private SessionHandler CreateSessionHandler()
{
SqlConnection connection;
var connectionIsExternal = false;
var transactionIsExternal = false;
var upgradeContext = UpgradeContext.GetCurrent(Domain.UpgradeContextCookie);
if (upgradeContext != null)
{
connection = upgradeContext.Services.Connection;
connectionIsExternal = true;
transactionIsExternal = true;
}
else if (Domain.SingleConnection != null)
{
connection = Domain.SingleConnection;
connectionIsExternal = true;
}
else
{
connection = Handlers.StorageDriver.CreateConnection(this);
}
return(new SqlSessionHandler(this, connection, connectionIsExternal, transactionIsExternal));
}
/// <summary>
/// Compiles the specified SQL DOM query.
/// </summary>
/// <param name="query">Query to compile.</param>
/// <returns>Compiled query.</returns>
public SqlCompilationResult CompileQuery(ISqlCompileUnit query)
{
ArgumentValidator.EnsureArgumentNotNull(query, "query");
var upgradeContext = UpgradeContext.GetCurrent(Session.Domain.UpgradeContextCookie);
if (upgradeContext != null)
{
return(driver.Compile(query, upgradeContext.NodeConfiguration));
}
return(driver.Compile(query, Session.StorageNode.Configuration));
}
private string Compile(ISqlCompileUnit statement)
{
if (session == null)
{
return(driver.Compile(statement).GetCommandText());
}
var upgradeContext = UpgradeContext.GetCurrent(session.Domain.UpgradeContextCookie);
if (upgradeContext != null)
{
return(driver.Compile(statement, upgradeContext.NodeConfiguration).GetCommandText());
}
return(driver.Compile(statement, session.StorageNode.Configuration).GetCommandText());
}
/// <inheritdoc/>
public Segment <long> NextBulk(SequenceInfo sequenceInfo, Session session)
{
var executionFromUpgrade = UpgradeContext.GetCurrent(session.Domain.UpgradeContextCookie) != null;
var query = GetSequenceQuery(sequenceInfo, session, executionFromUpgrade);
long hiValue = Execute(query, session);
if (executionFromUpgrade && !hasAISettingsInMemory)
{
CleanUp(Enumerable.Repeat(sequenceInfo, 1), session);
}
var increment = sequenceInfo.Increment;
var current = hasArbitaryIncrement ? hiValue - increment : (hiValue - 1) * increment;
return(new Segment <long>(current + 1, increment));
}
