summaryrefslogtreecommitdiff
path: root/connectivity/source/inc/java/LocalRef.hxx
diff options
context:
space:
mode:
Diffstat (limited to 'connectivity/source/inc/java/LocalRef.hxx')
-rw-r--r--connectivity/source/inc/java/LocalRef.hxx109
1 files changed, 109 insertions, 0 deletions
diff --git a/connectivity/source/inc/java/LocalRef.hxx b/connectivity/source/inc/java/LocalRef.hxx
new file mode 100644
index 000000000000..fb4cb6588635
--- /dev/null
+++ b/connectivity/source/inc/java/LocalRef.hxx
@@ -0,0 +1,109 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org 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 Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org. If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef CONNECTIVITY_LOCALREF_HXX
+#define CONNECTIVITY_LOCALREF_HXX
+
+/** === begin UNO includes === **/
+/** === end UNO includes === **/
+
+#include <jvmaccess/virtualmachine.hxx>
+
+//........................................................................
+namespace connectivity { namespace jdbc
+{
+//........................................................................
+
+ //====================================================================
+ //= LocalRef
+ //====================================================================
+ /** helper class to hold a local ref to a JNI object
+
+ Note that this class never actually calls NewLocalRef. It is assumed that all objects
+ passed are already acquired with a local ref (as it usually is the case if you obtain
+ the object from an JNI method).
+ */
+ template< typename T >
+ class LocalRef
+ {
+ public:
+ explicit LocalRef( JNIEnv& environment )
+ :m_environment( environment )
+ ,m_object( NULL )
+ {
+ }
+
+ LocalRef( JNIEnv& environment, T object )
+ :m_environment( environment )
+ ,m_object( object )
+ {
+ }
+
+ ~LocalRef()
+ {
+ reset();
+ }
+
+ T release()
+ {
+ T t = m_object;
+ m_object = NULL;
+ return t;
+ }
+
+ void set( T object ) { reset(); m_object = object; }
+
+ void reset()
+ {
+ if ( m_object != NULL )
+ {
+ m_environment.DeleteLocalRef( m_object );
+ m_object = NULL;
+ }
+ }
+
+ JNIEnv& env() const { return m_environment; }
+ T get() const { return m_object; }
+ bool is() const { return m_object != NULL; }
+
+ private:
+ LocalRef(LocalRef &); // not defined
+ void operator =(LocalRef &); // not defined
+
+ protected:
+ JNIEnv& m_environment;
+ T m_object;
+ };
+
+//........................................................................
+} } // namespace connectivity::jdbc
+//........................................................................
+
+#endif // CONNECTIVITY_LOCALREF_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */