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Creating Versions of Resources

Resources are automatically versioned when they are added or updated. But collections are not versioned automatically due to performance considerations. However, you can create versions of collections using the API. It is recommended that collection versions are created only for making checkpoints of the sub-tree you are working on.

Use the following code to create a version of your resource/collection:

registry.createVersion("/c1/c2");

Retrieving Versions of a Given Resource

You can list all of the versions of a given resource using the code given below. The result would be an array of String type, containing links to the different versions of the resource.

String [] versions = registry.getVersions("/c1/c2");

Restoring to an Old Version

Since the Registry comes with versioning, we can restore a resource to any of its versions. This can be done using the registry as well. In the #Retrieving Versions of a Given Resource section, we discussed how to retrieve versions for a give resource. The following line of code demonstrates we can restore back an old version of the registry instance.

registry.restoreVersion ("/c1/c2;version:2");

See also Managing Metadata to learn how to check versions using the Management Console.

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