It states in Salesforce Apex docs that I can get fields for a particular SObject (standard or custom) in the following way: Map<String, Schema.SObjectField> M = Schema.SObjectType.Custom__c.fields.getMap (); But this requires hardcoding. as I need to hardcode the API name of the SObject : Schema.SObjectType.
Full Answer
Why can't I change the value of a field in apex?
If you try, the Apex runtime engine generates an error. Additionally, formula field values and values for other fields that are read-only for the context user cannot be changed. If you use the generic SObject type instead of a specific object, such as Account, you can retrieve only the Id field using dot notation.
What are the different types of fields in Salesforce?
Field Types. 1 AnyType Field Type. The anyType field type is dynamic and returns string, date, number, or boolean data depending on the kind of field involved. For ... 2 Calculated Field Type. 3 ComboBox Field Type. 4 Currency Field Type. 5 DataCategoryGroupReference Field Type. More items
How do I change an sobject field in apex?
As in Java, SObject fields can be accessed or changed with simple dot notation. For example: System-generated fields, such as Created By or Last Modified Date, cannot be modified. If you try, the Apex runtime engine generates an error.
How do I set the ID field for Apex code saved?
You can set the Id field for Apex code saved using Salesforce API version 27.0 and later). Alternatively, you can use the generic SObject put and get methods. See SObject Class.
How do I get field data type in Apex?
we can get the all the standard and custom objects fields data types using the getGlobalDescribe, getDescribe, getType. Here Schema. DisplayType enum value is returned by the field describe result's getType method....Click here for more details:Type Field ValueWhat the Field Object ContainsIntegerInteger values21 more rows•May 14, 2014
How do I find data types in Salesforce?
get(fieldName). getDescribe(). getLabel(); //It provides to get the object fields data type.
How do I get a list of sObjects and their fields in Apex?
APEX Code. In this code, we have used the schema class to get the list of sObjects and fields in APEX. This list is later displayed with the help of Map and SelectOptions in the next set of code snippet. The schema class has the getGlobalDescribe() method which help us to get the schema of our entire salesforce org.
How do I get the field name and label in Apex?
get( a_Field_Name ). getDescribe(); // Label of the field System. debug('-=-=Label:' +a_Field_Description. getLabel()); // API Name of the field System.
What is datatype in Apex?
Data Types in Apex Data types are used to specify the different sizes and values that can be stored in a variable. Apex supports the following data types − Primitive (Integer, Double, Long, Date, Datetime, String, ID, or Boolean)
How many data types are in Apex?
Salesforce Apex Primitive datatypes are, Blob, Boolean, Date, DateTime, Decimal, Double, ID, Integer, Long, Object, String and Time. Reading this article, you can learn and test the Apex primitive datatypes in SalesForce.
How do I query sObjects in Salesforce?
If you have the sobject name in a string, e,g, 'sobjname', you can then query back the record via something like: String queryStr='select id from ' + sobjname; List
How do I list all fields in Salesforce?
You can now include any of these in the field list:FIELDS(ALL) —to select all the fields of an object.FIELDS(CUSTOM) —to select all the custom fields of an object.FIELDS(STANDARD) —to select all the standard fields of an object.
How do I query a picklist field in SOQL?
Fetch picklist values through SOQL query in Salesforcesf = Salesforce(instance_url='https://test.salesforce.com', session_id='')sf1 = Salesforce(connection parameters)sf3 = sf1.query("SELECT Color__c FROM Contact")
How do I get the field API name in Apex?
Standard objectsGo to Setup.Go to App Setup | click Customize.Locate the object the click Fields.Look for "API Name" column value in "Custom Fields & Relationships" section.
How do I find the field name in Salesforce?
To find an object's field name in Salesforce Setup:From Setup, in the Quick Find box, enter Object Manager . Click Object Manager.Click on the object in the list.From the object's management settings, click on Fields & Relationships.Click the field under Field Label to find the field name.
How do I find the label name for a field in Salesforce?
fieldMap. get(fieldName). getDescribe(). getLabel();//It provides to get the object fields label.
What is a picklist field in Salesforce?
Picklist fields contain a list of one or more items from which a user chooses a single item. They display as dropdown lists in the Salesforce user interface. One of the items can be configured as the default item.
What is a reference field?
A reference field contains an Id value that points to a unique record (usually the parent record) on another object. A reference field is analogous to the concept of a foreign key in relational databases. The name of a reference field ends, by convention, with the letters Id (such as CaseId or OpportunityId ). For example, in the OpportunityCompetitor object, the OpportunityId field is a reference field that points to the Opportunity object. It contains an ID value that uniquely identifies an Opportunity record.
What is a junctionidlist field?
Starting in API version 34.0, the JunctionIdList field type lets you manipulate the many-to-many relationship of an entity directly. You no longer need to manipulate underlying junction entity records. JunctionIdList fields can be queried and updated like any other field on the entity. Queries or updates to JunctionIdList fields act as queries or updates to the underlying junction entity records. Fields of type JunctionIdList appear in the WSDL as an unbounded array of type ID.
What is an ID field?
With rare exceptions, all objects in the API have a field of type ID. The field is named Id and contains a unique identifier for each record in the object. It is analogous to a primary key in relational databases. When you create () a new record, the Web service generates an ID value for the record, ensuring that it is unique within your organization’s data. You cannot use the update () call on ID fields. Because the ID value stays constant over the lifetime of the record, you can refer to the record by its ID value in subsequent API calls. Also, the ID value contains a three-character code that identifies the object type, which client applications can retrieve via the describeSObjects () call.
Do enumerated fields change with language?
The enumerated field values are fixed and do not change with a user’s language. However, each value may have a specified “label” field that provides the localized label for that value. Always use the value when inserting or updating a field. The query () call always returns the value, not the label.
