/// <summary>
/// Evaluates the specified query.
/// </summary>
/// <param name="query">The query.</param>
/// <param name="context">The context.</param>
/// <returns></returns>
/// <exception cref="System.ArgumentOutOfRangeException">query - This evaluator collection have no support for query type [" + query.queryType.ToString() + "]</exception>
public NodeQueryResult Evaluate(NodeQueryDefinition query, NodeQueryEvaluationContext context)
{
NodeQueryResult output = new NodeQueryResult();
if (ContainsKey(query.queryType))
{
output = this[query.queryType].EvaluateSingle(query, context);
}
else
{
throw new ArgumentOutOfRangeException(nameof(query), "This evaluator collection have no support for query type [" + query.queryType.ToString() + "]");
}
return(output);
}
/// <summary>
/// Evaluates the specified queries.
/// </summary>
/// <param name="queries">The queries.</param>
/// <param name="context">The context.</param>
/// <returns></returns>
public NodeQueryResult Evaluate(NodeQueryCollection queries, NodeQueryEvaluationContext context)
{
NodeQueryResult output = null;
if (logger != null)
{
logger.nextTabLevel();
}
Log("Query group [" + queries.Count + "]");
Int32 m = 0;
foreach (NodeQueryDefinition query in queries)
{
NodeQueryResult qr = null;
if (output != null)
{
switch (query.relation)
{
default:
case NodeQueryRelation.parallel:
break;
case NodeQueryRelation.serial:
if (output.ResultNodes.Any())
{
context = new NodeQueryEvaluationContext()
{
htmlNodes = new List <HtmlNode>(),
documentUrl = context.documentUrl
};
context.htmlNodes.AddRange(output.ResultNodes);
}
break;
}
}
if (query.IsGroupQuery)
{
qr = Evaluate(query.groupQueries, context);
}
else
{
qr = Evaluate(query, context);
}
if (output == null)
{
output = qr;
}
else
{
m++;
String r = output.Merge(qr, query.resultOperand, query.operand);
Log(m.ToString("D2") + " { " + r + " } ");
}
}
if (logger != null)
{
logger.prevTabLevel();
}
return(output);
}
