JBossCMP

JBossCMP is the JBoss Application Server implementation of the CMP 2.x specification.

Basic documentation such as getting started info, O/R mapping, basic read-ahead configurations, primary key generation, EJBQL and JBossQL, etc are covered in our free on-line documentation in JBoss Administration and Development Guide 3.2.3, Chapter 11. Here you can find features that are not covered there or some other notes to the covered subjects.

'cmp2.x jdbc2 pm' entity container (since 3.2.5)

Caching and locking

• Caching and commit options

• Locking

• Cache invalidation

• Cache: flush, age-out, store-not-flushed

• Read-only data

Query Language

• EJBQL2.1 (since 3.2.4)

• SQL92 compiler and pluggable QL compilers (since 3.2.4)

Optimized loading

• left-join read-ahead (since 3.2.4)

• Lazy ResultSet loading (since 3.2.6RC1)

Dirty checking

• check-dirty-after-get (since 3.2.3)

• CMPFieldStateFactory (since 3.2.3)

Other optimizations

• Optimizing instance creation

• INSERT after ejbPostCreate (since 3.2.2RC3)

• batch-cascade-delete (since 3.2.3)

• clean-read-ahead-on-load (since 3.2.5RC1)

• call-ejb-store-on-clean (since 3.2.6RC2)

• max-keys-in-delete (since 3.2.8SP1, 4.0.4GA)

O/R mapping

• user-type-mapping (since 3.2.2)

• PreparedStatement parameter setters and ResultSet readers (since 3.2.6RC1)

HiLo Key Generator

Related Topics

• Why should I AvoidBMP?

• AutomaticDatabaseStructureUpdate (since 3.2.4RC2)