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See:
Description
Class Summary | |
---|---|
BoolFunction | Abstract parent class for those ValueSource implementations which
apply boolean logic to their values |
ByteFieldSource | Obtains int field values from the FieldCache
using getInts()
and makes those values available as other numeric types, casting as needed. |
BytesRefFieldSource | An implementation for retrieving FunctionValues instances for string based fields. |
ConstNumberSource | ConstNumberSource is the base class for all constant numbers |
ConstValueSource | ConstValueSource returns a constant for all documents |
DefFunction | ValueSource implementation which only returns the values from the provided
ValueSources which are available for a particular docId. |
DivFloatFunction | Function to divide "a" by "b" |
DocFreqValueSource | DocFreqValueSource returns the number of documents containing the term. |
DoubleConstValueSource | Function that returns a constant double value for every document. |
DoubleFieldSource | Obtains float field values from the FieldCache
using getFloats()
and makes those values available as other numeric types, casting as needed. |
DualFloatFunction | Abstract ValueSource implementation which wraps two ValueSources
and applies an extendible float function to their values. |
FieldCacheSource | A base class for ValueSource implementations that retrieve values for
a single field from the FieldCache . |
FloatFieldSource | Obtains float field values from the FieldCache
using getFloats()
and makes those values available as other numeric types, casting as needed. |
IDFValueSource | Function that returns #idf(long, long)
for every document. |
IfFunction | Depending on the boolean value of the ifSource function,
returns the value of the trueSource or falseSource function. |
IntFieldSource | Obtains int field values from the FieldCache
using getInts()
and makes those values available as other numeric types, casting as needed. |
JoinDocFreqValueSource | Use a field value and find the Document Frequency within another field. |
LinearFloatFunction | LinearFloatFunction implements a linear function over
another ValueSource . |
LiteralValueSource | Pass a the field value through as a String, no matter the type // Q: doesn't this mean it's a "string"? |
LongFieldSource | Obtains float field values from the FieldCache
using getFloats()
and makes those values available as other numeric types, casting as needed. |
MaxDocValueSource | Returns the value of IndexReader.maxDoc()
for every document. |
MaxFloatFunction | MaxFloatFunction returns the max of it's components. |
MinFloatFunction | MinFloatFunction returns the min of it's components. |
MultiBoolFunction | Abstract ValueSource implementation which wraps multiple ValueSources
and applies an extendible boolean function to their values. |
MultiFloatFunction | Abstract ValueSource implementation which wraps multiple ValueSources
and applies an extendible float function to their values. |
MultiFunction | Abstract parent class for ValueSource implementations that wrap multiple
ValueSources and apply their own logic. |
MultiValueSource | A ValueSource that abstractly represents ValueSource s for
poly fields, and other things. |
NormValueSource | Function that returns TFIDFSimilarity.decodeNormValue(byte)
for every document. |
NumDocsValueSource | Returns the value of IndexReader.numDocs()
for every document. |
OrdFieldSource | Obtains the ordinal of the field value from the default Lucene FieldCache using getStringIndex(). |
PowFloatFunction | Function to raise the base "a" to the power "b" |
ProductFloatFunction | ProductFloatFunction returns the product of it's components. |
QueryValueSource | QueryValueSource returns the relevance score of the query |
RangeMapFloatFunction | LinearFloatFunction implements a linear function over
another ValueSource . |
ReciprocalFloatFunction | ReciprocalFloatFunction implements a reciprocal function f(x) = a/(mx+b), based on
the float value of a field or function as exported by ValueSource . |
ReverseOrdFieldSource | Obtains the ordinal of the field value from the default Lucene FieldCache using getTermsIndex()
and reverses the order. |
ScaleFloatFunction | Scales values to be between min and max. |
ShortFieldSource | Obtains short field values from the FieldCache
using getShorts()
and makes those values available as other numeric types, casting as needed. |
SimpleBoolFunction | BoolFunction implementation which applies an extendible boolean
function to the values of a single wrapped ValueSource . |
SimpleFloatFunction | A simple float function with a single argument |
SingleFunction | A function with a single argument |
SumFloatFunction | SumFloatFunction returns the sum of it's components. |
SumTotalTermFreqValueSource | SumTotalTermFreqValueSource returns the number of tokens. |
TermFreqValueSource | Function that returns DocsEnum.freq() for the
supplied term in every document. |
TFValueSource | Function that returns TFIDFSimilarity.tf(int)
for every document. |
TotalTermFreqValueSource | TotalTermFreqValueSource returns the total term freq
(sum of term freqs across all documents). |
VectorValueSource | Converts individual ValueSource instances to leverage the FunctionValues *Val functions that work with multiple values, i.e. |
A variety of functions to use with FunctionQuery.
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