re-wrote the retrieval of the vendor product list to use a generic pair and completely encapsulate all sql objects in CveDB

Former-commit-id: f801fa86d08c5ba7c20d4c7067d4761d254006c9

dependency-check-core/src/main/java/org/owasp/dependencycheck/data/cpe/CpeMemoryIndex.java

@@ -18,10 +18,9 @@
 package org.owasp.dependencycheck.data.cpe;
 
 import java.io.IOException;
-import java.sql.ResultSet;
-import java.sql.SQLException;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Set;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 import org.apache.lucene.analysis.Analyzer;
@@ -45,6 +44,8 @@ import org.owasp.dependencycheck.data.lucene.FieldAnalyzer;
 import org.owasp.dependencycheck.data.lucene.LuceneUtils;
 import org.owasp.dependencycheck.data.lucene.SearchFieldAnalyzer;
 import org.owasp.dependencycheck.data.nvdcve.CveDB;
+import org.owasp.dependencycheck.data.nvdcve.DatabaseException;
+import org.owasp.dependencycheck.utils.Pair;
 
 /**
  * An in memory lucene index that contains the vendor/product combinations from the CPE (application) identifiers within
@@ -210,7 +211,7 @@ public final class CpeMemoryIndex {
     }
 
     /**
-     * Builds the lucene index based off of the data within the CveDB.
+     * Builds the CPE Lucene Index based off of the data within the CveDB.
      *
      * @param cve the data base containing the CPE data
      * @throws IndexException thrown if there is an issue creating the index
@@ -222,15 +223,12 @@ public final class CpeMemoryIndex {
             analyzer = createIndexingAnalyzer();
             final IndexWriterConfig conf = new IndexWriterConfig(LuceneUtils.CURRENT_VERSION, analyzer);
             indexWriter = new IndexWriter(index, conf);
-            final ResultSet rs = cve.getVendorProductList();
-            if (rs == null) {
-                throw new IndexException("No data exists");
-            }
             try {
-                while (rs.next()) {
-                    saveEntry(rs.getString(1), rs.getString(2), indexWriter);
+                final Set<Pair<String, String>> data = cve.getVendorProductList();
+                for (Pair<String, String> pair : data) {
+                    saveEntry(pair.getLeft(), pair.getRight(), indexWriter);
                 }
-            } catch (SQLException ex) {
+            } catch (DatabaseException ex) {
                 Logger.getLogger(CpeMemoryIndex.class.getName()).log(Level.FINE, null, ex);
                 throw new IndexException("Error reading CPE data", ex);
             }

dependency-check-core/src/main/java/org/owasp/dependencycheck/data/nvdcve/CveDB.java

@@ -38,6 +38,7 @@ import org.owasp.dependencycheck.dependency.VulnerableSoftware;
 import org.owasp.dependencycheck.utils.DBUtils;
 import org.owasp.dependencycheck.utils.DependencyVersion;
 import org.owasp.dependencycheck.utils.DependencyVersionUtil;
+import org.owasp.dependencycheck.utils.Pair;
 
 /**
  * The database holding information about the NVD CVE data.
@@ -295,19 +296,27 @@ public class CveDB {
     /**
      * Returns the entire list of vendor/product combinations.
      *
-     * @return the entire list of vendor/product combinations.
+     * @return the entire list of vendor/product combinations
+     * @throws DatabaseException thrown when there is an error retrieving the data from the DB
      */
-    public ResultSet getVendorProductList() {
+    public Set<Pair<String, String>> getVendorProductList() throws DatabaseException {
+        HashSet data = new HashSet<Pair<String, String>>();
         ResultSet rs = null;
+        PreparedStatement ps = null;
         try {
-            final PreparedStatement ps = getConnection().prepareStatement(SELECT_VENDOR_PRODUCT_LIST);
+            ps = getConnection().prepareStatement(SELECT_VENDOR_PRODUCT_LIST);
             rs = ps.executeQuery();
+            while (rs.next()) {
+                data.add(new Pair(rs.getString(1), rs.getString(2)));
+            }
         } catch (SQLException ex) {
             final String msg = "An unexpected SQL Exception occurred; please see the verbose log for more details.";
-            Logger.getLogger(CveDB.class.getName()).log(Level.SEVERE, msg);
-            Logger.getLogger(CveDB.class.getName()).log(Level.FINE, null, ex);
-        } // can't close the statement in the PS as the resultset is returned, closing PS would close the resultset
-        return rs;
+            throw new DatabaseException(msg, ex);
+        } finally {
+            DBUtils.closeResultSet(rs);
+            DBUtils.closeStatement(ps);
+        }
+        return data;
     }
 
     /**

dependency-check-core/src/main/java/org/owasp/dependencycheck/utils/Pair.java

@@ -0,0 +1,124 @@
+/*
+ * This file is part of dependency-check-core.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * Copyright (c) 2014 Jeremy Long. All Rights Reserved.
+ */
+package org.owasp.dependencycheck.utils;
+
+/**
+ * A generic pair of elements.
+ *
+ * @author Jeremy Long <jeremy.long@owasp.org>
+ */
+public class Pair<K, V> {
+
+    /**
+     * Constructs a new empty pair.
+     */
+    public Pair() {
+    }
+
+    /**
+     * Constructs a new Pair with the given left and right values.
+     *
+     * @param left the value for the left pair
+     * @param right the value for the right pair
+     */
+    public Pair(K left, V right) {
+        this.left = left;
+        this.right = right;
+    }
+    /**
+     * The left element of the pair.
+     */
+    private K left = null;
+
+    /**
+     * Get the value of left
+     *
+     * @return the value of left
+     */
+    public K getLeft() {
+        return left;
+    }
+
+    /**
+     * Set the value of left
+     *
+     * @param left new value of left
+     */
+    public void setLeft(K left) {
+        this.left = left;
+    }
+    /**
+     * The right element of the pair.
+     */
+    private V right = null;
+
+    /**
+     * Get the value of right
+     *
+     * @return the value of right
+     */
+    public V getRight() {
+        return right;
+    }
+
+    /**
+     * Set the value of right
+     *
+     * @param right new value of right
+     */
+    public void setRight(V right) {
+        this.right = right;
+    }
+
+    /**
+     * Generates the hash code using the hash codes from the contained objects.
+     *
+     * @return the hash code of the Pair
+     */
+    @Override
+    public int hashCode() {
+        int hash = 3;
+        hash = 53 * hash + (this.left != null ? this.left.hashCode() : 0);
+        hash = 53 * hash + (this.right != null ? this.right.hashCode() : 0);
+        return hash;
+    }
+
+    /**
+     * Determines the equality of this and the provided object.
+     *
+     * @param obj the {@link Object} to check for equality to this
+     * @return true if this and the provided {@link Object} are equal; otherwise false
+     */
+    @Override
+    public boolean equals(Object obj) {
+        if (obj == null) {
+            return false;
+        }
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+        final Pair<?, ?> other = (Pair<?, ?>) obj;
+        if (this.left != other.left && (this.left == null || !this.left.equals(other.left))) {
+            return false;
+        }
+        if (this.right != other.right && (this.right == null || !this.right.equals(other.right))) {
+            return false;
+        }
+        return true;
+    }
+}