public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
if (value is QueryMatchMode)
{
QueryMatchMode matchMode = (QueryMatchMode)value;
switch (matchMode)
{
case QueryMatchMode.Any:
return(GisEditor.LanguageManager.GetStringResource("FindFeaturesWindowAdvancedQueryAny"));
case QueryMatchMode.All:
default:
return(GisEditor.LanguageManager.GetStringResource("FindFeaturesWindowAdvancedQueryAll"));
}
}
else
{
return(Binding.DoNothing);
}
}
/// <summary>
/// Sets the match mode for this query, which is by default <see cref="QueryMatchMode.All"/>.
/// This should be called before adding any other queries.
/// </summary>
public QueryWrapper <T> SetMode(QueryMatchMode mode)
{
Mode = mode;
return(this);
}
public IEnumerable <Feature> FindFeatures(ObservableCollection <QueryConditionViewModel> conditions, QueryMatchMode queryMatchMode)
{
IEnumerable <Feature> filteredFeatures = new Collection <Feature>();
switch (queryMatchMode)
{
case QueryMatchMode.All:
var featuresGroup = conditions.Select(condition => AdvancedQueryViewModel.FilterFeatures(condition)).ToArray();
for (int i = 0; i < featuresGroup.Length; i++)
{
if (i == 0)
{
filteredFeatures = featuresGroup[i];
}
else
{
return(Intersect(featuresGroup[i - 1], featuresGroup[i]));
}
}
break;
case QueryMatchMode.Any:
filteredFeatures = conditions.SelectMany(condition => AdvancedQueryViewModel.FilterFeatures(condition));
Dictionary <string, Feature> result = new Dictionary <string, Feature>();
foreach (var item in filteredFeatures)
{
Feature newFeature = GisEditor.SelectionManager.GetSelectionOverlay().CreateHighlightFeature(item, (FeatureLayer)item.Tag);
if (!result.ContainsKey(newFeature.Id))
{
result.Add(newFeature.Id, newFeature);
}
}
return(result.Values);
}
return(filteredFeatures);
}
