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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.
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5 min readIn Adobe Experience Manager (AEM), you can include a content page in a JSP by using the <cq:include> tag. This tag allows you to include a content fragment or another page within the JSP file. To include a content page, you can specify the path to the content page as an attribute of the <cq:include> tag. This will dynamically include the content from that page within your JSP file.
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6 min readIn MongoDB, you can use the $and, $or, and $not operators to create queries with multiple conditions. These operators allow you to combine multiple conditions in a single query.The $and operator allows you to specify multiple conditions that must all be true for a document to be returned in the result set. For example, you can use the $and operator to find documents where both condition1 and condition2 are true.
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4 min readTo rearrange tags in a widget in AEM, you can do the following:Access the widget containing the tags you want to rearrange.Locate the section or area where the tags are displayed.Click and drag the tags to the desired position within the widget.Release the mouse button to drop the tags in the new position.Save your changes to ensure the tags remain rearranged in the widget.By following these steps, you can easily rearrange tags in a widget in AEM to customize the display of your content.
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9 min readIn order to implement one-to-many relationships with DynamoDB, you can use a technique called indexing. One common approach is to create a secondary index on the table that stores the "many" items, with the primary key of the "one" item as the partition key and a unique identifier for each of the "many" items as the sort key. This allows you to query the secondary index to retrieve all the related items for a given "one" item.
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7 min readIn order to set a maximum resolution for an image asset in Adobe Experience Manager (AEM), you can use the Image Presets feature. Image Presets allow you to define specific constraints for image assets, including maximum resolution.To set a maximum resolution for a dam image asset in AEM, you will first need to create a new Image Preset. Within the preset settings, you can input the desired maximum resolution dimensions for the image asset.
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3 min readIn MongoDB, you can aggregate distinct values from an array field using the $unwind operator to break down the array into individual documents, followed by the $group operator to group the distinct values together. This can be achieved by first unwinding the array field, then grouping by the distinct values using the $addToSet operator. Finally, you can project the results to achieve the desired output. By following these steps, you can effectively aggregate distinct array fields in MongoDB.