public void Truncate()
{
if (!IsFragmented) return;
_mode = MaintenanceMode.Lockdown;
_lock.EnterExclusive();
try
{
using (var memoryStore = new MemoryBinaryStore())
{
var entries = _fragment.TableOfContent.Entries;
var memoryEntries = new List<Entry>();
foreach (var entry in entries)
{
var content = _service.GetContent(entry);
long storeOffset;
if (!memoryStore.TryWrite(content, out storeOffset))
throw new MaintenanceException("Failed to write data block to memory store, " + entry.Key.ToString());
memoryEntries.Add(new Entry
{
Key = entry.Key,
ValueLength = content.Length,
ValueOffset = storeOffset + 16
});
}
byte[] tableOfContent;
using (var stream = new MemoryStream())
{
var converter = new EntryBinaryConverter();
foreach (var entry in memoryEntries)
converter.ConvertTo(entry, stream);
tableOfContent = stream.ToArray();
}
var data = memoryStore.ToArray();
_service.ApplyTruncatedData(tableOfContent, data);
}
}
finally
{
_mode = MaintenanceMode.Normal;
_lock.ExitExclusive();
}
}
public void AddEntityTest()
{
var context = CreateTarget();
var car = new Car {
RegistrationNumber = "AAA000",
Nationality = Nationality.Sweden
};
context.Index.Storage.Add(new StringKey(car.RegistrationNumber), car);
context.Index.CommitModifications();
var actual = context.Index.Match(CompareOperation.Equal, (int)Nationality.Sweden).ToList();
Assert.AreEqual(1, actual.Count);
Assert.AreEqual(new StringKey(car.RegistrationNumber), actual.First());
var store = new MemoryBinaryStore(context.Store.ToArray());
context = CreateTarget(store);
actual = context.Index.Match(CompareOperation.Equal, (int)Nationality.Sweden).ToList();
Assert.AreEqual(1, actual.Count);
Assert.AreEqual(new StringKey(car.RegistrationNumber), actual.First());
}
private TestContext CreateTarget()
{
var store = new MemoryBinaryStore();
return CreateTarget(store);
}
private TestContext CreateTarget(MemoryBinaryStore store)
{
var configuration = new IndexConfiguration {
EntityType = typeof (Car),
Type = typeof (int),
UniqueName = "Nationality"
};
var storage = new IndexStorage<int>(store, configuration);
storage.Initialize();
var index = new TableIndex<int>(storage, new ComparableIndexAlgorithm<int>());
return new TestContext {Store = store, Index = index};
}