/// <summary>test none codecs</summary>
/// <exception cref="System.IO.IOException"/>
internal virtual void BasicWithSomeCodec(string codec)
{
Path ncTFile = new Path(Root, "basic.tfile");
FSDataOutputStream fout = CreateFSOutput(ncTFile);
TFile.Writer writer = new TFile.Writer(fout, minBlockSize, codec, "memcmp", conf);
WriteRecords(writer);
fout.Close();
FSDataInputStream fin = fs.Open(ncTFile);
TFile.Reader reader = new TFile.Reader(fs.Open(ncTFile), fs.GetFileStatus(ncTFile
).GetLen(), conf);
TFile.Reader.Scanner scanner = reader.CreateScanner();
ReadAllRecords(scanner);
scanner.SeekTo(GetSomeKey(50));
Assert.True("location lookup failed", scanner.SeekTo(GetSomeKey
(50)));
// read the key and see if it matches
byte[] readKey = ReadKey(scanner);
Assert.True("seeked key does not match", Arrays.Equals(GetSomeKey
(50), readKey));
scanner.SeekTo(new byte[0]);
byte[] val1 = ReadValue(scanner);
scanner.SeekTo(new byte[0]);
byte[] val2 = ReadValue(scanner);
Assert.True(Arrays.Equals(val1, val2));
// check for lowerBound
scanner.LowerBound(GetSomeKey(50));
Assert.True("locaton lookup failed", scanner.currentLocation.CompareTo
(reader.End()) < 0);
readKey = ReadKey(scanner);
Assert.True("seeked key does not match", Arrays.Equals(readKey,
GetSomeKey(50)));
// check for upper bound
scanner.UpperBound(GetSomeKey(50));
Assert.True("location lookup failed", scanner.currentLocation.CompareTo
(reader.End()) < 0);
readKey = ReadKey(scanner);
Assert.True("seeked key does not match", Arrays.Equals(readKey,
GetSomeKey(51)));
scanner.Close();
// test for a range of scanner
scanner = reader.CreateScannerByKey(GetSomeKey(10), GetSomeKey(60));
ReadAndCheckbytes(scanner, 10, 50);
NUnit.Framework.Assert.IsFalse(scanner.Advance());
scanner.Close();
reader.Close();
fin.Close();
fs.Delete(ncTFile, true);
}
/// <exception cref="System.IO.IOException"/>
internal virtual TFile.Reader.Location Locate(TFile.Reader.Scanner scanner, byte[]
key)
{
if (scanner.SeekTo(key) == true)
{
return(scanner.currentLocation);
}
return(scanner.endLocation);
}
/// <exception cref="System.IO.IOException"/>
public virtual void TestFailureSeek()
{
TFile.Reader reader = new TFile.Reader(fs.Open(path), fs.GetFileStatus(path).GetLen
(), conf);
TFile.Reader.Scanner scanner = reader.CreateScanner();
try
{
// can't find ceil
try
{
scanner.LowerBound(Runtime.GetBytesForString("keyN"));
NUnit.Framework.Assert.Fail("Cannot search in a unsorted TFile!");
}
catch (Exception)
{
}
finally
{
}
// noop, expecting excetions
// can't find higher
try
{
scanner.UpperBound(Runtime.GetBytesForString("keyA"));
NUnit.Framework.Assert.Fail("Cannot search higher in a unsorted TFile!");
}
catch (Exception)
{
}
finally
{
}
// noop, expecting excetions
// can't seek
try
{
scanner.SeekTo(Runtime.GetBytesForString("keyM"));
NUnit.Framework.Assert.Fail("Cannot search a unsorted TFile!");
}
catch (Exception)
{
}
finally
{
}
}
finally
{
// noop, expecting excetions
scanner.Close();
reader.Close();
}
}
/// <exception cref="System.IO.IOException"/>
private void CheckBlockIndex(int recordIndex, int blockIndexExpected)
{
TFile.Reader reader = new TFile.Reader(fs.Open(path), fs.GetFileStatus(path).GetLen
(), conf);
TFile.Reader.Scanner scanner = reader.CreateScanner();
scanner.SeekTo(Runtime.GetBytesForString(ComposeSortedKey(Key, recordIndex
)));
Assert.Equal(blockIndexExpected, scanner.currentLocation.GetBlockIndex
());
scanner.Close();
reader.Close();
}
public virtual void TestFailureNegativeLength_3()
{
if (skip)
{
return;
}
WriteRecords(3);
TFile.Reader reader = new TFile.Reader(fs.Open(path), fs.GetFileStatus(path).GetLen
(), conf);
TFile.Reader.Scanner scanner = reader.CreateScanner();
try
{
// test negative array offset
try
{
scanner.SeekTo(Runtime.GetBytesForString("keyY"), -1, 4);
NUnit.Framework.Assert.Fail("Failed to handle negative offset.");
}
catch (Exception)
{
}
// noop, expecting exceptions
// test negative array length
try
{
scanner.SeekTo(Runtime.GetBytesForString("keyY"), 0, -2);
NUnit.Framework.Assert.Fail("Failed to handle negative key length.");
}
catch (Exception)
{
}
}
finally
{
// noop, expecting exceptions
reader.Close();
scanner.Close();
}
}