Null check on Lucene documents, fix documents search query

docs-core/src/main/java/com/sismics/docs/core/dao/jpa/DocumentDao.java

@@ -145,10 +145,9 @@ public class DocumentDao {
         Map<String, Object> parameterMap = new HashMap<String, Object>();
         List<String> criteriaList = new ArrayList<String>();
         
-        StringBuilder sb = new StringBuilder("select d.DOC_ID_C c0, d.DOC_TITLE_C c1, d.DOC_DESCRIPTION_C c2, d.DOC_CREATEDATE_D c3, d.DOC_LANGUAGE_C c4, s.SHA_ID_C is not null c5 ");
+        StringBuilder sb = new StringBuilder("select distinct d.DOC_ID_C c0, d.DOC_TITLE_C c1, d.DOC_DESCRIPTION_C c2, d.DOC_CREATEDATE_D c3, d.DOC_LANGUAGE_C c4, s.SHA_ID_C is not null c5 ");
         sb.append(" from T_DOCUMENT d ");
         sb.append(" left join T_SHARE s on s.SHA_IDDOCUMENT_C = d.DOC_ID_C and s.SHA_DELETEDATE_D is null ");
-        sb.append(" left join T_FILE f on f.FIL_IDDOC_C = d.DOC_ID_C and f.FIL_DELETEDATE_D is null ");
         
         // Adds search criteria
         if (criteria.getUserId() != null) {

docs-core/src/main/java/com/sismics/docs/core/dao/lucene/LuceneDao.java

@@ -23,6 +23,8 @@ import org.apache.lucene.search.IndexSearcher;
 import org.apache.lucene.search.ScoreDoc;
 import org.apache.lucene.search.TopDocs;
 import org.apache.lucene.util.Version;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.sismics.docs.core.model.context.AppContext;
 import com.sismics.docs.core.model.jpa.Document;
@@ -36,6 +38,10 @@ import com.sismics.docs.core.util.LuceneUtil.LuceneRunnable;
  * @author bgamard
  */
 public class LuceneDao {
+    /**
+     * Logger.
+     */
+    private static final Logger log = LoggerFactory.getLogger(LuceneDao.class);
 
     /**
      * Destroy and rebuild index.
@@ -172,13 +178,17 @@ public class LuceneDao {
         TermsFilter userFilter = new TermsFilter(terms);
         
         // Search
+        Set<String> documentIdList = new HashSet<String>();
+        if (!DirectoryReader.indexExists(AppContext.getInstance().getLuceneDirectory())) {
+            log.warn("Lucene directory not yet initialized");
+            return documentIdList;
+        }
         IndexReader reader = DirectoryReader.open(AppContext.getInstance().getLuceneDirectory());
         IndexSearcher searcher = new IndexSearcher(reader);
         TopDocs topDocs = searcher.search(query, userFilter, Integer.MAX_VALUE);
         ScoreDoc[] docs = topDocs.scoreDocs;
         
         // Extract document IDs
-        Set<String> documentIdList = new HashSet<String>();
         for (int i = 0; i < docs.length; i++) {
             org.apache.lucene.document.Document document = searcher.doc(docs[i].doc);
             String type = document.get("type");
@@ -205,8 +215,12 @@ public class LuceneDao {
         luceneDocument.add(new StringField("id", document.getId(), Field.Store.YES));
         luceneDocument.add(new StringField("user_id", document.getUserId(), Field.Store.YES));
         luceneDocument.add(new StringField("type", "document", Field.Store.YES));
-        luceneDocument.add(new TextField("title", document.getTitle(), Field.Store.NO));
+        if (document.getTitle() != null) {
-        luceneDocument.add(new TextField("description", document.getDescription(), Field.Store.NO));
+            luceneDocument.add(new TextField("title", document.getTitle(), Field.Store.NO));
+        }
+        if (document.getDescription() != null) {
+            luceneDocument.add(new TextField("description", document.getDescription(), Field.Store.NO));
+        }
         
         return luceneDocument;
     }
@@ -224,7 +238,9 @@ public class LuceneDao {
         luceneDocument.add(new StringField("user_id", document.getUserId(), Field.Store.YES));
         luceneDocument.add(new StringField("type", "file", Field.Store.YES));
         luceneDocument.add(new StringField("document_id", file.getDocumentId(), Field.Store.YES));
-        luceneDocument.add(new TextField("content", file.getContent(), Field.Store.NO));
+        if (file.getContent() != null) {
+            luceneDocument.add(new TextField("content", file.getContent(), Field.Store.NO));
+        }
         
         return luceneDocument;
     }

docs-core/src/main/java/com/sismics/docs/core/event/RebuildIndexAsyncListener.java

@@ -31,7 +31,7 @@ public class RebuildIndexAsyncListener {
      * @throws Exception
      */
     @Subscribe
-    public void onArticleCreated(final RebuildIndexAsyncEvent rebuildIndexAsyncEvent) throws Exception {
+    public void on(final RebuildIndexAsyncEvent rebuildIndexAsyncEvent) throws Exception {
         if (log.isInfoEnabled()) {
             log.info("Rebuild index event: " + rebuildIndexAsyncEvent.toString());
         }