public void Delete()
{
if (_positionBlock == null)
{
throw new InvalidOperationException();
}
_nativeOperator.Delete(_positionBlock);
}
public void _003_Insert_Update_Delete_Step()
{
var random = new Random(0);
var path = _temp.GetPath("003.mkd");
var createData = CreateDataFactory.CreateDefault();
_operator.Create(path, createData, true);
var firstRecord = new byte[100];
var secondRecord = new byte[100];
var updateFirstRecord = new byte[100];
var updateSecondRecord = new byte[100];
var readFirstRecord = new byte[100];
var readSecondRecord = new byte[100];
var temporaryBuffer = new byte[100];
random.NextBytes(firstRecord);
random.NextBytes(secondRecord);
random.NextBytes(updateFirstRecord);
random.NextBytes(updateSecondRecord);
firstRecord[0] = 0;
secondRecord[0] = 1;
Array.Copy(firstRecord, updateFirstRecord, 4);
Array.Copy(secondRecord, updateSecondRecord, 4);
var positionBlock = _operator.Open(path);
_operator.Insert(positionBlock, firstRecord);
_operator.Insert(positionBlock, secondRecord);
var statData = _operator.Stat(positionBlock);
Assert.Equal((uint)2, statData.FileSpec.RecordCount);
_operator.StepFirst(positionBlock, readFirstRecord);
_operator.StepNext(positionBlock, readSecondRecord);
Assert.Equal(firstRecord, readFirstRecord);
Assert.Equal(secondRecord, readSecondRecord);
try {
_operator.StepNext(positionBlock, temporaryBuffer);
} catch (OperationException e) {
Assert.Equal(9, e.StatusCode);
}
_operator.StepLast(positionBlock, readSecondRecord);
_operator.StepPrevious(positionBlock, readFirstRecord);
Assert.Equal(firstRecord, readFirstRecord);
Assert.Equal(secondRecord, readSecondRecord);
try {
_operator.StepPrevious(positionBlock, temporaryBuffer);
} catch (OperationException e) {
Assert.Equal(9, e.StatusCode);
}
_operator.StepFirst(positionBlock, temporaryBuffer);
_operator.Update(positionBlock, updateFirstRecord);
_operator.StepNext(positionBlock, temporaryBuffer);
_operator.Update(positionBlock, updateSecondRecord);
_operator.StepFirst(positionBlock, readFirstRecord);
_operator.StepNext(positionBlock, readSecondRecord);
Assert.Equal(updateFirstRecord, readFirstRecord);
Assert.Equal(updateSecondRecord, readSecondRecord);
_operator.StepFirst(positionBlock, temporaryBuffer);
_operator.Delete(positionBlock);
_operator.StepFirst(positionBlock, temporaryBuffer);
_operator.Delete(positionBlock);
try {
_operator.StepFirst(positionBlock, temporaryBuffer);
} catch (OperationException e) {
Assert.Equal(9, e.StatusCode);
}
_operator.Close(positionBlock);
}