tg-knex-query-resolver/combine-queries.js

TeselaGen's Knex based query resolver

module.exports = function combineQueries(qry1, qry2, joinOperator, opts){
    if(qry1.__objectType !== 'query') throw new Error("First query is not a query type.");
    if(qry2.__objectType !== 'query') throw new Error("Second query is not a query type.");
    if(qry1.entity != qry2.entity) throw new Error("Queries are for different entities " + qry1.entity + " and " + qry2.entity);

    if(joinOperator !== 'or') joinOperator = 'and';

    var combinedFilters = 
    {
            type: "group",
            operator: joinOperator,
            filters: [ ]
    };
    
    combinedFilters.filters = qry1.filters.concat(qry2.filters);
    
    qry1.filters = [combinedFilters];

    return qry1;
}