You want to log a message before any method in com.example.repository package is called, but only for methods starting with save. Which @Before pointcut expression correctly matches this?

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Spring Boot - Aspect-Oriented Programming

You want to log a message before any method in com.example.repository package is called, but only for methods starting with save. Which @Before pointcut expression correctly matches this?

A@Before("execution(* com.example.repository.save*(..))")

B@Before("execution(* com.example.repository.*save*(..))")

C@Before("execution(* com.example.repository..save*(..))")

D@Before("execution(* com.example.repository.*.save*(..))")

Step-by-Step Solution

Solution:

Step 1: Understand pointcut syntax for package, class, and method
To match methods starting with 'save' in any class of the com.example.repository package, use execution(* com.example.repository.*.save*(..)). However, if you want to include subpackages as well, use '..' instead of a single '*'.
Step 2: Analyze each option
A matches only methods named save* in the package directly (no class wildcard), B is invalid syntax, C matches methods in any class in the package but not subpackages, D matches methods starting with save in the package and all subpackages.
Final Answer:
@Before("execution(* com.example.repository..save*(..))") -> Option C
Quick Check:
package..save*(..) = matches package and subpackages [OK]

Quick Trick: Use package..save* to include subpackages and methods starting with save [OK]

Common Mistakes:

Using incorrect wildcards or dots in method name
Matching subpackages unintentionally
Misplacing wildcards in pointcut expression

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You want to log a message before any method in com.example.repository package is called, but only for methods starting with save. Which @Before pointcut expression correctly matches this?

Step 1: Understand pointcut syntax for package, class, and method

Step 2: Analyze each option

Final Answer:

Quick Check:

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