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import java.lang.annotation.*;
public aspect DeclareAnnotation {
declare @type : org.xyz.model..* : @BusinessDomain;
declare @method : public * BankAccount+.*(..) : @Secured(role="supervisor");
declare @field : * DAO+.* : @Persisted;
declare @constructor : BankAccount+.new(..) : @Secured(role="supervisor");
declare warning : staticinitialization(@BusinessDomain *)
: "@BusinessDomain";
declare warning : execution(@Secured * *(..)) : "@Secured";
declare warning : set(@Persisted * *) : "@Persisted";
declare warning : initialization(@Secured *.new(..)) : "@Secured";
public static void main(String[] args) throws Exception {
Class bAcc = BankAccount.class;
java.lang.reflect.Method credit = bAcc.getDeclaredMethod("credit");
Secured secured = credit.getAnnotation(Secured.class);
if (!secured.role().equals("supervisor")) {
throw new RuntimeException("BankAccount.credit should have @Secured(role=supervisor) annotation");
}
}
}
@interface BusinessDomain {}
@Retention(RetentionPolicy.RUNTIME)
@interface Secured {
String role() default "";
}
@interface Persisted {}
class BankAccount {
public void credit() {}
public void debit() {}
protected void transfer() {}
}
class ExecutiveBankAccount extends BankAccount {
public ExecutiveBankAccount() {
super();
}
public void interest() {}
protected void commission() {}
}
class DAO {
int x = 5;
}
class SubDAO extends DAO {
int y = 6;
}
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