Taking Care – Error Handling - Applied SOA Patterns on the Oracle Platform - page 488

much easier, and we used the last figure for building SQL insert statements for data
import.
Now, we can see that handling exceptions in complex compositions will be inevitably
complex as well. Similar to security, this complexity can be restrained by proper layering
and application of SOA patterns as follows:
• Policy Centralization (fault policies first of all) and Metadata Centralization
(steps 1 , 2 , and 3 in the preceding figure)
• Enterprise Repository and Inventory Endpoint
• Logic Centralization (with focus on exception handling)
• Exception Shielding (in assistance to service security)
Now, we are ready to formalize common design rules for taming this complexity.