<!-- all classes under webapp.sample.service package hierarchy. Transaction boundary is the service layer -->
<aop:advisorpointcut="execution(public * com.m3.hqmr.service..*.*(..)) and @target(org.springframework.stereotype.Service)"advice-ref="txAdvice" />
This configuration uses AOP(Aspect Oriented Programming) which is adding new processing without changing original source. AOP is a mechanism for “cross-cutting issue” such as outputting trace log, managing transaction or etc.
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