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reinder42/ListResource.java

Last active May 25, 2023 09:26
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  1. reinder42 revised this gist May 25, 2023. No changes.
  2. reinder42 created this gist May 25, 2023.
    63 changes: 63 additions & 0 deletions ListResource.java
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    package week4.college7.bigshopper.shopping.webservices;

    import week4.college7.bigshopper.shopping.helpers.SimpleShoppingListResponse;
    import week4.college7.bigshopper.shopping.model.Shop;
    import week4.college7.bigshopper.shopping.model.ShoppingList;

    import javax.ws.rs.GET;
    import javax.ws.rs.Path;
    import javax.ws.rs.PathParam;
    import javax.ws.rs.Produces;
    import javax.ws.rs.core.MediaType;
    import javax.ws.rs.core.Response;
    import java.util.ArrayList;
    import java.util.List;
    import java.util.Map;
    import java.util.stream.Collectors;

    @Path("list")
    public class ListResource {

    @GET
    @Produces(MediaType.APPLICATION_JSON)
    public Response getShoppingLists()
    {
    // Pak alle shopping lists
    List<ShoppingList> shoppingLists = Shop.getShop().getAllShoppingLists();

    // Return error response met Map.of()
    if(shoppingLists.isEmpty()) {

    // https://stackoverflow.com/questions/6802483/how-to-directly-initialize-a-hashmap-in-a-literal-way
    Map<String, String> errorObject = Map.of("error", "no lists present");

    return Response.ok(errorObject).build();
    }

    // Return de shopping lists
    return Response.ok(shoppingLists).build();

    // ... of:

    // Mapping met map() naar SimpleShoppingListResponse
    List<SimpleShoppingListResponse> responseObjects = shoppingLists.stream().map(
    shoppingList -> SimpleShoppingListResponse.fromShoppingList(shoppingList)
    ).collect(Collectors.toUnmodifiableList());

    return Response.ok(responseObjects).build();
    }

    @GET
    @Produces(MediaType.APPLICATION_JSON)
    @Path("{name}")
    public Response getShoppingListByName(@PathParam("name") String name)
    {
    ShoppingList list = Shop.getShop().getShoppingListByName(name);

    if(list == null) {
    return Response.ok(Map.of("error", "no list by that name")).build();
    }

    return Response.ok(list).build();
    }
    }
    13 changes: 13 additions & 0 deletions PersonResource.java
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    // ...

    @Path("shopper")
    public class PersonResource {

    @GET
    @Produces(MediaType.APPLICATION_JSON)
    public List<Shopper> getShoppers() {
    return Shop.getShop().getAllPersons();
    }

    // ...
    }
    19 changes: 19 additions & 0 deletions ProductResource.java
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    // ...

    @Path("product")
    public class ProductResource {

    @GET
    @Produces(MediaType.APPLICATION_JSON)
    public Response getProducts() {
    List<Product> products = Shop.getShop().getAllProducts();

    if(products.isEmpty()) {
    return Response.ok(Map.of("error", "no products available")).build();
    }

    // Transformeer lijst van objecten naar lijst van strings met map()
    List<String> productNames = products.stream().map(product -> product.getName()).collect(Collectors.toList());
    return Response.ok(productNames).build();
    }
    }
    29 changes: 29 additions & 0 deletions SimpleShoppingListResponse.java
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    package week4.college7.bigshopper.shopping.helpers;

    import javassist.Loader;
    import week4.college7.bigshopper.shopping.model.Item;
    import week4.college7.bigshopper.shopping.model.ShoppingList;

    import java.util.List;

    public class SimpleShoppingListResponse {
    public String name;
    public String owner;
    public List<Item> listItems;

    private SimpleShoppingListResponse(String name, String owner, List<Item> listItems) {
    this.name = name;
    this.owner = owner;
    this.listItems = listItems;
    }

    public static SimpleShoppingListResponse fromShoppingList(ShoppingList shoppingList) {
    SimpleShoppingListResponse responseObject = new SimpleShoppingListResponse(
    shoppingList.getName(),
    shoppingList.getOwner().getName(),
    shoppingList.getListItems()
    );

    return responseObject;
    }
    }