fixed bug deletion on spatial index

pom.xml

@@ -97,7 +97,7 @@
         <surefire.version>2.17</surefire.version>
         <javac.src.version>1.6</javac.src.version>
         <javac.target.version>1.6</javac.target.version>
-        <orientdb.version>2.0-rc1</orientdb.version>
+        <orientdb.version>2.0-SNAPSHOT</orientdb.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 

src/main/java/com/orientechnologies/lucene/manager/OLuceneIndexManagerAbstract.java

@@ -104,6 +104,10 @@ public void addDocument(Document doc) {
   public void deleteDocument(Query query) {
     try {
       reopenToken = mgrWriter.deleteDocuments(query);
+      if (!mgrWriter.getIndexWriter().hasDeletions()) {
+        OLogManager.instance().error(this, "Error on deleting document by query '%s' to Lucene index",
+            new OIndexException("Error deleting document"), query);
+      }
     } catch (IOException e) {
       OLogManager.instance().error(this, "Error on deleting document by query '%s' to Lucene index", e, query);
     }
@@ -205,15 +209,29 @@ public void load(ORID indexRid, String indexName, OIndexDefinition indexDefiniti
   }
 
   public long size(ValuesTransformer<V> transformer) {
+
     IndexReader reader = null;
+    IndexSearcher searcher = null;
     try {
       reader = getSearcher().getIndexReader();
     } catch (IOException e) {
       OLogManager.instance().error(this, "Error on getting size of Lucene index", e);
+    } finally {
+      if (searcher != null) {
+        release(searcher);
+      }
     }
     return reader.numDocs();
   }
 
+  public void release(IndexSearcher searcher) {
+    try {
+      searcherManager.release(searcher);
+    } catch (IOException e) {
+      OLogManager.instance().error(this, "Error on releasing index searcher  of Lucene index", e);
+    }
+  }
+
   public void setManagedIndex(OIndex index) {
     this.managedIndex = index;
   }