Mailing List Archive

Hi,

I am using Lucene v5.5.0

We are indexing a document into Lucene v5.5 using following code and trying to search for the document with a given Long value but the search does not yield any results.



1. This is how we are creating a document using Lucene v5.5


/**
* Makes a Lucene document for an Asset.
* <p>
* The document has two fields:
* <ul>
* <li><code>AssetId</code>--Id of asset, as a stored, untokenized
* field; and
* <li><code>reader</code>--Reader for asset's text content to be indexed;
*/
public static Document createDocumentFromFile(long assetId, Reader reader)
throws java.io.FileNotFoundException {

// make a new, empty document
Document doc = new Document();

// Add assetId as a field named "AssetId". AssetId will be indexed and stored
// but does not need to be tokenised as it will be string representation
// of number hence without any whitechars.
doc.add(new LongField("AssetId", assetId, Field.Store.YES));

// Add the contents to a field named "TextContent". Specify a
// Reader, so that the text of the file is tokenized and indexed, but not
// stored.
doc.add(new TextField("TextContent", reader));

// return the document
return doc;
}


2. Adding a document....

/*
* Adds a Lucene Document to the index
*/
protected void addDocument(Document doc) throws IOException {
indexWriter.addDocument(doc);
commit();
}

private void commit() throws IOException {
indexWriter.commit();
long start = System.nanoTime();
//searcherManager.maybeRefresh();
searcherManager.maybeRefreshBlocking();
long end = System.nanoTime();
logger.trace("IndexReader reopen in (us): " + (end-start)/1000 );
}



3. Searching for a document...... for instance search for document with AssetId = 12


/*
* Returns Lucene document corresponding to the given AssetId
*/
private Document getAssetDocument(long assetId) {
final Document[] assetDoc = new Document[1];
try {
/*
* Query to find a lucene document based on AssetId field
*/
QueryParser assetIdQueryparser = new QueryParser("AssetId", standardAnalyzer);
Query query = assetIdQueryparser.parse("" + assetId);
query(query,Integer.MAX_VALUE, new TextQueryResultCollector() {
@Override
public void collect(TopDocs searchResult, IndexSearcher searcher)
throws IOException {
ScoreDoc[] s = searchResult.scoreDocs;
if (s != null && s.length > 0) {
assetDoc[0] = searcher.doc(searchResult.scoreDocs[0].doc);
}
}
});
} catch (Exception e) {
logger.error("Error Searching text index on field AssetId", e);
}
return assetDoc[0];

}




protected void query(Query query, int maxResults, TextQueryResultCollector collector ) throws IOException {
IndexSearcher searcher = null;
try {
searcher = searcherManager.acquire();
//Represents hits returned by indexSearcher.search(Query,int)
TopDocs topDocs = searcher.search(query, maxResults);
collector.collect(topDocs, searcher);
} finally {
try {
searcherManager.release(searcher);
} catch (IOException e) {
logger.error("Error querying Text index." , e);
}
}

}

Can you please help in figuring out why searching a org.apache.lucene.document.LongField (with Lucene v5.5) using the org.apache.lucene.queryparser.classic.QueryParser does not yield results whereas a similar query parser when used for searching a TextField yields results ?
Are LongField(s) indexed in a different manner ?

Can you please help why the search does not yield results in Lucene v5.5 ?

Thanks,
Jaspreet Kaur