private ResourceIterator <Relationship> GetRelationshipSelectionIterator(KernelTransaction transaction, Direction direction, int[] typeIds)
{
NodeCursor node = transaction.AmbientNodeCursor();
transaction.DataRead().singleNode(Id, node);
if (!node.Next())
{
throw new NotFoundException(format("Node %d not found", _nodeId));
}
switch (direction.innerEnumValue)
{
case Direction.InnerEnum.OUTGOING:
return(outgoingIterator(transaction.Cursors(), node, typeIds, this));
case Direction.InnerEnum.INCOMING:
return(incomingIterator(transaction.Cursors(), node, typeIds, this));
case Direction.InnerEnum.BOTH:
return(allIterator(transaction.Cursors(), node, typeIds, this));
default:
throw new System.InvalidOperationException("Unknown direction " + direction);
}
}
public virtual int getDegree(RelationshipType type, Direction direction)
{
KernelTransaction transaction = SafeAcquireTransaction();
int typeId = transaction.TokenRead().relationshipType(type.Name());
if (typeId == NO_TOKEN)
{ // This type doesn't even exist. Return 0
return(0);
}
using (Statement ignore = transaction.AcquireStatement())
{
NodeCursor nodes = transaction.AmbientNodeCursor();
SingleNode(transaction, nodes);
switch (direction.innerEnumValue)
{
case Direction.InnerEnum.OUTGOING:
return(Nodes.countOutgoing(nodes, transaction.Cursors(), typeId));
case Direction.InnerEnum.INCOMING:
return(Nodes.countIncoming(nodes, transaction.Cursors(), typeId));
case Direction.InnerEnum.BOTH:
return(Nodes.countAll(nodes, transaction.Cursors(), typeId));
default:
throw new System.InvalidOperationException("Unknown direction " + direction);
}
}
}
public virtual int getDegree(Direction direction)
{
KernelTransaction transaction = SafeAcquireTransaction();
using (Statement ignore = transaction.AcquireStatement())
{
NodeCursor nodes = transaction.AmbientNodeCursor();
SingleNode(transaction, nodes);
switch (direction.innerEnumValue)
{
case Direction.InnerEnum.OUTGOING:
return(Nodes.countOutgoing(nodes, transaction.Cursors()));
case Direction.InnerEnum.INCOMING:
return(Nodes.countIncoming(nodes, transaction.Cursors()));
case Direction.InnerEnum.BOTH:
return(Nodes.countAll(nodes, transaction.Cursors()));
default:
throw new System.InvalidOperationException("Unknown direction " + direction);
}
}
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public org.neo4j.graphdb.index.IndexHits<org.neo4j.graphdb.Node> query(org.neo4j.kernel.api.KernelTransaction ktx, String name, Object queryOrQueryObject, org.neo4j.graphdb.GraphDatabaseService graphDatabaseService) throws org.neo4j.internal.kernel.api.exceptions.explicitindex.ExplicitIndexNotFoundKernelException
public IndexHits <Node> query(KernelTransaction ktx, string name, object queryOrQueryObject, GraphDatabaseService graphDatabaseService)
{
NodeExplicitIndexCursor cursor = ktx.Cursors().allocateNodeExplicitIndexCursor();
ktx.IndexRead().nodeExplicitIndexQuery(cursor, name, queryOrQueryObject);
return(new CursorWrappingNodeIndexHits(cursor, graphDatabaseService, ktx, name));
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public org.neo4j.graphdb.index.IndexHits<org.neo4j.graphdb.Node> get(org.neo4j.kernel.api.KernelTransaction ktx, String name, String key, Object value, org.neo4j.graphdb.GraphDatabaseService graphDatabaseService) throws org.neo4j.internal.kernel.api.exceptions.explicitindex.ExplicitIndexNotFoundKernelException
public IndexHits <Node> get(KernelTransaction ktx, string name, string key, object value, GraphDatabaseService graphDatabaseService)
{
NodeExplicitIndexCursor cursor = ktx.Cursors().allocateNodeExplicitIndexCursor();
ktx.IndexRead().nodeExplicitIndexLookup(cursor, name, key, value);
return(new CursorWrappingNodeIndexHits(cursor, graphDatabaseService, ktx, name));
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public org.neo4j.graphdb.index.IndexHits<org.neo4j.graphdb.Relationship> query(org.neo4j.kernel.api.KernelTransaction ktx, String name, Object queryOrQueryObject, org.neo4j.graphdb.GraphDatabaseService graphDatabaseService) throws org.neo4j.internal.kernel.api.exceptions.explicitindex.ExplicitIndexNotFoundKernelException
public IndexHits <Relationship> query(KernelTransaction ktx, string name, object queryOrQueryObject, GraphDatabaseService graphDatabaseService)
{
RelationshipExplicitIndexCursor cursor = ktx.Cursors().allocateRelationshipExplicitIndexCursor();
ktx.IndexRead().relationshipExplicitIndexQuery(cursor, name, queryOrQueryObject, -1, -1);
return(new CursorWrappingRelationshipIndexHits(cursor, graphDatabaseService, ktx, name));
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public org.neo4j.graphdb.index.IndexHits<org.neo4j.graphdb.Relationship> get(org.neo4j.kernel.api.KernelTransaction ktx, String name, String key, Object value, org.neo4j.graphdb.GraphDatabaseService graphDatabaseService) throws org.neo4j.internal.kernel.api.exceptions.explicitindex.ExplicitIndexNotFoundKernelException
public IndexHits <Relationship> get(KernelTransaction ktx, string name, string key, object value, GraphDatabaseService graphDatabaseService)
{
RelationshipExplicitIndexCursor cursor = ktx.Cursors().allocateRelationshipExplicitIndexCursor();
ktx.IndexRead().relationshipExplicitIndexLookup(cursor, name, key, value, -1, -1);
return(new CursorWrappingRelationshipIndexHits(cursor, graphDatabaseService, ktx, name));
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldHandleCompositeSizesCloseToTheLimit() throws org.neo4j.internal.kernel.api.exceptions.KernelException
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void ShouldHandleCompositeSizesCloseToTheLimit()
{
// given
CreateIndex(KEY, KEY2);
// when a string longer than native string limit, but within lucene limit
int length = 20_000;
string string1 = Random.nextAlphaNumericString(length, length);
string string2 = Random.nextAlphaNumericString(length, length);
Node node;
using (Transaction tx = Db.beginTx())
{
node = Db.createNode(LABEL);
node.SetProperty(KEY, string1);
node.SetProperty(KEY2, string2);
tx.Success();
}
using (Transaction tx = Db.beginTx())
{
KernelTransaction ktx = Db.DependencyResolver.resolveDependency(typeof(ThreadToStatementContextBridge)).getKernelTransactionBoundToThisThread(true);
int labelId = ktx.TokenRead().nodeLabel(LABEL.Name());
int propertyKeyId1 = ktx.TokenRead().propertyKey(KEY);
int propertyKeyId2 = ktx.TokenRead().propertyKey(KEY2);
using (NodeValueIndexCursor cursor = ktx.Cursors().allocateNodeValueIndexCursor())
{
ktx.DataRead().nodeIndexSeek(TestIndexDescriptorFactory.forLabel(labelId, propertyKeyId1, propertyKeyId2), cursor, IndexOrder.NONE, false, IndexQuery.exact(propertyKeyId1, string1), IndexQuery.exact(propertyKeyId2, string2));
assertTrue(cursor.Next());
assertEquals(node.Id, cursor.NodeReference());
assertFalse(cursor.Next());
}
tx.Success();
}
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldAllowManyLabelsAndPropertyCursor()
public virtual void ShouldAllowManyLabelsAndPropertyCursor()
{
int propertyCount = 10;
int labelCount = 15;
GraphDatabaseAPI db = DbRule.GraphDatabaseAPI;
Node node;
using (Transaction tx = Db.beginTx())
{
node = Db.createNode();
for (int i = 0; i < propertyCount; i++)
{
node.SetProperty("foo" + i, "bar");
}
for (int i = 0; i < labelCount; i++)
{
node.AddLabel(label("label" + i));
}
tx.Success();
}
ISet <int> seenProperties = new HashSet <int>();
ISet <int> seenLabels = new HashSet <int>();
using (Transaction tx = Db.beginTx())
{
DependencyResolver resolver = Db.DependencyResolver;
ThreadToStatementContextBridge bridge = resolver.ResolveDependency(typeof(ThreadToStatementContextBridge));
KernelTransaction ktx = bridge.GetKernelTransactionBoundToThisThread(true);
using (NodeCursor nodes = ktx.Cursors().allocateNodeCursor(), PropertyCursor propertyCursor = ktx.Cursors().allocatePropertyCursor())
{
ktx.DataRead().singleNode(node.Id, nodes);
while (nodes.Next())
{
nodes.Properties(propertyCursor);
while (propertyCursor.Next())
{
seenProperties.Add(propertyCursor.PropertyKey());
}
LabelSet labels = nodes.Labels();
for (int i = 0; i < labels.NumberOfLabels(); i++)
{
seenLabels.Add(labels.Label(i));
}
}
}
tx.Success();
}
assertEquals(propertyCount, seenProperties.Count);
assertEquals(labelCount, seenLabels.Count);
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: private void assertIndexedNodesMatchesStoreNodes() throws Exception
private void AssertIndexedNodesMatchesStoreNodes()
{
int nodesInStore = 0;
Label label = Label.label(PERSON_LABEL);
using (Transaction tx = _db.beginTx())
{
KernelTransaction ktx = (( GraphDatabaseAPI )_db).DependencyResolver.resolveDependency(typeof(ThreadToStatementContextBridge)).getKernelTransactionBoundToThisThread(true);
IList <string> mismatches = new List <string>();
int labelId = ktx.TokenRead().nodeLabel(PERSON_LABEL);
int propertyKeyId = ktx.TokenRead().propertyKey(NAME_PROPERTY);
IndexReference index = ktx.SchemaRead().index(labelId, propertyKeyId);
using (NodeValueIndexCursor cursor = ktx.Cursors().allocateNodeValueIndexCursor())
{
// Node --> Index
foreach (Node node in filter(n => n.hasLabel(label) && n.hasProperty(NAME_PROPERTY), _db.AllNodes))
{
nodesInStore++;
string name = ( string )node.GetProperty(NAME_PROPERTY);
ktx.DataRead().nodeIndexSeek(index, cursor, IndexOrder.NONE, false, IndexQuery.exact(propertyKeyId, name));
bool found = false;
while (cursor.Next())
{
long indexedNode = cursor.NodeReference();
if (indexedNode == node.Id)
{
if (found)
{
mismatches.Add("Index has multiple entries for " + name + " and " + indexedNode);
}
found = true;
}
}
if (!found)
{
mismatches.Add("Index is missing entry for " + name + " " + node);
}
}
if (mismatches.Count > 0)
{
fail(join(mismatches.ToArray(), format("%n")));
}
// Node count == indexed node count
ktx.DataRead().nodeIndexSeek(index, cursor, IndexOrder.NONE, false, IndexQuery.exists(propertyKeyId));
int nodesInIndex = 0;
while (cursor.Next())
{
nodesInIndex++;
}
assertEquals(nodesInStore, nodesInIndex);
}
}
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void concurrentIndexPopulationAndInsertsShouldNotProduceDuplicates() throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void ConcurrentIndexPopulationAndInsertsShouldNotProduceDuplicates()
{
// Given
Config config = Config.defaults();
GraphDatabaseService db = NewEmbeddedGraphDatabaseWithSlowJobScheduler(config);
try
{
// When
using (Transaction tx = Db.beginTx())
{
Db.schema().indexFor(label(LABEL)).on(KEY).create();
tx.Success();
}
Node node;
using (Transaction tx = Db.beginTx())
{
node = Db.createNode(label(LABEL));
node.SetProperty(KEY, VALUE);
tx.Success();
}
using (Transaction tx = Db.beginTx())
{
Db.schema().awaitIndexesOnline(1, MINUTES);
tx.Success();
}
// Then
using (Transaction tx = Db.beginTx())
{
KernelTransaction ktx = (( GraphDatabaseAPI )db).DependencyResolver.resolveDependency(typeof(ThreadToStatementContextBridge)).getKernelTransactionBoundToThisThread(true);
IndexReference index = ktx.SchemaRead().index(ktx.TokenRead().nodeLabel(LABEL), ktx.TokenRead().propertyKey(KEY));
NodeValueIndexCursor cursor = ktx.Cursors().allocateNodeValueIndexCursor();
ktx.DataRead().nodeIndexSeek(index, cursor, IndexOrder.NONE, false, IndexQuery.exact(1, VALUE));
assertTrue(cursor.Next());
assertEquals(node.Id, cursor.NodeReference());
assertFalse(cursor.Next());
tx.Success();
}
}
finally
{
Db.shutdown();
}
}
public virtual int getDegree(RelationshipType type)
{
KernelTransaction transaction = SafeAcquireTransaction();
int typeId = transaction.TokenRead().relationshipType(type.Name());
if (typeId == NO_TOKEN)
{ // This type doesn't even exist. Return 0
return(0);
}
using (Statement ignore = transaction.AcquireStatement())
{
NodeCursor nodes = transaction.AmbientNodeCursor();
SingleNode(transaction, nodes);
return(Nodes.countAll(nodes, transaction.Cursors(), typeId));
}
}
