Source Code Cross Referenced for Upgrade.java in  » ESB » open-esb » com » sun » jbi » component » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » ESB » open esb » com.sun.jbi.component 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


01:        /*
02:         * BEGIN_HEADER - DO NOT EDIT
03:         *
04:         * The contents of this file are subject to the terms
05:         * of the Common Development and Distribution License
06:         * (the "License").  You may not use this file except
07:         * in compliance with the License.
08:         *
09:         * You can obtain a copy of the license at
10:         * https://open-esb.dev.java.net/public/CDDLv1.0.html.
11:         * See the License for the specific language governing
12:         * permissions and limitations under the License.
13:         *
14:         * When distributing Covered Code, include this CDDL
15:         * HEADER in each file and include the License file at
16:         * https://open-esb.dev.java.net/public/CDDLv1.0.html.
17:         * If applicable add the following below this CDDL HEADER,
18:         * with the fields enclosed by brackets "[]" replaced with
19:         * your own identifying information: Portions Copyright
20:         * [year] [name of copyright owner]
21:         */
22:
23:        /*
24:         * @(#)Upgrade.java
25:         * Copyright 2004-2007 Sun Microsystems, Inc. All Rights Reserved.
26:         *
27:         * END_HEADER - DO NOT EDIT
28:         */
29:        package com.sun.jbi.component;
30:
31:        import java.util.List;
32:        import javax.jbi.JBIException;
33:
34:        /**
35:         * This is an optional interface that can be implemented by a JBI component to
36:         * provide a way to upgrade to a new version of the component. It is called by
37:         * the JBI runtime during the upgrade processing initiated by a client, which
38:         * can be either an ant task, an asadmin command, or an action in the admin
39:         * console.
40:         *
41:         * @author Mark S White
42:         */
43:        public interface Upgrade {
44:            /**
45:             * This method is called by the JBI runtime to allow a component to upgrade
46:             * its workspace and any existing Service Units to match the new version of
47:             * the component. The JBI runtime copies the existing workspace root to the
48:             * new workspace root prior to calling this method, so that the component
49:             * can examine the contents of the workspace root to determine the version
50:             * of the component from which the upgrade is being made. All updates to the
51:             * workspace root and Service Unit roots are done in-place; in the event of
52:             * a failure, the JBI runtime reverts back to the original workspace root
53:             * and the Service Unit roots.
54:             * <p>
55:             * Note that the component must ensure that it never holds open references
56:             * to any files in the workspace root or any of the Service Unit roots upon
57:             * returning from this method. Failure to do so will cause problems when
58:             * the runtime attempts to complete the upgrade processing.
59:             * 
60:             * @param workspaceRoot the workspace root for the new version of the
61:             * component that will replace the currently installed version. This is
62:             * populated with the contents of the original workspace root and the
63:             * component must update it to match the new version of the component.
64:             * @param serviceUnitRoots a list of directory paths to all of the Service
65:             * Units currently deployed to the component. The component must update all
66:             * of these to match the new version of the component.
67:             * @exception JBIException when there is an error requiring that the upgrade
68:             * be terminated.
69:             */
70:            void upgrade(String workspaceRoot, List<String> serviceUnitRoots)
71:                    throws JBIException;
72:        }
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