Checkout the [Dozer][1] project. 

Dozer supports simple property mapping, complex type mapping, bi-directional mapping, implicit-explicit mapping, as well as recursive mapping. 

It makes use of [BeanUtils][2] and extends on it.


  [1]: http://dozer.sourceforge.net/
  [2]: http://commons.apache.org/beanutils/

Check out [ModelMapper](http://modelmapper.org). It was inspired by AutoMapper, but adds a few new things such as intelligent mapping.

&gt; ModelMapper is an intelligent object
&gt; mapping framework that eliminates the
&gt; need to manually map objects to each
&gt; other. It uses a convention-based
&gt; approach to map objects while
&gt; providing a simple refactoring safe
&gt; API for handling specific mapping
&gt; scenarios.

http://modelmapper.org

Also a brief blog post from Jimmy Bogard, the creator of AutoMapper:

http://lostechies.com/jimmybogard/2012/09/17/automapper-for-java/

You should check the open source project [Beanutils][1] from [Apache Commons][2].


  [1]: http://commons.apache.org/beanutils/
  [2]: http://commons.apache.org/

I have an object and within it I wanna check if some properties is set to false, like:

&lt;!-- language: lang-vb --&gt;

    If (not objresult.EOF) Then
      &#39;Some code 
    End if

But somehow, sometimes `objresult.EOF` is `Empty`, and how can I check it?  

 - `IsEmpty` function is for excel cells only
 - `objresult.EOF Is Nothing` - return `Empty`
 - `objresult.EOF &lt;&gt; null` - return `Empty` as well!

VBA Check if variable is empty

Given the following LINQ to SQL query:

    var test = from i in Imports
               where i.IsActive
               select i;

The interpreted SQL statement is:

    SELECT [t0].[id] AS [Id] .... FROM [Imports] AS [t0] WHERE [t0].[isActive] = 1

Say I wanted to perform some action in the select that cannot be converted to SQL. Its my understanding that the conventional way to accomplish this is to do `AsEnumerable()` thus converting it to a workable object. 

Given this updated code:

    var test = from i in Imports.AsEnumerable()
               where i.IsActive
               select new 
               { 
                   // Make some method call 
               };

And updated SQL:

    SELECT [t0].[id] AS [Id] ... FROM [Imports] AS [t0] 
Notice the lack of a where clause in the executed SQL statement.  

Does this mean the entire &quot;Imports&quot; table is cached into memory? 
Would this slow performance at all if the table contained a large amount of records?

Help me to understand what is actually happening behind the scenes here.  


Understanding .AsEnumerable() in LINQ to SQL

Is there Java equivalent of .Net&#39;s [Automapper][1]?


  [1]: http://automapper.codeplex.com/

Automapper for Java

<p>Is there Java equivalent of .Net's <a href="http://automapper.codeplex.com/" target="_blank" rel="noopener noreferrer">Automapper</a>?</p>


I am getting this message when I run my web application. It runs fine but I get this message during shutdown.

&gt; SEVERE: A web application registered the JBDC driver [oracle.jdbc.driver.OracleDriver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.

Any help appreciated.


To prevent a memory leak, the JDBC Driver has been forcibly unregistered

I&#39;m trying to set up a [request-scoped bean][1] in Spring.

I&#39;ve successfully set it up so the bean is created once per request. Now, it needs to access the HttpServletRequest object.

Since the bean is created once per request, I figure the container can easily inject the request object in my bean. How can I do that ?


  [1]: http://static.springsource.org/spring/docs/3.0.x/spring-framework-reference/html/beans.html#beans-factory-scopes-other

Spring: how do I inject an HttpServletRequest into a request-scoped bean?

Please advice on where can I find the lib in order to use the shorter expression of `System.out.println()` and where should I place that lib.

How to make System.out.println() shorter

I&#39;m usually testing this alongside a `string == null`, so I&#39;m not really concerned about a null-safe test. Which should I use?

    String s = /* whatever */;
    ...
    if (s == null || &quot;&quot;.equals(s))
    {
        // handle some edge case here
    }

or

    if (s == null || s.isEmpty())
    {
        // handle some edge case here
    }

On that note - does `isEmpty()` even do anything other than `return this.equals(&quot;&quot;);` or `return this.length() == 0;`?

Should I use string.isEmpty() or &quot;&quot;.equals(string)?

Is there a better way for getting rid of accents and making those letters regular apart from using `String.replaceAll()` method and replacing letters one by one?
Example:

Input:  `orčpžs&#237;&#225;&#253;d`

Output: `orcpzsiayd`

It doesn&#39;t need to include all letters with accents like the Russian alphabet or the Chinese one.

Is there a way to get rid of accents and convert a whole string to regular letters?

I&#39;m a little fuzzy on what the difference between a &quot;group&quot; and a &quot;capture&quot; are when it comes to .NET&#39;s regular expression language.  Consider the following C# code:

    MatchCollection matches = Regex.Matches(&quot;{Q}&quot;, @&quot;^\{([A-Z])\}$&quot;);

I expect this to result in a single capture for the letter &#39;Q&#39;, but if I print the properties of the returned `MatchCollection`, I see:

    matches.Count: 1
    matches[0].Value: {Q}
    matches[0].Captures.Count: 1
    matches[0].Captures[0].Value: {Q}
    matches[0].Groups.Count: 2
    matches[0].Groups[0].Value: {Q}
    matches[0].Groups[0].Captures.Count: 1
    matches[0].Groups[0].Captures[0].Value: {Q}
    matches[0].Groups[1].Value: Q
    matches[0].Groups[1].Captures.Count: 1
    matches[0].Groups[1].Captures[0].Value: Q

What exactly is going on here?  I understand that there&#39;s also a capture for the entire match, but how do the groups come in?  And why doesn&#39;t `matches[0].Captures` include the capture for the letter &#39;Q&#39;?

What&#39;s the difference between &quot;groups&quot; and &quot;captures&quot; in .NET regular expressions?

I&#39;m new to .NET C# programming. I&#39;m following few books. It is said that instead of compiling C# code directly to machine code, it is converted into an intermediate language (called MSIL aka CIL). But when I compile, I get an exe/dll file.

1. Is this MSIL/CIL contained in these exe/dll files?
2. I want to see that intermediate language code, just to get feel for its existence. How do I view it?
3. They are calling this exe/dll file an `assembly`. Are they using this &quot;fancy word&quot; just to differentiate these from the exe/dll files that contain native/machine code? 

How can I view MSIL / CIL generated by C# compiler? Why is it called assembly?

I&#39;m creating new processes using `System.Diagnostics.Process` class from my application.&lt;br&gt;&lt;br&gt; I want this processes to be killed when/if my application has crashed. But if I kill my application from Task Manager, child processes are not killed.&lt;br&gt;&lt;br&gt; Is there any way to make child processes dependent on parent process?

Kill child process when parent process is killed

I would like to specify that a decimal field for a price must be &gt;= 0 but I don&#39;t really want to impose a max value.

Here&#39;s what I have so far...I&#39;m not sure what the correct way to do this is.

    [Range(typeof(decimal), &quot;0&quot;, &quot;??&quot;] public decimal Price { get; set; }

How to specify a min but no max decimal using the range data annotation attribute?

Is there a way to use `INotifyPropertyChanged` with auto-properties? Maybe an attribute or something other, not obvious to me.

    public string Demo{
        get;set;
    }

For me, auto-properties would be an extremely practicall thing, but almost always, I have to raise the `PropertyChanged`-event if the property value has been changed and without a mechanism to do this, auto-properties are useless for me. 



INotifyPropertyChanged and Auto-Properties

What is the difference between the `remap`, `noremap`, `nnoremap` and `vnoremap` mapping commands in Vim?


What is the difference between the remap, noremap, nnoremap and vnoremap mapping commands in Vim?

Are there any elegant quick way to map object to a dictionary and vice versa?

### Example:

    IDictionary&lt;string,object&gt; a = new Dictionary&lt;string,object&gt;();
    a[&quot;Id&quot;]=1;
    a[&quot;Name&quot;]=&quot;Ahmad&quot;;
    // .....

becomes

    SomeClass b = new SomeClass();
    b.Id=1;
    b.Name=&quot;Ahmad&quot;;
    // ..........

Mapping object to dictionary and vice versa

My database contains 3 tables:
User and Service entities have many-to-many relationship and are joined with the SERVICE_USER table as follows:

USERS - SERVICE_USER - SERVICES

SERVICE_USER table contains additional BLOCKED column.

What is the best way to perform such a mapping?
These are my Entity classes

    @Entity
    @Table(name = &quot;USERS&quot;)
    public class User implements java.io.Serializable {
    
    private String userid;
    private String email;
    
    @Id
    @Column(name = &quot;USERID&quot;, unique = true, nullable = false,)
    public String getUserid() {
    return this.userid;
    }
    
    .... some get/set methods
    }
    
    @Entity
    @Table(name = &quot;SERVICES&quot;)
    public class CmsService implements java.io.Serializable {
    private String serviceCode;
    
    @Id
    @Column(name = &quot;SERVICE_CODE&quot;, unique = true, nullable = false, length = 100)
    public String getServiceCode() {
    return this.serviceCode;
    }
    .... some additional fields and get/set methods
    }

I followed this example http://giannigar.wordpress.com/2009/09/04/m ... using-jpa/
Here is some test code:

    User user = new User();
    user.setEmail(&quot;e2&quot;);
    user.setUserid(&quot;ui2&quot;);
    user.setPassword(&quot;p2&quot;);
    
    CmsService service= new CmsService(&quot;cd2&quot;,&quot;name2&quot;);
    
    List&lt;UserService&gt; userServiceList = new ArrayList&lt;UserService&gt;();
    
    UserService userService = new UserService();
    userService.setService(service);
    userService.setUser(user);
    userService.setBlocked(true);
    service.getUserServices().add(userService);
    
    userDAO.save(user);

The problem is that hibernate persists User object and UserService one. No success with the CmsService object

I tried to use EAGER fetch - no progress

Is it possible to achieve the behaviour I&#39;m expecting with the mapping provided above?

Maybe there is some more elegant way of mapping many to many join table with additional column?

Mapping many-to-many association table with extra column(s)

I have a `User` &lt; `Country` model. A user belongs to a country, but may not belong to any (null foreign key).

How do I set this up? When I try to insert a user with a null country, it tells me that it cannot be null.

The model is as follows:

     public class User{
        public int CountryId { get; set; }
        public Country Country { get; set; }
    }

    public class Country{
        public List&lt;User&gt; Users {get; set;}
        public int CountryId {get; set;}
    }

Error: `A foreign key value cannot be inserted because a corresponding primary key value does not exist. [ Foreign key constraint name = Country_Users ]&quot;}`

Entity framework code-first null foreign key

**Is it possible to map a NumPy array in place? If yes, how?**

Given `a_values` - 2D array - this is the bit of code that does the trick for me at the moment:

    for row in range(len(a_values)):
        for col in range(len(a_values[0])):
            a_values[row][col] = dim(a_values[row][col])

But it&#39;s so ugly that I suspect that somewhere within NumPy there must be a function that does the same with something looking like:

    a_values.map_in_place(dim)

but if something like the above exists, I&#39;ve been unable to find it.


Mapping a NumPy array in place

I have the following Automapper defintion:


    Mapper.CreateMap&lt;IB.BusinessComponents.Data.LocationMaster, IB.Entites.Master.Location&gt;();
    Mapper.CreateMap&lt;IB.BusinessComponents.Data.LocationMaster, IB.Entites.Master.Location&gt;()
        .ForMember(destination =&gt; destination.Id, source =&gt; source.MapFrom(item =&gt; item.LocationMasterID))
        .ForMember(destination =&gt; destination.ChildLocationList, source =&gt; source.Ignore());

This works fine when I map a single object.  But I can&#39;t seem to pass in Lists of objects. Do I need a different definition when passing in a list, or is it not possible?

Automapper - Does it map lists of objects?

Is there a way to do this? We have a SummaryDto that maps from three different types, and when we create a map for each type, props that are not mapped are throwing an error. There are about 35 attributes on the summary dto. To use Ignore() option on each one is just too much trouble. Is there a global ignore? Something like

    CreateMap&lt;Source,Target&gt;()
       .IgnoreAllUnmapped();

How to ignore all destination members, except the ones that are mapped?

Everytime I&#39;m looking for [AutoMapper][1] stuff on StackOverflow, I&#39;m reading something about [ValueInjecter][2].

Can somebody tell me the pros and cons between them (performance, features, API usage, extensibility, testing) ?


  [1]: http://automapper.codeplex.com/
  [2]: http://valueinjecter.codeplex.com/

AutoMapper vs ValueInjecter

I&#39;m using Automapper and I have the following scenario:
Class OrderModel has a property called &#39;ProductName&#39; that isn&#39;t in the database.
So when I try to do the mapping with:
 

    Mapper.CreateMap&lt;OrderModel, Orders&gt;(); 

It generates an exception :
 
&quot;The following 1 properties on Project.ViewModels.OrderModel are not mapped: &#39;ProductName&#39;

I&#39;ve read at [AutoMapper&#39;s Wiki for Projections][1] the opposite case (the extra attribute is on the destination, not in the source which is actually my case )

How can I avoid automapper to make the mapping of this property?


  [1]: https://github.com/AutoMapper/AutoMapper/wiki/Projection

Ignore mapping one property with Automapper

I have the classes:

    public class Person{ /* Props here */ }

    public class PersonViewModel { /* Props here */ }

Then the list:

    List&lt;Person&gt; people = new List&lt;Person&gt;();
    List&lt;PersonViewModel&gt; peopleVM = Mapper
                                    .MapList&lt;Person, PersonViewModel&gt;(people); //Problem here.

What is the correct way to do this?

Content Type	Original Author	Original Content on Stackoverflow
Question	mgamer	View Question on Stackoverflow
Solution 1 - Java	user159088	View Answer on Stackoverflow
Solution 2 - Java	Jonathan	View Answer on Stackoverflow
Solution 3 - Java	frm	View Answer on Stackoverflow

Automapper for Java

Java Problem Overview

Java Solutions

Solution 1 - Java

Solution 2 - Java

Solution 3 - Java

Understanding .AsEnumerable() in LINQ to SQL

VBA Check if variable is empty

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