AddTweetDateRangeToNetworkDescription
(
XmlDocument graphMLXmlDocument,
NetworkDescriber networkDescriber
)
{
Debug.Assert(graphMLXmlDocument != null);
Debug.Assert(networkDescriber != null);
XmlNamespaceManager oXmlNamespaceManager = new XmlNamespaceManager(
graphMLXmlDocument.NameTable);
oXmlNamespaceManager.AddNamespace("g",
GraphMLXmlDocument.GraphMLNamespaceUri);
DateTime oMinimumRelationshipDateUtc = DateTime.MaxValue;
DateTime oMaximumRelationshipDateUtc = DateTime.MinValue;
// Loop through the graph's edges.
foreach ( XmlNode oEdgeXmlNode in
graphMLXmlDocument.DocumentElement.SelectNodes(
"g:graph/g:edge", oXmlNamespaceManager) )
{
// Get the value of the edge's "relationship" GraphML-Attribute.
String sRelationship;
if ( !TryGetEdgeGraphMLAttributeValue(oEdgeXmlNode,
NodeXLGraphMLUtil.EdgeRelationshipID, oXmlNamespaceManager,
out sRelationship) )
{
continue;
}
switch (sRelationship)
{
case TwitterGraphMLUtil.RepliesToRelationship:
case TwitterGraphMLUtil.MentionsRelationship:
case TwitterGraphMLUtil.NonRepliesToNonMentionsRelationship:
// Get the value of the edge's "relationship date"
// GraphML-Attribute.
String sRelationshipDateUtc;
if ( !TryGetEdgeGraphMLAttributeValue(oEdgeXmlNode,
TwitterGraphMLUtil.EdgeRelationshipDateUtcID,
oXmlNamespaceManager, out sRelationshipDateUtc) )
{
break;
}
DateTime oRelationshipDateUtc;
try
{
// Note that the relationship date may be in an
// unrecognized format.
oRelationshipDateUtc =
DateTimeUtil2.FromCultureInvariantString(
sRelationshipDateUtc);
}
catch (FormatException)
{
break;
}
if (oRelationshipDateUtc < oMinimumRelationshipDateUtc)
{
oMinimumRelationshipDateUtc = oRelationshipDateUtc;
}
if (oRelationshipDateUtc > oMaximumRelationshipDateUtc)
{
oMaximumRelationshipDateUtc = oRelationshipDateUtc;
}
break;
default:
break;
}
}
if (oMinimumRelationshipDateUtc != DateTime.MaxValue)
{
networkDescriber.AddSentence(
"The tweets in the network were tweeted over the {0} period"
+ " from {1} to {2}."
,
networkDescriber.FormatDuration(oMinimumRelationshipDateUtc,
oMaximumRelationshipDateUtc),
networkDescriber.FormatEventTime(oMinimumRelationshipDateUtc),
networkDescriber.FormatEventTime(oMaximumRelationshipDateUtc)
);
}
}
AddTweetDateRangeToNetworkDescription
(
XmlDocument graphMLXmlDocument,
NetworkDescriber networkDescriber
)
{
Debug.Assert(graphMLXmlDocument != null);
Debug.Assert(networkDescriber != null);
XmlNamespaceManager oXmlNamespaceManager = new XmlNamespaceManager(
graphMLXmlDocument.NameTable);
oXmlNamespaceManager.AddNamespace("g",
GraphMLXmlDocument.GraphMLNamespaceUri);
DateTime oMinimumRelationshipDateUtc = DateTime.MaxValue;
DateTime oMaximumRelationshipDateUtc = DateTime.MinValue;
// Loop through the graph's edges.
foreach (XmlNode oEdgeXmlNode in
graphMLXmlDocument.DocumentElement.SelectNodes(
"g:graph/g:edge", oXmlNamespaceManager))
{
// Get the value of the edge's "relationship" GraphML-Attribute.
String sRelationship;
if (!TryGetEdgeGraphMLAttributeValue(oEdgeXmlNode,
NodeXLGraphMLUtil.EdgeRelationshipID, oXmlNamespaceManager,
out sRelationship))
{
continue;
}
switch (sRelationship)
{
case TwitterGraphMLUtil.RepliesToRelationship:
case TwitterGraphMLUtil.MentionsRelationship:
case TwitterGraphMLUtil.NonRepliesToNonMentionsRelationship:
// Get the value of the edge's "relationship date"
// GraphML-Attribute.
String sRelationshipDateUtc;
if (!TryGetEdgeGraphMLAttributeValue(oEdgeXmlNode,
TwitterGraphMLUtil.EdgeRelationshipDateUtcID,
oXmlNamespaceManager, out sRelationshipDateUtc))
{
break;
}
DateTime oRelationshipDateUtc;
try
{
// Note that the relationship date may be in an
// unrecognized format.
oRelationshipDateUtc =
DateTimeUtil2.FromCultureInvariantString(
sRelationshipDateUtc);
}
catch (FormatException)
{
break;
}
if (oRelationshipDateUtc < oMinimumRelationshipDateUtc)
{
oMinimumRelationshipDateUtc = oRelationshipDateUtc;
}
if (oRelationshipDateUtc > oMaximumRelationshipDateUtc)
{
oMaximumRelationshipDateUtc = oRelationshipDateUtc;
}
break;
default:
break;
}
}
if (oMinimumRelationshipDateUtc != DateTime.MaxValue)
{
networkDescriber.AddSentence(
"The tweets in the network were tweeted over the {0} period"
+ " from {1} to {2}."
,
networkDescriber.FormatDuration(oMinimumRelationshipDateUtc,
oMaximumRelationshipDateUtc),
networkDescriber.FormatEventTime(oMinimumRelationshipDateUtc),
networkDescriber.FormatEventTime(oMaximumRelationshipDateUtc)
);
}
}
