Here’s a few books that we cover and discuss in the PBE book that you might find of interest.
Case Study Related
Analysis Patterns: Reusable Object Models: provides a set of patterns for using and manipulating domain related objects.
Core J2EE Patterns: Best Practices and Design Strategies (2nd Edition): a set of patterns that focuses on developing Java EE applications. Although the patterns are based on an older version of the JEE specification, they still provide useful guidance and can easily be updated as necessary.
Enterprise Integration Patterns: Designing, Building, and Deploying Messaging Solutions: provides a set of patterns to integrate different systems together.
Design Patterns: Elements of Reusable Object-Oriented Software: core object design patterns.