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Bug 365781

Summary:	API Baseline Tools- detect plugin/feature requires service segment bump
Product:	[Eclipse Project] PDE	Reporter:	Eric Peters <ericdp>
Component:	API Tools	Assignee:	PDE API Tools Inbox <pde-apitools-inbox>
Status:	NEW ---	QA Contact:
Severity:	enhancement
Priority:	P3	CC:	curtis.windatt.public, daniel_megert, Michael_Rennie
Version:	3.4
Target Milestone:	---
Hardware:	PC
OS:	Windows XP
Whiteboard:

Description Eric Peters

2011-12-06 12:54:51 EST

Build Identifier: 20110916-0149

Here's the use case for why this is important and should be flagged.

A project has development happening in two parallel streams, one for release A, and the other for release B. The project team plans to ship release A and then later ship release B. Plug-in X exists in both streams and its version in its manifest is 1.2.3.qualifier. Build tools fill in a qualifier based on the time and date of the build after a change has been delivered. So if a change is delivered on December 13th, 2011, the version number would end up being something like 1.2.3.v201112131045. If the contents of the plug-in don't change, its version number doesn't change even though there may be more builds.

Now suppose a change gets delivered to stream B on December 13th. The version number of plug-in X is then 1.2.3.v201112131045. If a similar change gets backported to stream A and a build happens on stream A on December 14th, the version number of plug-in X in stream A becomes something like 1.2.3.v201112140826. No further changes get delivered to X in either stream.

Now the project team ships release A. In this release, plug-in X has the version number 1.2.3.v201112140826. Months later, the project team ships release B. In this release, plug-in X has the version number 1.2.3.v201112131045, which is lower than the version number in release A. Now, customers who first install release A and then upgrade to release B do not get the correct version of plug-in X.

Reproducible: Always