本文整理汇总了C#中StorageEnvironment.NewTransaction方法的典型用法代码示例。如果您正苦于以下问题：C# StorageEnvironment.NewTransaction方法的具体用法？C# StorageEnvironment.NewTransaction怎么用？C# StorageEnvironment.NewTransaction使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类StorageEnvironment的用法示例。
在下文中一共展示了StorageEnvironment.NewTransaction方法的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: DataIsKeptAfterRestart
public void DataIsKeptAfterRestart()
{
using (var pureMemoryPager = StorageEnvironmentOptions.CreateMemoryOnly())
{
pureMemoryPager.OwnsPagers = false;
using (var env = new StorageEnvironment(pureMemoryPager))
{
using (var tx = env.NewTransaction(TransactionFlags.ReadWrite))
{
tx.Root.Add ("test/1", new MemoryStream());
tx.Commit();
}
using (var tx = env.NewTransaction(TransactionFlags.ReadWrite))
{
tx.Root.Add ("test/2", new MemoryStream());
tx.Commit();
}
}
using (var env = new StorageEnvironment(pureMemoryPager))
{
using (var tx = env.NewTransaction(TransactionFlags.Read))
{
Assert.NotNull(tx.Root.Read("test/1"));
Assert.NotNull(tx.Root.Read("test/2"));
tx.Commit();
}
}
}
}示例2: AllScratchPagesShouldBeReleased
public void AllScratchPagesShouldBeReleased()
{
var options = StorageEnvironmentOptions.CreateMemoryOnly();
options.ManualFlushing = true;
using (var env = new StorageEnvironment(options))
{
using (var txw = env.NewTransaction(TransactionFlags.ReadWrite))
{
env.CreateTree(txw, "test");
txw.Commit();
}
using (var txw = env.NewTransaction(TransactionFlags.ReadWrite))
{
var tree = txw.Environment.State.GetTree(txw, "test");
tree.Add("key/1", new MemoryStream(new byte[100]));
tree.Add("key/1", new MemoryStream(new byte[200]));
txw.Commit();
}
env.FlushLogToDataFile(); // non read nor write transactions, so it should flush and release everything from scratch
Assert.Equal(0, env.ScratchBufferPool.GetNumberOfAllocations(0));
}
}示例3: DataIsKeptAfterRestart_OnDisk
public void DataIsKeptAfterRestart_OnDisk()
{
if (Directory.Exists("test.data"))
Directory.Delete("test.data", true);
using (var pager = StorageEnvironmentOptions.ForPath("test.data"))
{
pager.OwnsPagers = false;
using (var env = new StorageEnvironment(pager))
{
using (var tx = env.NewTransaction(TransactionFlags.ReadWrite))
{
tx.State.Root.Add("test/1", new MemoryStream());
tx.Commit();
}
using (var tx = env.NewTransaction(TransactionFlags.ReadWrite))
{
tx.State.Root.Add("test/2", new MemoryStream());
tx.Commit();
}
}
using (var env = new StorageEnvironment(pager))
{
using (var tx = env.NewTransaction(TransactionFlags.Read))
{
Assert.NotNull(tx.State.Root.Read("test/1"));
Assert.NotNull(tx.State.Root.Read("test/2"));
tx.Commit();
}
}
}
}示例4: IterationShouldNotFindAnyRecordsAndShouldNotThrowWhenNumberOfEntriesOnPageIs1AndKeyDoesNotMatch
public void IterationShouldNotFindAnyRecordsAndShouldNotThrowWhenNumberOfEntriesOnPageIs1AndKeyDoesNotMatch()
{
using (var env = new StorageEnvironment(StorageEnvironmentOptions.CreateMemoryOnly()))
{
using (var tx = env.NewTransaction(TransactionFlags.ReadWrite))
{
env.CreateTree(tx, "tree");
tx.Commit();
}
using (var tx = env.NewTransaction(TransactionFlags.ReadWrite))
{
var tree = tx.ReadTree("tree");
tree.Add(@"Raven\Database\1", StreamFor("123"));
tx.Commit();
}
using (var snapshot = env.CreateSnapshot())
using (var iterator = snapshot.Iterate("tree"))
{
Assert.False(iterator.Seek(@"Raven\Filesystem\"));
}
}
}示例5: ShouldWork
public void ShouldWork()
{
using (var env = new StorageEnvironment(StorageEnvironmentOptions.CreateMemoryOnly()))
{
using (var tx = env.NewTransaction(TransactionFlags.ReadWrite))
{
var s = new string('0', 500);
var tree = env.CreateTree(tx, "data");
for (int i = 0; i < 10; i++)
{
tree.Add("users-" + i + "-" + s, new byte[0]);
}
tx.Commit();
}
using (var tx = env.NewTransaction(TransactionFlags.Read))
{
var tree = tx.State.GetTree(tx, "data");
using (var it = tree.Iterate())
{
Assert.True(it.Seek("users-7"));
for (int i = 0; i < 10; i++)
{
Assert.True(it.Seek("users-"+i),i.ToString());
}
}
}
}
}示例6: AllScratchPagesShouldBeReleased
public void AllScratchPagesShouldBeReleased()
{
var options = StorageEnvironmentOptions.CreateMemoryOnly();
options.ManualFlushing = true;
using (var env = new StorageEnvironment(options))
{
using (var txw = env.NewTransaction(TransactionFlags.ReadWrite))
{
env.CreateTree(txw, "test");
txw.Commit();
}
using (var txw = env.NewTransaction(TransactionFlags.ReadWrite))
{
var tree = txw.Environment.CreateTree(txw, "test");
tree.Add("key/1", new MemoryStream(new byte[100]));
tree.Add("key/1", new MemoryStream(new byte[200]));
txw.Commit();
}
env.FlushLogToDataFile(); // non read nor write transactions, so it should flush and release everything from scratch
// we keep track of the pages in scratch for one additional transaction, to avoid race
// condition with FlushLogToDataFile concurrently with new read transactions
Assert.Equal(2, env.ScratchBufferPool.GetNumberOfAllocations(0));
}
}示例7: ShouldNotThrowChecksumMismatch
public void ShouldNotThrowChecksumMismatch()
{
var random = new Random(1);
var buffer = new byte[100];
random.NextBytes(buffer);
for (int i = 0; i < 100; i++)
{
buffer[i] = 13;
}
var options = StorageEnvironmentOptions.ForPath(_dataPath);
using (var env = new StorageEnvironment(options))
{
using (var tx = env.NewTransaction(TransactionFlags.ReadWrite))
{
for (int i = 0; i < 50; i++)
{
tx.State.Root.Add("items/" + i, new MemoryStream(buffer));
}
tx.Commit();
}
using (var tx = env.NewTransaction(TransactionFlags.ReadWrite))
{
for (int i = 50; i < 100; i++)
{
tx.State.Root.Add("items/" + i, new MemoryStream(buffer));
}
tx.Commit();
}
}
options = StorageEnvironmentOptions.ForPath(_dataPath);
using (var env = new StorageEnvironment(options))
{
using (var tx = env.NewTransaction(TransactionFlags.Read))
{
for (int i = 0; i < 100; i++)
{
var readResult = tx.State.Root.Read("items/" + i);
Assert.NotNull(readResult);
var memoryStream = new MemoryStream();
readResult.Reader.CopyTo(memoryStream);
Assert.Equal(memoryStream.ToArray(), buffer);
}
}
}
}示例8: ShouldBeAbleToWriteValuesGreaterThanLogAndRecoverThem
public void ShouldBeAbleToWriteValuesGreaterThanLogAndRecoverThem()
{
DeleteDirectory("test2.data");
var random = new Random(1234);
var buffer = new byte[1024 * 512];
random.NextBytes(buffer);
var options = StorageEnvironmentOptions.ForPath("test2.data");
options.MaxLogFileSize = 10 * AbstractPager.PageSize;
using (var env = new StorageEnvironment(options))
{
using (var tx = env.NewTransaction(TransactionFlags.ReadWrite))
{
env.CreateTree(tx, "tree");
tx.Commit();
}
using (var tx = env.NewTransaction(TransactionFlags.ReadWrite))
{
tx.Environment.State.GetTree(tx,"tree").Add("key1", new MemoryStream(buffer));
tx.Commit();
}
}
options = StorageEnvironmentOptions.ForPath("test2.data");
options.MaxLogFileSize = 10 * AbstractPager.PageSize;
using (var env = new StorageEnvironment(options))
{
using (var tx = env.NewTransaction(TransactionFlags.ReadWrite))
{
env.CreateTree(tx, "tree");
tx.Commit();
}
using (var tx = env.NewTransaction(TransactionFlags.Read))
{
var read = tx.Environment.State.GetTree(tx,"tree").Read("key1");
Assert.NotNull(read);
{
Assert.Equal(buffer.Length, read.Reader.Length);
int used;
Assert.Equal(buffer, read.Reader.ReadBytes(read.Reader.Length, out used).Take(used).ToArray());
}
}
}
DeleteDirectory("test2.data");
}示例9: PageSplitterShouldCalculateSeparatorKeyCorrectly2
public void PageSplitterShouldCalculateSeparatorKeyCorrectly2()
{
var ids = ReadIds("data2.txt");
StorageEnvironmentOptions storageEnvironmentOptions = StorageEnvironmentOptions.CreateMemoryOnly();
storageEnvironmentOptions.MaxScratchBufferSize *=2;
using (var env = new StorageEnvironment(storageEnvironmentOptions))
{
var rand = new Random();
var testBuffer = new byte[69];
rand.NextBytes(testBuffer);
var trees = CreateTrees(env, 1, "tree");
foreach (var id in ids)
{
using (var tx = env.NewTransaction(TransactionFlags.ReadWrite))
{
foreach (var treeName in trees)
{
var tree = tx.Environment.CreateTree(tx, treeName);
tree.Add(id, new MemoryStream(testBuffer));
}
tx.Commit();
}
}
ValidateRecords(env, trees, ids);
}
}示例10: CanAddMultiValuesUnderTheSameKeyToBatch
public void CanAddMultiValuesUnderTheSameKeyToBatch()
{
using (var env = new StorageEnvironment(StorageEnvironmentOptions.CreateMemoryOnly()))
{
var rand = new Random();
var testBuffer = new byte[168];
rand.NextBytes(testBuffer);
CreateTrees(env, 1, "multitree");
var batch = new WriteBatch();
batch.MultiAdd("key", "value1", "multitree0");
batch.MultiAdd("key", "value2", "multitree0");
env.Writer.Write(batch);
using (var tx = env.NewTransaction(TransactionFlags.Read))
{
var tree = tx.Environment.CreateTree(tx,"multitree0");
using (var it = tree.MultiRead("key"))
{
Assert.True(it.Seek(Slice.BeforeAllKeys));
Assert.Equal("value1", it.CurrentKey.ToString());
Assert.True(it.MoveNext());
Assert.Equal("value2", it.CurrentKey.ToString());
}
}
}
}示例11: CanBackupAndRestore
public void CanBackupAndRestore()
{
RequireFileBasedPager();
var random = new Random();
var buffer = new byte[8192];
random.NextBytes(buffer);
using (var tx = Env.NewTransaction(TransactionFlags.ReadWrite))
{
for (int i = 0; i < 500; i++)
{
tx.State.Root.Add("items/" + i, new MemoryStream(buffer));
}
tx.Commit();
}
Assert.True(Env.Journal.Files.Count > 1);
Env.FlushLogToDataFile(); // force writing data to the data file
// add more data to journal files
using (var tx = Env.NewTransaction(TransactionFlags.ReadWrite))
{
for (int i = 500; i < 1000; i++)
{
tx.State.Root.Add("items/" + i, new MemoryStream(buffer));
}
tx.Commit();
}
Env.FlushLogToDataFile(); // force writing data to the data file - this won't sync data to disk because there was another sync withing last minute
BackupMethods.Full.ToFile(Env, _backupFile);
BackupMethods.Full.Restore(_backupFile, _recoveredStoragePath);
var options = StorageEnvironmentOptions.ForPath(_recoveredStoragePath);
options.MaxLogFileSize = Env.Options.MaxLogFileSize;
using (var env = new StorageEnvironment(options))
{
using (var tx = env.NewTransaction(TransactionFlags.Read))
{
for (int i = 0; i < 1000; i++)
{
var readResult = tx.State.Root.Read("items/" + i);
Assert.NotNull(readResult);
var memoryStream = new MemoryStream();
readResult.Reader.CopyTo(memoryStream);
Assert.Equal(memoryStream.ToArray(), buffer);
}
}
}
}示例12: StorageRecoveryShouldWorkWhenThereSingleTransactionToRecoverFromLog
public void StorageRecoveryShouldWorkWhenThereSingleTransactionToRecoverFromLog()
{
var path = "test2.data";
DeleteDirectory(path);
using (var env = new StorageEnvironment(StorageEnvironmentOptions.ForPath(path)))
{
using (var tx = env.NewTransaction(TransactionFlags.ReadWrite))
{
var tree = env.CreateTree(tx, "tree");
for (var i = 0; i < 100; i++)
{
tree.Add("key" + i, new MemoryStream());
}
tx.Commit();
}
}
using (var env = new StorageEnvironment(StorageEnvironmentOptions.ForPath(path)))
{
using (var tx = env.NewTransaction(TransactionFlags.ReadWrite))
{
env.CreateTree(tx, "tree");
tx.Commit();
}
using (var tx = env.NewTransaction(TransactionFlags.Read))
{
var tree = tx.Environment.State.GetTree(tx,"tree");
for (var i = 0; i < 100; i++)
{
Assert.NotNull(tree.Read("key" + i));
}
}
}
DeleteDirectory(path);
}示例13: MultipleTxPagesCanPointToOnePageNumberWhichShouldNotBeCausingIssuesDuringFlushing
public void MultipleTxPagesCanPointToOnePageNumberWhichShouldNotBeCausingIssuesDuringFlushing()
{
var options = StorageEnvironmentOptions.CreateMemoryOnly();
options.ManualFlushing = true;
using (var env = new StorageEnvironment(options))
{
var trees = CreateTrees(env, 2, "tree");
var tree1 = trees[0];
var tree2 = trees[1];
using (var tx = env.NewTransaction(TransactionFlags.ReadWrite))
{
var t1 = tx.State.GetTree(tx, tree1);
t1.MultiAdd("key", "value/1");
t1.MultiAdd("key", "value/2");
tx.Commit();
}
using (var tx = env.NewTransaction(TransactionFlags.ReadWrite))
{
var t1 = tx.State.GetTree(tx, tree1);
var t2 = tx.State.GetTree(tx, tree2);
var buffer = new byte[1000];
t1.MultiDelete("key", "value/1");
t1.MultiDelete("key", "value/2");
t2.Add("key/1", new MemoryStream(buffer));
t2.Add("key/2", new MemoryStream(buffer));
t2.Add("key/3", new MemoryStream(buffer));
t2.Add("key/4", new MemoryStream(buffer));
t2.Add("key/5", new MemoryStream(buffer));
tx.Commit();
}
env.FlushLogToDataFile();
}
}示例14: ReadTransactionCanReadJustCommittedValue
public void ReadTransactionCanReadJustCommittedValue()
{
var options = StorageEnvironmentOptions.CreateMemoryOnly();
options.ManualFlushing = true;
using (var env = new StorageEnvironment(options))
{
CreateTrees(env, 1, "tree");
using (var txw = env.NewTransaction(TransactionFlags.ReadWrite))
{
txw.Environment.CreateTree(txw, "tree0").Add("key/1", new MemoryStream());
txw.Commit();
using (var txr = env.NewTransaction(TransactionFlags.Read))
{
Assert.NotNull(txr.Environment.CreateTree(txr, "tree0").Read("key/1"));
}
}
}
}示例15: Can_make_multiple_min_inc_backups_and_then_restore
public void Can_make_multiple_min_inc_backups_and_then_restore()
{
const int UserCount = 5000;
_tempDir = Guid.NewGuid().ToString();
var storageEnvironmentOptions = StorageEnvironmentOptions.ForPath(_tempDir);
storageEnvironmentOptions.IncrementalBackupEnabled = true;
using (var envToSnapshot = new StorageEnvironment(storageEnvironmentOptions))
{
int index = 0;
for (int xi = 0; xi < 5; xi++)
{
for (int yi = 0; yi < 2; yi++)
{
using (var tx = envToSnapshot.NewTransaction(TransactionFlags.ReadWrite))
{
var tree = envToSnapshot.CreateTree(tx, "test");
for (int i = 0; i < UserCount / 10; i++)
{
tree.Add("users/" + index, "john doe/" + index);
index++;
}
tx.Commit();
}
}
var snapshotWriter = new MinimalIncrementalBackup();
snapshotWriter.ToFile(envToSnapshot, Path.Combine(_tempDir, xi + ".snapshot"));
}
}
var incremental = new IncrementalBackup();
var restoredOptions = StorageEnvironmentOptions.ForPath(Path.Combine(_tempDir, "restored"));
incremental.Restore(restoredOptions, Enumerable.Range(0, 5).Select(i => Path.Combine(_tempDir, i + ".snapshot")));
using (var snapshotRestoreEnv = new StorageEnvironment(restoredOptions))
{
using (var tx = snapshotRestoreEnv.NewTransaction(TransactionFlags.Read))
{
var tree = tx.ReadTree("test");
Assert.NotNull(tree);
for (int i = 0; i < UserCount; i++)
{
var readResult = tree.Read("users/" + i);
Assert.NotNull(readResult);
Assert.Equal("john doe/" + i, readResult.Reader.ToStringValue());
}
}
}
}