org.apache.lucene.queries.function.valuesource
Class MultiFloatFunction
java.lang.Object
org.apache.lucene.queries.function.ValueSource
org.apache.lucene.queries.function.valuesource.MultiFloatFunction
- Direct Known Subclasses:
- MaxFloatFunction, MinFloatFunction, ProductFloatFunction, SumFloatFunction
public abstract class MultiFloatFunction
- extends ValueSource
Abstract ValueSource
implementation which wraps multiple ValueSources
and applies an extendible float function to their values.
sources
protected final ValueSource[] sources
MultiFloatFunction
public MultiFloatFunction(ValueSource[] sources)
name
protected abstract String name()
func
protected abstract float func(int doc,
FunctionValues[] valsArr)
description
public String description()
- Description copied from class:
ValueSource
- description of field, used in explain()
- Specified by:
description
in class ValueSource
getValues
public FunctionValues getValues(Map context,
AtomicReaderContext readerContext)
throws IOException
- Description copied from class:
ValueSource
- Gets the values for this reader and the context that was previously
passed to createWeight()
- Specified by:
getValues
in class ValueSource
- Throws:
IOException
createWeight
public void createWeight(Map context,
IndexSearcher searcher)
throws IOException
- 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 class ValueSource
- Throws:
IOException
hashCode
public int hashCode()
- Specified by:
hashCode
in class ValueSource
equals
public boolean equals(Object o)
- Specified by:
equals
in class ValueSource
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