public override T execute <T>(Command <T> command)
{
CommandContext context = null;
if (!alwaysOpenNew)
{
// check whether we can reuse the command context
CommandContext existingCommandContext = Context.CommandContext;
if (existingCommandContext != null && isFromSameEngine(existingCommandContext))
{
context = existingCommandContext;
}
}
bool openNew = (context == null);
CommandInvocationContext commandInvocationContext = new CommandInvocationContext(command);
Context.CommandInvocationContext = commandInvocationContext;
try
{
if (openNew)
{
LOG.debugOpeningNewCommandContext();
context = commandContextFactory.createCommandContext();
}
else
{
LOG.debugReusingExistingCommandContext();
}
Context.CommandContext = context;
Context.ProcessEngineConfiguration = processEngineConfiguration;
// delegate to next interceptor in chain
return(next.execute(command));
}
catch (Exception t)
{
commandInvocationContext.trySetThrowable(t);
}
finally
{
try
{
if (openNew)
{
LOG.closingCommandContext();
context.close(commandInvocationContext);
}
else
{
commandInvocationContext.rethrow();
}
}
finally
{
Context.removeCommandInvocationContext();
Context.removeCommandContext();
Context.removeProcessEngineConfiguration();
}
}
return(default(T));
}