| public static TryGetDocKey ( object current ) : string | ||
| current | object | |
| return | string | |
private IEnumerable <RavenJObject> ProcessResults(MoreLikeThisQuery query, IEnumerable <JsonDocument> documents, CancellationToken token)
{
IndexingFunc transformFunc = null;
if (string.IsNullOrEmpty(query.ResultsTransformer) == false)
{
var transformGenerator = database.IndexDefinitionStorage.GetTransformer(query.ResultsTransformer);
if (transformGenerator != null && transformGenerator.TransformResultsDefinition != null)
{
transformFunc = transformGenerator.TransformResultsDefinition;
}
else
{
throw new InvalidOperationException("The transformer " + query.ResultsTransformer + " was not found");
}
}
IEnumerable <RavenJObject> results;
var transformerErrors = new List <string>();
if (transformFunc == null)
{
results = documents.Select(x => x.ToJson());
}
else
{
var robustEnumerator = new RobustEnumerator(token, 100)
{
OnError =
(exception, o) =>
transformerErrors.Add(string.Format("Doc '{0}', Error: {1}", Index.TryGetDocKey(o),
exception.Message))
};
results = robustEnumerator
.RobustEnumeration(documents.Select(x => new DynamicJsonObject(x.ToJson())).GetEnumerator(), transformFunc)
.Select(JsonExtensions.ToJObject);
}
return(results);
}
public QueryResult Query(string index, IndexQuery query)
{
index = IndexDefinitionStorage.FixupIndexName(index);
var list = new List <JObject>();
var stale = false;
Tuple <DateTime, Guid> indexTimestamp = null;
TransactionalStorage.Batch(
actions =>
{
string entityName = null;
var viewGenerator = IndexDefinitionStorage.GetViewGenerator(index);
if (viewGenerator == null)
{
throw new InvalidOperationException("Could not find index named: " + index);
}
entityName = viewGenerator.ForEntityName;
stale = actions.Staleness.IsIndexStale(index, query.Cutoff, entityName);
indexTimestamp = actions.Staleness.IndexLastUpdatedAt(index);
var indexFailureInformation = actions.Indexing.GetFailureRate(index);
if (indexFailureInformation.IsInvalidIndex)
{
throw new IndexDisabledException(indexFailureInformation);
}
var docRetriever = new DocumentRetriever(actions, ReadTriggers);
var indexDefinition = GetIndexDefinition(index);
var fieldsToFetch = new FieldsToFetch(query.FieldsToFetch, query.AggregationOperation,
viewGenerator.ReduceDefinition == null
? Abstractions.Data.Constants.DocumentIdFieldName
: Abstractions.Data.Constants.ReduceKeyFieldName);
var collection = from queryResult in IndexStorage.Query(index, query, result => docRetriever.ShouldIncludeResultInQuery(result, indexDefinition, fieldsToFetch), fieldsToFetch)
select docRetriever.RetrieveDocumentForQuery(queryResult, indexDefinition, fieldsToFetch)
into doc
where doc != null
select doc;
var transformerErrors = new List <string>();
IEnumerable <JObject> results;
if (viewGenerator != null &&
query.SkipTransformResults == false &&
viewGenerator.TransformResultsDefinition != null)
{
var robustEnumerator = new RobustEnumerator
{
OnError =
(exception, o) =>
transformerErrors.Add(string.Format("Doc '{0}', Error: {1}", Index.TryGetDocKey(o),
exception.Message))
};
var dynamicJsonObjects = collection.Select(x => new DynamicJsonObject(x.ToJson())).ToArray();
results =
robustEnumerator.RobustEnumeration(
dynamicJsonObjects,
source => viewGenerator.TransformResultsDefinition(docRetriever, source))
.Select(JsonExtensions.ToJObject);
}
else
{
results = collection.Select(x => x.ToJson());
}
list.AddRange(results);
if (transformerErrors.Count > 0)
{
throw new InvalidOperationException("The transform results function failed.\r\n" + string.Join("\r\n", transformerErrors));
}
});
return(new QueryResult
{
IndexName = index,
Results = list,
IsStale = stale,
SkippedResults = query.SkippedResults.Value,
TotalResults = query.TotalSize.Value,
IndexTimestamp = indexTimestamp.Item1,
IndexEtag = indexTimestamp.Item2
});
}
