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1 package org.sapia.soto.config;
2
3 import org.dom4j.Element;
4 import org.dom4j.io.SAXReader;
5
6 import org.sapia.util.text.TemplateContextIF;
7 import org.sapia.util.xml.ProcessingException;
8 import org.sapia.util.xml.confix.ConfigurationException;
9 import org.sapia.util.xml.confix.Dom4jProcessor;
10 import org.sapia.util.xml.confix.ObjectFactoryIF;
11 import org.sapia.util.xml.confix.XMLConsumer;
12 import org.xml.sax.InputSource  ;
13
14
15
24 public class Condition implements XMLConsumer {
25 private String _name;
26 private String _elemName;
27 private String _equals;
28 private TemplateContextIF _ctx;
29 private ObjectFactoryIF _fac;
30 private Element _elem;
31
32 public Condition(String elemName, TemplateContextIF ctx, ObjectFactoryIF fac) {
33 _ctx = ctx;
34 _fac = fac;
35 _elemName = elemName;
36 }
37
38 public void setParam(String name) {
39 _name = name;
40 }
41
42 public void setEquals(String eq) {
43 _equals = eq;
44 }
45
46 public boolean isEqual() {
47 Object val = _ctx.getValue(_name);
48
49 if (val == null) {
50 return false;
51 }
52
53 if (_equals == null) {
54 return true;
55 }
56
57 return val.toString().equals(_equals);
58 }
59
60 public Object create() throws ConfigurationException {
61 if ((_elem == null) || (_name == null)) {
62 return new NullObjectImpl();
63 }
64
65 if (isEqual()) {
66 Dom4jProcessor proc = new Dom4jProcessor(_fac);
67
68 try {
69 return proc.process(null, _elem);
70 } catch (ProcessingException e) {
71 throw new ConfigurationException("Could not process xml nested in 'if' element",
72 e);
73 }
74 }
75
76 return new NullObjectImpl();
77 }
78
79
82 public void consume(InputSource is) throws Exception {
83 if (_elem != null) {
84 throw new ConfigurationException("'" + _elemName +
85 "' only takes a SINGLE nested xml element");
86 }
87 SAXReader reader = new SAXReader();
88 _elem = reader.read(is).getRootElement();
89 }
90 }
91 |
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