private IEnumerable <RavenJObject> GetQueryResults(IndexQuery query, AbstractViewGenerator viewGenerator, DocumentRetriever docRetriever, IEnumerable <JsonDocument> results, List <string> transformerErrors, Action <double> loadingDocumentsFinish, Action <double> transformerFinish, bool showTimings, CancellationToken token) { if (query.PageSize <= 0) // maybe they just want the stats? { return(Enumerable.Empty <RavenJObject>()); } IndexingFunc transformFunc = null; // Check an explicitly declared one first if (string.IsNullOrEmpty(query.ResultsTransformer) == false) { var transformGenerator = IndexDefinitionStorage.GetTransformer(query.ResultsTransformer); if (transformGenerator != null && transformGenerator.TransformResultsDefinition != null) { transformFunc = transformGenerator.TransformResultsDefinition; } else { throw new InvalidOperationException("The transformer " + query.ResultsTransformer + " was not found"); } } if (transformFunc == null) { var resultsWithoutTransformer = results.Select(x => { var ravenJObject = x.ToJson(); if (query.IsDistinct) { ravenJObject[Constants.DocumentIdFieldName] = x.Key; } return(ravenJObject); }); return(showTimings ? new TimedEnumerable <RavenJObject>(resultsWithoutTransformer, loadingDocumentsFinish) : resultsWithoutTransformer); } var dynamicJsonObjects = results.Select(x => { var ravenJObject = x.ToJson(); if (query.IsDistinct) { ravenJObject[Constants.DocumentIdFieldName] = x.Key; } return(new DynamicLuceneOrParentDocumntObject(docRetriever, ravenJObject)); }); var robustEnumerator = new RobustEnumerator(token, 100, onError: (exception, o) => transformerErrors.Add(string.Format("Doc '{0}', Error: {1}", Index.TryGetDocKey(o), exception.Message))); var resultsWithTransformer = robustEnumerator .RobustEnumeration(dynamicJsonObjects.Cast <object>().GetEnumerator(), transformFunc) .Select(JsonExtensions.ToJObject); return(showTimings ? new TimedEnumerable <RavenJObject>(resultsWithTransformer, transformerFinish) : resultsWithTransformer); }
private IEnumerable <RavenJObject> GetQueryResults(IndexQuery query, AbstractViewGenerator viewGenerator, DocumentRetriever docRetriever, IEnumerable <JsonDocument> results, List <string> transformerErrors, CancellationToken token) { if (query.PageSize <= 0) // maybe they just want the stats? { return(Enumerable.Empty <RavenJObject>()); } IndexingFunc transformFunc = null; // Check an explicitly declared one first if (string.IsNullOrEmpty(query.ResultsTransformer) == false) { var transformGenerator = IndexDefinitionStorage.GetTransformer(query.ResultsTransformer); if (transformGenerator != null && transformGenerator.TransformResultsDefinition != null) { transformFunc = transformGenerator.TransformResultsDefinition; } else { throw new InvalidOperationException("The transformer " + query.ResultsTransformer + " was not found"); } } else if (query.SkipTransformResults == false && viewGenerator.TransformResultsDefinition != null) { transformFunc = source => viewGenerator.TransformResultsDefinition(docRetriever, source); } if (transformFunc == null) { return(results.Select(x => x.ToJson())); } var dynamicJsonObjects = results.Select(x => new DynamicLuceneOrParentDocumntObject(docRetriever, x.ToJson())); var robustEnumerator = new RobustEnumerator(token, 100) { OnError = (exception, o) => transformerErrors.Add(string.Format("Doc '{0}', Error: {1}", Index.TryGetDocKey(o), exception.Message)) }; return(robustEnumerator.RobustEnumeration( dynamicJsonObjects.Cast <object>().GetEnumerator(), transformFunc) .Select(JsonExtensions.ToJObject)); }
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 }); }
public RemoteQueryResults Query(LinearQuery query) { var viewGenerator = queryCache.GetOrAdd(query.Query, s => new DynamicViewCompiler("query", new IndexDefinition { Map = query.Query, }, new AbstractDynamicCompilationExtension[0]) { RequiresSelectNewAnonymousType = false }.GenerateInstance()); var results = new List <string>(); var errors = new List <string>(); int lastResult = 0; int finalResult = 0; remoteStorage.Batch(actions => { var firstAndLastDocumentIds = actions.Documents.FirstAndLastDocumentIds(); finalResult = firstAndLastDocumentIds.Item2; var start = Math.Max(firstAndLastDocumentIds.Item1, query.Start); var matchingDocs = actions.Documents.DocumentsById(start, firstAndLastDocumentIds.Item2); if (string.IsNullOrEmpty(viewGenerator.ForEntityName) == false) //optimization { matchingDocs = matchingDocs.Where(x => x.Item1.Metadata.Value <string>("Raven-Entity-Name") == viewGenerator.ForEntityName); } var docs = matchingDocs .Select(x => { DocumentRetriever.EnsureIdInMetadata(x.Item1); return(x); }) .Select(x => { lastResult = x.Item2; return(new DynamicJsonObject(x.Item1.ToJson())); }); var robustEnumerator = new RobustEnumerator { OnError = (exception, o) => errors.Add(String.Format("Doc '{0}', Error: {1}", Index.TryGetDocKey(o), exception.Message)) }; results.AddRange( robustEnumerator.RobustEnumeration(docs, viewGenerator.MapDefinition) .Take(query.PageSize) .Select(result => JsonExtensions.ToJObject(result).ToString()) ); }); return(new RemoteQueryResults { LastScannedResult = lastResult, TotalResults = finalResult, Errors = errors.ToArray(), QueryCacheSize = queryCache.Count, Results = results.ToArray() }); }