public static IDisposable GetIdentifiersOfMappedDocuments(this Index self, string startsWith, int start, int take, out IEnumerable <string> docIds)
{
if (self.Type.IsMapReduce() == false)
{
throw new NotSupportedException("Getting doc ids for map indexes is not supported");
}
using (var scope = new DisposeableScope())
{
TransactionOperationContext indexContext;
scope.EnsureDispose(self._contextPool.AllocateOperationContext(out indexContext));
RavenTransaction tx;
scope.EnsureDispose(tx = indexContext.OpenReadTransaction());
var tree = tx.InnerTransaction.ReadTree(MapReduceIndexBase <MapReduceIndexDefinition> .MapPhaseTreeName);
if (tree == null)
{
docIds = Enumerable.Empty <string>();
return(scope);
}
TreeIterator it;
scope.EnsureDispose(it = tree.Iterate(false));
docIds = IterateKeys(it, startsWith, start, take, indexContext);
return(scope.Delay());
}
}
public static IDisposable GetReduceTree(this Index self, string docId, out IEnumerable <ReduceTree> trees)
{
using (var scope = new DisposeableScope())
{
TransactionOperationContext indexContext;
scope.EnsureDispose(self._contextPool.AllocateOperationContext(out indexContext));
RavenTransaction tx;
scope.EnsureDispose(tx = indexContext.OpenReadTransaction());
var mapPhaseTree = tx.InnerTransaction.ReadTree(MapReduceIndexBase <MapReduceIndexDefinition> .MapPhaseTreeName);
if (mapPhaseTree == null)
{
trees = Enumerable.Empty <ReduceTree>();
return(scope);
}
var reducePhaseTree = tx.InnerTransaction.ReadTree(MapReduceIndexBase <MapReduceIndexDefinition> .ReducePhaseTreeName);
if (reducePhaseTree == null)
{
trees = Enumerable.Empty <ReduceTree>();
return(scope);
}
Slice docIdAsSlice;
scope.EnsureDispose(Slice.From(indexContext.Allocator, docId, out docIdAsSlice));
FixedSizeTree mapEntries;
scope.EnsureDispose(mapEntries = mapPhaseTree.FixedTreeFor(docId, sizeof(long)));
FixedSizeTree typePerHash;
scope.EnsureDispose(typePerHash = reducePhaseTree.FixedTreeFor(MapReduceIndexBase <MapReduceIndexDefinition> .ResultsStoreTypesTreeName, sizeof(byte)));
trees = IterateTrees(self, mapEntries, reducePhaseTree, typePerHash, indexContext);
return(scope.Delay());
}
}
