Package org.javers.core.diff.custom

Class CustomBigDecimalComparator

java.lang.Object

org.javers.core.diff.custom.CustomBigDecimalComparator

All Implemented Interfaces:

CustomPropertyComparator<java.math.BigDecimal,ValueChange>

public class CustomBigDecimalComparator
extends java.lang.Object
implements CustomPropertyComparator<java.math.BigDecimal,ValueChange>

Compares BigDecimals with custom precision. Before comparing, values are rounded (HALF_UP) to required scale.

Usage example:

 JaversBuilder.javers()
     .registerCustomComparator(new CustomBigDecimalComparator(2), BigDecimal.class).build();
 

Constructor Summary

Constructors

Constructor	Description
CustomBigDecimalComparator(int significantDecimalPlaces)

Method Summary

Modifier and Type	Method	Description
java.util.Optional<ValueChange>	compare(java.math.BigDecimal left, java.math.BigDecimal right, GlobalId affectedId, Property property)	Called by JaVers to calculate property-to-property diff between two Custom Type objects.
boolean	equals(java.math.BigDecimal a, java.math.BigDecimal b)	Called by JaVers to calculate collection-to-collection diff, when Custom Type objects are Collection items.

Methods inherited from class java.lang.Object

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

Constructor Detail

CustomBigDecimalComparator

public CustomBigDecimalComparator(int significantDecimalPlaces)

Method Detail

compare

public java.util.Optional<ValueChange> compare(java.math.BigDecimal left,
                                               java.math.BigDecimal right,
                                               GlobalId affectedId,
                                               Property property)

Description copied from interface: CustomPropertyComparator

Called by JaVers to calculate property-to-property diff between two Custom Type objects.

Specified by:

compare in interface CustomPropertyComparator<java.math.BigDecimal,ValueChange>

Parameters:

left - left (or old) value

right - right (or current) value

affectedId - Id of domain object being compared

property - property being compared

Returns:

should return Optional.empty() if compared objects are the same

equals

public boolean equals(java.math.BigDecimal a,
                      java.math.BigDecimal b)

Description copied from interface: CustomPropertyComparator

Called by JaVers to calculate collection-to-collection diff, when Custom Type objects are Collection items.

Both equals() and compare() should return consistent results. When compare() returns Optional.empty(), equals() should return false.

Specified by:

equals in interface CustomPropertyComparator<java.math.BigDecimal,ValueChange>