Package com.tangosol.coherence.config.scheme

Class AbstractJournalScheme<T>

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<T>
com.tangosol.coherence.config.scheme.AbstractJournalScheme<T>
All Implemented Interfaces:
BackingMapManagerBuilder, BuilderCustomization<T>, MapBuilder, NamedCacheBuilder, ServiceBuilder, CachingScheme, ObservableCachingScheme, Scheme, ServiceScheme
Direct Known Subclasses:
FlashJournalScheme, RamJournalScheme
public abstract class AbstractJournalScheme<T> extends AbstractLocalCachingScheme<T>
The AbstractJournalScheme contains functionality common to all Journal schemes.
Since:
Coherence 12.1.2
Author:
pfm 2011.11.30

  • Constructor Details

    • AbstractJournalScheme

      public AbstractJournalScheme()

  • Method Details

    • getEvictionPolicyBuilder

      public EvictionPolicyBuilder getEvictionPolicyBuilder()
      Return the EvictionPolicyBuilder used to build an EvictionPolicy.
      Returns:
      the builder

    • setEvictionPolicyBuilder

      @Injectable("eviction-policy") public void setEvictionPolicyBuilder(EvictionPolicyBuilder bldr)
      Set the EvictionPolicyBuilder.
      Parameters:
      bldr - the EvictionPolicyBuilder

    • getExpiryDelay

      public Seconds getExpiryDelay(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(Expression<Seconds> expr)
      Set the expiry delay.
      Parameters:
      expr - the expiry delay expression

    • getHighUnits

      public Units getHighUnits(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(Expression<Units> expr)
      Set the high units.
      Parameters:
      expr - the high units expression

    • getLowUnits

      public Units getLowUnits(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(Expression<Units> expr)
      Set the low units.
      Parameters:
      expr - the low units

    • getUnitCalculatorBuilder

      public UnitCalculatorBuilder getUnitCalculatorBuilder()
      Return the UnitCalculatorBuilder used to build a UnitCalculator.
      Returns:
      the unit calculator

    • setUnitCalculatorBuilder

      @Injectable("unit-calculator") public void setUnitCalculatorBuilder(UnitCalculatorBuilder builder)
      Set the UnitCalculatorBuilder.
      Parameters:
      builder - the UnitCalculatorBuilder

    • getUnitFactor

      public int getUnitFactor(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(Expression<Integer> expr)
      Set the unit factor.
      Parameters:
      expr - the unit factor expression