Class SimpleBoolFunction
java.lang.Object
org.apache.lucene.queries.function.ValueSource
org.apache.lucene.queries.function.valuesource.BoolFunction
org.apache.lucene.queries.function.valuesource.SimpleBoolFunction
BoolFunction
implementation which applies an extendible boolean function to the values of
a single wrapped ValueSource
.
Functions this can be used for include whether a field has a value or not, or inverting the boolean value of the wrapped ValueSource.
-
Field Summary
-
Constructor Summary
-
Method Summary
Modifier and TypeMethodDescriptionvoid
createWeight
(Map<Object, Object> context, IndexSearcher searcher) Implementations should propagate createWeight to sub-ValueSources which can optionally store weight info in the context.description of field, used in explain()boolean
protected abstract boolean
func
(int doc, FunctionValues vals) getValues
(Map<Object, Object> context, LeafReaderContext readerContext) Gets the values for this reader and the context that was previously passed to createWeight().int
hashCode()
protected abstract String
name()
Methods inherited from class org.apache.lucene.queries.function.ValueSource
asDoubleValuesSource, asLongValuesSource, fromDoubleValuesSource, getSortField, newContext, toString
-
Field Details
-
source
-
-
Constructor Details
-
SimpleBoolFunction
-
-
Method Details
-
name
-
func
- Throws:
IOException
-
getValues
public BoolDocValues getValues(Map<Object, Object> context, LeafReaderContext readerContext) throws IOExceptionDescription copied from class:ValueSource
Gets the values for this reader and the context that was previously passed to createWeight(). The values must be consumed in a forward docID manner, and you must call this method again to iterate through the values again.- Specified by:
getValues
in classValueSource
- Throws:
IOException
-
description
Description copied from class:ValueSource
description of field, used in explain()- Specified by:
description
in classValueSource
-
hashCode
public int hashCode()- Specified by:
hashCode
in classValueSource
-
equals
- Specified by:
equals
in classValueSource
-
createWeight
Description copied from class:ValueSource
Implementations should propagate createWeight to sub-ValueSources which can optionally store weight info in the context. The context object will be passed to getValues() where this info can be retrieved.- Overrides:
createWeight
in classValueSource
- Throws:
IOException
-