Access extension properties via Microsoft Graph SDK for Java - azure

Question

I have a custom user property implemented via the Extension Property on my directory. The property is visible in the graph explorer:
https://graph.microsoft.com/v1.0/users/6dc2cecc-a3dd-4c18-ba7a-38b70db82e95?$select=extension_8655692d0a034443a9b32af6caa95f56_favColour
returns
{
"#odata.context": "https://graph.microsoft.com/v1.0/$metadata#users(extension_8655692d0a034443a9b32af6caa95f56_favColour)/$entity",
"extension_8655692d0a034443a9b32af6caa95f56_favColour": "foooooo"
}
I can also see it in the raw response in the User object returned by com.microsoft.graph.models.extensions.User#getRawObject when using MS Graph Java SDK, but the User class doesn't seem to have any API for accessing this kind of properties. Best I can do is manipulating the raw response. Is there any better way of accessing extension properties without touching the raw response?

Answer 1

Extension properties can be accessed by ExtensionPropertyCollectionPage class
If you are using User Class, you can try with below code inside the User Class:
final User user = graphClient.me()
.buildRequest()
.select("extension_8655692d0a034443a9b32af6caa95f56_favColour")
.get();

Answer 2

The User entity really doesn't contain the extension property. Then I try to find answer from the c# SDK, as I tested by c# SDK, I can get the extension claim from the User.Result.AdditionalData, so I came back to Java SDK and I found the property additionalDataManager, then I test it and get the result.
User user = graphClient.users("198a7xxxxx19ce1c").buildRequest().get();
String res = user.additionalDataManager().get("extension_3d3xxxxe8707e_tiny_custom_prop").toString();
=================================Update=================================
It's ok for me to get it
UserCollectionPage users = graphClient.users()
.buildRequest().select("extension_3d35xxx7e_tiny_custom_prop")
.get();
String temp = users.getCurrentPage().get(1).additionalDataManager().get("extension_3d35xxx07e_tiny_custom_prop").toString();
And if you find it not working for you, maybe you can try to use beta version for calling the api.
<repositories>
<repository>
<id>sonatype-snapshot</id>
<name>Sonatype Snapshot</name>
<url>https://oss.sonatype.org/content/repositories/snapshots</url>
</repository>
</repositories>
<dependency>
<groupId>com.microsoft.graph</groupId>
<artifactId>microsoft-graph-beta</artifactId>
<version>0.33.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.azure</groupId>
<artifactId>azure-identity</artifactId>
<version>[1.3,)</version>
</dependency>