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How to create annotations with attributes [message #903858]

Sun, 26 August 2012 12:32

Eclipse User

Hi, I would like to create some JPA annotations. For example @Column(name="name"). So far I create the @Column annotation like this:

val field = f.toField(f.name, f.type) [
	annotations += f.toAnnotation("javax.persistence.Column") => [
            //?
	]
]

One of the seven language examples uses createJvmStringAnnotationValue. But I couldn't find this method anywhere.

Regards
Roger

Re: How to create annotations with attributes [message #903859 is a reply to message #903858]

Sun, 26 August 2012 12:39

Eclipse User

Hi

have a look at the class org.eclipse.xtext.common.types.TypesFactory

Re: How to create annotations with attributes [message #904083 is a reply to message #903859]

Mon, 27 August 2012 14:06

Eclipse User

I tried but I can make no sense of this API. So far I get @Column("Name") but I would like tot get @Column(test="Name"). My code looks like this:

val field = f.toField(f.name, f.type) [		
	annotations += f.toAnnotation("javax.persistence.Column") => [
	values += createJvmStringAnnotationValue() => [
	    values += "Name"
	]
   ]
]

I would have expected that the following code should work:

val field = f.toField(f.name, f.type) [		
	annotations += f.toAnnotation("javax.persistence.Column") => [
	values += createJvmStringAnnotationValue() => [
	    values += "Name"
            valueName = "test"   // but valueName ist read only
	]
   ]
]

But valueName is read only.

Regards
Roger

[Updated on: Mon, 27 August 2012 14:06] by Moderator

Re: How to create annotations with attributes [message #904091 is a reply to message #904083]

Mon, 27 August 2012 14:28

Eclipse User

Ok,

the following works:

val a = f.toAnnotation("javax.persistence.Column")
val v = createJvmStringAnnotationValue
val op = a.annotation.members.filter(typeof(JvmOperation)).filter(o|o.simpleName == "name").head
v.operation = op
v.values += f.name
a.values += v

Must it really be that complicated ?

Regards
Roger

Re: How to create annotations with attributes [message #904094 is a reply to message #904091]

Mon, 27 August 2012 14:31

Eclipse User

http://www.eclipse.org/forums/index.php/mv/msg/271349/773704/#msg_773704

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