The short answer is: you don’t. The longer answer is that you have to write that code yourself. GraphQL isn’t a database query language like SQL, it’s an application query language. What that means is that GraphQL won’t let you write arbitrary queries out of the box. It will only support the types of queries … Read more
You can use GraphQL Aliases to modify individual keys in the JSON response. If this is your original query query { POJO { id name } } you can introduce a GraphQL alias userName for the field name like so: query { POJO { id userName: name } } You can also use GraphQL aliases … Read more
I’ve come up with a middle-ground solution. Rather than trying to push this complexity onto GraphQL, I’m opting to just use the String type and JSON.stringifying my data before setting it on the field. So everything gets stringified, and later in my application when I need to consume this field, I JSON.parse the result to … Read more
The fault with my query was that I didn’t download the new schema. You can download the schema by using: apollo schema:download –endpoint=http://localhost:8080/graphql schema.json replace http://localhost:8080/graphql with your server endpoint You can see more at https://www.apollographql.com/docs/ios/downloading-schema/
GraphQL is database agnostic, so you can use whatever you normally use to interact with the database, and use the query or mutation’s resolve method to call a function you’ve defined that will get/add something to the database. Without Relay Here is an example of a mutation using the promise-based Knex SQL query builder, first … Read more
Post request needs to manage headers info. Using Http client – Content-Type: application/json Using Postman client – Content-Type: application/graphql but request body looks like string {“query”:”mutation{update(id:1,x1:\”zazaz\”,x2:\”zazaz\”……){id x1 x2}}”}
There are three ways of doing this First way Update the client parameter like this it will omit the unwanted fields in graphql. apollo.create({ link: http, cache: new InMemoryCache({ addTypename: false }) }); Second Way By using the omit-deep package and use it as a middleware const cleanTypeName = new ApolloLink((operation, forward) => { if … Read more
Connections More powerful and flexible than simple lists. Support pagination (forward and back), with cursors. Fine-grained mutation support (eg. RANGE_ADD, RANGE_DELETE, NODE_DELETE, as described in the guide). Requires a first or last argument in order to limit the size of the result set. Has an edges field that provides a place to locate per-edge, edge-specific … Read more
Over-fetching is fetching too much data, meaning there is data in the response you don’t use. Under-fetching is not having enough data with a call to an endpoint, forcing you to call a second endpoint. In both cases, they are performance issues: you either use more bandwidth than ideal, or you are making more HTTP … Read more
Short Conventionally: Query — for querying data (SELECT operations) Mutation — for creating new and updating/deleting existing data (INSERT, UPDATE, DELETE) Detailed Technically any GraphQL query could be implemented to cause a data write. But there is a convention that any operations that cause writes should be sent explicitly via a mutation. Besides the difference … Read more