//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldComputeDegreeWithoutType() throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void ShouldComputeDegreeWithoutType()
{
// GIVEN
long node;
using (Transaction tx = Transaction())
{
Write write = tx.DataWrite();
node = write.NodeCreate();
write.RelationshipCreate(node, tx.TokenWrite().relationshipTypeGetOrCreateForName("R1"), write.NodeCreate());
write.RelationshipCreate(node, tx.TokenWrite().relationshipTypeGetOrCreateForName("R2"), write.NodeCreate());
write.RelationshipCreate(write.NodeCreate(), tx.TokenWrite().relationshipTypeGetOrCreateForName("R3"), node);
write.RelationshipCreate(node, tx.TokenWrite().relationshipTypeGetOrCreateForName("R4"), node);
tx.Success();
}
using (Transaction tx = Transaction())
{
Read read = tx.DataRead();
CursorFactory cursors = tx.Cursors();
using (NodeCursor nodes = cursors.AllocateNodeCursor())
{
assertThat(CompiledExpandUtils.NodeGetDegreeIfDense(read, node, nodes, cursors, OUTGOING), equalTo(3));
assertThat(CompiledExpandUtils.NodeGetDegreeIfDense(read, node, nodes, cursors, INCOMING), equalTo(2));
assertThat(CompiledExpandUtils.NodeGetDegreeIfDense(read, node, nodes, cursors, BOTH), equalTo(4));
}
}
}
private void CollectAndSortNodeIds(long nodeId, Transaction transaction, NodeCursor nodes)
{
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final org.eclipse.collections.api.set.primitive.MutableLongSet nodeIdSet = new org.eclipse.collections.impl.set.mutable.primitive.LongHashSet();
MutableLongSet nodeIdSet = new LongHashSet();
nodeIdSet.add(nodeId);
[email protected] read = transaction.DataRead();
read.SingleNode(nodeId, nodes);
if (!nodes.Next())
{
this._sortedNodeIds = _empty;
return;
}
using (RelationshipSelectionCursor rels = RelationshipSelections.allCursor(transaction.Cursors(), nodes, null))
{
while (rels.Next())
{
if (_firstRelId == NO_SUCH_RELATIONSHIP)
{
_firstRelId = rels.RelationshipReference();
}
nodeIdSet.add(rels.SourceNodeReference());
nodeIdSet.add(rels.TargetNodeReference());
}
}
this._sortedNodeIds = nodeIdSet.toSortedArray();
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: private static void singleNode(org.neo4j.internal.kernel.api.Read read, org.neo4j.internal.kernel.api.NodeCursor nodeCursor, long node) throws org.neo4j.internal.kernel.api.exceptions.EntityNotFoundException
private static void SingleNode(Read read, NodeCursor nodeCursor, long node)
{
read.SingleNode(node, nodeCursor);
if (!nodeCursor.Next())
{
throw new EntityNotFoundException(EntityType.NODE, node);
}
}
/// <summary>
/// Checks if given node has a given label.
/// </summary>
/// <param name="read"> The current Read instance </param>
/// <param name="nodeCursor"> The node cursor to use </param>
/// <param name="node"> The id of the node </param>
/// <param name="label"> The id of the label </param>
/// <returns> {@code true} if the node has the label, otherwise {@code false} </returns>
/// <exception cref="EntityNotFoundException"> if the node is not there. </exception>
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public static boolean nodeHasLabel(org.neo4j.internal.kernel.api.Read read, org.neo4j.internal.kernel.api.NodeCursor nodeCursor, long node, int label) throws org.neo4j.internal.kernel.api.exceptions.EntityNotFoundException
public static bool NodeHasLabel(Read read, NodeCursor nodeCursor, long node, int label)
{
if (label == StatementConstants.NO_SUCH_LABEL)
{
return(false);
}
SingleNode(read, nodeCursor, node);
return(nodeCursor.HasLabel(label));
}
private static int CalculateTotalDegree(NodeCursor nodeCursor, Direction direction, int[] relTypes, CursorFactory cursors)
{
int degree = 0;
foreach (int relType in relTypes)
{
degree += NodeGetDegree(nodeCursor, cursors, direction, relType);
}
return(degree);
}
private static int CalculateTotalDegreeIfDense(Read read, long node, NodeCursor nodeCursor, Direction direction, int[] relTypes, CursorFactory cursors)
{
read.SingleNode(node, nodeCursor);
if (!nodeCursor.Next())
{
return(0);
}
if (!nodeCursor.Dense)
{
return(NOT_DENSE_DEGREE);
}
return(CalculateTotalDegree(nodeCursor, direction, relTypes, cursors));
}
internal static int NodeGetDegreeIfDense(Read read, long node, NodeCursor nodeCursor, CursorFactory cursors, Direction direction, int type)
{
read.SingleNode(node, nodeCursor);
if (!nodeCursor.Next())
{
return(0);
}
if (!nodeCursor.Dense)
{
return(NOT_DENSE_DEGREE);
}
return(NodeGetDegree(nodeCursor, cursors, direction, type));
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void txReturnsCorrectIdWhenReadOnly() throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void TxReturnsCorrectIdWhenReadOnly()
{
ExecuteDummyTxs(Db, 42);
[email protected] tx = NewTransaction();
using (NodeCursor node = tx.Cursors().allocateNodeCursor())
{
tx.DataRead().singleNode(1, node);
node.Next();
}
tx.Success();
assertEquals(KernelTransaction.READ_ONLY, tx.CloseTransaction());
assertFalse(tx.Open);
}
private static int NodeGetDegree(NodeCursor nodeCursor, CursorFactory cursors, Direction direction, int type)
{
switch (direction.innerEnumValue)
{
case Direction.InnerEnum.OUTGOING:
return(countOutgoing(nodeCursor, cursors, type));
case Direction.InnerEnum.INCOMING:
return(countIncoming(nodeCursor, cursors, type));
case Direction.InnerEnum.BOTH:
return(countAll(nodeCursor, cursors, type));
default:
throw new System.InvalidOperationException("Unknown direction " + direction);
}
}
/// <summary>
/// Fetches a given property from a node
/// </summary>
/// <param name="read"> The current Read instance </param>
/// <param name="nodeCursor"> The node cursor to use </param>
/// <param name="node"> The id of the node </param>
/// <param name="propertyCursor"> The property cursor to use </param>
/// <param name="prop"> The id of the property to find </param>
/// <returns> The value of the given property </returns>
/// <exception cref="EntityNotFoundException"> If the node cannot be find. </exception>
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public static org.neo4j.values.storable.Value nodeGetProperty(org.neo4j.internal.kernel.api.Read read, org.neo4j.internal.kernel.api.NodeCursor nodeCursor, long node, org.neo4j.internal.kernel.api.PropertyCursor propertyCursor, int prop) throws org.neo4j.internal.kernel.api.exceptions.EntityNotFoundException
public static Value NodeGetProperty(Read read, NodeCursor nodeCursor, long node, PropertyCursor propertyCursor, int prop)
{
if (prop == StatementConstants.NO_SUCH_PROPERTY_KEY)
{
return(Values.NO_VALUE);
}
SingleNode(read, nodeCursor, node);
nodeCursor.Properties(propertyCursor);
while (propertyCursor.Next())
{
if (propertyCursor.PropertyKey() == prop)
{
return(propertyCursor.PropertyValue());
}
}
return(Values.NO_VALUE);
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldComputeDegreeWithType() throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void ShouldComputeDegreeWithType()
{
// GIVEN
long node;
int @in, @out, loop;
using (Transaction tx = Transaction())
{
Write write = tx.DataWrite();
node = write.NodeCreate();
TokenWrite tokenWrite = tx.TokenWrite();
@out = tokenWrite.RelationshipTypeGetOrCreateForName("OUT");
@in = tokenWrite.RelationshipTypeGetOrCreateForName("IN");
loop = tokenWrite.RelationshipTypeGetOrCreateForName("LOOP");
write.RelationshipCreate(node, @out, write.NodeCreate());
write.RelationshipCreate(node, @out, write.NodeCreate());
write.RelationshipCreate(write.NodeCreate(), @in, node);
write.RelationshipCreate(node, loop, node);
tx.Success();
}
using (Transaction tx = Transaction())
{
Read read = tx.DataRead();
CursorFactory cursors = tx.Cursors();
using (NodeCursor nodes = cursors.AllocateNodeCursor())
{
assertThat(nodeGetDegreeIfDense(read, node, nodes, cursors, OUTGOING, @out), equalTo(2));
assertThat(nodeGetDegreeIfDense(read, node, nodes, cursors, OUTGOING, @in), equalTo(0));
assertThat(nodeGetDegreeIfDense(read, node, nodes, cursors, OUTGOING, loop), equalTo(1));
assertThat(nodeGetDegreeIfDense(read, node, nodes, cursors, INCOMING, @out), equalTo(0));
assertThat(nodeGetDegreeIfDense(read, node, nodes, cursors, INCOMING, @in), equalTo(1));
assertThat(nodeGetDegreeIfDense(read, node, nodes, cursors, INCOMING, loop), equalTo(1));
assertThat(nodeGetDegreeIfDense(read, node, nodes, cursors, BOTH, @out), equalTo(2));
assertThat(nodeGetDegreeIfDense(read, node, nodes, cursors, BOTH, @in), equalTo(1));
assertThat(nodeGetDegreeIfDense(read, node, nodes, cursors, BOTH, loop), equalTo(1));
}
}
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public abstract void validateNodePropertyExistenceConstraint(org.neo4j.internal.kernel.api.NodeLabelIndexCursor allNodes, org.neo4j.internal.kernel.api.NodeCursor nodeCursor, org.neo4j.internal.kernel.api.PropertyCursor propertyCursor, org.neo4j.internal.kernel.api.schema.LabelSchemaDescriptor descriptor) throws org.neo4j.internal.kernel.api.exceptions.schema.CreateConstraintFailureException;
public abstract void ValidateNodePropertyExistenceConstraint(NodeLabelIndexCursor allNodes, NodeCursor nodeCursor, PropertyCursor propertyCursor, LabelSchemaDescriptor descriptor);
public static RelationshipSelectionCursor NodeGetRelationships(Read read, CursorFactory cursors, NodeCursor node, long nodeId, Direction direction)
{
return(NodeGetRelationships(read, cursors, node, nodeId, direction, null));
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public void validateNodeKeyConstraint(org.neo4j.internal.kernel.api.NodeLabelIndexCursor allNodes, org.neo4j.internal.kernel.api.NodeCursor nodeCursor, org.neo4j.internal.kernel.api.PropertyCursor propertyCursor, org.neo4j.internal.kernel.api.schema.LabelSchemaDescriptor descriptor) throws org.neo4j.internal.kernel.api.exceptions.schema.CreateConstraintFailureException
public override void ValidateNodeKeyConstraint(NodeLabelIndexCursor allNodes, NodeCursor nodeCursor, PropertyCursor propertyCursor, LabelSchemaDescriptor descriptor)
{
ValidateNodePropertyExistenceConstraint(allNodes, nodeCursor, propertyCursor, descriptor);
}
public override void Node(NodeCursor cursor)
{
_read.singleNode(_node, cursor);
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: void lockAllNodesAndConsumeRelationships(long nodeId, final org.neo4j.internal.kernel.api.Transaction transaction, org.neo4j.internal.kernel.api.NodeCursor nodes) throws org.neo4j.internal.kernel.api.exceptions.KernelException
//JAVA TO C# CONVERTER WARNING: 'final' parameters are ignored unless the option to convert to C# 7.2 'in' parameters is selected:
internal virtual void LockAllNodesAndConsumeRelationships(long nodeId, Transaction transaction, NodeCursor nodes)
{
bool retry;
do
{
retry = false;
_firstRelId = NO_SUCH_RELATIONSHIP;
// lock all the nodes involved by following the node id ordering
CollectAndSortNodeIds(nodeId, transaction, nodes);
LockAllNodes(_sortedNodeIds);
// perform the action on each relationship, we will retry if the the relationship iterator contains
// new relationships
[email protected] read = transaction.DataRead();
read.SingleNode(nodeId, nodes);
//if the node is not there, someone else probably deleted it, just ignore
if (nodes.Next())
{
using (RelationshipSelectionCursor rels = RelationshipSelections.allCursor(transaction.Cursors(), nodes, null))
{
bool first = true;
while (rels.Next() && !retry)
{
retry = PerformAction(rels.RelationshipReference(), first);
first = false;
}
}
}
} while (retry);
}
public override void Source(NodeCursor cursor)
{
Read.singleNode(SourceNodeReference(), cursor);
}
public override void Target(NodeCursor cursor)
{
Read.singleNode(TargetNodeReference(), cursor);
}
public static RelationshipSelectionCursor ConnectingRelationships(Read read, CursorFactory cursors, NodeCursor nodeCursor, long fromNode, Direction direction, long toNode, int[] relTypes)
{
//Check from
int fromDegree = CalculateTotalDegreeIfDense(read, fromNode, nodeCursor, direction, relTypes, cursors);
if (fromDegree == 0)
{
return(Org.Neo4j.@internal.Kernel.Api.helpers.RelationshipSelectionCursor_EMPTY);
}
bool fromNodeIsDense = fromDegree != NOT_DENSE_DEGREE;
//Check to
read.SingleNode(toNode, nodeCursor);
if (!nodeCursor.Next())
{
return(Org.Neo4j.@internal.Kernel.Api.helpers.RelationshipSelectionCursor_EMPTY);
}
bool toNodeIsDense = nodeCursor.Dense;
//Both are dense, start with the one with the lesser degree
if (fromNodeIsDense && toNodeIsDense)
{
//Note that we have already position the cursor at toNode
int toDegree = CalculateTotalDegree(nodeCursor, direction, relTypes, cursors);
long startNode;
long endNode;
Direction relDirection;
if (fromDegree < toDegree)
{
startNode = fromNode;
endNode = toNode;
relDirection = direction;
}
else
{
startNode = toNode;
endNode = fromNode;
relDirection = direction.reverse();
}
return(ConnectingRelationshipsIterator(CompiledCursorUtils.NodeGetRelationships(read, cursors, nodeCursor, startNode, relDirection, relTypes), endNode));
}
else if (fromNodeIsDense)
{
return(ConnectingRelationshipsIterator(CompiledCursorUtils.NodeGetRelationships(read, cursors, nodeCursor, toNode, direction.reverse(), relTypes), fromNode));
}
else
{ //either only toNode is dense or none of them, just go with what we got
return(ConnectingRelationshipsIterator(CompiledCursorUtils.NodeGetRelationships(read, cursors, nodeCursor, fromNode, direction, relTypes), toNode));
}
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public void validateNodePropertyExistenceConstraint(org.neo4j.internal.kernel.api.NodeLabelIndexCursor allNodes, org.neo4j.internal.kernel.api.NodeCursor nodeCursor, org.neo4j.internal.kernel.api.PropertyCursor propertyCursor, org.neo4j.internal.kernel.api.schema.LabelSchemaDescriptor descriptor) throws org.neo4j.internal.kernel.api.exceptions.schema.CreateConstraintFailureException
public override void ValidateNodePropertyExistenceConstraint(NodeLabelIndexCursor allNodes, NodeCursor nodeCursor, PropertyCursor propertyCursor, LabelSchemaDescriptor descriptor)
{
throw PropertyExistenceConstraintsNotAllowed(descriptor);
}
public static RelationshipSelectionCursor NodeGetRelationships(Read read, CursorFactory cursors, NodeCursor node, long nodeId, Direction direction, int[] types)
{
read.SingleNode(nodeId, node);
if (!node.Next())
{
return(Org.Neo4j.@internal.Kernel.Api.helpers.RelationshipSelectionCursor_EMPTY);
}
switch (direction.innerEnumValue)
{
case Direction.InnerEnum.OUTGOING:
return(RelationshipSelections.outgoingCursor(cursors, node, types));
case Direction.InnerEnum.INCOMING:
return(RelationshipSelections.incomingCursor(cursors, node, types));
case Direction.InnerEnum.BOTH:
return(RelationshipSelections.allCursor(cursors, node, types));
default:
throw new System.InvalidOperationException("Unknown direction " + direction);
}
}
internal CursorPropertyAccessor(NodeCursor nodeCursor, PropertyCursor propertyCursor, Read read)
{
this._nodeCursor = nodeCursor;
this._propertyCursor = propertyCursor;
this._read = read;
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public void validateNodePropertyExistenceConstraint(org.neo4j.internal.kernel.api.NodeLabelIndexCursor allNodes, org.neo4j.internal.kernel.api.NodeCursor nodeCursor, org.neo4j.internal.kernel.api.PropertyCursor propertyCursor, org.neo4j.internal.kernel.api.schema.LabelSchemaDescriptor descriptor) throws org.neo4j.internal.kernel.api.exceptions.schema.CreateConstraintFailureException
public override void ValidateNodePropertyExistenceConstraint(NodeLabelIndexCursor allNodes, NodeCursor nodeCursor, PropertyCursor propertyCursor, LabelSchemaDescriptor descriptor)
{
while (allNodes.Next())
{
allNodes.Node(nodeCursor);
while (nodeCursor.Next())
{
foreach (int propertyKey in descriptor.PropertyIds)
{
nodeCursor.Properties(propertyCursor);
if (!HasProperty(propertyCursor, propertyKey))
{
throw CreateConstraintFailure(new NodePropertyExistenceException(descriptor, VERIFICATION, nodeCursor.NodeReference()));
}
}
}
}
}
