本文整理匯總了TypeScript中graphql-relay.nodeDefinitions函數的典型用法代碼示例。如果您正苦於以下問題：TypeScript nodeDefinitions函數的具體用法？TypeScript nodeDefinitions怎麽用？TypeScript nodeDefinitions使用的例子？那麽, 這裏精選的函數代碼示例或許可以為您提供幫助。
在下文中一共展示了nodeDefinitions函數的3個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的TypeScript代碼示例。
示例1: catch
import * as GQL from 'graphql'
import * as db from '../models'
import * as R from 'graphql-relay'
const nodeDefinitions = R.nodeDefinitions(globalId => {
const modelTypes = ['User', 'Message']
const idInfo = R.fromGlobalId(globalId)
const typeIndex = modelTypes.indexOf(idInfo.type)
if (typeIndex !== -1) { return db[modelTypes[typeIndex]].get(idInfo.id).run() }
return null
})
/**********************************************************************/
/* MODEL DEFINITIONS */
/**********************************************************************/
//============================== MESSAGE ================================//
const MessageType = new GQL.GraphQLObjectType({
name: 'Message',
isTypeOf: (obj): boolean => {
try { new db.Message(obj).validate(); return true } catch (e) { return false }
},
fields: (): GQL.GraphQLFieldConfigMap => ({
id: R.globalIdField('Message'),
userId: { type: new GQL.GraphQLNonNull(GQL.GraphQLString) },
createdAt: { type: GQL.GraphQLString },
body: { type: GQL.GraphQLString },
user: {
type: UserType,
resolve: async (msg, args): Promise<any> => await db.User.get(msg.userId).run()
}
}),示例2: GraphQLObjectType
}
}),
});
// Object Identification
// nodeDefinitions returns the Node interface that objects can implement, and returns the node root field to include on the query type.
// To implement this, it takes a function to resolve an ID to an object, and to determine the type of a given object.
const resolver: GraphQLTypeResolver<any, any> = () => {
return new GraphQLObjectType({
name: "T",
fields: {},
});
};
const idFetcher = (id: string, context: number, info: GraphQLResolveInfo) => {
info.fieldName = "f";
};
const nodeDef = nodeDefinitions<number>(idFetcher, resolver);
const fieldConfig: GraphQLFieldConfig<any, any> = nodeDef.nodeField;
const interfaceType: GraphQLInterfaceType = nodeDef.nodeInterface;
// toGlobalId takes a type name and an ID specific to that type name, and returns a "global ID" that is unique among all types.
toGlobalId("t", "i").toLowerCase();
// fromGlobalId takes the "global ID" created by toGlobalID, and returns the type name and ID used to create it.
const fgi = fromGlobalId("gid");
fgi.id.toLowerCase();
fgi.type.toUpperCase();
// globalIdField creates the configuration for an id field on a node.
const idFetcher2 = (object: any, context: any, info: GraphQLResolveInfo) => {
return "";
};
const gif: GraphQLFieldConfig<any, any> = globalIdField("t", idFetcher2);
// pluralIdentifyingRootField creates a field that accepts a list of non-ID identifiers (like a username) and maps them to their corresponding objects.
const input: GraphQLInputType = GraphQLString;示例3: if
} else if (global.type === 'User') {
return await context.db.collection('users').find({ _id: new ObjectID(global.id) }).limit(1).next();
}
return null;
}
export let nodeDefs: GraphQLNodeDefinitions = nodeDefinitions(
idFetcher,
(obj) => {
if (obj instanceof Store) {
return storeType;
} else if (obj.cross) {
return seedType;
} else if (obj.email) {
return userType;
}
return null;
}
);
userType = new GraphQLObjectType(new UserTypeConfig().getConfig());
export let userConnection: GraphQLConnectionDefinitions = connectionDefinitions({
name: 'user',
nodeType: userType
});