//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldPopulateAndUpdate() throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void ShouldPopulateAndUpdate()
{
// GIVEN
WithPopulator(IndexProvider.getPopulator(Descriptor, IndexSamplingConfig, heapBufferFactory(1024)), p => p.add(Updates(ValueSet1)));
using (IndexAccessor accessor = IndexProvider.getOnlineAccessor(Descriptor, IndexSamplingConfig))
{
// WHEN
using (IndexUpdater updater = accessor.NewUpdater(IndexUpdateMode.ONLINE))
{
//JAVA TO C# CONVERTER WARNING: Java wildcard generics have no direct equivalent in .NET:
//ORIGINAL LINE: java.util.List<IndexEntryUpdate<?>> updates = updates(valueSet2);
IList <IndexEntryUpdate <object> > updates = updates(ValueSet2);
//JAVA TO C# CONVERTER WARNING: Java wildcard generics have no direct equivalent in .NET:
//ORIGINAL LINE: for (IndexEntryUpdate<?> update : updates)
foreach (IndexEntryUpdate <object> update in updates)
{
updater.Process(update);
}
}
// THEN
using (IndexReader reader = new QueryResultComparingIndexReader(accessor.NewReader()))
{
int propertyKeyId = Descriptor.schema().PropertyId;
foreach (NodeAndValue entry in Iterables.concat(ValueSet1, ValueSet2))
{
NodeValueIterator nodes = new NodeValueIterator();
reader.Query(nodes, IndexOrder.NONE, false, IndexQuery.exact(propertyKeyId, entry.Value));
assertEquals(entry.NodeId, nodes.Next());
assertFalse(nodes.HasNext());
}
}
}
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: private void assertHasAllValues(java.util.List<NodeAndValue> values) throws java.io.IOException, org.neo4j.internal.kernel.api.exceptions.schema.IndexNotApplicableKernelException
private void AssertHasAllValues(IList <NodeAndValue> values)
{
using (IndexAccessor accessor = IndexProvider.getOnlineAccessor(Descriptor, IndexSamplingConfig))
{
using (IndexReader reader = new QueryResultComparingIndexReader(accessor.NewReader()))
{
int propertyKeyId = Descriptor.schema().PropertyId;
foreach (NodeAndValue entry in values)
{
NodeValueIterator nodes = new NodeValueIterator();
reader.Query(nodes, IndexOrder.NONE, false, IndexQuery.exact(propertyKeyId, entry.Value));
assertEquals(entry.NodeId, nodes.Next());
assertFalse(nodes.HasNext());
}
}
}
}
/// <summary>
/// This test target a bug around minimal splitter in gbpTree and unique index populator. It goes like this:
/// Given a set of updates (value,entityId):
/// - ("A01",1), ("A90",3), ("A9",2)
/// If ("A01",1) and ("A90",3) would cause a split to occur they would produce a minimal splitter ("A9",3).
/// Note that the value in this minimal splitter is equal to our last update ("A9",2).
/// When making insertions with the unique populator we don't compare entityId which would means ("A9",2)
/// ends up to the right of ("A9",3), even though it belongs to the left because of entityId being smaller.
/// At this point the tree is in an inconsistent (key on wrong side of splitter).
///
/// To work around this problem the entityId is only kept in minimal splitter if strictly necessary to divide
/// left from right. This means the minimal splitter between ("A01",1) and ("A90",3) is ("A9",-1) and ("A9",2)
/// will correctly be placed on the right side of this splitter.
///
/// To trigger this scenario this test first insert a bunch of values that are all unique and that will cause a
/// split to happen. This is the firstBatch.
/// The second batch are constructed so that at least one of them will have a value equal to the splitter key
/// constructed during the firstBatch.
/// It's important that the secondBatch has ids that are lower than the first batch to align with example described above.
/// </summary>
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldPopulateAndRemoveEntriesWithSimilarMinimalSplitter() throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void ShouldPopulateAndRemoveEntriesWithSimilarMinimalSplitter()
{
string prefix = "Work out your own salvation. Do not depend on others. ";
int nbrOfNodes = 200;
long nodeId = 0;
// Second batch has lower ids
IList <NodeAndValue> secondBatch = new List <NodeAndValue>();
for (int i = 0; i < nbrOfNodes; i++)
{
secondBatch.Add(new NodeAndValue(nodeId++, stringValue(prefix + i)));
}
// First batch has higher ids and minimal splitter among values in first batch will be found among second batch
IList <NodeAndValue> firstBatch = new List <NodeAndValue>();
for (int i = 0; i < nbrOfNodes; i++)
{
firstBatch.Add(new NodeAndValue(nodeId++, stringValue(prefix + i + " " + i)));
}
WithPopulator(IndexProvider.getPopulator(Descriptor, IndexSamplingConfig, heapBufferFactory(1024)), p =>
{
p.add(Updates(firstBatch));
p.add(Updates(secondBatch));
// Index should be consistent
});
IList <NodeAndValue> toRemove = new List <NodeAndValue>();
((IList <NodeAndValue>)toRemove).AddRange(firstBatch);
((IList <NodeAndValue>)toRemove).AddRange(secondBatch);
Collections.shuffle(toRemove);
// And we should be able to remove the entries in any order
using (IndexAccessor accessor = IndexProvider.getOnlineAccessor(Descriptor, IndexSamplingConfig))
{
// WHEN
using (IndexUpdater updater = accessor.NewUpdater(IndexUpdateMode.ONLINE))
{
foreach (NodeAndValue nodeAndValue in toRemove)
{
updater.Process(IndexEntryUpdate.Remove(nodeAndValue.NodeId, Descriptor, nodeAndValue.Value));
}
}
// THEN
using (IndexReader reader = new QueryResultComparingIndexReader(accessor.NewReader()))
{
int propertyKeyId = Descriptor.schema().PropertyId;
foreach (NodeAndValue nodeAndValue in toRemove)
{
NodeValueIterator nodes = new NodeValueIterator();
reader.Query(nodes, IndexOrder.NONE, false, IndexQuery.exact(propertyKeyId, nodeAndValue.Value));
bool anyHits = false;
StringJoiner nodesStillLeft = new StringJoiner(", ", "[", "]");
while (nodes.HasNext())
{
anyHits = true;
nodesStillLeft.add(Convert.ToString(nodes.Next()));
}
assertFalse("Expected this query to have zero hits but found " + nodesStillLeft.ToString(), anyHits);
}
}
}
}