();
foreach (var node in nodes)
{
context.Nodes.Add(node);
}
context.SaveChanges();
}
logger.InfoFormat("Updated database with provided nodes.");
}
