consider the following code , this is a method in my BLL to extract data from my DAL which is an EF4 .edmx file
public ObservableCollection<Glass> ShowGlasses()
...
var result = from d in glassContext.GLASSes
...
now I want to replace glassContext.GLASSes with a parameter so that I can access different tables/views with the same structure using this method, for example I may want to use glassContext.GLASSes2 instead, how can I do this ?
Thanks in advance
I think you want something like this
public ObservableCollection<T> ShowGlasses<T>(ObjectQuery<T> source)
{
...
var result = from d in source
...
}
Related
I want to generate a custom named constructor in Dart.
I have many dto class to implement and each should provide a named constructor like: ClassName.fromMap().
For example for this class:
class Student {
final String name;
final int age;
}
The generated constructor should be:
Student.fromMap(Map<String, dynamic> map) :
name = map['name'],
age = map['age'];
How can I retrieve the list of the field of my current class as strings? Is that even possibile?
Of course I can have a variable number of fields.
My template looks like:
$CLASS$.fromMap(Map<String, dynamic> map) :
$INITIALIZATION_LIST$
binding $CLASS$ to dartClassName().
Now I'd like to bind $INITIALIZATION_LIST$ to something like:
getClassFieldList().forEach((fieldName) => "$fieldName = map['$fieldName']")
Can I achieve something like that?
There is no way to retrieve a list of Dart class fields using predefined live template functions. You can try developing your own template macro for this. See https://intellij-support.jetbrains.com/hc/en-us/community/posts/206201699-create-a-new-expression-for-a-live-template-for-actionscript for some hints.
Existing live template functions implementations can be found at https://github.com/JetBrains/intellij-community/tree/master/platform/lang-impl/src/com/intellij/codeInsight/template/macro.
You can also try using Structural Search and Replace instead of live template
I've created a method like so:
void myMethod(Map kwArgs, def myParam)
{
println kwArgs.firstName
println [kwArgs.lastName, "Wilcox"].find()
// ^^^ if lastName named parameter not specified, "Wilcox"
....
}
Now comes the time to document this method with GroovyDoc. Part of it is easy
/**
myMethod rules the world
#param myParam something something
But how do I document the named parameters? (Likewise, how can I specify that the lastName parameter has a default? (ie is there some metadata I can set or just make that explicit to the reader in the English description?)
But how do I document the named parameters?
Unless you are considering writing a customer doclet or similar, I think you will just document them as text in the comment.
Background: Project is a Data Import utility for importing data from tsv files into a EF5 DB through DbContext.
Problem: I need to do a lookup for ForeignKeys while doing the import. I have a way to do that but the retrieval if the ID is not functioning.
So I have a TSV file example will be
Code Name MyFKTableId
codevalue namevalue select * from MyFKTable where Code = 'SE'
So when I process the file and Find a '...Id' column I know I need to do a lookup to find the FK The '...' is always the entity type so this is super simple. The problem I have is that I don't have access to the properties of the results of foundEntity
string childEntity = column.Substring(0, column.Length - 2);
DbEntityEntry recordType = myContext.Entry(childEntity.GetEntityOfReflectedType());
DbSqlQuery foundEntity = myContext.Set(recordType.Entity.GetType()).SqlQuery(dr[column])
Any suggestion would be appreciated. I need to keep this generic so we can't use known type casting. The Id Property accessible from IBaseEntity so I can cast that, but all other entity types must be not be fixed
Note: The SQL in the MyFKTableId value is not a requirement. If there is a better option allowing to get away from SqlQuery() I would be open to suggestions.
SOLVED:
Ok What I did was create a Class called IdClass that only has a Guid Property for Id. Modified my sql to only return the Id. Then implemented the SqlQuery(sql) call on the Database rather than the Set([Type]).SqlQuery(sql) like so.
IdClass x = ImportFactory.AuthoringContext.Database.SqlQuery<IdClass>(sql).FirstOrDefault();
SOLVED:
Ok What I did was create a Class called IdClass that only has a Guid Property for Id. Modified my sql to only return the Id. Then implemented the SqlQuery(sql) call on the Database rather than the Set([Type]).SqlQuery(sql) like so.
IdClass x = ImportFactory.AuthoringContext.Database.SqlQuery<IdClass>(sql).FirstOrDefault();
I am looking to create a dictionary type of object from below string without using any extension class. I would prefer to write a .net class which will do serialize and deserialize it.
string userDetails = "{"FullName":"Manoj Singh","username":"Manoj","Miles":2220,"TierStatus":"Gold","TierMiles":23230,"MilesExpiry":12223,"ExpiryDate":"31 January 2011","PersonID":232323,"AccessToken":"sfs23232s232","ActiveCardNo":"232323223"}";
I have got above string in my results, now I want to convert it into dictionary type of Object using .NET 2.0.
Thanks.
I was waiting since many days to have any response on it, unfortunately there were no response, well guys I resolved my problem with the help of this question Can you Instantiate an Object Instance from JSON in .NET?
Thanks to all you who have seen this question!
try this!!
Class deserialize<Class>(string jsonStr, Class obj) { /* ... */}
var jstring = "{fname='Test', lname='test, oth='test'}";
var p = deserialize(jstring, new {fname="",lname=""});
var x = person.fname; //strongly-typed
Using Automapper, how do you handle the mapping of a property value on an object to an instance of a string. Basically I have a list of Role objects and I want to use Automapper to map the content of each "name" property to a corresponding list of string (so I just end up with a list of strings). I'm sure it has an obvious answer, but I can't find the mapping that I need to add to "CreateMap" to get it to work.
An example of the relevant code is shown below:
public class Role
{
public Guid Id{get;set;}
public string Name{get;set;}
...
...
}
// What goes in here?
Mapper.CreateMap<Role, string>().ForMember(....);
var allRoles = Mapper.Map<IList<Role>, IList<string>>(roles);
I love Automapper (and use it in a number of projects), but wouldn't this be easier with a simple LINQ statement?
var allRoles = from r in roles select r.Name
The AutoMapper way of accomplishing this:
Mapper.CreateMap<Role, String>().ConvertUsing(r => r.Name);