--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/sun/management/StackTraceElementCompositeData.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,123 @@
+/*
+ * Copyright 2005 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.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * 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.management;
+
+import javax.management.openmbean.CompositeType;
+import javax.management.openmbean.CompositeData;
+import javax.management.openmbean.CompositeDataSupport;
+import javax.management.openmbean.OpenDataException;
+
+/**
+ * A CompositeData for StackTraceElement for the local management support.
+ * This class avoids the performance penalty paid to the
+ * construction of a CompositeData use in the local case.
+ */
+public class StackTraceElementCompositeData extends LazyCompositeData {
+    private final StackTraceElement ste;
+
+    private StackTraceElementCompositeData(StackTraceElement ste) {
+        this.ste = ste;
+    }
+
+    public StackTraceElement getStackTraceElement() {
+        return ste;
+    }
+
+    public static StackTraceElement from(CompositeData cd) {
+        validateCompositeData(cd);
+
+        return new StackTraceElement(getString(cd, CLASS_NAME),
+                                     getString(cd, METHOD_NAME),
+                                     getString(cd, FILE_NAME),
+                                     getInt(cd, LINE_NUMBER));
+    }
+
+    public static CompositeData toCompositeData(StackTraceElement ste) {
+        StackTraceElementCompositeData cd = new StackTraceElementCompositeData(ste);
+        return cd.getCompositeData();
+    }
+
+    protected CompositeData getCompositeData() {
+        // CONTENTS OF THIS ARRAY MUST BE SYNCHRONIZED WITH
+        // stackTraceElementItemNames!
+        final Object[] stackTraceElementItemValues = {
+            ste.getClassName(),
+            ste.getMethodName(),
+            ste.getFileName(),
+            new Integer(ste.getLineNumber()),
+            new Boolean(ste.isNativeMethod()),
+        };
+        try {
+            return new CompositeDataSupport(stackTraceElementCompositeType,
+                                            stackTraceElementItemNames,
+                                            stackTraceElementItemValues);
+        } catch (OpenDataException e) {
+            // Should never reach here
+            throw Util.newInternalError(e);
+        }
+    }
+
+    private static final CompositeType stackTraceElementCompositeType;
+    static {
+        try {
+            stackTraceElementCompositeType = (CompositeType)
+                MappedMXBeanType.toOpenType(StackTraceElement.class);
+        } catch (OpenDataException e) {
+            // Should never reach here
+            throw Util.newInternalError(e);
+        }
+    }
+
+    // Attribute names
+    private static final String CLASS_NAME      = "className";
+    private static final String METHOD_NAME     = "methodName";
+    private static final String FILE_NAME       = "fileName";
+    private static final String LINE_NUMBER     = "lineNumber";
+    private static final String NATIVE_METHOD   = "nativeMethod";
+
+    private static final String[] stackTraceElementItemNames = {
+        CLASS_NAME,
+        METHOD_NAME,
+        FILE_NAME,
+        LINE_NUMBER,
+        NATIVE_METHOD,
+    };
+
+    /** Validate if the input CompositeData has the expected
+     * CompositeType (i.e. contain all attributes with expected
+     * names and types).
+     */
+    public static void validateCompositeData(CompositeData cd) {
+        if (cd == null) {
+            throw new NullPointerException("Null CompositeData");
+        }
+
+        if (!isTypeMatched(stackTraceElementCompositeType, cd.getCompositeType())) {
+            throw new IllegalArgumentException(
+                "Unexpected composite type for StackTraceElement");
+        }
+    }
+}