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1
4 package org.ofbiz.minerva.pool.xml;
5
6 import java.lang.reflect.*;
7 import java.util.*;
8
9 import org.w3c.dom.*;
10
11
16 public abstract class XMLUtils {
17
18 public static String  getChildText(Element parent, String name) {
19 Element e = getChildByName(parent, name);
20 if (e == null)
21 return "";
22 return getText(e);
23 }
24
25 public static String getText(Element e) {
26 NodeList nl = e.getChildNodes();
27 int max = nl.getLength();
28 for (int i = 0; i < max; i++) {
29 Node n = nl.item(i);
30 if (n.getNodeType() == Node.TEXT_NODE) {
31 return n.getNodeValue();
32 }
33 }
34 return "";
35 }
36
37 public static Element getChildByName(Element e, String name) {
38 Element[] list = getChildrenByName(e, name);
39 if (list.length == 0)
40 return null;
41 if (list.length > 1)
42 throw new IllegalStateException ("Too many (" + list.length + ") '" + name + "' elements found!");
43 return list[0];
44 }
45
46 public static Element[] getChildrenByName(Element e, String name) {
47 NodeList nl = e.getChildNodes();
48 int max = nl.getLength();
49 LinkedList list = new LinkedList();
50 for (int i = 0; i < max; i++) {
51 Node n = nl.item(i);
52 if (n.getNodeType() == Node.ELEMENT_NODE && n.getNodeName().equals(name)) {
53 list.add(n);
54 }
55 }
56 return (Element[]) list.toArray(new Element[list.size()]);
57 }
58
59 public static String [] splitOnWhitespace(String source) {
60 int pos = -1;
61 LinkedList list = new LinkedList();
62 int max = source.length();
63 for (int i = 0; i < max; i++) {
64 char c = source.charAt(i);
65 if (Character.isWhitespace(c)) {
66 if (i - pos > 1)
67 list.add(source.substring(pos + 1, i));
68 pos = i;
69 }
70 }
71 return (String []) list.toArray(new String [list.size()]);
72 }
73
74 public static Element createChild(Document doc, Element root, String name) {
75 Element elem = doc.createElement(name);
76 root.appendChild(elem);
77 return elem;
78 }
79
80 public static void createChildText(Document doc, Element elem, String name, String value) {
81 Element child = doc.createElement(name);
82 child.appendChild(doc.createTextNode(value == null ? "" : value));
83 elem.appendChild(child);
84 }
85
86 public static void createOptionalChildText(Document doc, Element elem, String name, String value) {
87 if (value == null || value.length() == 0)
88 return;
89 Element child = doc.createElement(name);
90 child.appendChild(doc.createTextNode(value));
91 elem.appendChild(child);
92 }
93
94 public static Map getProperties(Element root) {
95 Map map = new HashMap();
96 Element[] list = getChildrenByName(root, "property");
97 for (int i = 0; i < list.length; i++) {
98 String name = list[i].getAttribute("name");
99 String type = list[i].getAttribute("type");
100 String valueString = getText(list[i]);
101 try {
102 Class cls = Class.forName(type);
103 Constructor con = cls.getConstructor(new Class []{String .class});
104 Object value = con.newInstance(new Object []{valueString});
105 map.put(name, value);
106 } catch (Exception e) {
107 System.out.println("Unable to parse property '" + name + "'='" + valueString + "': " + e);
108 }
109 }
110 return map;
111 }
112
113 public static void applyProperties(Object o, Element root) {
114 Map map = getProperties(root);
115 Iterator it = map.keySet().iterator();
116 Field[] fields = o.getClass().getFields();
117 Method[] methods = o.getClass().getMethods();
118 while (it.hasNext()) {
119 String name = (String ) it.next();
120 Object value = map.get(name);
121 try {
122 for (int i = 0; i < fields.length; i++) {
123 if (fields[i].getName().equalsIgnoreCase(name) && isTypeMatch(fields[i].getType(), value.getClass())) {
124 fields[i].set(o, value);
125 System.out.println("Set field " + fields[i].getName() + "=" + value);
126 break;
127 }
128 }
129 for (int i = 0; i < methods.length; i++) {
130 if (methods[i].getName().equalsIgnoreCase("set" + name) && methods[i].getParameterTypes().length == 1 && isTypeMatch(methods[i].getParameterTypes()[0], value.getClass())) {
131 methods[i].invoke(o, new Object []{value});
132 System.out.println("Set method " + methods[i].getName() + "=" + value);
133 break;
134 }
135 }
136 } catch (Exception e) {
137 System.out.println("Unable to apply property '" + name + "': " + e);
138 }
139 }
140 }
141
142 private static boolean isTypeMatch(Class one, Class two) {
143 if (one.equals(two))
144 return true;
145 if (one.isPrimitive()) {
146 if (one.getName().equals("int") && two.getName().equals("java.lang.Integer"))
147 return true;
148 if (one.getName().equals("long") && two.getName().equals("java.lang.Long"))
149 return true;
150 if (one.getName().equals("float") && two.getName().equals("java.lang.Float"))
151 return true;
152 if (one.getName().equals("double") && two.getName().equals("java.lang.Double"))
153 return true;
154 if (one.getName().equals("char") && two.getName().equals("java.lang.Character"))
155 return true;
156 if (one.getName().equals("byte") && two.getName().equals("java.lang.Byte"))
157 return true;
158 if (one.getName().equals("short") && two.getName().equals("java.lang.Short"))
159 return true;
160 if (one.getName().equals("boolean") && two.getName().equals("java.lang.Boolean"))
161 return true;
162 }
163 return false;
164 }
165 }
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