Remove LOB writable 'close' event, since only readable Streams have this. Also fix uncaught LOB error.

Author: cjbj

lib/oracledb.js

@@ -1,4 +1,4 @@
-/* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. */
+/* Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved. */
 
 /******************************************************************************
  *
@@ -62,14 +62,19 @@ Lob.prototype._read = function()
     function(err, str)
     {
       if (err) {
-        self.close();
+        self.close(); // Ignore if any error occurs during close
         self.emit('error', err);
+        self.emit('close');
         return;
       }
       self.push(str);
       if (!str) {
         process.nextTick(function() {
-          self.close();
+          err = self.close();
+          if (err) {
+            self.emit('error', err);
+          }
+          self.emit('close');
         });
       }
     });
@@ -84,7 +89,7 @@ Lob.prototype._write = function(data, encoding, cb)
     function(err)
     {
       if (err) {
-        self.close();
+        self.close();   // Ignore if any error occurs during close
         return cb(err);
       }
       cb();
@@ -100,10 +105,14 @@ Lob.prototype.close = function(cb)
   }
 
   if (self.iLob != null) {
-    self.iLob.release();
+    try {
+      self.iLob.release();
+    } catch(err) {
+        self.iLob = null;
+        return err;
+    }
     self.iLob = null;
   }
-  self.emit('close');
 }
 
 oracledb.Oracledb.prototype.newLob = function(iLob)