I will look into the issue later. Could you submit a JIRA ticket to track the issue?
Here is the similar example, but its works, I am curious about the difference between them. https://github.com/apache/groovy/blob/02ac82f92760357c0eb653ed2f1fa2f0a6dd65cc/subprojects/groovy-ginq/src/spec/test/org/apache/groovy/ginq/GinqTest.groovy#L4789 Cheers, Daniel Sun On 2024/10/05 17:16:02 Per Nyfelt wrote: > Hi, I am trying to learn Ginq and are having problems with joining an > aggregation functions. > > The following example illustrates the issue: > > import java.time.LocalDate > > class Warehouse { > int id > String name > Double price > int stock > > Warehouse(int id, String name, Double price, int stock) { > this.id = id > this.name = name > this.price = price > this.stock = stock > } > } > > class Sales { > LocalDate date > int item > > Sales(LocalDate date, int item) { > this.date = date > this.item = item > } > } > > > List<Warehouse> warehouse = [ > new Warehouse(1, 'Orange', 11, 2), > new Warehouse(2, 'Apple', 6, 3), > new Warehouse(3, 'Banana', 4, 1), > new Warehouse(4, 'Mango', 29, 10) > ] > List<Sales> sales = [ > new Sales(LocalDate.of(2024, 5, 1), 1), > new Sales(LocalDate.of(2024, 5, 2), 1), > new Sales(LocalDate.of(2024, 5, 3), 3) > ] > def q = GQ { > from s in sales > join w in warehouse on w.id == s.item > select w.name, w.price > } > // so far so good, the following works: > assert [['Orange', 11.0], ['Orange', 11.0], ['Banana', 4.0]] == q.toList() > > // now try to summarize by name > def qSum = GQ { > from s in sales > join w in warehouse on w.id == s.item > groupby w.name > select w.name, sum(w.price) > } > // Fails with Exception evaluating property 'price' for groovy.lang.Tuple2, > // Reason: groovy.lang.MissingPropertyException: No such property: price > for class: Sales > assert [['Orange', 22.0], ['Banana', 4.0]] == qSum.toList() > > So for some reason ginq thinks it will find the price property in the > Sales class instead of in the Warehouse class so w.price here is not > understood. What is the right way to write it? > > Regards, > > Per > >
