// Delete a record with id asynchronously
public void delete(String id, SuccessCallback<Boolean> callback);

// Create a new record with the given data asynchronously
public void create(Map data, SuccessCallback<Boolean> callback);

// Edit an existing record with given data asynchronously.
public void edit(String id, Map data, SuccessCallback<Boolean> callback);

// Count the number of records provided by the web service.
public void count(SuccessCallback<Integer> callback);

// Find records provided by the web service
public void find(Query query, SuccessCallback<RowSet> callback)

package com.codename1.demos.sakila;

// redacted imports ...

import com.codename1.ws.RESTfulWebServiceClient;
import com.codename1.ws.RESTfulWebServiceClient.Query;
import com.codename1.ws.RESTfulWebServiceClient.RowSet;


/**
 * This file was generated by <a href="https://www.codenameone.com/">Codename One</a> for the purpose
 * of building native mobile applications using Java.
 */
public class SakilaDemo {

    // redacted member variables ...

    String customerEndpoint = "http://localhost:8080/SakilaRESTServer/webresources/com.codename1.demos.sakilarestserver.customer"; (1)

    // Database Connection Properties
    RESTfulWebServiceClient client;


    // redacted utility methods ...

    // Lifecycle Methods -------------------------------------------------------
    public void init(Object context) {
        theme = UIManager.initFirstTheme("/theme");

        // Enable Toolbar on all Forms by default
        Toolbar.setGlobalToolbar(true);

        // Pro only feature, uncomment if you have a pro subscription
        // Log.bindCrashProtection(true);

        client = new RESTfulWebServiceClient(customerEndpoint); (2)
    }

    public void start() {
        if(current != null){
            current.show();
            return;
        }
        Form hi = new Form("Contacts");
        hi.setLayout(new BorderLayout());

        hi.show();
        Display.getInstance().callSerially(()->{
            loadContacts(rowset->{ (3)

                hi.addComponent(BorderLayout.CENTER, createContactsList(hi, rowset));
            });
        });
    }

    public void stop() {
        // redacted ...
    }


    public void destroy() {
    }

    // Web Service Methods -----------------------------------------------------

    /**
     * Loads all of the contacts from the database asynchronously.  On complete
     * the callback will be called with the resulting rowset as a parameter, or
     * null if there was an error.
     * @param callback Callback to handle the received rowset.
     */
    private void loadContacts(SuccessCallback<RowSet> callback) { (4)
        Query q = new Query();  (5)
        client.find(q, callback);  (6)

    }

    /**
     * Convert a record from the "contact" table into a Contact object.
     * @param record A record from the "contact" table.
     * @return A Contact object
     */
    private static Contact createContact(Map m) {  (7)
        Result record = Result.fromContent(m);
        Contact c = new Contact();
        c.setFirstName(record.getAsString("firstName"));
        c.setFamilyName(record.getAsString("lastName"));
        c.setPrimaryEmail(record.getAsString("email"));
        return c;
    }

    /**
     * Convert a rowset (from the contact table) into an array of Contact
     * objects
     * @param rowset A rowset from the contact table.
     * @return An array of Contact records.
     */
    private static Contact[] rowsetToContactsArray(RowSet rowset) {  (8)
        List<Contact> lst = new ArrayList<Contact>();
        for (Map record : rowset) {
            lst.add(createContact(record));
        }
        return lst.toArray(new Contact[lst.size()]);
    }

    // View Factory Methods ----------------------------------------------------

    /**
     * Creates a list of contacts included in the specified rowset.
     * @param parentForm The parent form
     * @param rowset The rowset to encapsulate (from the "contact" table)
     * @return A container to be added to the form.
     */
    private Container createContactsList(Form parentForm, RowSet rowset) {
        Contact[] contacts = rowsetToContactsArray(rowset);

        // redacted image creation stuff...

        final Container contactsDemo = new Container(BoxLayout.y());
        contactsDemo.setScrollableY(true);

        for(Contact c : contacts) {
            Container row = createContactRow(c, contactsDemo);
            if (row != null) {
                contactsDemo.add(row);
            }
        }
        contactsDemo.revalidate();
        finishedLoading = true;

        RowSet[] lastSet = new RowSet[]{rowset};
        InfiniteScrollAdapter.createInfiniteScroll(contactsDemo, () -> {
            Query nextQuery = lastSet[0].getNextQuery();  (9)
            if (nextQuery.getSkip() > lastSet[0].getSkip()) {

                client.find(nextQuery, newResult -> { (10)
                    if (newResult == null) {
                        return;
                    }
                    List<Component> toAdd = new ArrayList<Component>();
                    for (Map row : newResult) {
                        Container cntRow = createContactRow(createContact(row), contactsDemo);
                        if (cntRow != null) {
                            toAdd.add(cntRow);
                        }
                    }
                    InfiniteScrollAdapter.addMoreComponents(contactsDemo, toAdd.toArray(new Component[toAdd.size()]), true);
                    lastSet[0] = newResult;
                    contactsDemo.revalidate();
                });
            }
        });

        return contactsDemo;
    }

    /**
     * Creates a single row for the contact list that encapsulates the provided
     * contact.
     * @param c The contact to represent with this row.
     * @param parent The parent container to which the row is to be added.  This method doesn't actually add the
     * row to the parent, but it does need to reference it for some of the listeners that are added to the row.  The caller
     * should add the resulting row to the parent after calling this method.
     * @return A container encapsulating the row, or null if the contact didn't have a name.
     */
    private Container createContactRow(Contact c, Container parent) {
        // redacted same 'ol same 'ol
    }

}