public void parses_the_field()
{
var settings = new SchemaMetadataSettings
{
Path = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Clarify", "Metadata", SchemaMetadataSettings.FileName)
};
var visitors = new List <IXElementVisitor> {
new ParseTables(), new ParseFields()
};
var service = new XElementService(visitors);
var services = new InMemoryServiceLocator();
services.Add <IXElementService>(service);
services.Add <IXElementSerializer>(new XElementSerializer());
var cache = new SchemaMetadataCache(settings, new NulloLogger(), service, services);
// Other tables shouldn't exist but will never be null
cache.MetadataFor("test").ShouldNotBeNull();
var table = cache.MetadataFor("case");
// Other fields shouldn't exist but will also never be null
table.MetadataFor("test").ShouldNotBeNull();
var field = table.MetadataFor("creation_time");
field.IsDateOnlyField().ShouldBeTrue();
}
public SchemaMetadataCache(SchemaMetadataSettings settings, ILogger logger, IXElementService elements, IServiceLocator services)
{
_settings = settings;
_logger = logger;
_elements = elements;
_services = services;
_metadata = new Lazy <List <TableSchemaMetadata> >(parseMetadata);
_lock = new object();
}
public void race_condition()
{
var settings = new SchemaMetadataSettings
{
Path = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Clarify", "Metadata", SchemaMetadataSettings.FileName)
};
var visitors = new List <IXElementVisitor> {
new ParseTables(), new ParseFields()
};
var service = new XElementService(visitors);
var services = new InMemoryServiceLocator();
services.Add <IXElementService>(service);
services.Add <IXElementSerializer>(new XElementSerializer());
var cache = new SchemaMetadataCache(settings, new NulloLogger(), service, services);
// Other tables shouldn't exist but will never be null
cache.MetadataFor("test").ShouldNotBeNull();
const string targetTable = "TEST_TABLE";
var actions = new List <Action>();
var cleanups = new List <Action>();
for (var i = 0; i < 500; i++)
{
var thread = new Thread(() =>
{
cache.MetadataFor("case1");
cache.MetadataFor("case1");
cache.MetadataFor(targetTable);
cache.MetadataFor(targetTable);
cache.MetadataFor(targetTable);
cache.MetadataFor(targetTable);
});
actions.Add(() =>
{
Thread.Sleep(50);
thread.Start();
});
cleanups.Add(() => thread.Join());
}
Parallel.Invoke(actions.ToArray());
cleanups.Each(callback => callback());
cache.MetadataFor(targetTable).ShouldNotBeNull();
}
