I'm currently playing around with XText and EMF and I've come to a dead end.
I have an ecore model that I created using the diagram editor. I don't provide the XML representation; it should be clear from the example. Some of the relations are opposite to each other (like the parent-children relation).
This binding works perfectly fine when I create the instances programatically. Below, I show a test case that is successfully passed.
However, when I parse the model using XText, these opposite relations are not set. I can't find a way to fix this. The relations are strictly one-directional as they appear in the input file. Is there any way to force Xtext to set these? or am I supposed to resolve these manually?
Passing test
WordsFactory factory = WordsFactory.eINSTANCE;
// Prepare a simple dictionary hierarchy
Dictionary d = factory.createDictionary();
Synset s = factory.createAdjectiveSynset();
s.setDescription("A brief statement");
s.setExample("He didn't say a word.");
WordSense ws = factory.createAdjectiveWordSense();
Word w = factory.createWord();
w.setName("word");
ws.setWord(w);
s.getWordSenses().add(ws);
d.getWords().add(w);
d.getSynsets().add(s);
// Now check the bidirectional links
Assert.assertTrue(ws.getSynset() == s);
Assert.assertTrue(w.getSenses().get(0) == ws);
XMI representation of this example
<?xml version="1.0" encoding="ASCII"?>
<words:Dictionary xmi:version="2.0" xmlns:xmi="http://www.omg.org/XMI" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:words="http://www.example.com/dstahr">
<words senses="//@synsets.0/@wordSenses.0" name="word"/>
<synsets xsi:type="words:AdjectiveSynset" description="A brief statement" example="He didn't say a word.">
<wordSenses xsi:type="words:AdjectiveWordSense" word="//@words.0"/>
</synsets>
</words:Dictionary>
Grammar definition (some unimportant rules removed)
grammar ocs_assignment.dsl.DSL with org.eclipse.xtext.common.Terminals
import "platform:/resource/ocs_assignment.model/model/words.ecore"
import "http://www.eclipse.org/emf/2002/Ecore" as ecore
Dictionary returns Dictionary:
{Dictionary}
'dict' name=EString
('add words' '[' words+=Word* ( "," words+=Word)* ']')?
synsets+=Synset*
;
Synset returns Synset:
AdjectiveSynset | NounSynset | VerbSynset;
WordSense returns WordSense:
AdjectiveWordSense | NounWordSense | VerbWordSense;
Word returns Word:
name=EString;
EString returns ecore::EString:
STRING | ID;
NounWordSense returns NounWordSense:
word=[Word|EString];
NounSynset returns NounSynset:
{NounSynset}
'(N)' name=EString
'{'
'content' '[' (wordSenses+=NounWordSense ( "," wordSenses+=NounWordSense)*)? ']'
'description' description=EString
'example' example=EString
('hyponym' hyponym=[Synset|EString])?
('hypernym' hypernym=[Synset|EString])?
('similarTo' '(' similarTo+=[Synset|EString] ( "," similarTo+=[Synset|EString])* ')' )?
'}';
Parsed file
dict dict
add words test1 test2 test3
(N) test1
{
content [ test1 test2 ]
description "test1"
example "test1"
}
(N) test2
{
content [ test3 ]
description "test2"
example "test2"
hypernym test1
}
XMI representation of the parsed file (missing references for Words)
<?xml version="1.0" encoding="ASCII"?>
<words:Dictionary xmi:version="2.0" xmlns:xmi="http://www.omg.org/XMI" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:words="http://www.example.com/dstahr">
<words name="test1"/>
<words name="test2"/>
<words name="test3"/>
<synsets xsi:type="words:NounSynset" description="test1" example="test1" name="test1">
<wordSenses xsi:type="words:NounWordSense">
<word href="importedFile1.wdsl#xtextLink_::0.1.0.2.0::1::/0"/>
</wordSenses>
</synsets>
<synsets xsi:type="words:NounSynset" description="test2" example="test2" name="test2">
<hypernym xsi:type="words:AdjectiveSynset" href="importedFile1.wdsl#xtextLink_::0.1.1::1::/21"/>
<wordSenses xsi:type="words:NounWordSense">
<word href="importedFile1.wdsl#xtextLink_::0.1.1.2.0::1::/0"/>
</wordSenses>
</synsets>
</words:Dictionary>