Posts (page 21)
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5 min readIn AEM, you can restrict components on a template level by using policies. Policies allow you to define rules for what components can be added to a page based on the template being used.To restrict components on a template level, you can create a policy for that template that specifies which components are allowed or disallowed on pages created using that template. This can be done by going to the template editor in AEM and configuring the allowed components for that template.
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3 min readTo add a value to an existing value in MongoDB, you can use the $inc operator in an update operation. This operator increments the value of the specified field by the specified amount. For example, if you want to add 5 to the "count" field of a document with _id equal to 123, you can use the following update operation:db.collection.update({_id: 123}, {$inc: {count: 5}});This operation will add 5 to the existing value of the "count" field in the document with _id equal to 123.
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4 min readTo locate an index in AEM, you can go to the CRXDE Lite tool in the AEM console. Navigate to the path where the index is located within the repository. You can search for the index by its name or properties using the query feature in CRXDE Lite. Once you have located the index, you can view its configuration and make any necessary changes. Additionally, you can also access the AEM Query Builder tool to search for specific nodes or properties related to the index.
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8 min readIn MongoDB, one way to handle many-to-many relationships is to use a linking collection to create a 'junction collection'. This collection will contain documents that link the two main collections involved in the relationship. Each document in the junction collection will have references to documents in the two main collections, forming a many-to-many relationship between them.
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7 min readTo get user session from replication event in AEM, you can use the Replicator API provided by AEM. You can implement a custom ReplicationEventListener that listens for replication events and then retrieves the user session associated with the event.Within your custom ReplicationEventListener implementation, you can access the ReplicationAction object which contains information about the replication event. You can use the ReplicationAction.
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5 min readTo configure SSL on MongoDB server, you need to first create a SSL certificate and key pair using a tool like OpenSSL. Once you have the certificate and key pair, you will need to update the MongoDB configuration file to specify the path to the certificate and key files. Additionally, you will need to specify the SSL mode and PEM key file options in the configuration file.After updating the configuration file, you will need to restart the MongoDB server for the changes to take effect.
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4 min readIn AEM, you can redirect the homepage by creating a sling: mapping entry in the Apache configuration file. This mapping entry should redirect requests for the homepage to a different URL. You can also use the Redirect component in AEM to configure a redirect on the homepage. Additionally, you can use the Redirect Filter in AEM to set up a redirect for the homepage based on specific conditions.
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8 min readTo join more than 2 collections in MongoDB, you can use the aggregation framework which allows you to perform complex operations on multiple collections. You can use the $lookup stage to perform a left outer join between two collections and then use the result to join with another collection using another $lookup stage. By chaining multiple $lookup stages, you can join more than 2 collections in MongoDB.
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3 min readTo get the complete path of a page in AEM, you can use the SlingHttpServletRequest object and its getRequestURI method. This method will return the URI of the current request, which includes the complete path of the page being accessed. You can then manipulate this URI as needed to extract the specific path of the page. Additionally, you can use the ResourceResolver object to get the Resource object of the current page and then retrieve its path using the getPath method.
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9 min readWhen designing a large NoSQL database with nested data, it is important to carefully plan the structure of your documents to ensure efficient querying and indexing. One approach is to denormalize your data by embedding related documents within one another, creating a hierarchical structure. This can help reduce the number of queries needed to retrieve related data and improve performance.
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5 min readIn AEM, when creating pages, it is possible to inherit properties from a parent page using the Page Properties Inheritance feature. This feature allows properties such as title, description, and other metadata to be automatically inherited by child pages, reducing the need for manual input and ensuring consistency across the site.
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5 min readTo add a field description to a MongoDB collection, you can use the collMod command in the MongoDB shell. This command allows you to modify the properties of a collection, including adding descriptions to fields. Here's an example of how you can add a description to a field in a MongoDB collection: db.