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How to generate a field with a generic type [message #903769]

Sat, 25 August 2012 17:49

Roger Gilliar

Messages: 40
Registered: March 2010

Member

Hi,

I'm using the following code to generate a field:

val mapType = entity.newTypeRef(typeof(Map))
members += entity.toField("columnValues", mapType) [
	setInitializer [
		append('''new HashMap<«entity.name»,String>()''')
	]
]

That gives me:

 private Map<?,?> columnValues = new HashMap<Customer,String>();

But I would like to have:

 private Map<Customer,String> columnValues = new HashMap<Customer,String>();

And I would like to generate the import statement for the HashMap.

Is this possible ?

Regards
Roger

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Re: How to generate a field with a generic type [message #903772 is a reply to message #903769]

Sat, 25 August 2012 18:52

Christian Dietrich

Messages: 13357
Registered: July 2009

Senior Member

Hi,

what about

val mapType = entity.newTypeRef(typeof(Map), newTypeRef, entity.newTypeRef(typeof(String)))

~Christian

Need professional support for Xtext, Xpand, EMF?
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Re: How to generate a field with a generic type [message #903775 is a reply to message #903772]

Sat, 25 August 2012 19:35

Roger Gilliar

Messages: 40
Registered: March 2010

Member

Hi,

thanks a lot. The generic type is generated but how do I generate the import ?

Regards
Roger

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Re: How to generate a field with a generic type [message #903781 is a reply to message #903775]

Sat, 25 August 2012 21:26

Christian Dietrich

Messages: 13357
Registered: July 2009

Senior Member

setInitializer [
		append('''new java.util.HashMap<«entity.name»,String>()''')
	]

setInitializer [
		imports.add("java.util.HashMap")
		append('''new HashMap<«entity.name»,String>()''')	
	]

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Re: How to generate a field with a generic type [message #903837 is a reply to message #903781]

Sun, 26 August 2012 06:46

Roger Gilliar

Messages: 40
Registered: March 2010

Member

The import statement is ignored. At least in the 2.3.1 version I'm using here.

setInitializer [
		imports.add("java.util.HashMap")
		append('''new HashMap<«entity.name»,String>()''')	
]

Regards
Roger

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Re: How to generate a field with a generic type [message #903840 is a reply to message #903837]

Sun, 26 August 2012 08:05

Christian Dietrich

Messages: 13357
Registered: July 2009

Senior Member

setInitializer [
		append("new ").append(entity.newTypeRef(typeof(HashMap)).type)
		.append('''<«entity.name»,String>()''')	
	]

Need professional support for Xtext, Xpand, EMF?
Go to: https://www.itemis.com/en/xtext/
Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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