Configuring Annotations to be RUNTIME Retention By Default (without individual @Retention)
Is it possible to have a configuration where all Annotations of a given name or type are automatically RetentionPolicy.RUNTIME?
I came across a poblem where I need to use reflection at runtime to search for certain Annotations. But those are common Annotations scattered all over the app, such as @Service or @Transactional, and I can't go one by one and add @RetentionPolicy to each one, it would be too long.
java annotations
asked Nov 21 '18 at 16:52
gene b.gene b.
1,67352554
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Is it possible to have a configuration where all Annotations of a given name or type are automatically RetentionPolicy.RUNTIME?
I came across a poblem where I need to use reflection at runtime to search for certain Annotations. But those are common Annotations scattered all over the app, such as @Service or @Transactional, and I can't go one by one and add @RetentionPolicy to each one, it would be too long.
java annotations
asked Nov 21 '18 at 16:52
gene b.gene b.
1,67352554
add a comment |
Is it possible to have a configuration where all Annotations of a given name or type are automatically RetentionPolicy.RUNTIME?
I came across a poblem where I need to use reflection at runtime to search for certain Annotations. But those are common Annotations scattered all over the app, such as @Service or @Transactional, and I can't go one by one and add @RetentionPolicy to each one, it would be too long.
java annotations
asked Nov 21 '18 at 16:52
gene b.gene b.
1,67352554
Is it possible to have a configuration where all Annotations of a given name or type are automatically RetentionPolicy.RUNTIME?
I came across a poblem where I need to use reflection at runtime to search for certain Annotations. But those are common Annotations scattered all over the app, such as @Service or @Transactional, and I can't go one by one and add @RetentionPolicy to each one, it would be too long.
java annotations
java annotations
asked Nov 21 '18 at 16:52
gene b.gene b.
1,67352554
asked Nov 21 '18 at 16:52
gene b.gene b.
1,67352554
asked Nov 21 '18 at 16:52
gene b.gene b.
1,67352554
asked Nov 21 '18 at 16:52
gene b.gene b.
1,67352554
asked Nov 21 '18 at 16:52
gene b.gene b.
1,67352554
1,67352554
add a comment |
add a comment |
1 Answer
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The Java Language Specification, section 9.6.4.2. @Retention states:
If T does not have a (meta-)annotation
mthat corresponds tojava.lang.annotation.Retention, then a Java compiler must treat T as if it does have such a meta-annotationmwith an element whose value isjava.lang.annotation.RetentionPolicy.CLASS.
As you can see, it is a strict requirement that missing annotation is same as @Retention(RetentionPolicy.CLASS).
If you need @Retention(RetentionPolicy.RUNTIME), then you must explicitly specify that.
answered Nov 21 '18 at 16:58
AndreasAndreas
75.5k461122
add a comment |
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1 Answer
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1 Answer
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The Java Language Specification, section 9.6.4.2. @Retention states:
If T does not have a (meta-)annotation
mthat corresponds tojava.lang.annotation.Retention, then a Java compiler must treat T as if it does have such a meta-annotationmwith an element whose value isjava.lang.annotation.RetentionPolicy.CLASS.
As you can see, it is a strict requirement that missing annotation is same as @Retention(RetentionPolicy.CLASS).
If you need @Retention(RetentionPolicy.RUNTIME), then you must explicitly specify that.
answered Nov 21 '18 at 16:58
AndreasAndreas
75.5k461122
add a comment |
The Java Language Specification, section 9.6.4.2. @Retention states:
If T does not have a (meta-)annotation
mthat corresponds tojava.lang.annotation.Retention, then a Java compiler must treat T as if it does have such a meta-annotationmwith an element whose value isjava.lang.annotation.RetentionPolicy.CLASS.
As you can see, it is a strict requirement that missing annotation is same as @Retention(RetentionPolicy.CLASS).
If you need @Retention(RetentionPolicy.RUNTIME), then you must explicitly specify that.
answered Nov 21 '18 at 16:58
AndreasAndreas
75.5k461122
add a comment |
The Java Language Specification, section 9.6.4.2. @Retention states:
If T does not have a (meta-)annotation
mthat corresponds tojava.lang.annotation.Retention, then a Java compiler must treat T as if it does have such a meta-annotationmwith an element whose value isjava.lang.annotation.RetentionPolicy.CLASS.
As you can see, it is a strict requirement that missing annotation is same as @Retention(RetentionPolicy.CLASS).
If you need @Retention(RetentionPolicy.RUNTIME), then you must explicitly specify that.
answered Nov 21 '18 at 16:58
AndreasAndreas
75.5k461122
The Java Language Specification, section 9.6.4.2. @Retention states:
If T does not have a (meta-)annotation
mthat corresponds tojava.lang.annotation.Retention, then a Java compiler must treat T as if it does have such a meta-annotationmwith an element whose value isjava.lang.annotation.RetentionPolicy.CLASS.
As you can see, it is a strict requirement that missing annotation is same as @Retention(RetentionPolicy.CLASS).
If you need @Retention(RetentionPolicy.RUNTIME), then you must explicitly specify that.
answered Nov 21 '18 at 16:58
AndreasAndreas
75.5k461122
answered Nov 21 '18 at 16:58
AndreasAndreas
75.5k461122
answered Nov 21 '18 at 16:58
AndreasAndreas
75.5k461122
answered Nov 21 '18 at 16:58
AndreasAndreas
75.5k461122
75.5k461122
add a comment |
add a comment |
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