43
votes
Accepted
Apex Cast sObject list dynamically to a specific sObject Type
I know this approach is strange because you are still working with a List<SObject>, but when you assign it you can make it more specific (e.g. List<Account>) by using Type.forName and Type....
- 143k
41
votes
Accepted
Howto wildcard SELECT * to query all fields of objects in APEX?
Update:
Spring '21 Release (API v51+) adds new SOQL FIELDS function can select all fields of an object.
Refer to documentation
Knowing that new FIELDS function must have a LIMIT of at most 200, when ...
- 14.5k
27
votes
Accepted
How to convert a string to sObjectType
An alternate way to do this without going through Schema.getGlobalDescribe():
String myString = 'Account';
SObjectType sObjType = ((SObject) Type.forName(myString).newInstance())
...
- 63k
27
votes
Accepted
Get all Parent and child objects related to the current object
Get All Parent objects.
for(Schema.SobjectField strFld: Account.SobjectType.getDescribe().fields.getMap().Values())
{
if(strFld.getDescribe().getType() == Schema.DisplayType.REFERENCE)
{
...
- 22.1k
26
votes
Accepted
What is a use case where one would use an SObject as a Map key?
I use SObject as a key when I want to use a composite key. For example, say I want to find duplicates based on first name, last name, and email. I might loop through a list of contacts, and create a ...
- 438k
25
votes
How to convert a string to sObjectType
Here is the way:
// I have Account name in String
String objectStr = 'Account';
// Convert to schema.sObjectType
Schema.SObjectType convertType = Schema.getGlobalDescribe().get(objectStr);
// ...
- 22.3k
23
votes
Accepted
Get SObject by Id
I'm not sure you could do exactly that, but what you could do is use the Id instance class to achieve what you need, for example:
Schema.SObjectType sobjectType = myId.getSObjectType();
String ...
- 16.3k
22
votes
Is it possible to convert an SObject to a Map?
The sObject has a native function getPopulatedFieldsAsMap that converts from an sObject to a Map<String,Object>. This was released in Summer '16 which is probably why the other answers resort ...
- 957
21
votes
Howto wildcard SELECT * to query all fields of objects in APEX?
I suggest that rather than relying on some utility class, you become familiar with the platform's APIs so you can compose the appropriate solution each time you want to query all the fields, ...
- 130k
21
votes
Accepted
Clone list of SObject records using deepClone() to clone all the fields on records
Yes, deepClone will only pull in fields you have in memory. In this case, you do indeed have to query for them. You should question why you need every field, but if you want to maintain a configurable ...
- 143k
19
votes
Howto wildcard SELECT * to query all fields of objects in APEX?
I created some helper classes for this. You can find them here.
There are 3 classes: xt, xs and xr. They contain also some other tools I couldn't separate for this answer, but the method you need is ...
- 33.7k
18
votes
How to get ID prefix if you know the object name
As a regular user, the only way would be to either attempt to create a record from a related object then look at the URL to get the prefix or view an existing record and look at the url.
If the user ...
- 53.2k
17
votes
Accepted
How to get to which object the field has reference
You can get this data on the lookup field using the DescribeFieldResult.getReferenceTo() method. From that field describe result you can retrieve the related object's name or the display label.
// ...
- 22.4k
16
votes
Accepted
How to use addError() with a dynamically derived field name?
You could vote for this Provide an additional addError method on SObject that accepts a field name idea, but as it has got nowhere in the last 5 years there is no reason to expect any progress in the ...
- 130k
16
votes
Accepted
Working with SObjects instead of concrete custom objects (i.e., abstraction in apex)
Mechanics
You need to use the get and put methods. Each method supports both String and SObjectField as the parameter type:
// terse
myObject.put('UniqueId__c', myObject.get('ExternalId__c'));
// ...
- 143k
15
votes
Values of SObject map are lost after a DML call
Using complex objects as Map keys can have unexpected consequences.
In your example, the insert causes the Id of the key Account to be updated so the hashCode and equals methods of the Account ...
- 130k
14
votes
Accepted
How to compare two sObjects from 2 List<Lead>()?
The comparison operators don't work the way you think they do, not even across all objects. Let's focus on SObject and SObject[] types for this question, since that's your question.
== acts as a deep ...
- 438k
13
votes
Accepted
Can someone please explain what is meant by sObject?
An SObject represents a specific table in the database that you can discretely query. The API Name is what you reference as ending in __c. Standard SObjects have names like Account or Opportunity, ...
- 143k
13
votes
Accepted
How to send wrapped generic SObjects from Lightning to Apex
I know that when you serialize an SObject it has some extra information on it that you might not expect:
Contact c = new Contact();
system.debug(json.serialize(c));
Result:
{"attributes":{"type":"...
- 9,121
12
votes
Accepted
Utility Methods flexible enough for all sObject Types
You don't need to have a return type to get data back to the callee, and sometimes this is more convenient. Here's my version of a "get values from records" implementation:
public static void ...
- 438k
12
votes
Accepted
Setting field values generic SObject
You don't need to go through the complicated method you went through to get the new record. The following works just as well:
Id objId = 'a0Ci000000vd7xA';
SObject record = objId.getSObjectType()....
- 438k
12
votes
Accepted
How to initialize sObject with Relational fields?
You need to use the name pointing reference:
MyObject__c record = new MyObject__c();
record.Parent__r = new Parent__c(Name='Populated');
The above is functionally equivalent to putSObject:
...
- 143k
11
votes
Accepted
Using a generic SObject in VisualForce Page
This works fine for me. Ran a couple tests and all of the below work.
VF Page
<apex:page controller="GenericTest">
{!test['name']}
{!test1.obj['name']}
<apex:repeat value="{!...
- 24k
11
votes
What is a use case where one would use an SObject as a Map key?
Sfdcfox explains a great reason to use this, but at a more abstract level the reason it's supported it because maps can have any type as a key.
In a model where custom classes, or any other type, can ...
- 22.2k
11
votes
Accepted
How to create nested JSON object from custom sObject?
I suggest building and serializing nested maps for this:
Map<String, Object> m = new Map<String, Object>();
for (options__C opt:options) {
m.put(opt.Name__c, new Map<String, ...
- 130k
11
votes
Accepted
Collection store exception adding all List<Opportunity> to List<Account>
Instantiate a new generic list and it won't carry over any type information. Simply casting to List<SObject> doesn't remove the fact it was originally a List<Account>.
List<SObject> ...
- 143k
10
votes
Utility Methods flexible enough for all sObject Types
It is absolutely possible! We have even built this exact utility where I work. However, I can't just give you the answer, but I will give some hints.
SObject methods: get will return the value of the ...
- 143k
10
votes
Accepted
Name field of Group sObject is Not Nillable but returns null
As per the documentation, Group.Name is required.
Name
Type: string
Properties: Create, Filter, Group, Sort, Update
Description: Required. Name of the group. Corresponds to Label on the user ...
- 98.8k
10
votes
What is the object that stores "files"
The actual "content" of the file is saved as a ContentVersion
ContentVersion can have custom fields
ContentVersion is a child of ContentDocument - an object implicitly created by SFDC when the first ...
- 63k
10
votes
Accepted
Get Object API name of any Lookup field
Use Schema.getGlobalDescribe() method that accepts String as API name of object and then use getMap() method to get map of SObjectFields
String objectName = 'Opportunity';
String fieldName = '...
- 17.3k
Only top scored, non community-wiki answers of a minimum length are eligible