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[CAP Java 3.0] Explain removal of classic MTX in migration guide #942

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May 15, 2024
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[CAP Java 3.0] Explain removal of classic MTX in migration guide #942

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27 changes: 27 additions & 0 deletions java/migration.md
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Expand Up @@ -44,6 +44,19 @@ The Production Profile now defaults to `cloud`. This ensures that various proper

[Learn more about the Production Profile.](developing-applications/configuring#production-profile){.learn-more}

### Removed MTX Classic Support

Support for classic MTX (@sap/cds-mtx) has been removed. For multitenancy using streamlined MTX (@sap/cds-mtxs) is mandatory.
If you are still using MTX Classic refer to the [multitenancy migration guide](../guides/multitenancy/old-mtx-migration).

In addition the deprecated MtSubscriptionService API, which has been superseeded by the DeploymentService API, has been removed.
As part of this change the compatibility mode for the MtSubscriptionService API has been removed. Besides the removal of the Java APIs this includes the following behavioural changes:

- During unsubscribe the tenant's content (e.g. HDI container) is now deleted by default when using the new DeploymentService API.
- The HTTP-based tenant upgrade APIs provided by the CAP Java app have been removed. This includes the following endpoints:
- `/mt/v1.0/subscriptions/deploy/**` (GET & POST)
- `/messaging/v1.0/em/<tenant>` (PUT)

### Adjusted Property Defaults

Some property defaults have been adjusted:
Expand Down Expand Up @@ -77,12 +90,26 @@ Some property defaults have been adjusted:

- `cds.sql.supportedLocales`
- `cds.security.mock.users.<key>.unrestricted`
- `cds.multiTenancy.mtxs.enabled`
- `cds.multiTenancy.compatibility.enabled`
- `cds.multiTenancy.security.deploymentScope`

### Removed Java APIs

- Removed deprecated classes:
- `com.sap.cds.services.environment.ServiceBinding`
- `com.sap.cds.services.environment.ServiceBindingAdapter`
- `com.sap.cds.services.mt.MtSubscriptionService`
- `com.sap.cds.services.mt.MtGetDependenciesEventContext`
- `com.sap.cds.services.mt.MtSubscribeEventContext`
- `com.sap.cds.services.mt.MtAsyncSubscribeEventContext`
- `com.sap.cds.services.mt.MtAsyncSubscribeFinishedEventContext`
- `com.sap.cds.services.mt.MtDeployEventContext`
- `com.sap.cds.services.mt.MtAsyncDeployEventContext`
- `com.sap.cds.services.mt.MtAsyncDeployStatusEventContext`
- `com.sap.cds.services.mt.MtUnsubscribeEventContext`
- `com.sap.cds.services.mt.MtAsyncUnsubscribeEventContext`
- `com.sap.cds.services.mt.MtAsyncUnsubscribeFinishedEventContext`

- Removed deprecated methods:
- `com.sap.cds.services.request.ModifiableUserInfo.setUnrestrictedAttributes`
Expand Down