Implementing Global Object Identification
Global object identification query in GraphQL can be achieved by creating a node interface. With the help of this node interface creation, we can achieve this implementation and it will fetch the expected results with what we have passed in the global object type query. Let us discuss how to define and implement a node interface.
Defining Node interface
Before defining a node interface, we can discuss the node interface and its syntax definition along with an example.
What is Node?
A node is an interface that needs to be defined to pass it on to the global object query to retrieve the particular response from the service. The node contains any number of fields. Those fields can also be mentioned and passed on to the global object query to retrieve the information. The node must have one field at least.
Syntax:
interface Node_Name {
field_name : field_type
}
Example of Node Interface
Create a node interface with roll_number field.
interface Node {
roll_number : ID!
}
Explanation: Here, interface is a keyword to declare the Node. roll_number is the global object that needs to be passed on the global query to retrieve the response. This roll_number shouldn’t be null. ‘ ! ‘ declares non_null to the field.
Global Object Identification in GraphQL
Global Object Identification in GraphQL is a crucial concept that enables precise data retrieval from APIs by using unique identifiers. It enhances the efficiency of GraphQL schemas by allowing developers to fetch specific data easily.
By defining a node interface and implementing it in object types, developers can effectively retrieve desired information, making GraphQL a powerful tool for querying and manipulating data. In this article, we will learn about Global Object Identification in GraphQL by understanding their needs, Implementation in depth with the help of examples, and so on.
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