protected virtual QueryNode VisitMatches(MatchesNode node, AzureQueryOptimizerState state)
{
QueryNode regexOptions = (QueryNode)null;
QueryNode leftNode = this.Visit(node.LeftNode, state);
QueryNode rightNode = this.Visit(node.RightNode, state);
if (node.RegexOptions != null)
{
regexOptions = this.Visit(node.RegexOptions, state);
}
return((QueryNode) new MatchesNode(leftNode, rightNode, regexOptions, state.Boost));
}
protected QueryBase VisitMatches(MatchesNode node, ElasticQueryMapperState state)
{
// TODO: Move these 3 lines to separate method for reuse?
var fieldName = GetFormattedFieldName(node);
var valueNode = node.GetValueNode <string>();
var value = ValueFormatter.FormatValueForIndexStorage(valueNode.Value, fieldName);
// TODO: RegexOptions - does Elastic support this?
return(new RegexpQuery
{
Field = fieldName,
Value = value.ToStringOrEmpty(),
Boost = node.Boost
});
}
/// <summary>
/// Regex query not currently supported in NEST, and there's no straightforward way to append raw query text to any parsed queries.
/// </summary>
/// <param name="node"></param>
/// <param name="state"></param>
/// <returns></returns>
protected virtual BaseQuery HandleMatches(MatchesNode node, ElasticSearchQueryMapperState state)
{
//var fieldName = GetFormattedFieldName(node);
//var valueNode = QueryHelper.GetValueNode<string>(node);
//var formattedValue = ValueFormatter.FormatValueForIndexStorage(valueNode.Value);
//using (var sw = new StringWriter())
//{
// using (var jw = new JsonTextWriter(sw))
// {
// jw.WriteStartObject();
// jw.WritePropertyName("regexp");
// jw.WriteStartObject();
// jw.WritePropertyName(fieldName);
// jw.WriteStartObject();
// jw.WritePropertyName("value");
// jw.WriteValue(formattedValue);
// if (Math.Abs(node.Boost - 1f) > float.Epsilon)
// {
// jw.WritePropertyName("boost");
// jw.WriteValue(node.Boost);
// }
// jw.WriteEndObject();
// if (node.RegexOptions != null && !string.IsNullOrEmpty(node.RegexOptions.ToString()))
// {
// jw.WritePropertyName("flags");
// jw.WriteValue(node.RegexOptions);
// }
// jw.WriteEndObject();
// jw.WriteEndObject();
// }
// var rawQuery = sw.ToString();
// return rawQuery;
//}
//rawQuery = "{\"regexp\" : { \"" + fieldName + "\" : { \"value\" : \"" + formattedValue + "\", \"flags\" : \"" + node.RegexOptions + "\" } }";
throw new NotImplementedException("Matches expression is not implemented (i.e. no regex queries)");
}
