public override object GetProperty(string key, object defaultValue)
{
if (null == key)
{
throw new System.ArgumentException("(null) property key is not allowed");
}
KernelTransaction transaction = _spi.kernelTransaction();
RelationshipScanCursor relationships = transaction.AmbientRelationshipCursor();
PropertyCursor properties = transaction.AmbientPropertyCursor();
int propertyKey = transaction.TokenRead().propertyKey(key);
if (propertyKey == [email protected]_Fields.NO_TOKEN)
{
return(defaultValue);
}
SingleRelationship(transaction, relationships);
relationships.Properties(properties);
while (properties.Next())
{
if (propertyKey == properties.PropertyKey())
{
Value value = properties.PropertyValue();
return(value == Values.NO_VALUE ? defaultValue : value.AsObjectCopy());
}
}
return(defaultValue);
}
public override bool HasProperty(string key)
{
if (null == key)
{
return(false);
}
KernelTransaction transaction = _spi.kernelTransaction();
int propertyKey = transaction.TokenRead().propertyKey(key);
if (propertyKey == [email protected]_Fields.NO_TOKEN)
{
return(false);
}
RelationshipScanCursor relationships = transaction.AmbientRelationshipCursor();
PropertyCursor properties = transaction.AmbientPropertyCursor();
SingleRelationship(transaction, relationships);
relationships.Properties(properties);
while (properties.Next())
{
if (propertyKey == properties.PropertyKey())
{
return(true);
}
}
return(false);
}
private void ScanEverythingBelongingToRelationships(RelationshipMappings relMappings)
{
using (RelationshipScanCursor relationshipScanCursor = _cursors.allocateRelationshipScanCursor(), PropertyCursor propertyCursor = _cursors.allocatePropertyCursor())
{
_dataRead.allRelationshipsScan(relationshipScanCursor);
while (relationshipScanCursor.Next())
{
int typeId = relationshipScanCursor.Type();
relationshipScanCursor.Properties(propertyCursor);
MutableIntSet propertyIds = IntSets.mutable.empty();
while (propertyCursor.Next())
{
int propertyKey = propertyCursor.PropertyKey();
Value currentValue = propertyCursor.PropertyValue();
Pair <int, int> key = Pair.of(typeId, propertyKey);
UpdateValueTypeInMapping(currentValue, key, relMappings.RelationshipTypeIdANDPropertyTypeIdToValueType);
propertyIds.add(propertyKey);
}
propertyCursor.Close();
MutableIntSet oldPropertyKeySet = relMappings.RelationshipTypeIdToPropertyKeys.getOrDefault(typeId, _emptyPropertyIdSet);
// find out which old properties we did not visited and mark them as nullable
if (oldPropertyKeySet == _emptyPropertyIdSet)
{
if (propertyIds.size() == 0)
{
// Even if we find property key on other rels with this type, set all of them nullable
relMappings.NullableRelationshipTypes.Add(typeId);
}
propertyIds.addAll(oldPropertyKeySet);
}
else
{
MutableIntSet currentPropertyIdsHelperSet = new IntHashSet(propertyIds.size());
currentPropertyIdsHelperSet.addAll(propertyIds);
propertyIds.removeAll(oldPropertyKeySet); // only the brand new ones in propIds now
oldPropertyKeySet.removeAll(currentPropertyIdsHelperSet); // only the old ones that are not on the new rel
propertyIds.addAll(oldPropertyKeySet);
propertyIds.forEach(id =>
{
Pair <int, int> key = Pair.of(typeId, id);
relMappings.RelationshipTypeIdANDPropertyTypeIdToValueType[key].setNullable();
});
propertyIds.addAll(currentPropertyIdsHelperSet);
}
relMappings.RelationshipTypeIdToPropertyKeys[typeId] = propertyIds;
}
relationshipScanCursor.Close();
}
}
public override IDictionary <string, object> GetProperties(params string[] keys)
{
Objects.requireNonNull(keys, "Properties keys should be not null array.");
if (keys.Length == 0)
{
return(Collections.emptyMap());
}
KernelTransaction transaction = _spi.kernelTransaction();
int itemsToReturn = keys.Length;
TokenRead token = transaction.TokenRead();
//Find ids, note we are betting on that the number of keys
//is small enough not to use a set here.
int[] propertyIds = new int[itemsToReturn];
for (int i = 0; i < itemsToReturn; i++)
{
string key = keys[i];
if (string.ReferenceEquals(key, null))
{
throw new System.NullReferenceException(string.Format("Key {0:D} was null", i));
}
propertyIds[i] = token.PropertyKey(key);
}
IDictionary <string, object> properties = new Dictionary <string, object>(itemsToReturn);
RelationshipScanCursor relationships = transaction.AmbientRelationshipCursor();
PropertyCursor propertyCursor = transaction.AmbientPropertyCursor();
SingleRelationship(transaction, relationships);
relationships.Properties(propertyCursor);
int propertiesToFind = itemsToReturn;
while (propertiesToFind > 0 && propertyCursor.Next())
{
//Do a linear check if this is a property we are interested in.
int currentKey = propertyCursor.PropertyKey();
for (int i = 0; i < itemsToReturn; i++)
{
if (propertyIds[i] == currentKey)
{
properties[keys[i]] = propertyCursor.PropertyValue().asObjectCopy();
propertiesToFind--;
break;
}
}
}
return(properties);
}
internal virtual Value RelationshipGetProperty(Transaction transaction, long relationship, int property)
{
using (RelationshipScanCursor cursor = transaction.Cursors().allocateRelationshipScanCursor(), PropertyCursor properties = transaction.Cursors().allocatePropertyCursor())
{
transaction.DataRead().singleRelationship(relationship, cursor);
if (!cursor.Next())
{
return(NO_VALUE);
}
else
{
cursor.Properties(properties);
while (properties.Next())
{
if (properties.PropertyKey() == property)
{
return(properties.PropertyValue());
}
}
return(NO_VALUE);
}
}
}
