com.hammurapi.extract

Class Or<T,C>

java.lang.Object

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

com.hammurapi.extract.Or<T,C>

Type Parameters:

T -

All Implemented Interfaces:

CompositePredicate<T,List<Predicate<T,C>>,C,Or<T,C>>, Extractor<T,Boolean,C>, FacadeExtractor<T,Boolean,C>, Mappable<T,Boolean,C>, Predicate<T,C>, Serializable, Cloneable

public class Or<T,C>
extends ExtractorBase<T,Boolean,C>
implements CompositePredicate<T,List<Predicate<T,C>>,C,Or<T,C>>, Serializable

Non-commutative OR.

See Also:

Serialized Form

Field Summary

Fields inherited from class com.hammurapi.extract.ExtractorBase

cost, costUnit, initialCost, invocations, nanos, totalCost

Constructor Summary

Constructors

Constructor and Description
Or(double initialCost, TimeUnit costUnit)
Or(double initialCost, TimeUnit costUnit, Iterable<Predicate<T,C>> parts)
Or(double initialCost, TimeUnit costUnit, Predicate<T,C>... parts)

Method Summary

Methods

Modifier and Type	Method and Description
Or<T,C>	add(Predicate<T,C> part)
Object	clone()
ComparisonResult	compareTo(Extractor<T,Boolean,C> otherPredicate) Basic comparisons with True and False.
protected Boolean	extractInternal(C context, Map<C,Map<Extractor<T,? super Boolean,C>,? super Boolean>> cache, T... obj)
double	getCost()
List<Predicate<T,C>>	getParts()
boolean	isContextDependent()
Extractor<T,Boolean,C>	map(int[] map) Applies mapping to extractor.
Predicate<T,C>	normalize() Normalizes predicate by removing less restrictive parts in AND or more restrictive parts in OR, and analyzing if predicate is always TRUE or always FALSE.
Set<Integer>	parameterIndices()
Predicate<T,C>	remove(Predicate<T,C> part)
String	toString()

Methods inherited from class com.hammurapi.extract.ExtractorBase

createCacheEntry, equals, extract

Methods inherited from class java.lang.Object

finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.hammurapi.extract.Extractor

extract

Constructor Detail

Or

public Or(double initialCost,
  TimeUnit costUnit)

Or

public Or(double initialCost,
  TimeUnit costUnit,
  Predicate<T,C>... parts)

Or

public Or(double initialCost,
  TimeUnit costUnit,
  Iterable<Predicate<T,C>> parts)

Method Detail

getParts

public List<Predicate<T,C>> getParts()

Specified by:

getParts in interface CompositePredicate<T,List<Predicate<T,C>>,C,Or<T,C>>

Returns:

Sub-predicates.

compareTo

public ComparisonResult compareTo(Extractor<T,Boolean,C> otherPredicate)

Description copied from class: ExtractorBase

Basic comparisons with True and False.

Specified by:

compareTo in interface Extractor<T,Boolean,C>

Overrides:

compareTo in class ExtractorBase<T,Boolean,C>

Parameters:

otherPredicate - Other extractor

Returns:

Comparison result.

extractInternal

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

Specified by:

extractInternal in class ExtractorBase<T,Boolean,C>

parameterIndices

public Set<Integer> parameterIndices()

Specified by:

parameterIndices in interface Extractor<T,Boolean,C>

Returns:

Indexes of objects which this extractor uses for computations.

remove

public Predicate<T,C> remove(Predicate<T,C> part)

Specified by:

remove in interface CompositePredicate<T,List<Predicate<T,C>>,C,Or<T,C>>

Returns:

Returns composite predicate of the same type without given part. If there is one remaining part then this part is returned.

normalize

public Predicate<T,C> normalize()

Description copied from interface: CompositePredicate

Normalizes predicate by removing less restrictive parts in AND or more restrictive parts in OR, and analyzing if predicate is always TRUE or always FALSE.

Specified by:

normalize in interface CompositePredicate<T,List<Predicate<T,C>>,C,Or<T,C>>

Returns:

Normalized predicate, True if predicate always evaluates to true, False if predicate always evaluates to false.

isContextDependent

public boolean isContextDependent()

Specified by:

isContextDependent in interface Extractor<T,Boolean,C>

Returns:

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

toString

public String toString()

Overrides:

toString in class Object

getCost

public double getCost()

Specified by:

getCost in interface Extractor<T,Boolean,C>

Overrides:

getCost in class ExtractorBase<T,Boolean,C>

Returns:

Extractor evaluation cost. Cost is used for optimization of computation intensive algorithms. E.g. in Store it is used for selection of indices for query operations.

map

public Extractor<T,Boolean,C> map(int[] map)

Description copied from interface: Mappable

Applies mapping to extractor.

Specified by:

map in interface Mappable<T,Boolean,C>

Returns:

Extractor with changed mapping or null if mapping is not possible.

clone

public Object clone()
             throws CloneNotSupportedException

Overrides:

clone in class Object

Throws:

CloneNotSupportedException

add

public Or<T,C> add(Predicate<T,C> part)

Specified by:

add in interface CompositePredicate<T,List<Predicate<T,C>>,C,Or<T,C>>