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OptimizerFactory.HiLoOptimizer (Hibernate API Documentation) - Hibernate 3.2.3 正式版 API 英文文档

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org.hibernate.id.enhanced
Class OptimizerFactory.HiLoOptimizer

java.lang.Object
  org.hibernate.id.enhanced.OptimizerFactory.OptimizerSupport
      org.hibernate.id.enhanced.OptimizerFactory.HiLoOptimizer

All Implemented Interfaces:

Optimizer

Enclosing class:

OptimizerFactory

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public static class OptimizerFactory.HiLoOptimizer

extends OptimizerFactory.OptimizerSupport

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Field Summary

 

Fields inherited from class org.hibernate.id.enhanced.OptimizerFactory.OptimizerSupport

incrementSize, returnClass

 

Constructor Summary

OptimizerFactory.HiLoOptimizer(Class returnClass, int incrementSize)

 

Method Summary
boolean	applyIncrementSizeToSourceValues()           Are increments to be applied to the values stored in the underlying value source?
Serializable	generate(AccessCallback callback)           Generate an identifier value accounting for this specific optimization.
long	getHiValue()
long	getLastSourceValue()           A common means to access the last value obtained from the underlying source.
long	getLastValue()

 

Methods inherited from class org.hibernate.id.enhanced.OptimizerFactory.OptimizerSupport

getIncrementSize, getReturnClass, make

 

Methods inherited from class java.lang.Object

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

 

Constructor Detail

OptimizerFactory.HiLoOptimizer

public OptimizerFactory.HiLoOptimizer(Class returnClass,
                                      int incrementSize)

Method Detail

generate

public Serializable generate(AccessCallback callback)

Description copied from interface: Optimizer

Generate an identifier value accounting for this specific optimization.

Parameters:

callback - Callback to access the underlying value source.

Returns:

The generated identifier value.

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getLastSourceValue

public long getLastSourceValue()

Description copied from interface: Optimizer

A common means to access the last value obtained from the underlying source. This is intended for testing purposes, since accessing the unerlying database source directly is much more difficult.

Returns:

The last value we obtained from the underlying source; -1 indicates we have not yet consulted with the source.

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applyIncrementSizeToSourceValues

public boolean applyIncrementSizeToSourceValues()

Description copied from interface: Optimizer

Are increments to be applied to the values stored in the underlying value source?

Returns:

True if the values in the source are to be incremented according to the defined increment size; false otherwise, in which case the increment is totally an in memory construct.

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getLastValue

public long getLastValue()

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getHiValue

public long getHiValue()

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