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com.tangosol.coherence.config.scheme
Class LocalScheme

java.lang.Object
com.tangosol.coherence.config.scheme.AbstractScheme
com.tangosol.coherence.config.scheme.AbstractServiceScheme
com.tangosol.coherence.config.scheme.AbstractCachingScheme
com.tangosol.coherence.config.scheme.AbstractLocalCachingScheme
com.tangosol.coherence.config.scheme.LocalScheme

All Implemented Interfaces:

BackingMapManagerBuilder, BuilderCustomization, MapBuilder, NamedCacheBuilder, ServiceBuilder, CachingScheme, ObservableCachingScheme, Scheme, ServiceScheme

public class LocalScheme

extends AbstractLocalCachingScheme

The LocalScheme class is responsible for building a fully configured instance of a LocalCache. Note that a LocalCache may be used as a stand-alone cache or as part of a backing map.

This class will automatically inject the following types and named values into realized classes that have been annotated with @Injectable.

• BackingMapManagerContext (optionally named "manager-context")
• ConfigurableCacheFactory
• Cache Name (as a String.class named "cache-name")
• Context ClassLoader (optionally named "class-loader")
• ResourceRegistry
• CacheConfig
• together with any other resource, named or otherwise, available in the ResourceRegistry provided by the ConfigurableCacheFactory.

Since:

Coherence 12.1.2

Author:

pfm 2011.10.30

See Also:

Injectable

Nested Class Summary

Nested classes/interfaces inherited from interface com.tangosol.coherence.config.builder.MapBuilder

MapBuilder.Dependencies

Constructor Summary

LocalScheme()

Method Summary

CacheStoreScheme	getCacheStoreScheme() Return the CacheStoreScheme which builds a CacheStore or CacheLoader.
EvictionPolicyBuilder	getEvictionPolicyBuilder() Return the EvictionPolicyBuilder used to build an EvictionPolicy.
Seconds	getExpiryDelay(com.tangosol.config.expression.ParameterResolver resolver) Return the amount of time since the last update that entries are kept by the cache before being expired.
Units	getHighUnits(com.tangosol.config.expression.ParameterResolver resolver) Return the limit of cache size.
Units	getLowUnits(com.tangosol.config.expression.ParameterResolver resolver) Return the lowest number of units that a cache is pruned down to when pruning takes place.
UnitCalculatorBuilder	getUnitCalculatorBuilder() Return the UnitCalculatorBuilder used to build a UnitCalculator.
int	getUnitFactor(com.tangosol.config.expression.ParameterResolver resolver) Return the unit-factor element specifies the factor by which the units, low-units and high-units properties are adjusted.
boolean	isPreLoad(com.tangosol.config.expression.ParameterResolver resolver) Return true if a cache pre-loads data from its CacheLoader.
LocalCache	realizeMap(com.tangosol.config.expression.ParameterResolver resolver, MapBuilder.Dependencies dependencies) Realize a Map based on the state of the MapBuilder, resolvable parameters and provided MapBuilder.Dependencies.
void	setCacheStoreScheme(CacheStoreScheme scheme) Set the CacheStoreScheme which builds a CacheStore or CacheLoader.
void	setEvictionPolicyBuilder(EvictionPolicyBuilder bldr) Set the EvictionPolicyBuilder.
void	setExpiryDelay(com.tangosol.config.expression.Expression expr) Set the expiry delay.
void	setHighUnits(com.tangosol.config.expression.Expression expr) Set the high units.
void	setLowUnits(com.tangosol.config.expression.Expression expr) Set the low units.
void	setPreLoad(com.tangosol.config.expression.Expression expr) Set the pre-load enabled flag.
void	setUnitCalculatorBuilder(UnitCalculatorBuilder builder) Set the UnitCalculatorBuilder.
void	setUnitFactor(com.tangosol.config.expression.Expression expr) Set the unit factor.
protected void	validate(com.tangosol.config.expression.ParameterResolver resolver) Validate the properties.

Methods inherited from class com.tangosol.coherence.config.scheme.AbstractLocalCachingScheme

getCustomBuilder, getEventInterceptorBuilders, getServiceType, isRunningClusterNeeded, setCustomBuilder

Methods inherited from class com.tangosol.coherence.config.scheme.AbstractCachingScheme

establishMapListeners, getDefaultParameterResolver, getListenerBuilder, realizeBackingMapManager, realizeCache, setListenerBuilder

Methods inherited from class com.tangosol.coherence.config.scheme.AbstractServiceScheme

getScopedServiceName, getScopedServiceName, getScopeName, getServiceBuilder, getServiceName, getXml, injectScopeNameIntoService, isAutoStart, realizeService, setAutoStart, setScopeName, setServiceName, setXml, validate

Methods inherited from class com.tangosol.coherence.config.scheme.AbstractScheme

getSchemeName, isAnonymous, setSchemeName

Methods inherited from interface com.tangosol.coherence.config.scheme.ServiceScheme

getScopedServiceName, getScopedServiceName, getServiceBuilder, getServiceName, isAutoStart

Methods inherited from interface com.tangosol.coherence.config.scheme.Scheme

getSchemeName, isAnonymous

Constructor Detail

LocalScheme

public LocalScheme()

Method Detail

realizeMap

public LocalCache realizeMap(com.tangosol.config.expression.ParameterResolver resolver,
                             MapBuilder.Dependencies dependencies)

Realize a Map based on the state of the MapBuilder, resolvable parameters and provided MapBuilder.Dependencies.

Specified by:

realizeMap in interface MapBuilder

Overrides:

realizeMap in class AbstractCachingScheme

Parameters:

resolver - the ParameterResolver

dependencies - the MapBuilder.Dependencies for realizing the Map

Returns:

a Map

getCacheStoreScheme

public CacheStoreScheme getCacheStoreScheme()

Return the CacheStoreScheme which builds a CacheStore or CacheLoader.

Returns:

the CacheStoreScheme

setCacheStoreScheme

@Injectable(value="cachestore-scheme")
public void setCacheStoreScheme(CacheStoreScheme scheme)

Set the CacheStoreScheme which builds a CacheStore or CacheLoader.

Parameters:

scheme - the CacheStoreScheme

getEvictionPolicyBuilder

public EvictionPolicyBuilder getEvictionPolicyBuilder()

Return the EvictionPolicyBuilder used to build an EvictionPolicy.

Returns:

the builder

setEvictionPolicyBuilder

@Injectable(value="eviction-policy")
public void setEvictionPolicyBuilder(EvictionPolicyBuilder bldr)

Set the EvictionPolicyBuilder.

Parameters:

bldr - the EvictionPolicyBuilder

getExpiryDelay

public Seconds getExpiryDelay(com.tangosol.config.expression.ParameterResolver resolver)

Return the amount of time since the last update that entries are kept by the cache before being expired. Entries that have expired are not accessible and are evicted the next time a client accesses the cache. Any attempt to read an expired entry results in a reloading of the entry from the CacheStore.

Parameters:

resolver - the ParameterResolver

Returns:

the expiry delay

setExpiryDelay

@Injectable
public void setExpiryDelay(com.tangosol.config.expression.Expression expr)

Set the expiry delay.

Parameters:

expr - the expiry delay expression

getHighUnits

public Units getHighUnits(com.tangosol.config.expression.ParameterResolver resolver)

Return the limit of cache size. Contains the maximum number of units that can be placed n the cache before pruning occurs. An entry is the unit of measurement, unless it is overridden by an alternate unit-calculator. When this limit is exceeded, the cache begins the pruning process, evicting entries according to the eviction policy. Legal values are positive integers or zero. Zero implies no limit.

Parameters:

resolver - the ParameterResolver

Returns:

the high units

setHighUnits

@Injectable
public void setHighUnits(com.tangosol.config.expression.Expression expr)

Set the high units.

Parameters:

expr - the high units expression

getLowUnits

public Units getLowUnits(com.tangosol.config.expression.ParameterResolver resolver)

Return the lowest number of units that a cache is pruned down to when pruning takes place. A pruning does not necessarily result in a cache containing this number of units, however a pruning never results in a cache containing less than this number of units. An entry is the unit of measurement, unless it is overridden by an alternate unit-calculator. When pruning occurs entries continue to be evicted according to the eviction policy until this size. Legal values are positive integers or zero. Zero implies the default. The default value is 75% of the high-units setting (that is, for a high-units setting of 1000 the default low-units is 750).

Parameters:

resolver - the ParameterResolver

Returns:

the low units

setLowUnits

@Injectable
public void setLowUnits(com.tangosol.config.expression.Expression expr)

Set the low units.

Parameters:

expr - the low units

isPreLoad

public boolean isPreLoad(com.tangosol.config.expression.ParameterResolver resolver)

Return true if a cache pre-loads data from its CacheLoader.

Parameters:

resolver - the ParameterResolver

Returns:

true if pre-load is enabled

setPreLoad

@Injectable
public void setPreLoad(com.tangosol.config.expression.Expression expr)

Set the pre-load enabled flag.

Parameters:

expr - true to enable pre-load

getUnitCalculatorBuilder

public UnitCalculatorBuilder getUnitCalculatorBuilder()

Return the UnitCalculatorBuilder used to build a UnitCalculator.

Returns:

the unit calculator

setUnitCalculatorBuilder

@Injectable(value="unit-calculator")
public void setUnitCalculatorBuilder(UnitCalculatorBuilder builder)

Set the UnitCalculatorBuilder.

Parameters:

builder - the UnitCalculatorBuilder

getUnitFactor

public int getUnitFactor(com.tangosol.config.expression.ParameterResolver resolver)

Return the unit-factor element specifies the factor by which the units, low-units and high-units properties are adjusted. Using a BINARY unit calculator, for example, the factor of 1048576 could be used to count megabytes instead of bytes.

Parameters:

resolver - the ParameterResolver

Returns:

the unit factor

setUnitFactor

@Injectable
public void setUnitFactor(com.tangosol.config.expression.Expression expr)

Set the unit factor.

Parameters:

expr - the unit factor expression

validate

protected void validate(com.tangosol.config.expression.ParameterResolver resolver)

Validate the properties.

Overrides:

validate in class AbstractCachingScheme

Parameters:

resolver - the ParameterResolver needed to resolve expressions

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