public void GetDocumentsWithIdStartingWith(string idPrefix, string matches, string exclude, int start, int pageSize,
CancellationToken token, ref int nextStart, Action <RavenJObject> addDoc,
string transformer = null, Dictionary <string, RavenJToken> transformerParameters = null,
string skipAfter = null)
{
if (idPrefix == null)
{
throw new ArgumentNullException("idPrefix");
}
idPrefix = idPrefix.Trim();
var canPerformRapidPagination = nextStart > 0 && start == nextStart;
var actualStart = canPerformRapidPagination ? start : 0;
var addedDocs = 0;
var matchedDocs = 0;
TransactionalStorage.Batch(
actions =>
{
var docsToSkip = canPerformRapidPagination ? 0 : start;
int docCount;
AbstractTransformer storedTransformer = null;
if (transformer != null)
{
storedTransformer = IndexDefinitionStorage.GetTransformer(transformer);
if (storedTransformer == null)
{
throw new InvalidOperationException("No transformer with the name: " + transformer);
}
}
do
{
docCount = 0;
var docs = actions.Documents.GetDocumentsWithIdStartingWith(idPrefix, actualStart, pageSize, string.IsNullOrEmpty(skipAfter) ? null : skipAfter);
var documentRetriever = new DocumentRetriever(actions, Database.ReadTriggers, Database.InFlightTransactionalState, transformerParameters);
foreach (var doc in docs)
{
token.ThrowIfCancellationRequested();
docCount++;
var keyTest = doc.Key.Substring(idPrefix.Length);
if (!WildcardMatcher.Matches(matches, keyTest) || WildcardMatcher.MatchesExclusion(exclude, keyTest))
{
continue;
}
DocumentRetriever.EnsureIdInMetadata(doc);
var nonAuthoritativeInformationBehavior = Database.InFlightTransactionalState.GetNonAuthoritativeInformationBehavior <JsonDocument>(null, doc.Key);
var document = nonAuthoritativeInformationBehavior != null ? nonAuthoritativeInformationBehavior(doc) : doc;
document = documentRetriever.ExecuteReadTriggers(document, null, ReadOperation.Load);
if (document == null)
{
continue;
}
matchedDocs++;
if (matchedDocs <= docsToSkip)
{
continue;
}
token.ThrowIfCancellationRequested();
if (storedTransformer != null)
{
using (new CurrentTransformationScope(Database, documentRetriever))
{
var transformed =
storedTransformer.TransformResultsDefinition(new[] { new DynamicJsonObject(document.ToJson()) })
.Select(x => JsonExtensions.ToJObject(x))
.ToArray();
if (transformed.Length == 0)
{
throw new InvalidOperationException("The transform results function failed on a document: " + document.Key);
}
var transformedJsonDocument = new JsonDocument
{
Etag = document.Etag.HashWith(storedTransformer.GetHashCodeBytes()).HashWith(documentRetriever.Etag),
NonAuthoritativeInformation = document.NonAuthoritativeInformation,
LastModified = document.LastModified,
DataAsJson = new RavenJObject {
{ "$values", new RavenJArray(transformed) }
},
};
addDoc(transformedJsonDocument.ToJson());
}
}
else
{
addDoc(document.ToJson());
}
addedDocs++;
if (addedDocs >= pageSize)
{
break;
}
}
actualStart += pageSize;
}while (docCount > 0 && addedDocs < pageSize && actualStart > 0 && actualStart < int.MaxValue);
});
if (addedDocs != pageSize)
{
nextStart = start; // will mark as last page
}
else if (canPerformRapidPagination)
{
nextStart = start + matchedDocs;
}
else
{
nextStart = actualStart;
}
}
public void GetDocumentsWithIdStartingWith(string idPrefix, string matches, string exclude, int start, int pageSize,
CancellationToken token, ref int nextStart, Action <JsonDocument> addDoc,
string transformer = null, Dictionary <string, RavenJToken> transformerParameters = null,
string skipAfter = null)
{
if (idPrefix == null)
{
throw new ArgumentNullException("idPrefix");
}
idPrefix = idPrefix.Trim();
var canPerformRapidPagination = nextStart > 0 && start == nextStart;
var actualStart = canPerformRapidPagination ? start : 0;
var addedDocs = 0;
var docCountOnLastAdd = 0;
var matchedDocs = 0;
TransactionalStorage.Batch(
actions =>
{
var docsToSkip = canPerformRapidPagination ? 0 : start;
int docCount;
AbstractTransformer storedTransformer = null;
if (transformer != null)
{
storedTransformer = IndexDefinitionStorage.GetTransformer(transformer);
if (storedTransformer == null)
{
throw new InvalidOperationException("No transformer with the name: " + transformer);
}
}
do
{
Database.WorkContext.UpdateFoundWork();
docCount = 0;
var docs = actions.Documents.GetDocumentsWithIdStartingWith(idPrefix, actualStart, pageSize, string.IsNullOrEmpty(skipAfter) ? null : skipAfter);
var documentRetriever = new DocumentRetriever(Database.Configuration, actions, Database.ReadTriggers, transformerParameters);
foreach (var doc in docs)
{
token.ThrowIfCancellationRequested();
docCount++;
if (docCount - docCountOnLastAdd > 1000)
{
addDoc(null); // heartbeat
}
var keyTest = doc.Key.Substring(idPrefix.Length);
if (!WildcardMatcher.Matches(matches, keyTest) || WildcardMatcher.MatchesExclusion(exclude, keyTest))
{
continue;
}
JsonDocument.EnsureIdInMetadata(doc);
var nonAuthoritativeInformationBehavior = actions.InFlightStateSnapshot.GetNonAuthoritativeInformationBehavior <JsonDocument>(null, doc.Key);
var document = nonAuthoritativeInformationBehavior != null ? nonAuthoritativeInformationBehavior(doc) : doc;
document = documentRetriever.ExecuteReadTriggers(document, null, ReadOperation.Load);
if (document == null)
{
continue;
}
matchedDocs++;
if (matchedDocs <= docsToSkip)
{
continue;
}
token.ThrowIfCancellationRequested();
document = TransformDocumentIfNeeded(document, storedTransformer, documentRetriever);
addDoc(document);
addedDocs++;
docCountOnLastAdd = docCount;
if (addedDocs >= pageSize)
{
break;
}
}
actualStart += pageSize;
} while (docCount > 0 && addedDocs < pageSize && actualStart > 0 && actualStart < int.MaxValue);
});
if (addedDocs != pageSize)
{
nextStart = start; // will mark as last page
}
else if (canPerformRapidPagination)
{
nextStart = start + matchedDocs;
}
else
{
nextStart = actualStart;
}
}