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Difference between revisions of "EclipseLink/UserGuide/JPA/Basic JPA Development/Configuration/JPA/Defaults"
< EclipseLink | UserGuide | JPA | Basic JPA Development | Configuration
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| + | Each annotation has a default value (consult the JPA specification for defaults). A persistence engine defines defaults that apply to the majority of applications. You only need to supply values when you want to override the default value. Therefore, having to supply a configuration value is not a requirement, but the exception to the rule. This is known as ''configuration by exception''. | ||
| + | '''Note''': You should be familiar with the defaults to be able to change the behavior when necessary. | ||
{{EclipseLink_JPA | {{EclipseLink_JPA | ||
Revision as of 10:48, 15 June 2010
Defaults
Each annotation has a default value (consult the JPA specification for defaults). A persistence engine defines defaults that apply to the majority of applications. You only need to supply values when you want to override the default value. Therefore, having to supply a configuration value is not a requirement, but the exception to the rule. This is known as configuration by exception.
Note: You should be familiar with the defaults to be able to change the behavior when necessary.
