I have a code which has below two new List objects of different type:
List<TypeOne> typeOneList = new ArrayList<TypeOne>();
List<TypeTwo> typeTwoList = new ArrayList<TypeTwo>();
How can I use PowerMock.expectNew() to return two different ArrayList objects? Like..
PowerMock.expectNew(ArrayList.class).andReturn(typeOneList);
PowerMock.expectNew(ArrayList.class).andReturn(typeTwoList);
How we can differentiate in the above statement as for which statement the objects corresponds to?
thanks!
Well. You have to define in the below way in the order you want..
PowerMock.expectNew(ArrayList.class).andReturn(typeOneList); //first expect list object of TypeOne
PowerMock.expectNew(ArrayList.class).andReturn(typeTwoList); //then expect list object of TypeTwo
and powermock will return the objects in the order of expectations when the below code executes:
List<TypeOne> typeOneList = new ArrayList<TypeOne>();
List<TypeTwo> typeTwoList = new ArrayList<TypeTwo>();
Related
I have a model instance for which I set the attributes from a post request using $my_instance->fill($request_json) and after saving using $my_instance->save() the instance as a record in the database, I want to receive the saved object back with all its attributes using return response()->json($my_instance). Now this works fine as long as I provide all the attributes I set in the protected $fillable = [] on the model class inside the post request body. But when I want to send only part of the attributes in the post request, what happens is that inside tinker I see the skipped attributes are set to null. This is fine. But the problem is when I return using return response()->json($my_instance) I don't see the skipped attributes and I want them to be returned even with them being null in my databse. Is there a way to instruct laravel to do so?
A possible implementation to your question COULD be to:
Allow all possible fields that are getting nulled out to be fillable in your model.
Then, use a middleware with collections to do:
$form_stuff = $request->all();
$form_stuff = collect($form_stuff);
$things_you_want = $form_stuff->only('wanted_field_1','wanted_field_2');
$things_that_should_be_null = $form_stuff->only('nulled_field_1','nulled_field_2');
$keys = array_keys($thins_that_should_be_null);
$values = array_fill(0, count($keys), null);
$new_array_of_nulled_things = array_combine($keys, $values);
var_dump($things_you_want);
var_dump($new_array_of_nulled_things);
die();
WARNING: Since there was no code posted, this is just concept mostly and has not been tested so you will have to play with it to get it work the way you want.
I have a select that I get Json post with http, but I try to sets initially selected index but there is nothing in the list do not select anything. because the json is great.
public AppMainScreen() {
loadLists();
MySelect = new ObjectChoiceField( "Select: ", new Object[0], 3 );
VerticalFieldManager vfm = new VerticalFieldManager(Manager.VERTICAL_SCROLL);
vfm.add(MySelect);
add(vfm);
}
This statement appears wrong to me:
new ObjectChoiceField( "Select: ", new Object[0],3);
The second parameter to this constructor is supposed to be an array of objects whose .toString() method will be used to populate the choices. In this case, you have given it a 0 length array, i.e. no Objects. So there is nothing to choose. And then you have asked it to automatically select the 3rd item, and of course there is no 3rd item.
You should correct the code to actually supply an object array.
One option to make it easy is have your JSON load actually create a String array with one entry per selectable item. Then you use the index selected to identify the chosen item.
I would like to query a table based on a list of KeyValuePair. With a Model-First approach, I could do the following:
var context = new DataContext();
var whereClause = new StringBuilder();
var objectParameters = new List<ObjectParameter>();
foreach(KeyValuePair<string, object> pair in queryParameters)
{
if (whereClause.Length > 0)
whereClause.Append(" AND ");
whereClause.Append(string.Format("it.[{0}] = #{0}", pair.Key));
parameters.Add(new ObjectParameter(pair.Key, pair.Value));
}
var result = context.Nodes.Where(whereClause.ToString(), parameters.ToArray());
Now I'm using a Code-First approach and this Where method is not available anymore. Fortunately, I saw an article somewhere (I can't remember anymore) which suggested that I could convert the DbContext to a IObjectContextAdapter then call CreateQuery like this:
var result = ((IObjectContextAdapter)context)
.ObjectContext.CreateQuery<Node>(whereClause.ToString(), parameters.ToArray());
Unfortunately, this throws an error:
'{ColumnName}' could not be resolved in the current scope or context. Make sure that all referenced variables are in scope, that required schemas are loaded, and that namespaces are referenced correctly.
Where {ColumnName} is the column specified in the whereClause.
Any ideas how I can dynamically query a DbSet given a list of key/value pairs? All help will be greatly appreciated.
I think your very first problem is that in the first example you are using Where on the entity set but in the second example you are using CreateQuery so you must pass full ESQL query and not only where clause! Try something like:
...
.CreateQuery<Node>("SELECT VALUE it FROM ContextName.Nodes AS it WHERE " + yourWhere)
The most problematic is full entity set name in FROM part. I think it is defined as name of the context class and name of the DbSet exposed on the context. Another way to do it is creating ObjectSet:
...
.ObjectContext.CreateObjectSet<Node>().Where(yourWhere)
I'm trying to select an object using values of another object in LINQ SQL,
I currently have this,
var result1 = (from s in pdc.ScanLogs
from ec in pdc.ExhibitsContacts
where s.ExhibitID == ec.ExhibitID
select ec.Contact);
I want to assign a value of ec.Contact.Note = ec.Comment;
Is there to a way to do this in LINQ SQL without writing multiple queries?
I read this blog article: http://blog.robvolk.com/2009/05/linq-select-object-but-change-some.html but it doesn't seem to work with LINQ SQL.
Basically you can't do this. LINQ is meant to be a query language, and what you want to do is mutate existing entities with your query. This means your query would have side effects and this is not something that is supported by LINQ to SQL.
While this won't work in a single query while returning LINQ to SQL entities, what will work is when you return simple DTO structues. For instance:
var result1 =
from s in pdc.ScanLogs
from ec in s.ExhibitsContacts
select new ContactDto
{
Id = ec.Contact.Id,
Note = ec.Comment,
SomeOtherFields = ec.Contact.SomeOtherFields
};
As a side note: also look at how I removed the where s.ExhibitID == ec.ExhibitID join from the query, by just using the ExhibitsContacts property of the ScanLog entity (which will be generated by LINQ to SQL for you when your database schema has the proper foreign keys defined).
Update:
When you need to return those DTO from several methods, you might consider centralizing the transformation from a collection of entities to a collection of DTO objects. What I tend to do is place this method on the DTO (which makes it easy to find). The code might look like this:
public class ContactDto
{
// Many public properties here
public static IQueryable<ContactDto> ToDto(
IQueryable<Contact> contacts)
{
return
from contact in contacts
select new ContactDto
{
Id = contact.Id,
Note = contact.ExhibitsContact.Comment,
ManyOtherFields = contact.ManyOtherFields
};
}
}
The trick with this static transformation method is that it takes an IQueryable and returns an IQueryable. This allows to to simply specify the transformation and let LINQ to SQL (or any other LINQ enabled O/RM) to efficiently execute that LINQ expression later on. The original code would now look like this:
IQueryable<Contact> contacts =
from s in pdc.ScanLogs
from ec in s.ExhibitsContacts
select ec.Contact;
IQuerable<ContactDto> result1 = ContactDto.ToDto(contacts);
the problem is that LINQ to SQL does not know how to interpret your extension method. The only way, other than using stored procedures from LINQ to SQL (which kind of defeats the ponit), is to get the object, update and then commit changes.
I am using Linq-to-SQL.
Currently I am binding gridview through linq which query written in business logic call. I have extract record through query in business logic class and I want to bind that particular data to gridview and return data.
How to return data which type is array?
The code is here:
CMSBusiness.DataClasses1DataContext db = new DataClasses1DataContext();
var cate =
from p in db.categoryTables
select new
{
categoryId=p.categoryId,
categoryName=p.categoryName,
categoryDesc=p.categoryDesc
};
How to return value and bind gridview?
Try gridView.DataSource = cate;, this should work.
We also recommend you to take a look at this article.