public void HasTitanVertexCentricIndex()
{
var prop = new WeaverTitanPropertyAttribute("test");
prop.EdgesForVertexCentricIndexing = new [] { typeof(One), typeof(Two) };
Assert.True(prop.HasTitanVertexCentricIndex(typeof(One)), "Incorrect result: One.");
Assert.True(prop.HasTitanVertexCentricIndex(typeof(Two)), "Incorrect result: Two.");
Assert.False(prop.HasTitanVertexCentricIndex(typeof(Empty)), "Incorrect result: Empty.");
}
/*--------------------------------------------------------------------------------------------*/
private static void ConfirmVciState <TEdge, TVert> (TEdge pEdge,
Expression <Func <TVert, object> > pProperty)
where TEdge : IWeaverEdge where TVert : IWeaverVertex
{
Type et = typeof(TEdge);
Type vt = typeof(TVert);
WeaverTitanUtil.GetAndVerifyElementAttribute <WeaverTitanEdgeAttribute> (et);
WeaverTitanUtil.GetAndVerifyElementAttribute <WeaverTitanVertexAttribute> (vt);
if (pEdge.OutVertexType != vt && pEdge.InVertexType != vt)
{
throw new WeaverException("Vertex type '" + vt.Name + "' is not valid for edge type '" +
et.Name + "'.");
}
WeaverPropPair wpp = WeaverUtil.GetPropertyAttribute(pProperty);
WeaverTitanPropertyAttribute att = WeaverTitanUtil.GetAndVerifyTitanPropertyAttribute(wpp);
if (!att.HasTitanVertexCentricIndex(et))
{
throw new WeaverException("Property '" + vt.Name + "." + wpp.Info.Name + "' does not have a " +
"vertex-centric index for edge '" + et.Name + "'.");
}
}
public void HasTitanVertexCentricIndexNull()
{
var prop = new WeaverTitanPropertyAttribute("test");
prop.EdgesForVertexCentricIndexing = null;
Assert.False(prop.HasTitanVertexCentricIndex(typeof(Empty)), "Incorrect result: Empty.");
}
/*--------------------------------------------------------------------------------------------*/
private void AppendEdgeVciProps(StringBuilder pStr, string pAlias, Type pEdgeType,
IEnumerable <WeaverPropPair> pProps)
{
foreach (WeaverPropPair wpp in pProps)
{
WeaverTitanPropertyAttribute att =
WeaverTitanUtil.GetAndVerifyTitanPropertyAttribute(wpp, true);
if (att == null || !att.HasTitanVertexCentricIndex(pEdgeType))
{
continue;
}
pStr.Append((pStr.Length > 0 ? "," : "") + att.DbName + ":" + pAlias);
}
}
/*--------------------------------------------------------------------------------------------*/
public IWeaverPathPipeEnd BuildEdgeLabel <T>(
Func <string, IWeaverVarAlias> pGetPropVarAliasByDbName) where T : IWeaverEdge
{
Type et = typeof(T);
var e = WeaverTitanUtil.GetAndVerifyElementAttribute <WeaverTitanEdgeAttribute>(et);
var ivc = e.InConn;
var ovc = e.OutConn;
var props = new List <WeaverPropPair>();
props.AddRange(WeaverUtil.GetElementPropertyAttributes(e.OutVertex));
props.AddRange(WeaverUtil.GetElementPropertyAttributes(e.InVertex));
var keys = new HashSet <string>();
var sigs = new HashSet <string>();
foreach (WeaverPropPair wpp in props)
{
WeaverTitanPropertyAttribute att =
WeaverTitanUtil.GetAndVerifyTitanPropertyAttribute(wpp, true);
if (att == null)
{
continue;
}
string alias = pGetPropVarAliasByDbName(att.DbName).Name;
if (att.HasTitanVertexCentricIndex(et))
{
keys.Add(alias);
continue;
}
sigs.Add(alias);
}
////
AddCustom("makeType()");
AddCustom("name(" + Path.Query.AddParam(new WeaverQueryVal(e.DbName)) + ")");
if (keys.Count > 0)
{
AddCustom("primaryKey(" + string.Join(",", keys) + ")");
}
if (sigs.Count > 0)
{
AddCustom("signature(" + string.Join(",", sigs) + ")");
}
// An edge label is out-unique, if a vertex has at most one outgoing edge for that label.
// "father" is of an out-unique edge label, since each god has at most one father.
// https://github.com/thinkaurelius/titan/wiki/Type-Definition-Overview
if (ivc == WeaverEdgeConn.InOne || ivc == WeaverEdgeConn.InZeroOrOne)
{
AddCustom("unique(IN)");
}
if (ovc == WeaverEdgeConn.OutOne || ovc == WeaverEdgeConn.OutZeroOrOne)
{
AddCustom("unique(OUT)");
}
return(AddCustom("makeEdgeLabel()"));
}