org.apache.solr.search.function
Class MaxFloatFunction

java.lang.Object
  extended by org.apache.solr.search.function.ValueSource
      extended by org.apache.solr.search.function.MaxFloatFunction
All Implemented Interfaces:
Serializable

public class MaxFloatFunction
extends ValueSource

Returns the max of a ValueSource and a float (which is useful for "bottoming out" another function at 0.0, or some positive number).
Normally Used as an argument to a FunctionQuery

Version:
$Id: MaxFloatFunction.java 816202 2009-09-17 14:08:13Z yonik $
See Also:
Serialized Form

Field Summary
protected  float fval
           
protected  ValueSource source
           
 
Constructor Summary
MaxFloatFunction(ValueSource source, float fval)
           
 
Method Summary
 void createWeight(Map context, Searcher 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()
 boolean equals(Object o)
           
 DocValues getValues(Map context, IndexReader reader)
          Gets the values for this reader and the context that was previously passed to createWeight()
 int hashCode()
           
 
Methods inherited from class org.apache.solr.search.function.ValueSource
getValues, newContext, toString
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 

Field Detail

source

protected final ValueSource source

fval

protected final float fval
Constructor Detail

MaxFloatFunction

public MaxFloatFunction(ValueSource source,
                        float fval)
Method Detail

description

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

Specified by:
description in class ValueSource

getValues

public DocValues getValues(Map context,
                           IndexReader reader)
                    throws IOException
Description copied from class: ValueSource
Gets the values for this reader and the context that was previously passed to createWeight()

Overrides:
getValues in class ValueSource
Throws:
IOException

createWeight

public void createWeight(Map context,
                         Searcher 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


Copyright © 2009 Apache Software Foundation. All Rights Reserved.