Package com.google.gerrit.extensions.client

Class NullableBooleanPreferencesFieldComparator

java.lang.Object

com.google.gerrit.extensions.client.NullableBooleanPreferencesFieldComparator

public class NullableBooleanPreferencesFieldComparator
extends Object

Utility class to compare nullable Boolean preferences fields.

This class only meant to be used for comparing preferences fields that are potentially loaded using ConfigUtil (such as GeneralPreferencesInfo, DiffPreferencesInfo and EditPreferencesInfo).

Constructor Summary

Constructors

Constructor	Description
NullableBooleanPreferencesFieldComparator()

Method Summary

Modifier and Type	Method	Description
static boolean	equalBooleanPreferencesFields(Boolean a, Boolean b)	Compare 2 nullable Boolean preferences fields, regard to null as false.

Methods inherited from class java.lang.Object

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

Constructor Details

NullableBooleanPreferencesFieldComparator

public NullableBooleanPreferencesFieldComparator()

Method Details

equalBooleanPreferencesFields

public static boolean equalBooleanPreferencesFields(Boolean a,
 Boolean b)

Compare 2 nullable Boolean preferences fields, regard to null as false.

ConfigUtil.loadSection(org.eclipse.jgit.lib.Config, java.lang.String, java.lang.String, T, T, T) sets the following values for Boolean fields, relating to null as false the same way:

user-def	default	result
true	true	true
true	false	true
true	null	true
false	true	false
false	false	null
false	null	null
null	true	true
null	false	null
null	null	null

When reading the values, the readers always check whether the value is true, practically referring to null values as false anyway. Preferences equality methods should reflect this state.