Package ch.tocco.nice2.persist.security.impl.provider

Class GuardCachingSecurityDomain<T>

java.lang.Object

ch.tocco.nice2.persist.security.impl.provider.GuardCachingSecurityDomain<T>

All Implemented Interfaces:

SecurityDomain

Direct Known Subclasses:

AbstractEntitySecurityDomain

public abstract class GuardCachingSecurityDomain<T>
extends Object
implements SecurityDomain

Abstract SecurityDomain that caches Policy instances and shares them between different secured objects that use the same rules (per SecurityContext). The policy may contain hundreds of rules that need to checked to see if they apply to the current secured object. Therefore it makes sense to cache them if a lot of Guard objects are created for a SecurityDomain.

Field Summary

Fields

Modifier and Type	Field	Description
protected final Context	context

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	GuardCachingSecurityDomain(Context context)

Method Summary

Modifier and Type	Method	Description
protected abstract com.google.common.cache.Cache<T,Policy>	buildCache()
void	clearGuardCache(SecurityContext securityContext)	Clear all cached objects belonging to the given security context.
protected abstract T	createCacheKey(List<?> objects)	Converts the list of secured objects into an object that is used to group policies.
Policy	getOrCreateFilteredPolicy(SecurityContext securityContext, List<?> objects, Callable<Policy> provider)	Return a policy for the given objects.

Methods inherited from class java.lang.Object

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

Methods inherited from interface ch.tocco.nice2.security.spi.SecurityDomain

aggregateSupportedObjects, evaluateCondition, getSelectorFactory

Field Details

context

protected final Context context

Constructor Details

GuardCachingSecurityDomain

protected GuardCachingSecurityDomain(Context context)

Method Details

getOrCreateFilteredPolicy

public Policy getOrCreateFilteredPolicy(SecurityContext securityContext,
 List<?> objects,
 Callable<Policy> provider)
                                 throws Exception

Description copied from interface: SecurityDomain

Return a policy for the given objects. This can be used to cache and reuse policies for different objects. If no cached policy is available, the given Callable can be used to create a new one.

Specified by:

getOrCreateFilteredPolicy in interface SecurityDomain

Throws:

Exception

createCacheKey

protected abstract T createCacheKey(List<?> objects)

Converts the list of secured objects into an object that is used to group policies. That means if two different lists return the same object, they will share the same policy.

buildCache

protected abstract com.google.common.cache.Cache<T,Policy> buildCache()

clearGuardCache

public void clearGuardCache(SecurityContext securityContext)

Description copied from interface: SecurityDomain

Clear all cached objects belonging to the given security context.

Specified by:

clearGuardCache in interface SecurityDomain