added DriverShim to resolve class loader issues with the DriverManager

Former-commit-id: 88fe523018dc9c6d7df7f39ed1e21e8803d3fb06

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

@@ -0,0 +1,180 @@
+/*
+ * This file is part of dependency-check-core.
+ *
+ * Dependency-check-core is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option) any
+ * later version.
+ *
+ * Dependency-check-core is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * dependency-check-core. If not, see http://www.gnu.org/licenses/.
+ *
+ * Copyright (c) 2014 Jeremy Long. All Rights Reserved.
+ */
+package org.owasp.dependencycheck.data.nvdcve;
+
+import java.sql.Connection;
+import java.sql.Driver;
+import java.sql.DriverPropertyInfo;
+import java.sql.SQLException;
+import java.sql.SQLFeatureNotSupportedException;
+import java.util.Properties;
+import java.util.logging.Logger;
+
+/**
+ * <p>
+ * Driver shim to get around the class loader issue with the DriverManager. The following code is a nearly identical
+ * copy (with more comments and a few more methods implemented) of the DriverShim from:</p>
+ * <blockquote>http://www.kfu.com/~nsayer/Java/dyn-jdbc.html</blockquote>
+ *
+ * @author Jeremy Long <jeremy.long@owasp.org>
+ * @see java.sql.Driver
+ */
+class DriverShim implements Driver {
+
+    /**
+     * The database driver being wrapped.
+     */
+    private final Driver driver;
+
+    /**
+     * Constructs a new wrapper around a Driver.
+     *
+     * @param driver the database driver to wrap
+     */
+    DriverShim(Driver driver) {
+        this.driver = driver;
+    }
+
+    /**
+     * Wraps the underlying driver's call to acceptsURL. Returns whether or not the driver can open a connection to the
+     * given URL.
+     *
+     * @param url the URL of the database
+     * @return true if the wrapped driver can connect to the specified URL
+     * @throws SQLException thrown if there is an error connecting to the database
+     * @see java.sql.Driver#acceptsURL(java.lang.String)
+     */
+    @Override
+    public boolean acceptsURL(String url) throws SQLException {
+        return this.driver.acceptsURL(url);
+    }
+
+    /**
+     * Returns the wrapped driver's major version number.
+     *
+     * @return the wrapped driver's major version number
+     * @see java.sql.Driver#getMajorVersion()
+     */
+    @Override
+    public int getMajorVersion() {
+        return this.driver.getMajorVersion();
+    }
+
+    /**
+     * Returns the wrapped driver's minor version number.
+     *
+     * @return the wrapped driver's minor version number
+     * @see java.sql.Driver#getMinorVersion()
+     */
+    @Override
+    public int getMinorVersion() {
+        return this.driver.getMinorVersion();
+    }
+
+    /**
+     * Returns whether or not the wrapped driver is jdbcCompliant.
+     *
+     * @return true if the wrapped driver is JDBC compliant; otherwise false
+     * @see java.sql.Driver#jdbcCompliant()
+     */
+    @Override
+    public boolean jdbcCompliant() {
+        return this.driver.jdbcCompliant();
+    }
+
+    /**
+     * Wraps the call to the underlying driver's connect method.
+     *
+     * @param url the URL of the database
+     * @param info a collection of string/value pairs
+     * @return a Connection object
+     * @throws SQLException thrown if there is an error connecting to the database
+     * @see java.sql.Driver#connect(java.lang.String, java.util.Properties)
+     */
+    @Override
+    public Connection connect(String url, Properties info) throws SQLException {
+        return this.driver.connect(url, info);
+    }
+
+    /**
+     * Wraps the call to the underlying driver's getPropertyInfo method.
+     *
+     * @param url the URL of the database
+     * @param info a collection of string/value pairs
+     * @return an array of DriverPropertyInfo objects
+     * @throws SQLException thrown if there is an error accessing the database
+     * @see java.sql.Driver#getPropertyInfo(java.lang.String, java.util.Properties)
+     */
+    @Override
+    public DriverPropertyInfo[] getPropertyInfo(String url, Properties info) throws SQLException {
+        return this.driver.getPropertyInfo(url, info);
+    }
+
+    /**
+     * Wraps the call to the underlying driver's getParentLogger method.
+     *
+     * @return the parent's Logger
+     * @throws SQLException thrown if there is an error accessing the database
+     * @see java.sql.Driver#getParentLogger()
+     */
+    @Override
+    public Logger getParentLogger() throws SQLFeatureNotSupportedException {
+        return this.driver.getParentLogger();
+    }
+
+    /**
+     * Standard implementation of hashCode.
+     *
+     * @return the hashCode of the object
+     */
+    @Override
+    public int hashCode() {
+        int hash = 7;
+        hash = 97 * hash + (this.driver != null ? this.driver.hashCode() : 0);
+        return hash;
+    }
+
+    /**
+     * Standard implementation of equals.
+     *
+     * @param obj the object to compare
+     * @return returns true if the objects are equal; otherwise false
+     */
+    @Override
+    public boolean equals(Object obj) {
+        if (obj == null) {
+            return false;
+        }
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+        final DriverShim other = (DriverShim) obj;
+        return this.driver == other.driver || (this.driver != null && this.driver.equals(other.driver));
+    }
+
+    /**
+     * Standard implementation of toString().
+     *
+     * @return the String representation of the object
+     */
+    @Override
+    public String toString() {
+        return "DriverShim{" + "driver=" + driver + '}';
+    }
+}