com.haulmont.cuba.gui.model.impl

Class EntityValuesComparator<T>

java.lang.Object

com.haulmont.cuba.gui.data.impl.AbstractComparator<T>

com.haulmont.cuba.gui.model.impl.EntityValuesComparator<T>

All Implemented Interfaces:

java.util.Comparator<T>

public class EntityValuesComparator<T>
extends AbstractComparator<T>

A comparison function, which imposes a ordering for entity attribute values.

For example, to obtain a Comparator that compares com.haulmont.cuba.core.entity.Entity objects by some property that is specified by com.haulmont.chile.core.model.MetaPropertyPath:

 Comparator.comparing(e -> e.getValueEx(propertyPath), EntityValuesComparator.of(asc))

Field Summary

Fields

Modifier and Type	Field and Description
static java.util.Comparator<java.lang.Object>	NATURAL_ORDER
static java.util.Comparator<java.lang.Object>	REVERSE_ORDER

Fields inherited from class com.haulmont.cuba.gui.data.impl.AbstractComparator

asc, metadata, nullsLast

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	EntityValuesComparator(boolean asc)

Method Summary

Modifier and Type	Method and Description
static java.util.Comparator<java.lang.Object>	asc(boolean asc)
int	compare(T o1, T o2)
protected java.lang.Object	transformValue(T value)

Methods inherited from class com.haulmont.cuba.gui.data.impl.AbstractComparator

__compare, compareAsc

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

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

Field Detail

NATURAL_ORDER

public static final java.util.Comparator<java.lang.Object> NATURAL_ORDER

REVERSE_ORDER

public static final java.util.Comparator<java.lang.Object> REVERSE_ORDER

Constructor Detail

EntityValuesComparator

protected EntityValuesComparator(boolean asc)

Method Detail

asc

public static java.util.Comparator<java.lang.Object> asc(boolean asc)

compare

public int compare(T o1,
                   T o2)

transformValue

protected java.lang.Object transformValue(T value)