Liferay Workspace’s Target Platform feature and Code Upgrade Tool take a lot of manual intervention out of upgrading to Liferay Portal CE 7.1. Target Platform facilitates updating dependencies to Liferay Portal CE 7.1, and the Code Upgrade Tool helps you adapt plugins to Liferay Portal CE 7.1’s API. This tutorial explains the plugin upgrade steps.
Here are the plugin upgrade steps:
Update your Liferay Workspace to that latest version.
Update your Liferay Portal-related dependencies by setting your Target Platform to the latest version of Liferay Portal CE 7.1. (Optional)
Adapt your code to Liferay Portal CE 7.1’s API using the Upgrade Tool. The Upgrade Tool shows you where breaking changes affect your code and addresses many of them automatically.
Congratulations! Your upgraded plugin is ready to deploy to Liferay Portal CE 7.1.