To access the describe result for an sObject, use one of the following methods: 1. Call the getDescribe method on an sObject token. 2. Use the Schema sObjectType static variable with the name of the sObject. For example, Schema.sObjectType.Lead.
Schema.DescribeSObjectResult is the data type for an sObject describe result.
The following example uses the getDescribe method on an sObject token: 1Schema.DescribeSObjectResult dsr = Account.sObjectType.getDescribe();
The following example uses the Schema sObjectType static member variable: 1Schema.DescribeSObjectResult dsr = Schema.SObjectType.Account;
More details can be found on - https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_dynamic_describe_objects_understanding.htm
getDescribe() is used to to get the details of the field like the name of the field (API name), type of the field , length of the field etc, you can get the details and use it for comparing, firing different events and action based on the requirement in Apex.
For more details, refer : http://blog.jeffdouglas.com/2011/10/20/getting-salesforce-field-metadata-the-easy-way/
We use it to get meta data of sobject.
To access the describe result for an sObject, use one of the following methods:
1. Call the getDescribe method on an sObject token.
2. Use the Schema sObjectType static variable with the name of the sObject. For example, Schema.sObjectType.Lead.
Schema.DescribeSObjectResult is the data type for an sObject describe result.
The following example uses the getDescribe method on an sObject token:
1Schema.DescribeSObjectResult dsr = Account.sObjectType.getDescribe();
The following example uses the Schema sObjectType static member variable:
1Schema.DescribeSObjectResult dsr = Schema.SObjectType.Account;
More details can be found on - https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_dynamic_describe_objects_understanding.htm
getDescribe() is used to to get the details of the field like the name of the field (API name), type of the field , length of the field etc,
you can get the details and use it for comparing, firing different events and action based on the requirement in Apex.
For more details, refer : http://blog.jeffdouglas.com/2011/10/20/getting-salesforce-field-metadata-the-easy-way/
Harsh Aditya.
You can describe sObjects either by using tokens or the describeSObjects Schema method. You can get more info here (https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_dynamic_describe_objects_understanding.htm)
1) http://amitsalesforce.blogspot.com/search/label/Apex%20Describe
When to use
Example 1:-
http://amitsalesforce.blogspot.com/2015/12/how-to-get-recordtypeid-without-soql.html
Some time in code we need to get recordTypeId . For that generally we used SOQL like below :- You can try below Describe to get record Type Id without SOQL
Example 2:-
http://amitsalesforce.blogspot.com/2015/12/standard-field-record-id-prefix-decoder.html
If you want to get the Prefix of any object . Please try below code. Example 3:-
Apex Describe | Dynamic retrieval of object label & field label
http://amitsalesforce.blogspot.com/2015/11/apex-describe-dynamic-retrieval-of.html
Please let us know if this will help you
Thanks,
Amit Chaudhary