org.apache.lucene.queries.function.valuesource
Class VectorValueSource

java.lang.Object
  extended by org.apache.lucene.queries.function.ValueSource
      extended by org.apache.lucene.queries.function.valuesource.MultiValueSource
          extended by org.apache.lucene.queries.function.valuesource.VectorValueSource

public class VectorValueSource
extends MultiValueSource

Converts individual ValueSource instances to leverage the FunctionValues *Val functions that work with multiple values, i.e. FunctionValues.doubleVal(int, double[])


Field Summary
protected  List<ValueSource> sources
           
 
Constructor Summary
VectorValueSource(List<ValueSource> sources)
           
 
Method Summary
 void createWeight(Map context, IndexSearcher searcher)
          Implementations should propagate createWeight to sub-ValueSources which can optionally store weight info in the context.
 String description()
          description of field, used in explain()
 int dimension()
           
 boolean equals(Object o)
           
 List<ValueSource> getSources()
           
 FunctionValues getValues(Map context, AtomicReaderContext readerContext)
          Gets the values for this reader and the context that was previously passed to createWeight()
 int hashCode()
           
 String name()
           
 
Methods inherited from class org.apache.lucene.queries.function.ValueSource
getSortField, newContext, toString
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 

Field Detail

sources

protected final List<ValueSource> sources
Constructor Detail

VectorValueSource

public VectorValueSource(List<ValueSource> sources)
Method Detail

getSources

public List<ValueSource> getSources()

dimension

public int dimension()
Specified by:
dimension in class MultiValueSource

name

public String name()

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

description

public String description()
Description copied from class: ValueSource
description of field, used in explain()

Specified by:
description in class ValueSource

equals

public boolean equals(Object o)
Specified by:
equals in class ValueSource

hashCode

public int hashCode()
Specified by:
hashCode in class ValueSource


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