MultiCacheKey

All Implemented Interfaces:

com.facebook.cache.common.CacheKey
```
public class MultiCacheKey
 implements CacheKey
                    
```
A cache key that wraps multiple cache keys.
Note: {@code equals} and {@code hashcode} are implemented in a way that two MultiCacheKeys are equal if and only if the underlying list of cache keys is equal. That implies AllOf semantics. Unfortunately, it is not possible to implement AnyOf semantics for {@code equals} because the transitivity requirement wouldn't be satisfied. I.e. we would have: {A} = {A, B}, {A, B} = {B}, but {A} != {B}.
It is fine to use this key with AnyOf semantics, but one should be aware of {@code equals} and {@code hashcode} behavior, and should implement AnyOf logic manually.

Constructor Summary

Constructors
Constructor	Description
`MultiCacheKey(List<CacheKey> cacheKeys)`

Method Summary

Modifier and Type	Method	Description
`List<CacheKey>`	`getCacheKeys()`
`String`	`toString()`
`boolean`	`equals(@Nullable() Object o)`
`int`	`hashCode()`
`boolean`	`containsUri(Uri uri)`	Returns true if this key was constructed from this Uri.
`String`	`getUriString()`	Returns a string representation of the URI at the heart of the cache key.
`boolean`	`isResourceIdForDebugging()`	Returns true if this key was constructed from a resource ID.

Methods inherited from class com.facebook.cache.common.CacheKey
equals
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - MultiCacheKey
```
MultiCacheKey(List<CacheKey> cacheKeys)
```
- Method Detail
  - getCacheKeys
```
 List<CacheKey> getCacheKeys()
```
  - toString
```
 String toString()
```
  - equals
```
 boolean equals(@Nullable() Object o)
```
  - hashCode
```
 int hashCode()
```
  - containsUri
```
 boolean containsUri(Uri uri)
```
    Returns true if this key was constructed from this Uri.
    Used for cases like deleting all keys for a given uri.
  - getUriString
```
 String getUriString()
```
    Returns a string representation of the URI at the heart of the cache key. In cases of multiplekeys being contained, the first is returned.
  - isResourceIdForDebugging
```
 boolean isResourceIdForDebugging()
```
    Returns true if this key was constructed from a resource ID. If this ever changes, the diskcache entries corresponding to this cache key would be invalidated.