Map<String, CustomObject__c> myMap = new Map<String, CustomObject__c> (); for (CustomObject__c objCS : [Select z.Name, z.Id From CustomObject__c z]) myMap.put (objCS.Name, objCS); Make sure name is mandatory or put a condition that string name must not be blank before filling the object into map. Hope it helps.
Full Answer
What is a map in Salesforce?
A map is a collection of key-value pairs where each unique key maps to a single value. Keys and values can be any data type—primitive types, collections, sObjects, user-defined types, and built-in Apex types. This table represents a map of countries and currencies: Map keys and values can contain any collection, and can contain nested collections.
How to take action in Salesforce from Experience Cloud Sites?
Take Action in Salesforce from Experience Cloud Sites Embed Dashboards Everywhere Edit General Settings for a Story Export and Share Insights Set Up the Tableau CRM Platform Customer 360 Global Profile Data Connection (Beta) Microsoft Dynamics CRM Connection Focus on Selected Data Return to a Previous View by Using History
What can I do with the Salesforce web app?
Control Access to Salesforce Objects and Fields Open Salesforce Records in New Browser Tabs Customize Onboarding with In-Dashboard Instructional Content Upgrade or Edit Formulas for Converted Recipes
What fields available on Salesforce Knowledge Reports?
Fields Available on Salesforce Knowledge Reports Chat Session Reports Report on Partners Report on Relationship Groups Enable the Account Owner Report Report on File Search Activity Report on Chatter Top 100 Feed Item Views with Interaction Count... Related Articles and Questions Reports Community Case Deflection from Discussions and Articles
How do I populate a map in Apex?
As with lists, you can populate map key-value pairs when the map is declared by using curly brace ( {} ) syntax. Within the curly braces, specify the key first, then specify the value for that key using => . For example: Map
How would you populate a map using SOQL?
Auto-Populating Map Entries from a SOQL Query The map key must be declared with an ID or String data type, and the map value must be declared as an sObject data type. This example shows how to populate a new map from a query. In the example, the SOQL query returns a list of accounts with their Id and Name fields.
How do I use a map in Salesforce?
How to use Map methods in SalesforceCreating a Map: Map
How do I add a value to a map in Salesforce?
If you want to add a map onto existing map, use putAll() method. finalMap. get('DETAILS'). putAll(subDetails);
How do I convert a list to a map in Salesforce?
Converting List to Map://Converting list to map.Map
How do I create a flow map in Salesforce?
From Setup, in the Quick Find box, enter Flows , then select Flows.Click New Flow. Select Screen Flow, then click Next. ... Click New Resource. ... For the API name, enter recordId . ... Add an element, then select Get Records.Enter a label that relates to the object you're selecting for your flow. ... Click Done.
What are the methods of map in Salesforce?
Map Methodsclear() Removes all of the key-value mappings from the map.clone() Makes a duplicate copy of the map.containsKey(key) Returns true if the map contains a mapping for the specified key.deepClone() ... equals(map2) ... get(key) ... getSObjectType() ... hashCode()More items...
What is map collection in Salesforce?
A Map is a collection of key-value pairs where each unique key maps to a single value. Keys and values can be any data type—primitive types, collections, sObjects, user-defined types, and built-in Apex types.
What is field mapping in Salesforce?
When you subscribe to a field in Salesforce to Salesforce, you map it to a field in your org. This mapping syncs updates between the fields for all shared records. Before you map fields, look at these important best practices.
How do I add one map to another map in Salesforce?
How do you find the value of a map?
HashMap get() Method in Java get() method of HashMap class is used to retrieve or fetch the value mapped by a particular key mentioned in the parameter. It returns NULL when the map contains no such mapping for the key.
What is a map in Apex?
A map is a collection of key-value pairs where each unique key maps to a single value. Keys and values can be any data type—primitive types, collections, sObjects, user-defined types, and built-in Apex types.
How many levels of nested collections can a map contain?
Map keys can contain up to only four levels of nested collections. To declare a map, use the Map keyword followed by the data types of the key and the value within <> characters. For example: You can use the generic or specific sObject data types with maps. You can also create a generic instance of a map.
Does Apex need to reference the algorithm?
Unlike Java, Apex developers do not need to reference the algorithm that is used to implement a map in their declarations (for example, HashMap or TreeMap ). Apex uses a hash structure for all maps.
Can you use map keys in the same order?
You can rely on the order being the same in each subsequent execution of the same code. However, we recommend to always access map elements by key. A map key can hold the null value. Adding a map entry with a key that matches an existing key in the map overwrites the existing entry with that key with the new entry.
Can you use generic data types with maps?
You can use the generic or specific sObject data types with maps. You can also create a generic instance of a map. As with lists, you can populate map key-value pairs when the map is declared by using curly brace ( {}) syntax. Within the curly braces, specify the key first, then specify the value for that key using =>.
How to tell if two maps are equal?
Two maps are equal if their key/value pairs are identical, regardless of the order of those pairs. The == operator is used to compare the map keys and values. The == operator is equivalent to calling the equals method, so you can call map1.equals (map2); instead of map1 == map2;.
Is a map key case sensitive?
Map keys of type String are case-sensitive. Two keys that differ only by the case are considered unique and have corresponding distinct Map entries. Subsequently, the Map methods, including put, get, containsKey, and remove treat these keys as distinct. For more information on maps, see Maps. Map Constructors.