public virtual Filter GetFilter(XmlElement e)
{
string field = DOMUtils.GetAttributeWithInheritanceOrFail(e, "fieldName");
string lowerTerm = DOMUtils.GetAttributeOrFail(e, "lowerTerm");
string upperTerm = DOMUtils.GetAttributeOrFail(e, "upperTerm");
bool lowerInclusive = DOMUtils.GetAttribute(e, "includeLower", true);
bool upperInclusive = DOMUtils.GetAttribute(e, "includeUpper", true);
int precisionStep = DOMUtils.GetAttribute(e, "precisionStep", NumericUtils.PRECISION_STEP_DEFAULT);
string type = DOMUtils.GetAttribute(e, "type", "int");
try
{
Filter filter;
if (type.Equals("int", StringComparison.OrdinalIgnoreCase))
{
filter = NumericRangeFilter.NewIntRange(field, precisionStep, Convert.ToInt32(lowerTerm), Convert.ToInt32(upperTerm), lowerInclusive,
upperInclusive);
}
else if (type.Equals("long", StringComparison.OrdinalIgnoreCase))
{
filter = NumericRangeFilter.NewLongRange(field, precisionStep, Convert
.ToInt64(lowerTerm), Convert.ToInt64(upperTerm), lowerInclusive,
upperInclusive);
}
else if (type.Equals("double", StringComparison.OrdinalIgnoreCase))
{
filter = NumericRangeFilter.NewDoubleRange(field, precisionStep, Convert
.ToDouble(lowerTerm), Convert.ToDouble(upperTerm), lowerInclusive,
upperInclusive);
}
else if (type.Equals("float", StringComparison.OrdinalIgnoreCase))
{
filter = NumericRangeFilter.NewFloatRange(field, precisionStep, Convert
.ToSingle(lowerTerm), Convert.ToSingle(upperTerm), lowerInclusive,
upperInclusive);
}
else
{
throw new ParserException("type attribute must be one of: [long, int, double, float]");
}
return(filter);
}
catch (FormatException nfe)
{
if (strictMode)
{
throw new ParserException("Could not parse lowerTerm or upperTerm into a number", nfe);
}
return(NO_MATCH_FILTER);
}
}
/// <summary>
/// 通过类型来获取
/// </summary>
/// <param name="property"></param>
/// <param name="min"></param>
/// <param name="max"></param>
/// <returns></returns>
public static Filter GetNumberFilter(PropertyInfo property, double min, double max)
{
if (property.PropertyType == typeof(double) || property.PropertyType == typeof(decimal))
{
return(NumericRangeFilter.NewDoubleRange(property.Name, min, max, true, true));
}
else if (property.PropertyType == typeof(float))
{
return(NumericRangeFilter.NewFloatRange(property.Name, (float)min, (float)max, true, true));
}
else if (property.PropertyType == typeof(int))
{
return(NumericRangeFilter.NewIntRange(property.Name, (int)min, (int)max, true, true));
}
else
{
return(null);
}
}
/// <summary>
/// 分页获取商品信息数据
/// </summary>
/// <param name="queryString"></param>
/// <param name="pageIndex">第一页为1</param>
/// <param name="pageSize"></param>
/// <param name="totalCount"></param>
/// <returns></returns>
public List <Commodity> QueryIndexPage(string queryString, int pageIndex, int pageSize, out int totalCount, string priceFilter, string priceOrderBy)
{
totalCount = 0;
IndexSearcher searcher = null;
try
{
List <Commodity> ciList = new List <Commodity>();
FSDirectory dir = FSDirectory.Open(StaticConstant.IndexPath);
searcher = new IndexSearcher(dir);
Analyzer analyzer = new PanGuAnalyzer();
//--------------------------------------这里配置搜索条件
QueryParser parser = new QueryParser(Lucene.Net.Util.Version.LUCENE_30, "title", analyzer);
Query query = parser.Parse(queryString);
pageIndex = Math.Max(1, pageIndex);//索引从1开始
int startIndex = (pageIndex - 1) * pageSize;
int endIndex = pageIndex * pageSize;
NumericRangeFilter <float> numPriceFilter = null;
if (!string.IsNullOrWhiteSpace(priceFilter))
{
bool isContainStart = priceFilter.StartsWith("[");
bool isContainEnd = priceFilter.EndsWith("]");
string[] floatArray = priceFilter.Replace("[", "").Replace("]", "").Replace("{", "").Replace("}", "").Split(',');
float start = 0;
float end = 0;
if (!float.TryParse(floatArray[0], out start) || !float.TryParse(floatArray[1], out end))
{
throw new Exception("Wrong priceFilter");
}
numPriceFilter = NumericRangeFilter.NewFloatRange("price", start, end, isContainStart, isContainEnd);
}
Sort sort = new Sort();
if (!string.IsNullOrWhiteSpace(priceOrderBy))
{
SortField sortField = new SortField("price", SortField.FLOAT, priceOrderBy.EndsWith("asc", StringComparison.CurrentCultureIgnoreCase));
sort.SetSort(sortField);
}
TopDocs docs = searcher.Search(query, numPriceFilter, 10000, sort);
//TopDocs docs = searcher.Search(query, null, 10000);
totalCount = docs.TotalHits;
//PrintScores(docs, startIndex, endIndex, searcher);
for (int i = startIndex; i < endIndex && i < totalCount; i++)
{
Document doc = searcher.Doc(docs.ScoreDocs[i].Doc);
ciList.Add(DocumentToCommodityInfo(doc));
}
return(ciList);
}
finally
{
if (searcher != null)
{
searcher.Dispose();
}
}
}
public virtual void TestRandomFloats()
{
Directory dir = NewDirectory();
RandomIndexWriter w = new RandomIndexWriter(Random(), dir, Similarity, TimeZone);
int numDocs = AtLeast(1000);
float[] values = new float[numDocs];
float minValue = float.PositiveInfinity;
float maxValue = float.NegativeInfinity;
for (int i = 0; i < numDocs; i++)
{
Document doc = new Document();
float v = Random().NextFloat();
values[i] = v;
doc.Add(new FloatDocValuesField("field", v));
doc.Add(new FloatField("field", v, Field.Store.NO));
w.AddDocument(doc);
minValue = Math.Min(minValue, v);
maxValue = Math.Max(maxValue, v);
}
IndexReader r = w.Reader;
IndexSearcher s = NewSearcher(r);
FacetsConfig config = new FacetsConfig();
int numIters = AtLeast(10);
for (int iter = 0; iter < numIters; iter++)
{
if (VERBOSE)
{
Console.WriteLine("TEST: iter=" + iter);
}
int numRange = TestUtil.NextInt(Random(), 1, 5);
DoubleRange[] ranges = new DoubleRange[numRange];
int[] expectedCounts = new int[numRange];
float minAcceptedValue = float.PositiveInfinity;
float maxAcceptedValue = float.NegativeInfinity;
if (VERBOSE)
{
Console.WriteLine("TEST: " + numRange + " ranges");
}
for (int rangeID = 0; rangeID < numRange; rangeID++)
{
double min;
if (rangeID > 0 && Random().Next(10) == 7)
{
// Use an existing boundary:
DoubleRange prevRange = ranges[Random().Next(rangeID)];
if (Random().NextBoolean())
{
min = prevRange.Min;
}
else
{
min = prevRange.Max;
}
}
else
{
min = Random().NextDouble();
}
double max;
if (rangeID > 0 && Random().Next(10) == 7)
{
// Use an existing boundary:
DoubleRange prevRange = ranges[Random().Next(rangeID)];
if (Random().NextBoolean())
{
max = prevRange.Min;
}
else
{
max = prevRange.Max;
}
}
else
{
max = Random().NextDouble();
}
if (min > max)
{
double x = min;
min = max;
max = x;
}
// Must truncate to float precision so that the
// drill-down counts (which use NRQ.newFloatRange)
// are correct:
min = (float)min;
max = (float)max;
bool minIncl;
bool maxIncl;
if (min == max)
{
minIncl = true;
maxIncl = true;
}
else
{
minIncl = Random().NextBoolean();
maxIncl = Random().NextBoolean();
}
ranges[rangeID] = new DoubleRange("r" + rangeID, min, minIncl, max, maxIncl);
if (VERBOSE)
{
Console.WriteLine("TEST: range " + rangeID + ": " + ranges[rangeID]);
}
// Do "slow but hopefully correct" computation of
// expected count:
for (int i = 0; i < numDocs; i++)
{
bool accept = true;
if (minIncl)
{
accept &= values[i] >= min;
}
else
{
accept &= values[i] > min;
}
if (maxIncl)
{
accept &= values[i] <= max;
}
else
{
accept &= values[i] < max;
}
if (VERBOSE)
{
Console.WriteLine("TEST: check doc=" + i + " val=" + values[i] + " accept=" + accept);
}
if (accept)
{
expectedCounts[rangeID]++;
minAcceptedValue = Math.Min(minAcceptedValue, values[i]);
maxAcceptedValue = Math.Max(maxAcceptedValue, values[i]);
}
}
}
FacetsCollector sfc = new FacetsCollector();
s.Search(new MatchAllDocsQuery(), sfc);
Filter fastMatchFilter;
if (Random().NextBoolean())
{
if (Random().NextBoolean())
{
fastMatchFilter = NumericRangeFilter.NewFloatRange("field", minValue, maxValue, true, true);
}
else
{
fastMatchFilter = NumericRangeFilter.NewFloatRange("field", minAcceptedValue, maxAcceptedValue, true, true);
}
}
else
{
fastMatchFilter = null;
}
ValueSource vs = new FloatFieldSource("field");
Facets facets = new DoubleRangeFacetCounts("field", vs, sfc, fastMatchFilter, ranges);
FacetResult result = facets.GetTopChildren(10, "field");
Assert.AreEqual(numRange, result.LabelValues.Length);
for (int rangeID = 0; rangeID < numRange; rangeID++)
{
if (VERBOSE)
{
Console.WriteLine("TEST: verify range " + rangeID + " expectedCount=" + expectedCounts[rangeID]);
}
LabelAndValue subNode = result.LabelValues[rangeID];
Assert.AreEqual("r" + rangeID, subNode.label);
Assert.AreEqual(expectedCounts[rangeID], (int)subNode.value);
DoubleRange range = ranges[rangeID];
// Test drill-down:
DrillDownQuery ddq = new DrillDownQuery(config);
if (Random().NextBoolean())
{
if (Random().NextBoolean())
{
ddq.Add("field", NumericRangeFilter.NewFloatRange("field", (float)range.Min, (float)range.Max, range.MinInclusive, range.MaxInclusive));
}
else
{
ddq.Add("field", NumericRangeQuery.NewFloatRange("field", (float)range.Min, (float)range.Max, range.MinInclusive, range.MaxInclusive));
}
}
else
{
ddq.Add("field", range.GetFilter(fastMatchFilter, vs));
}
Assert.AreEqual(expectedCounts[rangeID], s.Search(ddq, 10).TotalHits);
}
}
IOUtils.Close(w, r, dir);
}