Salesforce web services tutorial pdf

Otherwise, the case sObject is created without an ID. The upsert method is invoked with the populated case sObject, and the DML statement does the rest. The ID field is optional. To create a case record, omit this field. The Status, Subject, and Priority fields are updated. The subject is updated, even though its value matches the old subject. As a result, when the record is updated, the Origin field is cleared. One way is to specify parameters in the method for each field to update.

For example, you can create a method to update the priority of a case with this signature: updateCasePriority String priority. To update multiple fields, you can list all the desired fields as parameters. Another advantage of this approach is that no field is accidentally cleared because of not being included in the JSON string. The updateCaseFields method that you added to the CaseManager class uses this second approach.

This JSON has two field values: status and priority. The updateCaseFields method retrieves these values from the submitted JSON and are used to specify the fields to update in the object. The Status and Priority fields of the case record are updated to new values. Testing your Apex REST class is similar to testing any other Apex class—just call the class methods by passing in parameter values and then verify the results.

To simulate a REST request, create a RestRequest in the test method, and then set properties on the request as follows. The test results display in the Tests tab.

Apex REST methods can be used in managed and unmanaged packages. These APIs let you create, update, and delete records. However, the advantage of using Apex web services is that Apex methods can encapsulate complex logic. This logic is hidden from the consuming application. Also, the Apex class operations can be faster than making individual API calls, because fewer roundtrips are performed between the client and the Salesforce servers. With an Apex web service call, there is only one request sent, and all operations within the method are performed on the server.

The security context under which Apex web service methods run differs from the security context of Salesforce APIs. However, Apex web service methods enforce sharing rules when declared with the with sharing keyword.

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