|
public static GetConfigurationAsync ( |
||
| rootUri | ||
| username | string | |
| password | string | |
| return | Task |
|
public virtual async Task ConnectAsync(NeoServerConfiguration configuration = null)
{
if (IsConnected)
{
return;
}
var stopwatch = Stopwatch.StartNew();
var operationCompletedArgs = new OperationCompletedEventArgs
{
QueryText = "Connect",
ResourcesReturned = 0
};
Action stopTimerAndNotifyCompleted = () =>
{
stopwatch.Stop();
operationCompletedArgs.TimeTaken = stopwatch.Elapsed;
OnOperationCompleted(operationCompletedArgs);
};
try
{
configuration = configuration ?? await NeoServerConfiguration.GetConfigurationAsync(
RootUri,
ExecutionConfiguration.Username,
ExecutionConfiguration.Password,
ExecutionConfiguration.Realm,
ExecutionConfiguration).ConfigureAwait(false);
RootApiResponse = configuration.ApiConfig;
if (!string.IsNullOrWhiteSpace(RootApiResponse.Transaction))
{
// transactionManager = new TransactionManager(this);
}
rootNode = string.IsNullOrEmpty(RootApiResponse.ReferenceNode)
? null
: new RootNode(long.Parse(GetLastPathSegment(RootApiResponse.ReferenceNode)), this);
// http://blog.neo4j.org/2012/04/streaming-rest-api-interview-with.html
ExecutionConfiguration.UseJsonStreaming = ExecutionConfiguration.UseJsonStreaming &&
RootApiResponse.Version >= new Version(1, 8);
if (RootApiResponse.Version < new Version(2, 0))
{
cypherCapabilities = CypherCapabilities.Cypher19;
}
if (RootApiResponse.Version >= new Version(2, 2))
{
cypherCapabilities = CypherCapabilities.Cypher22;
}
if (RootApiResponse.Version >= new Version(2, 2, 6))
{
cypherCapabilities = CypherCapabilities.Cypher226;
}
if (RootApiResponse.Version >= new Version(2, 3))
{
cypherCapabilities = CypherCapabilities.Cypher23;
}
if (RootApiResponse.Version >= new Version(3, 0))
{
cypherCapabilities = CypherCapabilities.Cypher30;
}
}
catch (AggregateException ex)
{
Exception unwrappedException;
var wasUnwrapped = ex.TryUnwrap(out unwrappedException);
operationCompletedArgs.Exception = wasUnwrapped ? unwrappedException : ex;
stopTimerAndNotifyCompleted();
if (wasUnwrapped)
{
throw unwrappedException;
}
throw;
}
catch (Exception e)
{
operationCompletedArgs.Exception = e;
stopTimerAndNotifyCompleted();
throw;
}
stopTimerAndNotifyCompleted();
}
public virtual async Task ConnectAsync(NeoServerConfiguration configuration = null)
{
if (IsConnected)
{
return;
}
var stopwatch = Stopwatch.StartNew();
var operationCompletedArgs = new OperationCompletedEventArgs
{
QueryText = "Connect",
ResourcesReturned = 0
};
void StopTimerAndNotifyCompleted()
{
stopwatch.Stop();
operationCompletedArgs.TimeTaken = stopwatch.Elapsed;
OnOperationCompleted(operationCompletedArgs);
}
try
{
configuration = configuration ?? await NeoServerConfiguration.GetConfigurationAsync(
RootUri,
ExecutionConfiguration.Username,
ExecutionConfiguration.Password,
ExecutionConfiguration.Realm,
ExecutionConfiguration.EncryptionLevel,
ExecutionConfiguration).ConfigureAwait(false);
RootApiResponse = configuration.ApiConfig;
if (!string.IsNullOrWhiteSpace(RootApiResponse.Transaction))
{
transactionManager = new TransactionManager(this);
}
// http://blog.neo4j.org/2012/04/streaming-rest-api-interview-with.html
ExecutionConfiguration.UseJsonStreaming = ExecutionConfiguration.UseJsonStreaming &&
RootApiResponse.Version >= new Version(1, 8);
var version = RootApiResponse.Version;
if (version < new Version(2, 0))
{
CypherCapabilities = CypherCapabilities.Cypher19;
}
if (version >= new Version(2, 2))
{
CypherCapabilities = CypherCapabilities.Cypher22;
}
if (version >= new Version(2, 2, 6))
{
CypherCapabilities = CypherCapabilities.Cypher226;
}
if (version >= new Version(2, 3))
{
CypherCapabilities = CypherCapabilities.Cypher23;
}
if (version >= new Version(3, 0))
{
CypherCapabilities = CypherCapabilities.Cypher30;
}
if (version >= new Version(4, 0))
{
CypherCapabilities = CypherCapabilities.Cypher40;
}
if (ServerVersion >= new Version(4, 4))
{
CypherCapabilities = CypherCapabilities.Cypher44;
}
}
catch (AggregateException ex)
{
var wasUnwrapped = ex.TryUnwrap(out var unwrappedException);
operationCompletedArgs.Exception = wasUnwrapped ? unwrappedException : ex;
StopTimerAndNotifyCompleted();
if (wasUnwrapped)
{
throw unwrappedException;
}
throw;
}
catch (Exception e)
{
operationCompletedArgs.Exception = e;
StopTimerAndNotifyCompleted();
throw;
}
StopTimerAndNotifyCompleted();
}