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1 package org.oddjob.designer.arooa;
2
3 import java.util.Stack  ;
4
5 import org.apache.log4j.Logger;
6 import org.oddjob.arooa.ArooaHandler;
7 import org.oddjob.arooa.ArooaContext;
8 import org.xml.sax.Attributes ;
9 import org.xml.sax.SAXParseException ;
10
11
14 public class DualHandler extends ArooaHandler {
15 private static final Logger logger = Logger.getLogger(DualHandler.class);
16
17 private final Stack handlers1 = new Stack ();
18 private final Stack handlers2 = new Stack ();
19
20 private boolean handler1OK = true;
21 private boolean handler2OK = true;
22
23 public DualHandler(ArooaHandler handler1, ArooaHandler handler2) {
24 this.handlers1.push(handler1);
25 this.handlers2.push(handler2);
26 }
27
28 public boolean isHandler1OK() {
29 return handler1OK;
30 }
31
32 public boolean isHandler2OK() {
33 return handler2OK;
34 }
35
36 public void onStartElement(String uri, String tag, String qname,
37 Attributes attrs,
38 ArooaContext context)
39 throws SAXParseException {
40 if (handler1OK) {
41 ArooaHandler handler1 = (ArooaHandler) handlers1.peek();
42 try {
43 handler1.onStartElement(uri, tag, qname, attrs, context);
44 }
45 catch (Throwable t) {
46 logger.debug("Handler1, (" + handler1 + "), start element [" + tag + "] failed.", t);
47 handler1OK = false;
48 }
49 }
50 if (handler2OK) {
51 ArooaHandler handler2 = (ArooaHandler) handlers2.peek();
52 try {
53 handler2.onStartElement(uri, tag, qname, attrs, context);
54 }
55 catch (Throwable t) {
56 logger.debug("Handler2 (" + handler2 + "), start element [" + tag + "] failed.", t);
57 handler2OK = false;
58 }
59 }
60 }
61
62 public ArooaHandler onStartChild(String uri, String tag, String qname,
63 Attributes attrs,
64 ArooaContext context)
65 throws SAXParseException {
66 if (handler1OK) {
67 ArooaHandler handler1 = (ArooaHandler) handlers1.peek();
68 try {
69 ArooaHandler nextHandler = handler1.onStartChild(uri, tag, qname, attrs, context);
70 handlers1.push(nextHandler);
71 }
72 catch (Throwable t) {
73 logger.debug("Handler1, start child [" + tag + "] failed.", t);
74 handler1OK = false;
75 }
76 }
77 if (handler2OK) {
78 ArooaHandler handler2 = (ArooaHandler) handlers2.peek();
79 try {
80 ArooaHandler nextHandler = handler2.onStartChild(uri, tag, qname, attrs, context);
81 handlers2.push(nextHandler);
82 }
83 catch (Throwable t) {
84 logger.debug("Handler2, start child [" + tag + "] failed.", t);
85 handler2OK = false;
86 }
87 }
88 return this;
89 }
90
91 public void onEndChild(String uri, String tag, String qname,
92 ArooaContext context)
93 throws SAXParseException {
94 if (handler1OK) {
95 handlers1.pop();
96 ArooaHandler handler1 = (ArooaHandler) handlers1.peek();
97 try {
98 handler1.onEndChild(uri, tag, qname, context);
99 }
100 catch (Throwable t) {
101 logger.debug("Handler1, end child [" + tag + "] failed.", t);
102 handler1OK = false;
103 }
104 }
105 if (handler2OK) {
106 handlers2.pop();
107 ArooaHandler handler2 = (ArooaHandler) handlers2.peek();
108 try {
109 handler2.onEndChild(uri, tag, qname, context);
110 }
111 catch (Throwable t) {
112 logger.debug("Handler2, end child [" + tag + "] failed.", t);
113 handler2OK = false;
114 }
115 }
116 }
117
118 public void onEndElement(String uri, String tag,
119 ArooaContext context) {
120 if (handler1OK) {
121 ArooaHandler handler1 = (ArooaHandler) handlers1.peek();
122 try {
123 handler1.onEndElement(uri, tag, context);
124 }
125 catch (Throwable t) {
126 logger.debug("Handler1, end element [" + tag + "] failed.", t);
127 handler1OK = false;
128 }
129 }
130 if (handler2OK) {
131 ArooaHandler handler2 = (ArooaHandler) handlers2.peek();
132 try {
133 handler2.onEndElement(uri, tag, context);
134 }
135 catch (Throwable t) {
136 logger.debug("Handler2, end element [" + tag + "] failed.", t);
137 handler2OK = false;
138 }
139 }
140 }
141
142 public void characters(char[] buf, int start, int count, ArooaContext context)
143 throws SAXParseException {
144 if (handler1OK) {
145 ArooaHandler handler1 = (ArooaHandler) handlers1.peek();
146 try {
147 handler1.characters(buf, start, count, context);
148 }
149 catch (Throwable t) {
150 logger.debug("Handler1 (" + handler1 + "), characters [" + new String (buf, start, count) + "] failed.", t);
151 handler1OK = false;
152 }
153 }
154 if (handler2OK) {
155 ArooaHandler handler2 = (ArooaHandler) handlers2.peek();
156 try {
157 handler2.characters(buf, start, count, context);
158 }
159 catch (Throwable t) {
160 logger.debug("Handler2 (" + handler2 + "), characters [" + new String (buf, start, count) + "] failed.", t);
161 handler2OK = false;
162 }
163 }
164 }
165
166 }
167
168 |
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