//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public org.neo4j.storageengine.api.schema.IndexSample sampleIndex() throws org.neo4j.internal.kernel.api.exceptions.schema.IndexNotFoundKernelException
public override IndexSample SampleIndex()
{
NonUniqueIndexSampler sampler = new DefaultNonUniqueIndexSampler(_indexSamplingConfig.sampleSizeLimit());
IndexReader indexReader = _indexSearcher.IndexReader;
foreach (LeafReaderContext readerContext in indexReader.leaves())
{
try
{
ISet <string> fieldNames = GetFieldNamesToSample(readerContext);
foreach (string fieldName in fieldNames)
{
Terms terms = readerContext.reader().terms(fieldName);
if (terms != null)
{
TermsEnum termsEnum = LuceneDocumentStructure.originalTerms(terms, fieldName);
BytesRef termsRef;
while ((termsRef = termsEnum.next()) != null)
{
sampler.Include(termsRef.utf8ToString(), termsEnum.docFreq());
CheckCancellation();
}
}
}
}
catch (IOException e)
{
throw new Exception(e);
}
}
return(sampler.Result(indexReader.numDocs()));
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldSampleASingleValue()
public virtual void ShouldSampleASingleValue()
{
// given
NonUniqueIndexSampler sampler = new DefaultNonUniqueIndexSampler(10);
// when
sampler.Include(_value, 2);
// then
AssertSampledValues(sampler, 2, 1, 2);
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldSampleNothing()
public virtual void ShouldSampleNothing()
{
// given
NonUniqueIndexSampler sampler = new DefaultNonUniqueIndexSampler(10);
// when
// nothing has been sampled
// then
AssertSampledValues(sampler, 0, 0, 0);
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldDoNothingWhenExcludingAValueInAnEmptySample()
public virtual void ShouldDoNothingWhenExcludingAValueInAnEmptySample()
{
// given
NonUniqueIndexSampler sampler = new DefaultNonUniqueIndexSampler(10);
// when
sampler.Exclude(_value, 1);
sampler.Include(_value, 1);
// then
AssertSampledValues(sampler, 1, 1, 1);
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldSampleDuplicateValues()
public virtual void ShouldSampleDuplicateValues()
{
// given
NonUniqueIndexSampler sampler = new DefaultNonUniqueIndexSampler(10);
// when
sampler.Include(_value, 5);
sampler.Include(_value, 4);
sampler.Include("bbb", 3);
// then
AssertSampledValues(sampler, 12, 2, 12);
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldExcludeValuesFromTheCurrentSampling1()
public virtual void ShouldExcludeValuesFromTheCurrentSampling1()
{
// given
NonUniqueIndexSampler sampler = new DefaultNonUniqueIndexSampler(10);
sampler.Include(_value, 5);
sampler.Include(_value, 4);
sampler.Include("bbb", 3);
// when
sampler.Exclude(_value, 3);
// then
AssertSampledValues(sampler, 9, 2, 9);
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldDivideTheSamplingInStepsNotBiggerThanBatchSize()
public virtual void ShouldDivideTheSamplingInStepsNotBiggerThanBatchSize()
{
// given
NonUniqueIndexSampler sampler = new DefaultNonUniqueIndexSampler(1);
// when
sampler.Include(_value, 5);
sampler.Include(_value, 4);
sampler.Include("bbb", 3);
// then
int expectedSampledSize = 12 / 3;
AssertSampledValues(sampler, 12, 1, expectedSampledSize);
}
