Source Code Cross Referenced for AddMapAction.java in  » Scripting » Pnuts » pnuts » xml » action » Java Source Code / Java DocumentationJava Source Code and Java Documentation

01:        /*
02:         * @(#)AddMapAction.java 1.2 04/12/06
03:         *
04:         * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
05:         *
06:         * See the file "LICENSE.txt" for information on usage and redistribution
07:         * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
08:         */
09:        package pnuts.xml.action;
10:
11:        import pnuts.beans.BeanUtil;
12:        import java.util.Map;
13:        import java.util.HashMap;
14:        import java.util.List;
15:
16:        /**
17:         * This action constructs a Map object from values that two child-elements
18:         * produce.  This action is created with a <em>keyword</em> and the <em>value</em>.
19:         *
20:         * e.g.
21:         * <pre>
22:         * &lt;map&gt;
23:         *   &lt;key&gt;<em>age</em>&lt;/key&gt;
24:         *   &lt;value&gt;<em>0</em>&lt;/value&gt;
25:         * &lt;/map&gt;
26:         * </pre>
27:         * <pre>
28:         * new AddMapAction("key", "value");
29:         * </pre>
30:         */
31:        public class AddMapAction extends CallAction {
32:
33:            private String keyName;
34:            private String valueName;
35:
36:            /**
37:             * Constructor
38:             *
39:             * @param keyName a <em>Keyword</em> name in the rule that specifies which element is a key-part of the resulting Map entries.
40:             * @param valueName a <em>Keyword</em> anem in the rule that specifies which element is a value-part of the resulting Map entries.
41:             */
42:            public AddMapAction(String keyName, String valueName) {
43:                super (new String[] { keyName, valueName });
44:            }
45:
46:            public void start(String path, String key, Map attributeMap,
47:                    Object top) throws Exception {
48:                if (!path.equals(getStackTopPath())) {
49:                    Map map = new HashMap();
50:                    if (top instanceof  Map) {
51:                        ((Map) top).put(key, map);
52:                    } else if (top instanceof  List) {
53:                        ((List) top).add(map);
54:                    } else {
55:                        BeanUtil.setProperty(top, key, map);
56:                    }
57:                    push(path, map);
58:                }
59:            }
60:
61:            protected void call(Object[] args) {
62:                if (args.length != 2) {
63:                    throw new IllegalArgumentException();
64:                }
65:                Object top = getStackTopValue();
66:                if (top instanceof  Map) {
67:                    Map map = (Map) top;
68:                    map.put(args[0], args[1]);
69:                    push(getStackTopPath(), map);
70:                } else {
71:                    throw new IllegalArgumentException(String.valueOf(top));
72:                }
73:            }
74:        }