CODEWITHSUNDEEP
lucenesitecore
webber
webber

Reputation: 1886

Sitecore: Programmatically trigger reindexing of related content

In my sitecore instance, I have content for 2 templates, Product and Product Category. The products have a multilist that link to the Product Category as lookups. The Products also have an indexing computed field setup that precomputes some data based on selected Product Categories. So when a user changes a Product, Sitecore's indexing strategy indexes the Product with the computed field.

My issue is, when a user changes the data in the Product Category, I want Sitecore to reindex all of the related products. I'm not sure how to do this. I do not see any hook where I could detect that a Product Category is being indexed, so I could programmatically trigger an index to products

Upvotes: 2

Views: 1780

Answers (3)

Gatogordo
Gatogordo

Reputation: 2635

You could achieve using the indexing.getDependencies pipeline. Add a processor to it - your custom class should derive from Sitecore.ContentSearch.Pipelines.GetDependencies.BaseProcessor and override Process(GetDependenciesArgs context).

In this function you can get your IndexedItem and add, based on this information, other items to the Dependencies. These dependencies will be indexed as well. Benefit of this way of working is that the dependent items will be indexed in the same job, instead of calling new jobs to update them.

Just be aware of the performance hit this could cause if badly written as this code will be called on all indexes. Get out of the function as soon as you can if not applicable.

Some known issues about this pipeline can be found on the kb.

Upvotes: 4

Anton
Anton

Reputation: 9961

You could add or change one of existing index update strategies. (configuration\sitecore\contentSearch\indexConfigurations\indexUpdateStrategies configuration node)

As example you could take

Sitecore.ContentSearch.Maintenance.Strategies.SynchronousStrategy

One thing, you need to change 

public void Run(EventArgs args, bool rebuildDescendants)

method. args contains changed item reference. All that you need, trigger update of index for related items.

After having custom update strategy you should add it to your index, strategies configuration node.

Upvotes: 0

Adrian Iorgu
Adrian Iorgu

Reputation: 611

One way would be to add a custom OnItemSave handler which will check if the template of the changed item has the ProductCategory template, and will problematically trigger the index update.

To only reindex the changed items, you can pickup the related Products and register them in the HistoryEngine by using the HistoryEngine.RegisterItem method:

Sitecore.Context.Database.Engines.HistoryEngine.RegisterItemSaved(myItem, new ItemChanges(myItem));

Some useful instructions how to create OnItemSave handler can be found here: https://naveedahmad.co.uk/2011/11/02/sitecore-extending-onitemsave-handler/

Upvotes: 1

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