From ba983fb596e079e6bb008bb994e4ad2afa27ff2c Mon Sep 17 00:00:00 2001
From: Dario Sassi <dario.s@egaltech.com>
Date: Thu, 17 Dec 2015 10:43:05 +0000
Subject: [PATCH] EgtGeomKernel : - piccola correzione.

---
 GeomDB.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/GeomDB.cpp b/GeomDB.cpp
index be02812..9a672d1 100644
--- a/GeomDB.cpp
+++ b/GeomDB.cpp
@@ -662,6 +662,9 @@ GeomDB::GetPrev( int nId) const
 int
 GeomDB::GetFirstNameInGroup( int nGroupId, const string& sName) const
 {
+  // verifico validità minima di stringa con nome
+   if ( IsEmptyOrSpaces( sName))
+      return GDB_ID_NULL ;
   // recupero il gruppo
    const GdbGroup* pGdbGroup = GetGdbGroup( nGroupId) ;
    if ( pGdbGroup == nullptr)
@@ -683,6 +686,9 @@ GeomDB::GetFirstNameInGroup( int nGroupId, const string& sName) const
 int
 GeomDB::GetNextName( int nId, const string& sName) const
 {
+  // verifico validità minima di stringa con nome
+   if ( IsEmptyOrSpaces( sName))
+      return GDB_ID_NULL ;
   // recupero l'oggetto
    const GdbObj* pGdbObj = GetGdbObj( nId) ;
    if ( pGdbObj == nullptr)
@@ -704,6 +710,9 @@ GeomDB::GetNextName( int nId, const string& sName) const
 int
 GeomDB::GetLastNameInGroup( int nGroupId, const string& sName) const
 {
+  // verifico validità minima di stringa con nome
+   if ( IsEmptyOrSpaces( sName))
+      return GDB_ID_NULL ;
   // recupero il gruppo
    const GdbGroup* pGdbGroup = GetGdbGroup( nGroupId) ;
    if ( pGdbGroup == nullptr)
@@ -725,6 +734,9 @@ GeomDB::GetLastNameInGroup( int nGroupId, const string& sName) const
 int
 GeomDB::GetPrevName( int nId, const string& sName) const
 {
+  // verifico validità minima di stringa con nome
+   if ( IsEmptyOrSpaces( sName))
+      return GDB_ID_NULL ;
   // recupero l'oggetto
    const GdbObj* pGdbObj = GetGdbObj( nId) ;
    if ( pGdbObj == nullptr)