21
votes
Accepted
Purpose of an inner class
I think this question is way too broad for one answer to cover. I suggest you look at some libraries out there to see how they use inner classes.
There are so many use cases. It would be really ...
- 149k
14
votes
Purpose of an inner class
Their primary use in my experience is to logically group classes together and/or reduce the number of top-level classes. This starts to matter when your code base grows into hundreds of top-level ...
- 135k
12
votes
What's It Called: Inner Class Without Sharing?
When this pattern is done unintentionally, it's a "privilege escalation bug," which is a major security concern. This design pattern will at least raise red flags with the security review team if this ...
- 481k
11
votes
Accepted
Confirmation that (inner) classes are still not fully supported in @AuraEnabled methods?
Unfortunately I wasn't able to make it work using the class directly, either with an inner class or even a top level class. Using the second solution with a String attribute in your AuraEnabled method ...
- 8,516
9
votes
Accepted
What's It Called: Inner Class Without Sharing?
I believe the term you're looking for is Trampoline because it allows a developer to "Bounce" up into a higher security context. Trampolines should be written very carefully and validate their ...
- 288
9
votes
Accepted
Inner class does not allow maps
The issue is with the spellings of the access modifier for your second map in the inner class. Please change it to public from pubilc and it will resolve your issue.
I am successfully able to save the ...
- 594
8
votes
Accepted
Inner Classes/Interfaces
It means that an inner class can't have an inner class in Apex. So a structure like this is legal and common, especially when implementing patterns like wrapper classes or dependency injection:
...
- 92.1k
8
votes
Accepted
An inner interface inside an outer interface is not supported in Apex?
As the documentation says in this entry Differences Between Apex Classes and Java Classes
- Inner classes and interfaces can only be declared one level deep inside an outer class.
So you are ...
- 890
7
votes
Accepted
Possible to declare static constants in an inner class?
No, you cannot make them static. You can use inner-class constants by simply dropping the static modifier, however.
public class Stuff
{
public class Letters
{
public final String A = ...
- 149k
7
votes
Accepted
For loop within for loop
You should never do DML statements (such as insert) inside loops, this will easily get you off limits. Create a List outside the loop, iterate over your trigger in the first loop, create new records ...
7
votes
Accepted
Managed package patches - can a public inner class be added?
Yes. We have taken this approach with our managed package when back-porting features to patches that added new top-level classes in our master branch. Obviously there are limits to what can appear in ...
- 34.1k
6
votes
Accepted
Nested Inner Classes creation in an apex class
You only have to read the first paragraph of the Apex Developer Guide documentation on Apex Class Definition to answer this question (emphasis mine):
Apex Class Definition
In Apex, you can ...
- 149k
6
votes
Accepted
Code Coverage on Inner Class/Variable Declarations
The line containing strFirstName does not require coverage because you only declare the variable, but do not instantiate it. Notice how strTitle requires coverage, but there you perform assignment. ...
- 149k
6
votes
Accepted
Problem using Protected modifier to expose method to inner class
You can use a much simpler MVR here:
public class Demo
{
protected String variable;
protected void method() { }
public String property { get; protected set; }
}
This behavior does seem ...
- 149k
6
votes
Accepted
Adding a Wrapper Class to an External Class
Somewhere else in the local context, there is a variable declaration that's shadowing the class Models.
Example:
public class TestQ242685 {
public class InnerClass {
}
public static ...
- 92.1k
6
votes
Accepted
How to make a Json object a subclass
Just pull the definitions out of the class:
global with sharing class mainclass {
class cls_SalesProductSections {
public String SectionCode; //
public String SectionName; //
public ...
- 481k
5
votes
Adding a Wrapper Class to an External Class
You seem to have a name shadowing here.
This code is adding CheckItemClass objects in a List<CheckItemClass> which is most likely declared in your controller as:
List<CheckItemClass> ...
- 30.3k
5
votes
Accepted
Best Practice deserialize a JSON to avoid heap size limit
The heap limit is more of a "suggestion" than a hard rule. Having 13 MB of used heap isn't a big deal if you only do so briefly. However, there is a hard limit for strings; one single string cannot ...
- 481k
5
votes
An inner interface inside an outer interface is not supported in Apex?
The main reason why this is not supported, is that Apex isn't Java. When salesforce.com sat down and started designing Apex, they created a BNF that they felt could be implemented in a reasonable ...
- 481k
4
votes
Accepted
Implementing CompareTo In An Inner Class That Needs Outer Class Data
You can pass in a reference to the controller class in e.g. the constructor:
public class WEvent implements Comparable {
private ActivityListAttemptController controller;
public Event e {get; ...
- 135k
4
votes
Accepted
Why Don't Visualforce Wrapper Class Getter/Setter Methods Not Exist?
Since source, Year and Field are variable then Just use p.source, p.Year and p.Field
String test1 = p.getSource();
Integer test2 = p.getYear();
String test3 = p.getField();
Instead try
String test1 ...
- 22.5k
4
votes
Accepted
Deserialization using Apex class generated using JSON2Apex gives null for inner values
Your JSON doesn't match your data structure. In Apex, you have
public cls_Transaction[] Transactions;
in the plural, but your JSON has
"messages":{
"Transaction":[
{
in the singular.
- 92.1k
4
votes
Accepted
LWC inner class property access issue
To use @wire to call an Apex method, you must annotate the Apex method with @AuraEnabled(cacheable=true). Certainly, you have forgotten the cacheable=true.
Also in the html file, instead of using ...
- 1,307
4
votes
Accepted
How to test an inner class?
Simply create an instance of inner class and populate its properties by test data:
OuterClass.ExistingAccountResult result = new OuterClass.ExistingAccountResult();
result.salesforceaccountid = // ...
- 7,454
4
votes
How do I call this method inside of inner class
Your outer class is PT_Interface, so you need to call your inner class in this format PT_Interface.PT_Request_Model.
And you can't call your constructor without a parameter since you have defined your ...
- 1,746
4
votes
Wrapper class showing error 'Inner types are not allowed to have inner types' in apex
You need to move the definition of ValueRanges outside of the fromJSON class (same as you have for values).
So your code should be something like:
public class GetTheDetails {
// Wrapper class
...
- 997
4
votes
Accepted
Apex @RestResource returning result inner class exposes private attributes
The docs do (kind of) call this out: (my emphasis)
You can use user-defined types for parameters in your Apex REST methods. Apex REST deserializes request data into public, private, or global class ...
- 102k
3
votes
Adding a Wrapper Class to an External Class
Name shadowing can take many forms...
Here is my personal favorite (as I have made this mistake more than once wrto name shadowing) from the lazy loading pattern...
public Contact[] contacts {
get ...
- 69.9k
3
votes
Accepted
How to use inner class / wrapper class as scope in Apex Batch
You are using Custom Iterator. So you need to implement same as well.
InvoiceHeaderBatch implements Database.Batchable<InvoiceHeaderListController.InvoiceData>
Here is a complete code sample ...
- 29.4k
3
votes
Confirmation that (inner) classes are still not fully supported in @AuraEnabled methods?
Spring 19 Update :
I just stumbled upon this question and I recently used something similar in Spring 19 so thought might answer this.
Inner classes are supported now, you have to use setter and ...
- 35.8k
Only top scored, non community-wiki answers of a minimum length are eligible