org.hibernate.boot.registry.selector.internal

Class StrategySelectorImpl

java.lang.Object

org.hibernate.boot.registry.selector.internal.StrategySelectorImpl

All Implemented Interfaces:

java.io.Serializable, StrategySelector, Service

public class StrategySelectorImpl
extends java.lang.Object
implements StrategySelector

Standard implementation of the StrategySelector contract.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static StrategyCreator	STANDARD_STRATEGY_CREATOR

Constructor Summary

Constructors

Constructor and Description
StrategySelectorImpl(ClassLoaderService classLoaderService) Constructs a StrategySelectorImpl using the given class loader service.

Method Summary

Modifier and Type	Method and Description
<T> void	registerStrategyImplementor(java.lang.Class<T> strategy, java.lang.String name, java.lang.Class<? extends T> implementation) Registers a named implementor of a particular strategy contract.
<T> T	resolveDefaultableStrategy(java.lang.Class<T> strategy, java.lang.Object strategyReference, java.util.concurrent.Callable<T> defaultResolver) Resolve strategy instances.
<T> T	resolveDefaultableStrategy(java.lang.Class<T> strategy, java.lang.Object strategyReference, T defaultValue) Resolve strategy instances.
<T> T	resolveStrategy(java.lang.Class<T> strategy, java.lang.Object strategyReference) Resolve strategy instances.
<T> T	resolveStrategy(java.lang.Class<T> strategy, java.lang.Object strategyReference, java.util.concurrent.Callable<T> defaultResolver, StrategyCreator<T> creator)
<T> T	resolveStrategy(java.lang.Class<T> strategy, java.lang.Object strategyReference, T defaultValue, StrategyCreator<T> creator)
<T> java.lang.Class<? extends T>	selectStrategyImplementor(java.lang.Class<T> strategy, java.lang.String name) Locate the named strategy implementation.
<T> void	unRegisterStrategyImplementor(java.lang.Class<T> strategy, java.lang.Class<? extends T> implementation) Un-registers a named implementor of a particular strategy contract.

Methods inherited from class java.lang.Object

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

Field Detail

STANDARD_STRATEGY_CREATOR

public static StrategyCreator STANDARD_STRATEGY_CREATOR

Constructor Detail

StrategySelectorImpl

public StrategySelectorImpl(ClassLoaderService classLoaderService)

Constructs a StrategySelectorImpl using the given class loader service.

Parameters:

classLoaderService - The class loader service usable by this StrategySelectorImpl instance.

Method Detail

registerStrategyImplementor

public <T> void registerStrategyImplementor(java.lang.Class<T> strategy,
                                            java.lang.String name,
                                            java.lang.Class<? extends T> implementation)

Description copied from interface: StrategySelector

Registers a named implementor of a particular strategy contract.

Specified by:

registerStrategyImplementor in interface StrategySelector

Type Parameters:

T - The type of the strategy. Used to make sure that the strategy and implementation are type compatible.

Parameters:

strategy - The strategy contract.

name - The registration name

implementation - The implementation Class

unRegisterStrategyImplementor

public <T> void unRegisterStrategyImplementor(java.lang.Class<T> strategy,
                                              java.lang.Class<? extends T> implementation)

Description copied from interface: StrategySelector

Un-registers a named implementor of a particular strategy contract. Un-registers all named registrations for the given strategy contract naming the given class.

Specified by:

unRegisterStrategyImplementor in interface StrategySelector

Type Parameters:

T - The type of the strategy. Used to make sure that the strategy and implementation are type compatible.

Parameters:

strategy - The strategy contract.

implementation - The implementation Class

selectStrategyImplementor

public <T> java.lang.Class<? extends T> selectStrategyImplementor(java.lang.Class<T> strategy,
                                                                  java.lang.String name)

Description copied from interface: StrategySelector

Locate the named strategy implementation.

Specified by:

selectStrategyImplementor in interface StrategySelector

Type Parameters:

T - The type of the strategy. Used to make sure that the strategy and implementation are type compatible.

Parameters:

strategy - The type of strategy to be resolved.

name - The name of the strategy to locate; might be either a registered name or the implementation FQN.

Returns:

The named strategy implementation class.

resolveStrategy

public <T> T resolveStrategy(java.lang.Class<T> strategy,
                             java.lang.Object strategyReference)

Description copied from interface: StrategySelector

Resolve strategy instances. See discussion on StrategySelector.resolveDefaultableStrategy(java.lang.Class<T>, java.lang.Object, T). Only difference is that here, the implied default value is null.

Specified by:

resolveStrategy in interface StrategySelector

Type Parameters:

T - The type of the strategy. Used to make sure that the strategy and implementation are type compatible.

Parameters:

strategy - The type (interface) of the strategy to be resolved.

strategyReference - The reference to the strategy for which we need to resolve an instance.

Returns:

The strategy instance

resolveDefaultableStrategy

public <T> T resolveDefaultableStrategy(java.lang.Class<T> strategy,
                                        java.lang.Object strategyReference,
                                        T defaultValue)

Description copied from interface: StrategySelector

Resolve strategy instances. The incoming reference might be:

• null - in which case defaultValue is returned.
• An actual instance of the strategy type - it is returned, as is
• A reference to the implementation Class - an instance is created by calling Class.newInstance() (aka, the class's no-arg ctor).
• The name of the implementation class - First the implementation's Class reference is resolved, and then an instance is created by calling Class.newInstance()

Specified by:

resolveDefaultableStrategy in interface StrategySelector

Type Parameters:

T - The type of the strategy. Used to make sure that the strategy and implementation are type compatible.

Parameters:

strategy - The type (interface) of the strategy to be resolved.

strategyReference - The reference to the strategy for which we need to resolve an instance.

defaultValue - THe default value to use if strategyReference is null

Returns:

The strategy instance

resolveDefaultableStrategy

public <T> T resolveDefaultableStrategy(java.lang.Class<T> strategy,
                                        java.lang.Object strategyReference,
                                        java.util.concurrent.Callable<T> defaultResolver)

Description copied from interface: StrategySelector

Resolve strategy instances. The incoming reference might be:

• null - in which case defaultValue is returned.
• An actual instance of the strategy type - it is returned, as is
• A reference to the implementation Class - an instance is created by calling Class.newInstance() (aka, the class's no-arg ctor).
• The name of the implementation class - First the implementation's Class reference is resolved, and then an instance is created by calling Class.newInstance()

Specified by:

resolveDefaultableStrategy in interface StrategySelector

Type Parameters:

T - The type of the strategy. Used to make sure that the strategy and implementation are type compatible.

Parameters:

strategy - The type (interface) of the strategy to be resolved.

strategyReference - The reference to the strategy for which we need to resolve an instance.

defaultResolver - A strategy for resolving the default value strategyReference resolves to null.

Returns:

The strategy instance

resolveStrategy

public <T> T resolveStrategy(java.lang.Class<T> strategy,
                             java.lang.Object strategyReference,
                             T defaultValue,
                             StrategyCreator<T> creator)

Specified by:

resolveStrategy in interface StrategySelector

resolveStrategy

public <T> T resolveStrategy(java.lang.Class<T> strategy,
                             java.lang.Object strategyReference,
                             java.util.concurrent.Callable<T> defaultResolver,
                             StrategyCreator<T> creator)

Specified by:

resolveStrategy in interface StrategySelector