/// <summary>
/// Gets the geoLocators asynchronously; returns one GeoLocator
/// </summary>
public Task <ServiceProviderDatumCollection <GeoLocator> > GetGeoLocatorsAsync()
{
var result = new ServiceProviderDatumCollection <GeoLocator>();
result.Add(new GeoLocator(Name, ExternalName)
{
ServiceProviderGroup = new ServiceProviderGroup(this.ServiceProvider)
});
return(TaskEx.FromResult(result));
}
/// <summary>
/// Converts the storage model to a QueryViewModel that can be used within Lite.
/// </summary>
/// <param name="messenger">The messenger the ViewModel should be connected to</param>
/// <param name="sources">The sources available for resolution of the Table</param>
/// <returns>A LiteQueryViewModel</returns>
public async Task <LiteQueryViewModel> ToUserQueryViewModel(Messenger messenger, ServiceProviderDatumCollection <FeatureSourceDescriptor> sources)
{
LiteQueryViewModel result = null;
if (TransactionContext.ActiveContext.ProjectName == this.ProjectName)
{
var serviceProvider = ServiceProviderManager.Instance.ServiceProvider(ProviderName);
if (serviceProvider != null)
{
var group = ProviderGroup.ToServiceProviderGroup(serviceProvider);
var source = sources.Find(group);
if (source != null)
{
var table = source.TableDescriptors[TableName];
// Check the table, since it can have disappeared in the mean-time
if (table != null)
{
// Ensure we have a table with fields and all
await table.EvaluateAsync();
var parameterDefinitions = this.ParameterDefinitions.ToParameterDefinitionCollection(serviceProvider);
var queryDefinition = new FeatureCollectionQueryDefinition()
{
ServiceProviderGroup = table.ServiceProviderGroup,
Context = ServiceProviderDatumContext.User,
Name = Name,
ExternalName = ExternalName,
TableDescriptor = table,
ParameterDefinitions = parameterDefinitions
};
result = new LiteQueryViewModel(messenger, queryDefinition, PredicateText);
}
}
}
}
return(result);
}
