Package com.googlecode.objectify.cache.spymemcached

Class SpyMemcacheService

java.lang.Object

com.googlecode.objectify.cache.spymemcached.SpyMemcacheService

All Implemented Interfaces:

MemcacheService

public class SpyMemcacheService
extends Object
implements MemcacheService

Among the issues this impl needs to be concerned with is that memcached doesn't store nulls. We have to replace it with something (in our case, an empty string).

Nested Class Summary

Nested classes/interfaces inherited from interface com.googlecode.objectify.cache.MemcacheService

MemcacheService.CasPut

Constructor Summary

Constructors

Constructor	Description
SpyMemcacheService()

Method Summary

Modifier and Type	Method	Description
void	deleteAll(Collection<String> keys)
Object	get(String key)
Map<String,Object>	getAll(Collection<String> keys)
Map<String,IdentifiableValue>	getIdentifiables(Collection<String> keys)	For cache implementations that don't handle a cold cache for a key (eg memcached), the implementation of this method needs to hide that behavior (ie, bootstrap an initial value so we can get a CAS value).
void	put(String key, Object value)	Values can be null
void	putAll(Map<String,Object> values)	Values can be null
Set<String>	putIfUntouched(Map<String,MemcacheService.CasPut> values)	Values can be null

Methods inherited from class java.lang.Object

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

Constructor Details

SpyMemcacheService

public SpyMemcacheService()

Method Details

get

public Object get(String key)

Specified by:

get in interface MemcacheService

Returns:

the value in memcache for this, or null if there was nothing there

getIdentifiables

public Map<String,IdentifiableValue> getIdentifiables(Collection<String> keys)

Description copied from interface: MemcacheService

For cache implementations that don't handle a cold cache for a key (eg memcached), the implementation of this method needs to hide that behavior (ie, bootstrap an initial value so we can get a CAS value). That doesn't mean the result will always be a value; the bootstrap may fail (for whatever reason) and the resulting map value for a key will be null.

Specified by:

getIdentifiables in interface MemcacheService

getAll

public Map<String,Object> getAll(Collection<String> keys)

Specified by:

getAll in interface MemcacheService

put

public void put(String key,
 Object value)

Description copied from interface: MemcacheService

Values can be null

Specified by:

put in interface MemcacheService

putIfUntouched

public Set<String> putIfUntouched(Map<String,MemcacheService.CasPut> values)

Description copied from interface: MemcacheService

Values can be null

Specified by:

putIfUntouched in interface MemcacheService

Returns:

a set of all the keys that succeeded

putAll

public void putAll(Map<String,Object> values)

Description copied from interface: MemcacheService

Values can be null

Specified by:

putAll in interface MemcacheService

deleteAll

public void deleteAll(Collection<String> keys)

Specified by:

deleteAll in interface MemcacheService