OptimizerFactory.HiLoOptimizer (Hibernate Core 3.3.1.GA API)

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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

public static class OptimizerFactory.HiLoOptimizer
extends OptimizerFactory.OptimizerSupport
extends OptimizerFactory.OptimizerSupport

Optimizer which applies a 'hilo' algorithm in memory to achieve optimization.

Field Summary

Fields inherited from class org.hibernate.id.enhanced.OptimizerFactory.OptimizerSupport
`incrementSize, returnClass`

Constructor Summary
`OptimizerFactory.HiLoOptimizer(java.lang.Class returnClass, int incrementSize)`

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

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(java.lang.Class returnClass,
                                      int incrementSize)

Method Detail

generate

public java.io.Serializable generate(AccessCallback callback)

Generate an identifier value accounting for this specific optimization.

Parameters:: callback - Callback to access the underlying value source.
Returns:: The generated identifier value.

getLastSourceValue

public long getLastSourceValue()

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.

applyIncrementSizeToSourceValues

public boolean applyIncrementSizeToSourceValues()

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.

getLastValue

public long getLastValue()

Getter for property 'lastValue'.

Returns:: Value for property 'lastValue'.

getHiValue

public long getHiValue()

Getter for property 'hiValue'.

Returns:: Value for property 'hiValue'.