Ratstail91/sineQL
1
0
Fork 0
mirror of https://github.com/Ratstail91/sineQL.git synced 2025-11-29 02:34:28 +11:00
Code Issues Packages Projects Releases Wiki Activity

It's a little buggy, but matching is working

Browse Source
This commit is contained in:
Kayne Ruse
2020-09-06 01:54:31 +10:00
parent d52b63bcf4
commit 5183f89c91
3 changed files with 76 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
server/handler.js
View File

@@ -2,7 +2,7 @@ const database = require('./database.js');
/* DOCS: The handler module connects the database to simpleQL.
* this will be user-implemented, but for now uses a fake database provided in database.js
* The 'scalars' will be objects containing a name and the type for each scalar field requested by a query.
* The 'scalars' will be objects containing a name and theh type for each scalar field requested by a query.
* This can be used in several ways...
*
* The handlers should only handle scalar fields - compound fields will be queried separately by simpleQL.
@@ -11,19 +11,26 @@ const database = require('./database.js');
//the handler routines
const handler = {
Book: (parent, scalars) => {
//takes an object which is the result of the parent query, if there is one { typeName: 'Author', scalars: [scalars], context: the parent object }
//takes an array of scalar types as objects: { typeName: 'String', name: 'title' }
//takes an object which is the result of the parent query, if there is one { typeName: 'Author', scalars: [scalars], context: the parent object, match: I am being matched }
//takes an array of scalar types as objects: { typeName: 'String', name: 'title', match: filter }
//must return an array of objects containing the results
let books = database.books;
//if this is a sub-query, use the parent to narrow the search
//if this is a sub-query of Author, use the parent to narrow the search
if (parent && parent.typeName == 'Author') {
//filter based on parent object
books = books.filter(b => b.author.name == parent.context.name);
}
//return all books
//if this query has a matched scalar, filter by that match
books = books.filter(b => {
return scalars.every(s => {
return !s.match || b[s.name] === s.match; //other filter methods, such as ranges of numbers, can also be implemented
});
});
//return all books after filtering
const fields = scalars.map(s => s.name);
return books.map(b => {
const ret = {};
@@ -43,19 +50,19 @@ const handler = {
Author: (parent, scalars) => {
let authors = database.authors;
//if this is a sub-query, use the parent to find the author
//if this is a sub-query of Book, use the parent to find the author
if (parent && parent.typeName == 'Book') {
const author = authors.find(a => a.books.filter(b => b.title == parent.context.title).length > 0);
//ensure only the named scalars are returned (hack)
const ret = {};
if (scalars.filter(s => s.name == 'name').length > 0) {
ret.name = author.name;
}
return [ret]; //must return an array
//filter based on parent object
authors = authors.filter(a => a.books.some(b => b.title === parent.context.title));
}
//if this query has a matched scalar, filter by that match
authors = authors.filter(a => {
return scalars.every(s => {
return !s.match || a[s.name] === s.match; //other filter methods, such as ranges of numbers, can also be implemented
});
});
//return all authors
const fields = scalars.map(s => s.name);
return authors.map(a => {