SupplyKeyMatchingValueOrNull (Apache jclouds 2.1.0 API)

java.lang.Object
- org.jclouds.suppliers.SupplyKeyMatchingValueOrNull<K,V>

All Implemented Interfaces:

com.google.common.base.Supplier<K>

Direct Known Subclasses:

GetRegionIdMatchingProviderURIOrNull
```
public class SupplyKeyMatchingValueOrNull<K,V>
extends Object
implements com.google.common.base.Supplier<K>
```
Allows you to lazy discover a key by value. This is useful for example in service discovery, where you need to see what the "current" service name is based on a map of service names to endpoints.
note
take care to memoize this using Suppliers.memoize(Supplier)

Field Summary

Fields
Modifier and Type Field and Description

protected Logger logger

Fields
Modifier and Type	Field and Description
`protected Logger`	`logger`

Constructor Summary

Constructors
Constructor and Description
`SupplyKeyMatchingValueOrNull(com.google.common.base.Supplier<Map<K,com.google.common.base.Supplier<V>>> supplier, com.google.common.base.Supplier<V> valueSupplier)`

Method Summary

Methods
Modifier and Type Method and Description

K get()
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods
Modifier and Type	Method and Description
`K`	`get()`

Field Detail
- logger
```
protected Logger logger
```

Constructor Detail

SupplyKeyMatchingValueOrNull

public SupplyKeyMatchingValueOrNull(com.google.common.base.Supplier<Map<K,com.google.common.base.Supplier<V>>> supplier,
                            com.google.common.base.Supplier<V> valueSupplier)

Method Detail
- get
```
public K get()
```
  Specified by:
  
  get in interface com.google.common.base.Supplier<K>

Class SupplyKeyMatchingValueOrNull<K,V>

note

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

logger

Constructor Detail

SupplyKeyMatchingValueOrNull

Method Detail

get