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I may be missing something extremely obvious, but I need some clarification regardless. I am about to begin development using maven and archiva. I added both servers + settings to settings.xml, and distributionManagement tags to the maven POM which I want to deploy.
I put references to both my internal snapshot repo, and my internal release repo in the POM. is there a specific maven command or option, which specifies to deploy as a SNAPSHOT, and NOT to both repos? Or if I do deploy, will it automatically push one copy to each repo?
Can someone clarify this?´
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By definition, snapshots are mutable, releases are immutable. This is why Nexus makes you store them separately because usually you don't care if you lose snapshots, but you will care if you lose releases. It makes snapshot cleanup much easier to deal with that way.
Typically, a snapshot represents a set of component versions that are known to work together. In most cases, snapshots include all of the components in an application. A snapshot is typically created when a successful deployment runs in an uncontrolled environment, where there are no approval gates.
Rule #3 Never release using the Time-Stamped snapshot The release plugin will still fail if you do this because it correctly understands you have SNAPSHOT dependencies. The plugin has a flag to allow bypass this check and people unfortunately use it far too often.
A Maven snapshot is a special version of a Maven package that refers to the latest production branch code. It is a development version that precedes the final release version. You can identify a snapshot version of a Maven package by the suffix SNAPSHOT that is appended to the package version.
If your project.version contains SNAPSHOT (f.e., 1.2-SNAPSHOT) and you execute mvn deploy, artifacts will be deployed to your snapshot repository. If it doesn't (f.e., 1.2) - they will be deployed to your release repository.
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You can execute mvn deploy.
If your POM version contains SNAPSHOT as suffix, it will deploy into the repository configured under distributionManagement.snapshotRepository.
If your POM doesn't contain SNAPSHOT suffix, it will deploy into the repository configured under distributionManagement.repository.
However, I do recommend you to use maven-release-plugin to manage versioning and deployment. By running mvn -B release:clean release:prepare release:perform, in resume:
SNAPSHOT is removed from the version (e.g. 2.1-SNAPSHOT -> 2.1);2.1);SNAPSHOT is added (e.g. 2.2-SNAPSHOT).
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