C M P 2 . 0
Overriding the EJB QL to SQL Mapping
The EJB QL to SQL mapping can be overridden in the jbosscmp jdbc.xml file. The finder or
ejbSelect is still required to have an EJB QL declaration in the ejb jar.xml file, but the ejb ql
element can be left empty. Currently the SQL can be overridden with JBossQL, which
removes som of the restricutions of EJB QL and adds support for a ORDER BY clause,
DynamicQL, which allows for the runtime declaration and execution of EJB QL and
JBossQL queries, DeclaredSQL, which supports the declaration of the exact SQL for a
query, or a BMP style custom ejbFind method, which allows the programmer to code the
query by hand. All of these overrides are discussed in Chapter 5 of the JBossCMP
Documentation.
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