What is dynamic in Apex?

What is dynamic in Apex?

Dynamic Apex is a series of classes and methods that allow you to access the behind the scenes details of objects and fields. These classes are held within the “Schema” namespace.

What are apex variables?

An Apex variable is valid from the point where it is declared in code. So it is not allowed to redefine the same variable again and in code block. Also, if you declare any variable in a method, then that variable scope will be limited to that particular method only.

How do I run a dynamic query in SOQL?

To create a dynamic SOQL query at run time, use the database query method, in one of the following ways.

1. Return a single sObject when the query returns a single record: sObject s = Database.
2. Return a list of sObjects when the query returns more than a single record: List sobjList = Database.

How do I use variables in SOQL?

Using Apex Variables in SOQL and SOSL Queries

1. The search string in FIND clauses.
2. The filter literals in WHERE clauses.
3. The value of the IN or NOT IN operator in WHERE clauses, allowing filtering on a dynamic set of values.
4. The division names in WITH DIVISION clauses.
5. The numeric value in LIMIT clauses.

What does it mean to use dynamic soql in apex?

Dynamic SOQL. Dynamic SOQL refers to the creation of a SOQL string at run time with Apex code. Dynamic SOQL enables you to create more flexible applications. For example, you can create a search based on input from an end user or update records with varying field names. To create a dynamic SOQL query at run time,…

How to create a dynamic form in apex?

Now let’s go to apex and create an empty page. This page will hold the dynamic form and will also have two report regions. One is built on the table “TEST_CHILDREN” and the other report is built on an APEX collection to display the current items of the APEX Collection called children.

Which is the default value in Apex code?

Default value in field from Apex code. After API 20, it should automatically populate However there is known issue for same here, click here if it impacts you. If Default value of field is not getting populated by Apex then we have to use “Dynamic Apex”.

How is dynamic apex used to retrieve metadata?

In Interview question part 4, we discussed how dynamic Apex can be used to retrieve metadata information about Objects or fields on Object. While writing highly configurable code, there are situation where we want to avoid hardcoding picklist values and read it realtime from field.