com.bumptech.glide.signature

Class ObjectKey

java.lang.Object

com.bumptech.glide.signature.ObjectKey

All Implemented Interfaces:

Key

public final class ObjectKey
extends Object
implements Key

Wraps an Object, delegating equals(Object) and hashCode() to the wrapped Object and providing the bytes of the result of the Object's toString() method to the MessageDigest in updateDiskCacheKey(java.security.MessageDigest).

The Object's toString() method must be unique and suitable for use as a disk cache key.

Field Summary

Fields inherited from interface com.bumptech.glide.load.Key

CHARSET, STRING_CHARSET_NAME

Constructor Summary

Constructors

Constructor and Description
ObjectKey(Object object)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o) For caching to work correctly, implementations must implement this method and Key.hashCode().
int	hashCode() For caching to work correctly, implementations must implement this method and Key.equals(Object).
String	toString()
void	updateDiskCacheKey(MessageDigest messageDigest) Adds all uniquely identifying information to the given digest.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ObjectKey

public ObjectKey(@NonNull
                 Object object)

Method Detail

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Description copied from interface: Key

For caching to work correctly, implementations must implement this method and Key.hashCode().

Specified by:

equals in interface Key

Overrides:

equals in class Object

hashCode

public int hashCode()

Description copied from interface: Key

For caching to work correctly, implementations must implement this method and Key.equals(Object).

Specified by:

hashCode in interface Key

Overrides:

hashCode in class Object

updateDiskCacheKey

public void updateDiskCacheKey(@NonNull
                               MessageDigest messageDigest)

Description copied from interface: Key

Adds all uniquely identifying information to the given digest.

Note - Using MessageDigest.reset() inside of this method will result in undefined behavior.

Specified by:

updateDiskCacheKey in interface Key