public void CanCreateBasicLogRecord()
{
Assert.DoesNotThrow(() =>
{
var page = _fileManager.ResolvePage();
_logRecord = new BasicLogRecord(page, 0);
});
}
public SetIntRecord(BasicLogRecord rec)
{//通过一条不带语义的字节记录来创建一条带语义的日志记录
txnum = rec.nextInt();
string filename = rec.nextString();
int blknum = rec.nextInt();
blk = new Block(filename, blknum);
offset = rec.nextInt();
val = rec.nextInt();
}
public SetStringRecord(BasicLogRecord rec)
{
txnum = rec.nextInt();
string filename = rec.nextString();
int blknum = rec.nextInt();
blk = new Block(filename, blknum);
offset = rec.nextInt();
val = rec.nextString();
}
public void CannotGetWrongNextDate()
{
var page = _fileManager.ResolvePage();
page.SetDate(0, new DateTime(2020, 1, 1));
_logRecord = new BasicLogRecord(page, -1);
var canGetRecord = _logRecord.NextDate(out var value);
Assert.False(canGetRecord);
Assert.AreEqual(default(DateTime), value);
}
public void CannotGetWrongNextString()
{
var page = _fileManager.ResolvePage();
page.SetString(0, "123");
_logRecord = new BasicLogRecord(page, -1);
var canGetRecord = _logRecord.NextString(out var value);
Assert.False(canGetRecord);
Assert.AreEqual(default(string[]), value);
}
public void CannotGetWrongNextBlob()
{
var page = _fileManager.ResolvePage();
page.SetBlob(0, new byte[] { 1, 2, 3 });
_logRecord = new BasicLogRecord(page, -1);
var canGetRecord = _logRecord.NextBlob(out var value);
Assert.False(canGetRecord);
Assert.AreEqual(default(byte[]), value);
}
public void CanGetNextDate()
{
var page = _fileManager.ResolvePage();
_logRecord = new BasicLogRecord(page, 0);
page.SetDate(0, new DateTime(2020, 1, 1));
var canGetRecord = _logRecord.NextDate(out var value);
Assert.True(canGetRecord);
Assert.AreEqual(new DateTime(2020, 1, 1), value);
}
public void CanGetNextByte()
{
var page = _fileManager.ResolvePage();
_logRecord = new BasicLogRecord(page, 0);
page.SetByte(0, 123);
var canGetRecord = _logRecord.NextByte(out var value);
Assert.True(canGetRecord);
Assert.AreEqual(123, value);
}
public void CanGetNextBlob()
{
var page = _fileManager.ResolvePage();
_logRecord = new BasicLogRecord(page, 0);
page.SetBlob(0, new byte[] { 1, 2, 3 });
var canGetRecord = _logRecord.NextBlob(out var value);
Assert.True(canGetRecord);
Assert.AreEqual(new byte[] { 1, 2, 3 }, value);
}
public StartRecord(
ILogManager logManager,
IBufferManager bufferManager,
BasicLogRecord record,
bool needOffset = true)
: base(logManager, bufferManager, LogRecordType.Start)
{
if (needOffset)
{
_ = record.NextInt(out var _);
}
_ = record.NextInt(out _transactionNumber);
}
public void CanGetNextString()
{
var page = _fileManager.ResolvePage();
_logRecord = new BasicLogRecord(page, 0);
page.SetString(0, "123");
var canGetRecord = _logRecord.NextString(out var value);
Assert.True(canGetRecord);
Assert.AreEqual("123", value);
}
public void CannotGetWrongNextBool()
{
var page = _fileManager.ResolvePage();
page.SetBool(0, true);
_logRecord = new BasicLogRecord(page, -1);
var canGetRecord = _logRecord.NextBool(out var value);
Assert.False(canGetRecord);
Assert.AreEqual(default(bool), value);
}
public SetBlobRecord(
ILogManager logManager,
IBufferManager bufferManager,
BasicLogRecord record,
bool needOffset = true)
: base(logManager, bufferManager, LogRecordType.SetBlob)
{
if (needOffset)
{
_ = record.NextInt(out var _);
}
_ = record.NextInt(out _transactionNumber);
_ = record.NextString(out var filename);
_ = record.NextInt(out var blockNumber);
_block = new Block(filename, blockNumber);
_ = record.NextInt(out _offset);
_ = record.NextBlob(out _value);
}
public CheckpointRecord(
ILogManager logManager,
IBufferManager bufferManager,
BasicLogRecord record,
bool needOffset = true)
: base(logManager, bufferManager, LogRecordType.Checkpoint)
{
if (needOffset)
{
_ = record.NextInt(out var _);
}
_ = record.NextInt(out var length);
_transactionNumbers = new int[length];
for (int i = 0; i < length; ++i)
{
record.NextInt(out _transactionNumbers[i]);
}
}
public StartRecord(BasicLogRecord rec)
{
txnum = rec.nextInt();
}
public CheckpointRecord(BasicLogRecord rec)
{
}
public RollbackRecord(BasicLogRecord rec)
{
txnum = rec.nextInt();
}
public CommitRecord(BasicLogRecord rec)
{
txnum = rec.nextInt();
}
