public override IList <LookupResult> DoLookup(string key, IEnumerable <BytesRef> contexts, bool higherWeightsFirst, int num)
{
if (contexts != null)
{
throw new ArgumentException("this suggester doesn't support contexts");
}
IList <FSTCompletion.Completion> completions;
if (higherWeightsFirst)
{
completions = higherWeightsCompletion.DoLookup(key, num);
}
else
{
completions = normalCompletion.DoLookup(key, num);
}
List <LookupResult> results = new List <LookupResult>(completions.Count);
CharsRef spare = new CharsRef();
foreach (FSTCompletion.Completion c in completions)
{
spare.Grow(c.Utf8.Length);
UnicodeUtil.UTF8toUTF16(c.Utf8, spare);
results.Add(new LookupResult(spare.ToString(), c.Bucket));
}
return(results);
}
public void TestThreeByte()
{
//string key = new string(new sbyte[] {
// (sbyte) 0xF0, (sbyte) 0xA4, (sbyte) 0xAD, (sbyte) 0xA2}, 0, 4, Encoding.UTF8);
string key = Encoding.UTF8.GetString(new byte[] { 0xF0, 0xA4, 0xAD, 0xA2 });
FSTCompletionBuilder builder = new FSTCompletionBuilder();
builder.Add(new BytesRef(key), 0);
FSTCompletion lookup = builder.Build();
IEnumerable <FSTCompletion.Completion> result = lookup.DoLookup(StringToCharSequence(key).ToString(), 1);
assertEquals(1, result.Count());
}
public void TestRequestedCount()
{
// 'one' is promoted after collecting two higher ranking results.
AssertMatchEquals(completion.DoLookup(StringToCharSequence("one").ToString(), 2),
"one/0.0",
"oneness/1.0");
// 'four' is collected in a bucket and then again as an exact match.
AssertMatchEquals(completion.DoLookup(StringToCharSequence("four").ToString(), 2),
"four/0.0",
"fourblah/1.0");
// Check reordering of exact matches.
AssertMatchEquals(completion.DoLookup(StringToCharSequence("four").ToString(), 4),
"four/0.0",
"fourblah/1.0",
"fourteen/1.0",
"fourier/0.0");
// 'one' is at the top after collecting all alphabetical results.
AssertMatchEquals(completionAlphabetical.DoLookup(StringToCharSequence("one").ToString(), 2),
"one/0.0",
"oneness/1.0");
// 'one' is not promoted after collecting two higher ranking results.
FSTCompletion noPromotion = new FSTCompletion(completion.FST, true, false);
AssertMatchEquals(noPromotion.DoLookup(StringToCharSequence("one").ToString(), 2),
"oneness/1.0",
"onerous/1.0");
// 'one' is at the top after collecting all alphabetical results.
AssertMatchEquals(completionAlphabetical.DoLookup(StringToCharSequence("one").ToString(), 2),
"one/0.0",
"oneness/1.0");
}
public void TestExactMatchHighPriority()
{
AssertMatchEquals(completion.DoLookup(StringToCharSequence("two").ToString(), 1),
"two/1.0");
}
public void TestEmptyInput()
{
completion = new FSTCompletionBuilder().Build();
AssertMatchEquals(completion.DoLookup(StringToCharSequence("").ToString(), 10));
}
