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Add custom field while inferring [message #1450308]

Wed, 22 October 2014 10:00

Tobias Wink

Messages: 20
Registered: September 2014

Junior Member

Hi,

I'm back with another problem. Maybe I'm dumb, but I'm not possible to create a field that is not part of my DSL-file.

I want to generate a default primary key attribute if no primary key is defined in my DSL-file. To generate this default primary key I just called the toField-Method of JvmTypesBuilder like with the normal fields.

My Xtend-Code Snippet is (element is an AbstractElement a ):

val identity = toField("identity", getTypeForName("FQN of the appropriate class", element))

While generating the following error occurs:
ERROR org.eclipse.xtext.xbase.jvmmodel.JvmTypesBuilder - The source element must be part of the source tree.
java.lang.IllegalArgumentException: The source element must be part of the source tree.
at org.eclipse.xtext.xbase.jvmmodel.JvmTypesBuilder.isValidSource(JvmTypesBuilder.java:635)
at org.eclipse.xtext.xbase.jvmmodel.JvmTypesBuilder.associate(JvmTypesBuilder.java:620)
at org.eclipse.xtext.xbase.jvmmodel.JvmTypesBuilder.toField(JvmTypesBuilder.java:567)
at org.eclipse.xtext.xbase.jvmmodel.JvmTypesBuilder.toField(JvmTypesBuilder.java:552)

In the generated Java-Class everything looks right. But the Execption is irritating me. What I'm doing wrong?

PS: I'm using Xtext 2.7.2

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