internal static string SingleProperty(HtmlNode node, NodeCommandObject cmd)
{
string value = string.Empty;
MethodInfo info = node.GetType().GetMethod(cmd.Commands[0].Operation);
object[] param = new object[] { cmd.Xpath };
if (cmd.Commands[0].Property.Equals("Attribute"))
{
HtmlNode _nodeFromRoot = (HtmlNode)info.Invoke(node, param);
value = _nodeFromRoot.Attributes[cmd.Commands[0].Value].Value;
}
else
{
try
{
HtmlNode _nodeFromRoot = (HtmlNode)info.Invoke(node, param);
value = (string)_nodeFromRoot.GetType().GetProperty(cmd.Commands[0].Property).GetValue(_nodeFromRoot, null);
}
catch
{
}
}
return value;
}
public void Initailize()
{
Client = new HtmlWeb();
CurrentCommand = new NodeCommandObject();
CommandCollection = new List<NodeCommandObject>();
DomainObjectCollection = new List<Dictionary<string, string>>();
}
public void RetrieveNextCrawlSequence()
{
SQLAccess.Clear();
SQLAccess.Procedure = "NextCrawlSequence";
var table = SQLAccess.ExecuteProcedure();
this.CrawlSequence = new CrawlSequenceObject(table.Rows[0]);
if (!string.IsNullOrEmpty(this.CrawlSequence.SiteUrl))
CurrentUrl = this.CrawlSequence.SiteUrl;
if (this.CrawlSequence.InitialNodeCommandId != 0)
CurrentCommand = new NodeCommandObject(this.CrawlSequence.InitialNodeCommandId);
}
public NodeCommandObject(long id)
{
SQLAccess.Clear();
SQLAccess.Procedure = "NodeCommandById";
SQLAccess.Parameters.Add(@"id", id);
var table = SQLAccess.ExecuteProcedure();
if (table.Rows.Count > 0)
{
var nodeCommand = new NodeCommandObject(table.Rows[0]);
this.Id = nodeCommand.Id;
this.Name = nodeCommand.Name;
this.Description = nodeCommand.Description;
this.Xpath = nodeCommand.Xpath;
this.Commands = nodeCommand.Commands;
}
}
internal static string DualProperty(HtmlNode node, NodeCommandObject cmd)
{
string value = string.Empty;
MethodInfo info = node.GetType().GetMethod(cmd.Commands[0].Operation);
object[] param = new object[] { cmd.Xpath };
try
{
HtmlNode _nodeFromRoot = (HtmlNode)info.Invoke(node, param);
var initial = _nodeFromRoot.GetType().GetProperty(cmd.Commands[0].Property).GetValue(_nodeFromRoot);
value = (string)initial.GetType().GetProperty(cmd.Commands[1].Property).GetValue(initial);
}
catch
{
}
return value;
}
