Basically a schema class is used to make a dynamic application. Schema class deals with both bulk and single record means you can fetch all objects' names at once or a single object name. This namespace contains some classes and their methods to provide metadata information of Schema. Let's take an Example to display a list of all sObjects in the Visualforce page.įirst we have to write an Apex Controller to fetch a list of all objects and after that use this Controller in the VF page to display a list of objects. Schema is a Namespace which is referred as Database. Syntax- Schema.DescribeTabSetResult tabInfo = scribeTabs() This method is used to return information about Custom and Standard apps available to current users. Syntax- public static List describeDataCategoryGroups(List sObjectNames) 4. This method is used to return a list of categorized groups linked with a particular object or specified object.
Syntax- Schema.DescribeSObjectResult Results = scribeSObjects(new String) 3. This method returns a list of fields and properties of a particular sObject or array of sObjects. Syntax- Map gd = Schema.getGlobalDescribe() 2. This method returns a map of all objects in org with names(keys) and tokens(values) for both Custom and Standard objects.This method is dynamic and it is generated at the run time of the currently available sObjects in the Org. Like this, there are so many classes and their methods available in Schema class which we can use according to our needs and purpose.ĭon't forget to check out: Creating A Multi-Select Picklist As Checkbox In Salesforce Visualforce Pages Consideration while using Schema Class:Īll methods used in Schema class are Static, Some of them are as: 1. One of the best parts of Using Schema Class is you can query any object and there fields without using any Soql query.you can directly interact with the database using schema methods.įor example: ChildRelationship class contains methods which describe the number of child relationships and the child objects related to a particular parent object. It prompts you to fill in the details of the object.Schema is a Namespace which is referred as Database. Drag the element named Object into the canvas. Secondly, drag and drop the file in the working area as shown in the picture. The process of Schema Builder in Salesforce. We can create new objects using the schema builder. Below, we are discussing the procedure of Salesforce Schema Builder: Firstly go to the setup menu and then click on the Schema Builder. In the following screenshot, we can see various actions we can take on the custom schema objects.
We can only modify the custom objects and cannot modify the standard objects as they are part of the Salesforce platform structure. We can work on various schema objects by showing them in the canvas in the right pane. We have selected three objects named - Account, Delivery Schedule and Delivery Location as shown in the following screenshot.
The Element tab represents fields and relationships while the Objects tab represents the standard as well as custom objects. We can see the various objects by selecting them form the left pane. Accessing Schema Builderįrom Setup Home, navigate to Objects and Fields → Object Manager → Schema Builder. It shows all the relevant details like - field values, data types, relationship with directions etc. Schema builder has a drag and drop interface which is used to perform all the activities. And just not viewing, but we can also design, modify and implement new data models using schema builder. The various objects and their relationships of a Salesforce application can be easily viewed using the Schema builder.
0 kommentar(er)
