Question 1

How do I handle transactions with RxJava-JDBC?

Accepted Answer

Use the beginTransaction, commit, and rollback methods, which allow composing transactional workflows within Observables. The README provides examples of both dependency-based and onNext transactions for controlled execution.

Question 2

RxJava-JDBC vs Hibernate for reactive programming?

Accepted Answer

RxJava-JDBC is lighter and integrates directly with RxJava for composable, non-blocking queries, while Hibernate is a full ORM with more features but less native reactive support. Choose RxJava-JDBC if you need fine-grained control and RxJava integration over Hibernate's comprehensive mapping and caching.

Question 3

How to map result sets to custom classes in RxJava-JDBC?

Accepted Answer

Use the autoMap method with annotated interfaces or concrete classes, where constructors match result set columns. The README shows examples with @Column annotations for automatic type conversion and mapping.

Question 4

Does RxJava-JDBC support connection pooling?

Accepted Answer

Yes, it integrates with HikariCP or custom connection pools via the Database.builder() method. This allows scalable database access, though you must call db.close() to release pool resources when done.

Question 5

Is RxJava-JDBC compatible with SQLite?

Accepted Answer

Yes, but with limitations: the README notes that SQLite write operations require single-connection usage and careful flattening of emissions to avoid SQLITE_INTERRUPT errors, making it less ideal for high-concurrency write scenarios.

Question 6

How to insert BLOBs using RxJava-JDBC?

Accepted Answer

Use the parameter method with byte arrays or InputStreams, and handle nulls with Database.NULL_BLOB or toSentinelIfNull. The README provides specific code snippets for inserting and reading BLOBs and CLOBs with simplified APIs.

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