com.hammurapi.extract

Class Constant<T,V,C>

java.lang.Object

com.hammurapi.extract.ExtractorBase<T,V,C>

com.hammurapi.extract.Constant<T,V,C>

Type Parameters:

V -

C -

All Implemented Interfaces:

Extractor<T,V,C>

public class Constant<T,V,C>
extends ExtractorBase<T,V,C>

Constants don't extract any data from sources, but may extract data from context.

Field Summary

Fields inherited from class com.hammurapi.extract.ExtractorBase

cost, costUnit, initialCost, invocations, nanos, totalCost

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Constant()
	Constant(V value)

Method Summary

Methods

Modifier and Type	Method and Description
ComparisonResult	compareTo(Extractor<T,V,C> other) Basic comparisons with True and False.
boolean	equals(Object obj)
protected V	extractInternal(C context, Map<C,Map<Extractor<T,? super V,C>,? super V>> cache, T... obj)
V	getValue()
int	hashCode()
boolean	isContextDependent()
Set<Integer>	parameterIndices()
String	toString()

Methods inherited from class com.hammurapi.extract.ExtractorBase

createCacheEntry, extract, getCost

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Constant

protected Constant()

Constant

public Constant(V value)

Method Detail

getValue

public V getValue()

extractInternal

protected V extractInternal(C context,
                Map<C,Map<Extractor<T,? super V,C>,? super V>> cache,
                T... obj)

Specified by:

extractInternal in class ExtractorBase<T,V,C>

parameterIndices

public Set<Integer> parameterIndices()

Returns:

Indexes of objects which this extractor uses for computations.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class ExtractorBase<T,V,C>

isContextDependent

public boolean isContextDependent()

Returns:

True if extractor uses context for extraction. False if only object(s) are used.

toString

public String toString()

Overrides:

toString in class Object

compareTo

public ComparisonResult compareTo(Extractor<T,V,C> other)

Description copied from class: ExtractorBase

Basic comparisons with True and False.

Specified by:

compareTo in interface Extractor<T,V,C>

Overrides:

compareTo in class ExtractorBase<T,V,C>

Parameters:

other - Other extractor

Returns:

Comparison result.