org.dashbuilder.comparator

Class AbstractComparatorByCriteria

java.lang.Object

org.dashbuilder.comparator.AbstractComparatorByCriteria

All Implemented Interfaces:

Comparator, ComparatorByCriteria

public abstract class AbstractComparatorByCriteria
extends Object
implements ComparatorByCriteria

Base class for the implementation of custom comparators.

Field Summary

Fields

Modifier and Type	Field and Description
protected ArrayList	sortCriterias Sort criteria list.

Fields inherited from interface org.dashbuilder.comparator.ComparatorByCriteria

ORDER_ASCENDING, ORDER_DESCENDING, ORDER_UNSPECIFIED

Constructor Summary

Constructors

Constructor and Description
AbstractComparatorByCriteria()

Method Summary

Modifier and Type	Method and Description
void	addSortCriteria(String criteriaId, int order) Specifies a sort criteria for the comparator.
abstract int	compare(Object o1, Object o2) To be implemented by subclasses.
boolean	equals(Object obj)
boolean	existCriteria(String criteriaId) Check if a given criteria is applied in comparator.
String[]	getCriteriaIds() Retrieve ids. for all criterias specified.
protected Object[]	getSortCriteria(String criteriaId)
int	getSortCriteriaOrdering(String criteriaId) Retrieves the ordering specified for a given criteria.
int	getSortCriteriaPriority(String criteriaId) Retrieves the current priority for a given criteria.
void	removeAllSortCriteria() Removes all sort criterias.
void	removeSortCriteria(String criteriaId) Removes a sort criteria.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Field Detail

sortCriterias

protected ArrayList sortCriterias

Sort criteria list. Each entry contains a criteria properties array of int[2] (criteria id. and ordering mode). The position in the list determines the criteria priority in descending order: the first criteria into the list is the most prioritary.

Constructor Detail

AbstractComparatorByCriteria

public AbstractComparatorByCriteria()

Method Detail

addSortCriteria

public void addSortCriteria(String criteriaId,
                            int order)

Description copied from interface: ComparatorByCriteria

Specifies a sort criteria for the comparator.

Specified by:

addSortCriteria in interface ComparatorByCriteria

Parameters:

criteriaId - The criteria to set.

order - The sort order. See ORDER_ constants defined.

removeSortCriteria

public void removeSortCriteria(String criteriaId)

Description copied from interface: ComparatorByCriteria

Removes a sort criteria.

Specified by:

removeSortCriteria in interface ComparatorByCriteria

Parameters:

criteriaId - The criteria to remove.

removeAllSortCriteria

public void removeAllSortCriteria()

Description copied from interface: ComparatorByCriteria

Removes all sort criterias.

Specified by:

removeAllSortCriteria in interface ComparatorByCriteria

getSortCriteriaPriority

public int getSortCriteriaPriority(String criteriaId)

Description copied from interface: ComparatorByCriteria

Retrieves the current priority for a given criteria. Priority is set when the criteria is specified. The first criteria specified is the most prioritary.

Specified by:

getSortCriteriaPriority in interface ComparatorByCriteria

Parameters:

criteriaId - The criteria to set.

Returns:

The priority from 1 to <max. number of criterias>.
0 if criteria is not specified in this comparator.

getSortCriteriaOrdering

public int getSortCriteriaOrdering(String criteriaId)

Description copied from interface: ComparatorByCriteria

Retrieves the ordering specified for a given criteria.

Specified by:

getSortCriteriaOrdering in interface ComparatorByCriteria

Parameters:

criteriaId - The criteria to set. See CRITERIA_ constants defined.

getCriteriaIds

public String[] getCriteriaIds()

Description copied from interface: ComparatorByCriteria

Retrieve ids. for all criterias specified.

Specified by:

getCriteriaIds in interface ComparatorByCriteria

getSortCriteria

protected Object[] getSortCriteria(String criteriaId)

existCriteria

public boolean existCriteria(String criteriaId)

Description copied from interface: ComparatorByCriteria

Check if a given criteria is applied in comparator.

Specified by:

existCriteria in interface ComparatorByCriteria

equals

public boolean equals(Object obj)

Specified by:

equals in interface Comparator

Overrides:

equals in class Object

compare

public abstract int compare(Object o1,
                            Object o2)

To be implemented by subclasses.

Specified by:

compare in interface Comparator