--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/utilities/soql/MethodCallable.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2007 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package sun.jvm.hotspot.utilities.soql;
+
+import java.lang.reflect.Method;
+import javax.script.ScriptException;
+
+/**
+ * An implementation of Callable interface that
+ * invokes an instance or static Java method when
+ * called.
+ */
+public class MethodCallable implements Callable {
+  private Object target;
+  private Method method;
+  private boolean wrapArgs;
+
+  // "wrapArgs" tells whether the underlying java Method
+  // accepts one Object[] argument or it wants usual way of
+  // passing arguments. The former method is used when you
+  // want to implement a Callable that is variadic.
+  public MethodCallable(Object target, Method method, boolean wrapArgs) {
+    this.method = method;
+    this.target = target;
+    this.wrapArgs = wrapArgs;
+  }
+
+  public MethodCallable(Object target, Method method) {
+    this(target, method, true);
+  }
+
+  public Object call(Object[] args) throws ScriptException {
+    try {
+      if (wrapArgs) {
+        return method.invoke(target, new Object[] { args });
+      } else {
+        return method.invoke(target, args);
+      }
+    } catch (RuntimeException re) {
+      throw re;
+    } catch (Exception exp) {
+      throw new ScriptException(exp);
+    }
+  }
+}