public static HttpStatusCode Post(GremlinScript script)
{
string response;
var status = Rest.HttpRest.Post(ConnectionManager.Connection().GremlinUrl, script.GetScript(), out response);
return(status);
}
public void FilterClause()
{
GremlinScript script = new GremlinScript();
script.Append("g.v(0)")
.Filter(it => it.GetProperty("MyProp") == "SomeValue");
Assert.IsTrue(script.ToString() == "g.v(0).filter{it.getProperty('MyProp') == 'SomeValue'}");
}
public void FilterClauseCompareToIgnoreCase2()
{
GremlinScript script = new GremlinScript();
script.Append("g.v(0)")
.Filter(it => it.GetProperty("MyProp").CompareToIgnoreCase(it.GetProperty("CompareProperty").Name()));
Assert.IsTrue(script.ToString() == "g.v(0).filter{it.getProperty('MyProp').compareToIgnoreCase(it.getProperty('CompareProperty').name)}");
}
public void FilterClauseChainCommands()
{
GremlinScript script = new GremlinScript();
script.Append("g.v(0)")
.Filter(it => it.GetProperty("MyProp").ToLowerCase().Contains("ContainThis"));
Assert.IsTrue(script.ToString() == "g.v(0).filter{it.getProperty('MyProp').toLowerCase().contains('ContainThis')}");
}
public static GremlinScript RelationshipIndexLookup(this GremlinScript query, IEnumerable <KeyValuePair <string, string> > propertyKeyValue)
{
var sb = new StringBuilder();
foreach (var kvp in propertyKeyValue)
{
sb.AppendFormat("{0}'{1}':'{2}'", sb.Length > 0 ? "," : "", kvp.Key, kvp.Value);
}
return(query.Append("g.E[[{0}]]", sb.ToString()));
}
public static GremlinScript In(this GremlinScript query, params string[] relationshipName)
{
if (relationshipName.Count() == 1)
{
return(query.Append(".in({0})", relationshipName[0]));
}
// Can not send more then one element via parameters
var relationships = relationshipName.Aggregate(new StringBuilder(), (sb, item) => sb.AppendFormat("{1}'{0}'", item, sb.Length == 0 ? string.Empty : ","));
return(query.Append(string.Format(".in({0})", relationships)));
}
public static GremlinScript NodeIndexLookup(this GremlinScript query, IEnumerable <KeyValuePair <string, object> > propertyKeyValue)
{
var sb = new StringBuilder();
foreach (var kvp in propertyKeyValue)
{
if (kvp.Value is string)
{
sb.AppendFormat("{0}'{1}':'{2}'", sb.Length > 0 ? "," : "", kvp.Key, kvp.Value);
}
else if (kvp.Value is bool)
{
sb.AppendFormat("{0}'{1}':{2}", sb.Length > 0 ? "," : "", kvp.Key, (bool)kvp.Value ? "true" : "false");
}
else
{
sb.AppendFormat("{0}'{1}':{2}", sb.Length > 0 ? "," : "", kvp.Key, kvp.Value);
}
}
return(query.Append("g.V[[{0}]]", sb.ToString()));
}
public static IEnumerable <T> Post <T>(ConnectionElement connection, GremlinScript script) where T : IGraphObject
{
var typeParameterType = typeof(T);
string response;
var status = Rest.HttpRest.Post(connection.GremlinUrl, script.GetScript(), out response);
if (typeParameterType == typeof(Node))
{
return((IEnumerable <T>)RestNodeStore.ParseNodeJson(response));
}
if (typeParameterType == typeof(Relationship))
{
return((IEnumerable <T>)RestRelationshipStore.ParseRelationshipJson(response));
}
if (typeParameterType == typeof(Path))
{
return((IEnumerable <T>)Path.ParseJson(response));
}
throw new Exception("Return type " + typeParameterType + " not implemented");
}
public static GremlinScript gE(this GremlinScript query, Relationship relationship)
{
return(gE(query, relationship.Id));
}
public static GremlinScript gE(this GremlinScript query, IEnumerable <long> Ids)
{
return(query.Append("g.e({0})", string.Join(",", Ids)));
}
public static GremlinScript ToPipe(this GremlinScript query)
{
return(query.Append("._()"));
}
public void Table()
{
GremlinScript script = new GremlinScript();
script.NewTable("t")
.NodeIndexLookup(new Dictionary<string, object>() { { NodeProperty.FirstName.ToString() , "Jack" }, { NodeProperty.LastName.ToString(), "Shaw" } })
.Filter(it => it.GetProperty(NodeProperty.UID.ToString()) == "jshaw")
.As("UserNode")
.OutE(RelationshipType.Likes.ToString())
.As("LikeRel")
.InV()
.As("FriendNode")
.Table("t", "UserNode", "LikeRel", "FriendNode")
.Append("{{it}}{{it.getProperty('{0}')}}{{it.getProperty('{1}')}} >> -1; t", RelationshipProperty.Date.ToString(), NodeProperty.FirstName.ToString());
Assert.IsTrue(script.ToString() == "t = new Table();g.V[['FirstName':'Jack','LastName':'Shaw']].filter{it.getProperty('UID') == 'jshaw'}.as('UserNode').outE('Likes').as('LikeRel').inV().as('FriendNode').table(t, ['UserNode','LikeRel','FriendNode']){it}{it.getProperty('Date')}{it.getProperty('FirstName')} >> -1; t");
}
public static DataTable GetTable(ConnectionElement connection, GremlinScript script)
{
string response;
var status = Rest.HttpRest.Post(connection.GremlinUrl, script.GetScript(), out response);
var joResponse = JObject.Parse(response);
var jaColumns = (JArray)joResponse["columns"];
var jaData = (JArray)joResponse["data"];
var dt = new DataTable();
var initColumns = true;
var colIndex = 0;
foreach (JArray jRow in jaData)
{
var row = new List <object>();
foreach (var jCol in jRow)
{
switch (jCol.Type)
{
case JTokenType.String:
row.Add(jCol.ToString());
if (initColumns)
{
dt.Columns.Add(jaColumns[colIndex].ToString(), typeof(string));
colIndex++;
}
break;
case JTokenType.Object:
if (jCol["self"] == null)
{
row.Add(jCol.ToString());
if (initColumns)
{
dt.Columns.Add(jaColumns[colIndex].ToString(), typeof(string));
colIndex++;
}
}
else
{
string self = jCol["self"].ToString();
string[] selfArray = self.Split('/');
if (selfArray.Length > 2 && selfArray[selfArray.Length - 2] == "node")
{
row.Add(RestNodeStore.CreateNodeFromJson((JObject)jCol));
if (initColumns)
{
dt.Columns.Add(jaColumns[colIndex].ToString(), typeof(Node));
colIndex++;
}
}
else if (selfArray.Length > 2 && selfArray[selfArray.Length - 2] == "relationship")
{
row.Add(RestRelationshipStore.CreateRelationshipFromJson((JObject)jCol));
if (initColumns)
{
dt.Columns.Add(jaColumns[colIndex].ToString(), typeof(Relationship));
colIndex++;
}
}
else
{
// Not a Node or Relationship - return as string
row.Add(jCol.ToString());
if (initColumns)
{
dt.Columns.Add(jaColumns[colIndex].ToString(), typeof(string));
colIndex++;
}
}
}
break;
case JTokenType.Integer:
row.Add(jCol.ToString());
if (initColumns)
{
dt.Columns.Add(jaColumns[colIndex].ToString(), typeof(int));
colIndex++;
}
break;
case JTokenType.Float:
row.Add(jCol.ToString());
if (initColumns)
{
dt.Columns.Add(jaColumns[colIndex].ToString(), typeof(float));
colIndex++;
}
break;
case JTokenType.Date:
row.Add(jCol.ToString());
if (initColumns)
{
dt.Columns.Add(jaColumns[colIndex].ToString(), typeof(DateTime));
colIndex++;
}
break;
case JTokenType.Boolean:
row.Add(jCol.ToString());
if (initColumns)
{
dt.Columns.Add(jaColumns[colIndex].ToString(), typeof(bool));
colIndex++;
}
break;
default:
row.Add(jCol.ToString());
if (initColumns)
{
dt.Columns.Add(jaColumns[colIndex].ToString(), typeof(string));
colIndex++;
}
break;
}
}
initColumns = false;
var dtRow = dt.NewRow();
dtRow.ItemArray = row.ToArray();
dt.Rows.Add(dtRow);
}
return(dt);
}
public static GremlinScript Aggregate(this GremlinScript query, string variable)
{
return(query.Append(".aggregate({0})", variable));
}
public static GremlinScript In(this GremlinScript query, params Enum[] relationshipName)
{
return(In(query, relationshipName.Select(r => r.ToString()).ToArray()));
}
public static GremlinScript Table(this GremlinScript query, string name)
{
return(query.Append(string.Format(".table({0})", name)));
}
public static GremlinScript Array <T>(this GremlinScript query, params T[] items)
{
return(query.Append(string.Format("[{0}]",
items.Aggregate(new StringBuilder(), (sb, item) => sb.AppendFormat("{1}{2}{0}{2}", item, sb.Length > 0 ? "," : string.Empty, typeof(T) == typeof(string) ? "'" : string.Empty)))));
}
public static GremlinScript gV(this GremlinScript query, Node node)
{
return(gV(query, node.Id));
}
public static GremlinScript Retain(this GremlinScript query, string variable)
{
return(query.Append(".retain({0})", variable));
}
public static GremlinScript Except(this GremlinScript query, string variable)
{
return(query.Append(".except({0})", variable));
}
public static GremlinScript gE(this GremlinScript query, IEnumerable <Relationship> relationships)
{
return(gE(query, relationships.Select(s => s.Id)));
}
public static GremlinScript In(this GremlinScript query)
{
return(query.Append(".in()"));
}
public static GremlinScript Unique(this GremlinScript query)
{
return(query.Append(".unique()"));
}
public static GremlinScript Table(this GremlinScript query, string name, params string[] columnNames)
{
string names = string.Join(",", columnNames.Select(r => string.Concat("'", r, "'")));
return(query.Append(string.Format(".table({0}, [{1}])", name, names)));
}
public static GremlinScript As(this GremlinScript query, string label)
{
return(query.Append(".as({0})", label));
}
public static IEnumerable <T> Post <T>(GremlinScript script) where T : IGraphObject
{
return(Post <T>(ConnectionManager.Connection(), script));
}
public static GremlinScript gV(this GremlinScript query, IEnumerable <Node> nodes)
{
return(gV(query, nodes.Select(s => s.Id)));
}
public static DataTable GetTable(GremlinScript script)
{
return(GetTable(ConnectionManager.Connection(), script));
}
public void FilterClauseCompound()
{
GremlinScript script = new GremlinScript();
script.Append("g.v(0)")
.Filter(it => it.GetProperty("MyProp") && !it.GetProperty("NotProp") || it.GetProperty("OrProp").ToLowerCase() == "lower Value");
Assert.IsTrue(script.ToString() == "g.v(0).filter{it.getProperty('MyProp') && !it.getProperty('NotProp') || it.getProperty('OrProp').toLowerCase() == 'lower Value'}");
}
static void Main(string[] args)
{
//var dnode = Node.GetNode(81);
//var node = Node.CreateNode("MyType");
//node.Properties.SetProperty("myDate", new DateTime(2011, 12, 15));
//node.SaveProperties();
//Neo4jRestNet.CleanDbPlugin.CleanDbPlugin.CleanDb();
// Get Root Node from graphDB
var rootNode = Node.GetRootNode();
// Create a User Node with no Properties
var nodeUser = Node.CreateNode(NodeType.User.ToString());
// Create a User Node with Properties
var prop = new Properties();
prop.SetProperty(NodeProperty.FirstName.ToString(), "Joe");
prop.SetProperty(NodeProperty.LastName.ToString(), "Smith");
var nodeUserWithName = Node.CreateNode(NodeType.User.ToString(), prop);
// Create Relationships to Nodes
rootNode.CreateRelationshipTo(nodeUser, RelationshipType.Likes.ToString());
rootNode.CreateRelationshipTo(nodeUserWithName, RelationshipType.Likes.ToString());
// Create Relationship with Properties
var relProp = new Properties();
relProp.SetProperty(RelationshipProperty.Name.ToString(), "MyRelationship");
relProp.SetProperty("CustomRelProp", "CustomPropValue");
nodeUserWithName.CreateRelationshipTo(nodeUser, RelationshipType.Knows.ToString(), relProp);
// Get Id From Node
var id = rootNode.Id;
var geid = rootNode.EncryptedId;
// Gremlin
// Same as above
var sameLikeNodes = Gremlin.Post<Node>(new GremlinScript(rootNode).Out(RelationshipType.Likes.ToString()));
// More Gremlin example
var script = new GremlinScript(rootNode);
script.OutE()
.InV()
.OutE()
.Filter("it.getProperty('{0}') == '{1}'", RelationshipProperty.Name, "MyRelationship");
var myRelationship = Gremlin.Post<Relationship>(script);
// More Gremlin example
var script1 = new GremlinScript(rootNode);
script1.OutE()
.InV()
.OutE()
.Filter(it => it.GetProperty(RelationshipProperty.Name.ToString()) == "MyRelationship");
IEnumerable<Relationship> myRelationship1 = Gremlin.Post<Relationship>(script1);
// Gremlin returning a datatable
var tblScript = new GremlinScript();
tblScript.NewTable("t")
.gV(rootNode)
.Out(RelationshipType.Likes.ToString())
.As("Like")
.Table("t", "Like")
.Append(" >> -1; t;");
DataTable dt = Gremlin.GetTable(tblScript);
// Basic Cypher query
var c1 = new Cypher();
c1.Start(s => s.Node("A", 0));
c1.Return( r => r.Node("A"));
DataTable tbl = c1.Post();
// Cypher with Match clause
var c2 = new Cypher();
c2.Start(s => s.Node("A", 0));
c2.Match(m => m.Node("A").To("r", "Likes").Node("B"));
c2.Return(r => r.Node("A").Relationship("r").Node("B"));
tbl = c2.Post();
// Cypher with multi start and return optional property
var c3 = new Cypher();
c3.Start(s => s.Node("A", 0, 1));
c3.Match(m => m.Node("A").Any("r", "Likes").Node("C"));
// c3.Return(r => r.Node("C").Node("C").Property("Name?"));
tbl = c3.Post();
// Multi Start
var c4 = new Cypher();
c4.Start(s => s.Node("A", 0).Node("B",1));
c4.Return(r => r.Node("A").Node("B"));
tbl = c4.Post();
// Cypher with Where clause
var c5 = new Cypher();
c5.Start(s => s.Node("A", 0, 1));
c5.Where(w => w.Node("A").Property("Age?") < 30 && w.Node("A").Property("Name?") == "Tobias" || !(w.Node("A").Property("Name?") == "Tobias"));
c5.Return(r => r.Node("A"));
tbl = c5.Post();
// Alt Syntax
var c6 = new Cypher();
c6.Start(s => {
s.Node("A", 0);
s.Node("B", 1);
return s;
});
c6.Return(r => {
r.Node("A");
r.Node("B");
return r;
});
tbl = c6.Post();
// Alt Syntax
var c7 = new Cypher();
c7.Start(s => s.Node("MyNode", "Index-Name", "QueryString"));
c7.Start(s => s.Node("A", 0));
c7.Start(s => s.Node("B", 1));
c7.Return(r => r.Node("A"));
c7.Return(r => r.Node("B"));
tbl = c7.Post();
// Test Cypher Dates
var date = new DateTime(2011, 12, 15);
//// Basic Cypher query
//var c1 = new Cypher();
//c1.Start(s => s.Node("A", 81));
//c1.Where(w => w.Node("A").Property("myDate") < date.AddDays(2)
// && w.Node("A").Property("myDate") == new DateTime(2011, 12, 15));
//c1.Return(r => r.Node("A"));
//tbl = c1.Post();
}
public static GremlinScript Each(this GremlinScript query, string each, params object[] args)
{
return(query.Append(string.Format(".each{{{0}}}", string.Format(each, args))));
}
public static GremlinScript NewTable(this GremlinScript query, string name)
{
return(query.Append(string.Format("{0} = new Table();", name)));
}
public static GremlinScript ToList(this GremlinScript query)
{
return(query.Append(".toList()"));
}
public static GremlinScript NewArray(this GremlinScript query, string name)
{
return(query.Append(string.Format("{0} = [];", name)));
}
public static GremlinScript gE(this GremlinScript query, long Id)
{
return(query.Append("g.e({0})", Id));
}
public void FilterClauseEqualBool()
{
GremlinScript script = new GremlinScript();
script.Append("g.v(0)")
.Filter(it => it.GetProperty("MyProp") == true);
Assert.IsTrue(script.ToString() == "g.v(0).filter{it.getProperty('MyProp') == true}");
}
public static GremlinScript Reverse(this GremlinScript query)
{
return(query.Append(".reverse()"));
}