程序包 org.hibernate.boot.registry.selector.internal

类 StrategySelectorImpl

java.lang.Object

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

所有已实现的接口:

Serializable, StrategySelector, Service

public class StrategySelectorImpl
extends Object
implements StrategySelector

Standard implementation of the StrategySelector contract.

作者:

Steve Ebersole

另请参阅:

序列化表格

字段概要

字段

修饰符和类型	字段	说明
static StrategyCreator	STANDARD_STRATEGY_CREATOR

构造器概要

构造器

构造器	说明
StrategySelectorImpl(ClassLoaderService classLoaderService)	Constructs a StrategySelectorImpl using the given class loader service.

方法概要

修饰符和类型	方法	说明
Collection	getRegisteredStrategyImplementors(Class strategy)	Retrieve all of the registered implementors of the given strategy.
<T> void	registerStrategyImplementor(Class<T> strategy, String name, Class<? extends T> implementation)	Registers a named implementor of a particular strategy contract.
<T> T	resolveDefaultableStrategy(Class<T> strategy, Object strategyReference, Callable<T> defaultResolver)	Resolve strategy instances.
<T> T	resolveDefaultableStrategy(Class<T> strategy, Object strategyReference, T defaultValue)	Resolve strategy instances.
<T> T	resolveStrategy(Class<T> strategy, Object strategyReference)	Resolve strategy instances.
<T> T	resolveStrategy(Class<T> strategy, Object strategyReference, Callable<T> defaultResolver, StrategyCreator<T> creator)
<T> T	resolveStrategy(Class<T> strategy, Object strategyReference, T defaultValue, StrategyCreator<T> creator)
<T> Class<? extends T>	selectStrategyImplementor(Class<T> strategy, String name)	Locate the named strategy implementation.
<T> void	unRegisterStrategyImplementor(Class<T> strategy, Class<? extends T> implementation)	Un-registers a named implementor of a particular strategy contract.

从类继承的方法 java.lang.Object

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

字段详细资料

STANDARD_STRATEGY_CREATOR

public static final StrategyCreator STANDARD_STRATEGY_CREATOR

构造器详细资料

StrategySelectorImpl

public StrategySelectorImpl(ClassLoaderService classLoaderService)

Constructs a StrategySelectorImpl using the given class loader service.

参数:

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

方法详细资料

registerStrategyImplementor

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

从接口复制的说明: StrategySelector

Registers a named implementor of a particular strategy contract.

指定者:

registerStrategyImplementor 在接口中 StrategySelector

类型参数:

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

参数:

strategy - The strategy contract.

name - The registration name

implementation - The implementation Class

unRegisterStrategyImplementor

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

从接口复制的说明: 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.

指定者:

unRegisterStrategyImplementor 在接口中 StrategySelector

类型参数:

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

参数:

strategy - The strategy contract.

implementation - The implementation Class

selectStrategyImplementor

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

从接口复制的说明: StrategySelector

Locate the named strategy implementation.

指定者:

selectStrategyImplementor 在接口中 StrategySelector

类型参数:

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

参数:

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.

返回:

The named strategy implementation class.

resolveStrategy

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

从接口复制的说明: 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.

指定者:

resolveStrategy 在接口中 StrategySelector

类型参数:

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

参数:

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

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

返回:

The strategy instance

resolveDefaultableStrategy

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

从接口复制的说明: 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()

指定者:

resolveDefaultableStrategy 在接口中 StrategySelector

类型参数:

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

参数:

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

返回:

The strategy instance

resolveDefaultableStrategy

public <T> T resolveDefaultableStrategy(Class<T> strategy,
                                        Object strategyReference,
                                        Callable<T> defaultResolver)

从接口复制的说明: 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()

指定者:

resolveDefaultableStrategy 在接口中 StrategySelector

类型参数:

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

参数:

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.

返回:

The strategy instance

resolveStrategy

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

指定者:

resolveStrategy 在接口中 StrategySelector

getRegisteredStrategyImplementors

public Collection getRegisteredStrategyImplementors(Class strategy)

从接口复制的说明: StrategySelector

Retrieve all of the registered implementors of the given strategy. Useful to allow defaulting the choice to the single registered implementor when only one is registered

指定者:

getRegisteredStrategyImplementors 在接口中 StrategySelector

返回:

The implementors. Should never return null

resolveStrategy

public <T> T resolveStrategy(Class<T> strategy,
                             Object strategyReference,
                             Callable<T> defaultResolver,
                             StrategyCreator<T> creator)

指定者:

resolveStrategy 在接口中 StrategySelector