Module nl.jqno.equalsverifier

Package nl.jqno.equalsverifier.internal.util

Class CachedHashCodeInitializer<T>

java.lang.Object

nl.jqno.equalsverifier.internal.util.CachedHashCodeInitializer<T>

public class CachedHashCodeInitializer<T>
extends Object

Records an initializer for a cached hash code (field name and recompute method), if any, for the object to be verified.

EqualsVerifier may then, instead of calling Object.hashCode() to obtain the hash code, call the getInitializedHashCode(Object) method in this class:

* If this class has recorded a cached hash code initializer for the object, that method will recompute and update the cached hash code in the object automatically, before returning the result of Object.hashCode().

* If this class has not recorded a cached hash code initializer for the object, it will simply return the value of Object.hashCode() as normal instead.

Field Summary

Fields

Modifier and Type	Field	Description
private final FieldProbe	cachedHashCodeField
private final Method	calculateMethod
private final T	example
private final boolean	passthrough

Constructor Summary

Constructors

Modifier	Constructor	Description
private	CachedHashCodeInitializer()
private	CachedHashCodeInitializer(boolean passthrough, FieldProbe cachedHashCodeField, Method calculateMethod, T example)
	CachedHashCodeInitializer(Class<?> type, String cachedHashCodeField, String calculateHashCodeMethod, T example)

Method Summary

Modifier and Type	Method	Description
private static FieldProbe	findCachedHashCodeField(Class<?> type, String cachedHashCodeFieldName)
private static Method	findCalculateHashCodeMethod(Class<?> type, String calculateHashCodeMethodName, boolean acceptPublicMethod)
String	getCachedHashCodeFieldName()
T	getExample()
int	getInitializedHashCode(Object object)
boolean	isPassthrough()
static <T> CachedHashCodeInitializer<T>	lombokCachedHashcode(T example)
static <T> CachedHashCodeInitializer<T>	passthrough()
private void	recomputeCachedHashCode(Object object)

Methods inherited from class java.lang.Object

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

Field Details

passthrough

private final boolean passthrough

cachedHashCodeField

private final FieldProbe cachedHashCodeField

calculateMethod

private final Method calculateMethod

example

private final T example

Constructor Details

CachedHashCodeInitializer

private CachedHashCodeInitializer()

CachedHashCodeInitializer

private CachedHashCodeInitializer(boolean passthrough,
 FieldProbe cachedHashCodeField,
 Method calculateMethod,
 T example)

CachedHashCodeInitializer

public CachedHashCodeInitializer(Class<?> type,
 String cachedHashCodeField,
 String calculateHashCodeMethod,
 T example)

Method Details

passthrough

public static <T> CachedHashCodeInitializer<T> passthrough()

lombokCachedHashcode

public static <T> CachedHashCodeInitializer<T> lombokCachedHashcode(T example)

isPassthrough

public boolean isPassthrough()

getExample

public T getExample()

getCachedHashCodeFieldName

public String getCachedHashCodeFieldName()

getInitializedHashCode

public int getInitializedHashCode(Object object)

recomputeCachedHashCode

private void recomputeCachedHashCode(Object object)

findCachedHashCodeField

private static FieldProbe findCachedHashCodeField(Class<?> type,
 String cachedHashCodeFieldName)

findCalculateHashCodeMethod

private static Method findCalculateHashCodeMethod(Class<?> type,
 String calculateHashCodeMethodName,
 boolean acceptPublicMethod)