Package org.apache.solr.analytics.util

Class FacetRangeGenerator<T extends Comparable<T>>

java.lang.Object

org.apache.solr.analytics.util.FacetRangeGenerator<T>

public abstract class FacetRangeGenerator<T extends Comparable<T>>
extends Object

Calculates a set of FacetRangeGenerator.FacetRanges for a given RangeFacet.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	FacetRangeGenerator.FacetRange

Field Summary

Fields

Modifier and Type	Field	Description
protected SchemaField	field
protected RangeFacet	rangeFacet

Constructor Summary

Constructors

Constructor	Description
FacetRangeGenerator(RangeFacet rangeFacet)

Method Summary

Modifier and Type	Method	Description
T	addGap(T value, String gap)	Adds the String gap param to a low Range endpoint value to determine the corrisponding high Range endpoint value, throwing a useful exception if not possible.
static FacetRangeGenerator<? extends Comparable<?>>	create(RangeFacet rangeFacet)
String	formatValue(T val)	Formats a Range endpoint for use as a range label name in the response.
Object	getGap(String gap)	Parses a String param into a value that represents the gap and can be included in the response, throwing a useful exception if not possible.
List<FacetRangeGenerator.FacetRange>	getRanges()
T	getValue(String rawval)	Parses a String param into an Range endpoint value throwing a useful exception if not possible
protected abstract T	parseAndAddGap(T value, String gap)	Adds the String gap param to a low Range endpoint value to determine the corrisponding high Range endpoint value.
protected Object	parseGap(String rawval)	Parses a String param into a value that represents the gap and can be included in the response.
protected abstract T	parseVal(String rawval)	Parses a String param into an Range endpoint.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

field

protected final SchemaField field

rangeFacet

protected final RangeFacet rangeFacet

Constructor Detail

FacetRangeGenerator

public FacetRangeGenerator(RangeFacet rangeFacet)

Method Detail

formatValue

public String formatValue(T val)

Formats a Range endpoint for use as a range label name in the response. Default Impl just uses toString()

getValue

public final T getValue(String rawval)

Parses a String param into an Range endpoint value throwing a useful exception if not possible

parseVal

protected abstract T parseVal(String rawval)
                       throws ParseException

Parses a String param into an Range endpoint. Can throw a low level format exception as needed.

Throws:

ParseException

getGap

public final Object getGap(String gap)

Parses a String param into a value that represents the gap and can be included in the response, throwing a useful exception if not possible.

Note: uses Object as the return type instead of T for things like Date where gap is just a DateMathParser string

parseGap

protected Object parseGap(String rawval)
                   throws ParseException

Parses a String param into a value that represents the gap and can be included in the response. Can throw a low level format exception as needed.

Default Impl calls parseVal

Throws:

ParseException

addGap

public final T addGap(T value,
                      String gap)

Adds the String gap param to a low Range endpoint value to determine the corrisponding high Range endpoint value, throwing a useful exception if not possible.

parseAndAddGap

protected abstract T parseAndAddGap(T value,
                                    String gap)
                             throws ParseException

Adds the String gap param to a low Range endpoint value to determine the corrisponding high Range endpoint value. Can throw a low level format exception as needed.

Throws:

ParseException

getRanges

public List<FacetRangeGenerator.FacetRange> getRanges()

create

public static FacetRangeGenerator<? extends Comparable<?>> create(RangeFacet rangeFacet)