Linked Questions
22 questions linked to/from apex String instanceof Object?
2
votes
1
answer
65
views
How can I abstract building maps from SObject Lists in a good way? [duplicate]
I frequently find I want/need to map a list of SObjects by a value other than it's own Id.
So, I'd like to abstract this process to make it reusable.
For example, I might want to map Contacts by ...
- 4,498
17
votes
4
answers
4k
views
How to find out if an Object is a collection or single value?
I have some dynamic SOQL code in which I'd like to identify whether a method argument is a collection or a single value:
SObject[] query(SObjectType sobType, String field, Object data) {
// Want ...
- 134k
10
votes
2
answers
11k
views
What is the best way to cast/convert Map<String, SObject> to Map<Object, Object> and back again?
To reduce code duplication, at the risk of type safety, I have some method:
public Map<Object, Object> doSomething(Map<Object, Object> inputMap) {
Map<Object, Object> outputMap;
...
- 4,498
5
votes
2
answers
10k
views
Map<Object, List<SObject>> cannot be cast to Map<String, List<Account>>
I'm trying to cast a Map<Object, List<SObject>> to Map<String, List<Account>>, which fails with the error
Incompatible types since an instance of Map<Object,SObject> ...
- 3,684
2
votes
3
answers
2k
views
Why can Map<Id,List<SObject>> be assigned to Map<Id,List<Account>>?
Assigning a sobject map to a specific sobject-type is not possible, i.e
Map<Id,SObject> sobjectById = new Map<Id,SObject>();
sobjectById.put(a.Id,a);
Map<Id,Account> accountById = (...
- 1,147
2
votes
3
answers
3k
views
casting a map of Id, SObject to a map of Id, customObject
Map<Id, Segment__c> noLockedRecordsMap =
(Map<Id, Segment__c>)new LockedRecordHandler().removeLockedRecords(newMap);
The above compiles fine. Get this error at runtime:
Invalid ...
- 659
0
votes
2
answers
13k
views
What's the best way to initialize a list of strings in Apex?
I have a Map<String, Object> idCollection.
Object accountIdObject = idCollection.get('accountId');
Doing this gets me a single string value. Now I am sure that accountIdObject is a String and ...
6
votes
2
answers
2k
views
In Apex, can I detect if an Object is a Map, regardless of parameterized types?
When I declare a Map, I need to give the types, e.g.:
Map<Id, SObject> sObjectByIdMap = new Map<Id, SObject>();
We can assign map to generic values as Objects:
Object value = ...
- 4,498
3
votes
1
answer
1k
views
Illegal assignment from SObject
In Apex, I cannot successfully execute this anonymous block without casting on Ln 2 below:
List<SObject> lst = new List<SObject>{ new Custom_SObject__c() };
Custom_SObject__c cstom = lst[...
- 249
0
votes
1
answer
1k
views
Enable Map type to hold Integer, String, Boolean, Map, List... objects? (But not generic Object)
I'm attempting deserialize a list of a custom object in Apex, but got an error:
FATAL_ERROR System.JSONException: Apex Type unsupported in JSON: Object
This is because my ContactPostBack class ...
- 9
-1
votes
1
answer
835
views
Can I Convert Map<String,sobject> to Map<String,object> [closed]
I have Data in MAP<String,sobject> type map and I wants to put it in Map<String,object> type Map. Please help with this casting.
-2
votes
1
answer
797
views
Is there a way I can run an asynchronous batch class synchronously? [closed]
I know, it should not be done. But theoretically is it possible?
- 141
4
votes
2
answers
556
views
Cast arrays in Apex
Its been a long time since I casted an array and cant remember if it can be done the way Im hoping.
I have an array of type Row (Row[] rows) that is returned from a method.
The method I need to pass ...
- 397
0
votes
2
answers
477
views
Apex parameterized types
In the Salesforce docs for parameterized types stands the following:
Lists, maps and sets are parameterized in Apex: they take any data type Apex supports for them as an argument. That data type must ...
- 412
6
votes
1
answer
219
views
Unexpected Iterable behavior in Apex
Set implements the Iterable Interface based on the latest Salesforce release (API 58).
I tried to refactor my code to make it simpler and use Iterable<Object> as a supertype for a List<Object&...
- 2,422