@tpluscode/sparql-builder/lib/partials/ORDER.js

Simple JS library to build SPARQL queries

import { sparql } from '@tpluscode/rdf-string';
function addOrder(builder) {
    return (variable, desc) => {
        const thenBuilder = {
            ...builder,
            orderConditions: [
                ...builder.orderConditions, {
                    variable,
                    desc,
                }
            ],
        };
        return {
            ...thenBuilder,
            THEN: {
                BY: addOrder(thenBuilder),
            },
        };
    };
}
export default () => ({
    orderConditions: [],
    ORDER() {
        return {
            BY: addOrder(this),
        };
    },
    orderClause() {
        if (this.orderConditions.some(Boolean)) {
            return this.orderConditions.reduce((result, condition) => {
                if (condition.desc) {
                    return sparql `${result} desc(${condition.variable})`;
                }
                return sparql `${result} ${condition.variable}`;
            }, sparql `ORDER BY`);
        }
        return sparql ``;
    },
});