Add entrypoint to org.h2.tools.Shell so it can be called from inside an application.

patch by Thomas Gillet.

h2/src/docsrc/html/changelog.html

@@ -38,6 +38,8 @@ Change Log
 </li><li>Lucene 2 is no longer supported.
 </li><li>Fix bug in calculating default MIN and MAX values for SEQUENCE.
 </li><li>Fix bug in performing IN queries with multiple values when IGNORECASE=TRUE
+</li><li>Add entrypoint to org.h2.tools.Shell so it can be called from inside an application.
+    patch by Thomas Gillet.
 </li></ul>
 
 <h2>Version 1.3.175 (2014-01-18)</h2>

h2/src/main/org/h2/tools/Shell.java

@@ -164,6 +164,23 @@ public class Shell extends Tool implements Runnable {
         }
     }
     
+    /**
+     * Run the shell tool with the given connection and command line settings.<br>
+     * The connection will be closed when the shell exits.
+     * This is primary used to integrate the Shell into another application.
+     * <p>
+     * <i>Note:</i> using the "-url" option in {@code args} doesn't make much sense
+     * since it will override the {@code conn} parameter.
+     *
+     * @param conn the connection
+     * @param args the command line settings
+     */
+    public void runTool(Connection conn, String... args) throws SQLException {
+    	this.conn = conn;
+    	this.stat = conn.createStatement();
+    	runTool(args);
+    }
+
     private void showHelp() {
         println("Commands are case insensitive; SQL statements end with ';'");
         println("help or ?      Display this help");