apollo-stitcher

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* Apollo datasource approach to schema stitching.
* Straightforward abstraction for extracting, adding and wrapping fields prior to delegation.
* Per-request caching using Apollo Client.

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npm install graphql apollo-stitcher

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Repository: yaacovCR/apollo-stitcher

API: yaacovcr.github.io/apollo-stitcher

Demo: yaacovCR/nextjs-graphql-starter

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Extend the Stitcher class and define methods specific to your data model...

``javascript
const { Stitcher, stitch } = require('apollo-stitcher');

const wrapInsert = {
selectionSet: stitch{
affected_rows
returning {
...PreStitch
}
},
result: result =>
result && result.affected_rows ? result.returning[0] : null
};

class DbStitcher extends Stitcher {
delegateToInsertUser(args) {
return this.transform(wrapInsert).delegateTo({
operation: 'mutation',
fieldName: 'insert_user',
args: {
objects: [args]
}
});
}
}
`

...and just add the datasource to your server.

`javascript
const dataSources = () => {
return {
db: new DbStitcher({ dbSchema })
};
};
`

Now you can just do this in your resolver:

`javascript
const user = await context.dataSources.db.delegateToInsertUser({
email: lowerCaseEmail,
password: hashedPassword
});
``