Adapter Service Processing

The following diagram illustrates how Adapter for Apache HBase processes adapter services at run time.
Step Description
1 An Integration Server client, typically using a flow or Java service, invokes a Adapter for Apache HBase service on Integration Server to perform an operation on a HBase.

You configured the adapter service earlier using Designer.

2 The adapter service gets a connection from the service's connection pool.

Adapter connections contain connection information of the database.

3 The adapter service uses the Apache HBase Java API to connect to the database.

You created and enabled the adapter connection earlier using Integration Server Administrator.

4 All adapter services performs the CRUD operation against Apache HBase.
  • For Retrieve, Delete, and Upsert services, the adapter service executes a query statement against the database.
5
Depending on the adapter service type, such as a Retrieve service, the adapter service may return data to Integration Server.

  • If the operation is successful, the service returns the output from the Apache HBase Java API, if applicable.

  • If the operation is unsuccessful, the service returns an error such as an AdapterException. If the database throws an exception while performing the adapter service's operation, the adapter passes the exception to the Integration Server logs.

    For more information about how the adapter handles exceptions, see Overview of Logging and Exception Handling.