/// <summary>
/// Queries the data store with Mongo Bson filter and projection.
/// </summary>
/// <param name="parser">The parser.</param>
/// <returns>The query results collection.</returns>
/// <exception cref="WitsmlException"></exception>
protected List <T> QueryEntities(WitsmlQueryParser parser)
{
try
{
if (OptionsIn.RequestObjectSelectionCapability.True.Equals(parser.RequestObjectSelectionCapability()))
{
Logger.DebugFormat("Requesting {0} query template.", DbCollectionName);
var queryTemplate = CreateQueryTemplate();
return(queryTemplate.AsList());
}
var returnElements = parser.ReturnElements();
Logger.DebugFormat("Querying with return elements '{0}'", returnElements);
var fields = GetProjectionPropertyNames(parser);
var ignored = GetIgnoredElementNamesForQuery(parser);
Logger.DebugFormat("Querying {0} MongoDb collection.", DbCollectionName);
var query = new MongoDbQuery <T>(Container, GetCollection(), parser, fields, ignored);
return(FilterRecurringElements(query));
}
catch (MongoException ex)
{
Logger.ErrorFormat("Error querying {0} MongoDb collection: {1}", DbCollectionName, ex);
throw new WitsmlException(ErrorCodes.ErrorReadingFromDataStore, ex);
}
}
/// <summary>
/// Filters the recurring elements within each data object returned by the specified query.
/// </summary>
/// <param name="query">The query.</param>
/// <returns>The query results collection.</returns>
protected virtual List <T> FilterRecurringElements(MongoDbQuery <T> query)
{
// NOTE: this method can be overridden to include additional context
return(query.FilterRecurringElements(query.Execute()));
}