From ab4b19dbab4a5cae0655e2372658f16b4dfcbb87 Mon Sep 17 00:00:00 2001
From: Jeremy Long <jeremy.long@gmail.com>
Date: Tue, 25 Nov 2014 05:55:01 -0500
Subject: [PATCH] added a database check to ensure data exists - this replaces
 an older method and reduces startup time to help resolve issue #168

Former-commit-id: 4a8b2db9adf91cef2d89148f0c9b9c2327240221
---
 .../dependencycheck/data/nvdcve/CveDB.java    | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/dependency-check-core/src/main/java/org/owasp/dependencycheck/data/nvdcve/CveDB.java b/dependency-check-core/src/main/java/org/owasp/dependencycheck/data/nvdcve/CveDB.java
index 461f1a030..f629aa879 100644
--- a/dependency-check-core/src/main/java/org/owasp/dependencycheck/data/nvdcve/CveDB.java
+++ b/dependency-check-core/src/main/java/org/owasp/dependencycheck/data/nvdcve/CveDB.java
@@ -700,6 +700,31 @@ public class CveDB {
         }
     }
 
+    /**
+     * Checks to see if data exists so that analysis can be performed.
+     *
+     * @return <code>true</code if data exists; otherwise <code>false</code>
+     */
+    public boolean dataExists() {
+        Statement cs = null;
+        ResultSet rs = null;
+        try {
+            cs = conn.createStatement();
+            rs = cs.executeQuery("SELECT COUNT(*) records FROM cpeEntry");
+            if (rs.next()) {
+                if (rs.getInt(1) > 0) {
+                    return true;
+                }
+            }
+        } catch (SQLException ex) {
+            Logger.getLogger(CveDB.class.getName()).log(Level.SEVERE, null, ex);
+        } finally {
+            DBUtils.closeResultSet(rs);
+            DBUtils.closeStatement(cs);
+        }
+        return false;
+    }
+
     /**
      * It is possible that orphaned rows may be generated during database updates. This should be called after all
      * updates have been completed to ensure orphan entries are removed.