Source Code Cross Referenced for Callback.java in  » Workflow-Engines » pegasus-2.1.0 » org » griphyn » cPlanner » parser » dax » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Workflow Engines » pegasus 2.1.0 » org.griphyn.cPlanner.parser.dax 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


01:        /*
02:         * This file or a portion of this file is licensed under the terms of
03:         * the Globus Toolkit Public License, found in file GTPL, or at
04:         * http://www.globus.org/toolkit/download/license.html. This notice must
05:         * appear in redistributions of this file, with or without modification.
06:         *
07:         * Redistributions of this Software, with or without modification, must
08:         * reproduce the GTPL in: (1) the Software, or (2) the Documentation or
09:         * some other similar material which is provided with the Software (if
10:         * any).
11:         *
12:         * Copyright 1999-2004 University of Chicago and The University of
13:         * Southern California. All rights reserved.
14:         */
15:        package org.griphyn.cPlanner.parser.dax;
16:
17:        import org.griphyn.cPlanner.classes.SubInfo;
18:
19:        /**
20:         * This interfaces defines the callback calls from DAX parsing. A slim
21:         * and memory-efficient parser of DAX is expected to implement these
22:         * callbacks, and generate its own information on the fly.
23:         *
24:         * @author Karan Vahi
25:         * @author Jens-S. Vöckler
26:         * @version $Revision: 50 $
27:         */
28:        public interface Callback {
29:
30:            /**
31:             * Return a object that is constructed during the parsing of the object.
32:             * The type of the object that is constructed is determined by the
33:             * implementing callback handler. For example, it could be an Adag object
34:             * used by Pegasus or a map containing the graph structure of the dax.
35:             * The implementing classes should keep a boolean flag that signifies whether
36:             * the corresponding object has been created by the implementing class or
37:             * not. The variable should be set when the implementing callback handler
38:             * deems that it has enough data to construct that object.
39:             */
40:            public Object getConstructedObject();
41:
42:            /**
43:             * Callback when the opening tag was parsed. This contains all
44:             * attributes and their raw values within a map. This callback can
45:             * also be used to initialize callback-specific resources.
46:             *
47:             * @param attributes is a map of attribute key to attribute value
48:             */
49:            public void cbDocument(java.util.Map attributes);
50:
51:            /**
52:             * Callback for the job from section 2 jobs. These jobs are completely
53:             * assembled, but each is passed separately.
54:             *
55:             * @param job is the DAX-style job.
56:             */
57:            public void cbJob(SubInfo job);
58:
59:            /**
60:             * Callback for child and parent relationships from section 3.
61:             *
62:             * @param child is the IDREF of the child element.
63:             * @param parents is a list of IDREFs of the included parents.
64:             */
65:            public void cbParents(String child, java.util.List parents);
66:
67:            /**
68:             * Callback when the parsing of the document is done. While this state
69:             * could also be determined from the return of the invocation of the
70:             * parser, that return may be hidden in another place of the code.
71:             * This callback can be used to free callback-specific resources.
72:             */
73:            public void cbDone();
74:
75:        }
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