Lucene 4.0 overrides final method tokenStream

Question

For different reasons I have to work with the latest release of Lucene's API.

The API isn't well documented yet so I find myself not able to perform a simple addDocument()

Here is the Writer initialization:

analyzer = new StopAnalyzer(Version.LUCENE_40);
config = new IndexWriterConfig(Version.LUCENE_40, analyzer);
writer = new IndexWriter(FSDirectory.open(new File(ConfigUtil.getProperty("lucene.directory"))), config);

The simple toDocument method:

public static Document getDocument(User user) {
    Document doc = new Document();
    FieldType storedType = new FieldType();
    storedType.setStored(true);
    storedType.setTokenized(false);

    // Store user data
    doc.add(new Field(USER_ID, user.getId().toString(), storedType));
    doc.add(new Field(USER_NAME, user.getFirstName() + user.getLastName(), storedType));

    FieldType unstoredType = new FieldType();
    unstoredType.setStored(false);
    unstoredType.setTokenized(true);

    // Analyze Location
    String tokens = "";
    if (user.getLocation() != null && ! user.getLocation().isEmpty()){
        for (Tag location : user.getLocation()) tokens += location.getName() + " ";
        doc.add(new Field(USER_LOCATION, tokens, unstoredType));
    }
}

When running:

Document userDoc = DocumentManager.getDocument(userWrap);
IndexAccess.getWriter().addDocument(userDoc);

This is the error message I get:

class org.apache.lucene.analysis.util.ReusableAnalyzerBase overrides final method tokenStream.(Ljava/lang/String;Ljava/io/Reader;)Lorg/apache/lucene/analysis/TokenStream;

It may be a simple matter but I cannot find any reference to help with this problem. I'm using a default analyzer and I followed a tutorial in order to avoid the deprecated Field.Index.ANALYZED

Answer 1

This is due to some kind of JAR version mismatch. You may be depending on a contrib JAR that in turn depends on different version of Lucene. Try to get a hold of the exact dependency set at runtime and look for any version mismatches.