How to identify if a Component is published or not in a child Publication using the Core Service

Question

We have a scenario where we will get an Item Id of a particular Component from its parent level. We basically want to know whether that Component is published (in a child Publication), and if it is, we want to republish it.

We are getting these Components (the parent URIs) from UsingItemsFilterData, and we observed that the Item XML contains an IsPublished attribute, and its value is always False (correct as this item is from the parent level and it cannot be published on that level). But this particular Component is published in a child Publication.

So using the parent level Component URI, we need to find out if that particular Component is published or not on a lower BluePrinted level.

We are using SDL Tridion 2011 SP1 and a .Net client application using Core Services.

Answer 1

We know it's possible, because the UI does it ("Published To" tab on the Where Used view).

You can use client.GetListPublishInfo(string itemId) to get this list.

Something along these lines:

foreach (var p in client.GetListPublishInfo("tcm:89-16029"))
{
    Console.Write("Item published to target {0} with template {1} on {2} from publication {3}.",
                               p.PublicationTarget.Title, p.RenderedWith.Title,
                               p.PublishedAt.ToShortDateString(), p.Repository.Title);
}

Answer 2

You need to make sure that the Component is viewed in the context of the Publication you expect it to be published to.

You can do this using the tip in Bart's comment, or simply swap the Publication ID part of the TCM URI and re-fetch the Component: e.g. tcm:14-999-16, means the Component is in context of Publication 14, but if you're publishing it from, say, Publication 15, just do a string replace to make it tcm:15-999-16.

Answer 3

Our goal is to publish only previously published items in all publications.

var pubData = new PublishInstructionData()
{
    ResolveInstruction = new ResolveInstructionData() { 
        IncludeChildPublications = true, 
        IncludeComponentLinks = true, 
        Purpose = ResolvePurpose.RePublish
    },
    RenderInstruction = new RenderInstructionData()
};

try
{
    //ItemsToBePublished is a list of item ids which we need to publish..
    if (ItemsToBePublished.Any() && PublishingTargets.Any())
        CoreService.Publish(ItemsToBePublished.ToArray(), pubData, PublishingTargets, PublishPriority.Low, null);
}
catch (Exception ex)
{
    //Exceptions handling goes here..
}

Answer 4

Apart from Bart's comment, I would like to share some more information:

If you are accessing the Component on a specific Publication and now you want to find whether that Component is published

• To a specific target, use

  • IsPublished(itemId, publicationTargetId, isPublishedInContext)

    Here set isPublishedInContext as True

• To any target, use
  • IsPublishedInContext