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When to use the in filter in GraphQL?
The in filter is supported for all data types such as string, enum, Int, Int64, Float, and DateTime. For example, let’s say that your schema defines a State type that has the @id directive applied to the code field: Using the in keyword, you can query for a list of states that have the postal code WA or VA using the following query:
How to query a list of objects in GraphQL?
You can query a list of objects using GraphQL. For example, the following query fetches the title , text and and datePublished for all posts: query { queryPost { id title text datePublished } }
How does a product query work in Magento?
Use the FilterRangeTypeInput object to construct a filter that returns products that fall within a range of prices or dates. Magento’s GraphQL implementation of pagination uses offsets so that it operates in the same manner as REST and SOAP API requests.
Which is the best method for pagination in GraphQL?
Limit-Offset: Request a specific chunk of the list by providing the indices of the items to be retrieved (in fact, you’re mostly providing the start index (offset) as well as a count of items to be retrieved (limit)). Cursor-based: This pagination model is a bit more advanced. Every element in the list is associated with a unique ID (the cursor).
What do you need to know about GraphQL performance?
GraphQL performance defined GraphQL is a simple query language with specification and reference implementation for JavaScript and Node.js. GraphQL API abstract from the database access and works on top Node.js HTTP API and Express.js Server-side layers with a different performance focus
How are queries generated for a GraphQL type?
Queries generated for a GraphQL type allow you to generate a single list of objects for a type. Fetch the title, text and datePublished for a post with id 0x1. Fetching nested linked objects, while using get queries is also easy. For example, this is how you would fetch the authors for a post and their friends.
How does GraphQL prevent database over fetching?
Libraries like GraphQL-Query-Mapper will prevent from problem of server-side database over-fetching by providing a list of the fields that were requested in the client-side query. Developers can use them to perform targeted queries against their database and REST endpoints.