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Date: Thu, 24 Sep 2009 14:34:24 -0700 (PDT)
From: "Matthew T. Adams (JIRA)" <jira@apache.org>
To: jdo-dev@db.apache.org
Subject: [jira] Updated: (JDO-638) Add annotations for instance callbacks
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     [ https://issues.apache.org/jira/browse/JDO-638?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matthew T. Adams updated JDO-638:
---------------------------------

    Attachment: InstanceCallbackAnnotations-3.patch

The following proposes the ordering of annotated methods.  I've added an order property to each of the annotations with javadoc as follows:

	/**
	 * The order of execution of this method relative to other annotated
	 * callback methods. A lower order value means that the annotated method has
	 * a higher precedence among annotated methods, and a higher order, a lower
	 * precedence. Order values need not be contiguous among annotated methods.
	 * Methods that are implementations of the corresponding callback interface
	 * method are always called first. The order value {@link Integer#MAX_VALUE}
	 * , the default, signifies that the order is undefined among annotated
	 * methods. If other annotated methods define an order, those methods will
	 * be called before annotated methods with an undefined order. If other
	 * annotated methods define equal order values, then methods annotated with
	 * lower order values will be called before them, the methods with equal
	 * order values will be called in an undefined order, and then any methods
	 * with higher order values will be called after the methods with equal
	 * order values have been called. If a method that represents an
	 * implementation of the corresponding interface method carries this
	 * annotation, the annotation and its order are ignored, and the interface
	 * method is called first. If a subclass annotates a method with the same
	 * order as an annotated method in its superclass hierarchy, then the
	 * subclass's method is called first, otherwise the order values among all
	 * annotated methods in the class and its superclass hierarchy determine
	 * call order.
	 */
	int order() default Integer.MAX_VALUE;

Thoughts?

> Add annotations for instance callbacks
> --------------------------------------
>
>                 Key: JDO-638
>                 URL: https://issues.apache.org/jira/browse/JDO-638
>             Project: JDO
>          Issue Type: Improvement
>          Components: api2
>            Reporter: Matthew T. Adams
>            Priority: Minor
>         Attachments: InstanceCallbackAnnotations-1.0.patch, InstanceCallbackAnnotations-2.patch, InstanceCallbackAnnotations-3.patch
>
>
> The current JDO annotations in javax.jdo.annotations do not include annotations equivalent to instance callbacks.  We should add method annotations for each method in javax.jdo.InstanceCallback.

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