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1 package org.exoplatform.services.xml.querying.impl.xtas;
2 import java.util.Collection  ;
3 import java.io.IOException ;
4 import org.xml.sax.SAXException ;
5 import javax.xml.parsers.ParserConfigurationException ;
6 import org.exoplatform.services.xml.querying.ConfigException;
7 import org.exoplatform.services.xml.querying.impl.xtas.resource.ResourceDescriptor;
8 import org.exoplatform.services.xml.querying.impl.xtas.xml.Utils;
9 import org.w3c.dom.Document ;
10 import org.w3c.dom.NodeList ;
11 import java.util.ArrayList ;
12 import org.w3c.dom.Node ;
13 import org.w3c.dom.Text ;
14
15
16 public class XMLConfig implements Config
17 {
18 private static XMLConfig config = null;
19 protected Collection resources;
20
21 protected XMLConfig(String fileName) throws IOException , SAXException ,
22 ParserConfigurationException , ConfigException
23 {
24
25 Document doc = Utils.createDocument(this.getClass().getResourceAsStream(fileName));
26 NodeList list1 = doc.getElementsByTagName("resource");
27
28 resources = new ArrayList ();
29
30 for(int i=0; i< list1.getLength(); i++) {
31 ResourceDescriptor descr = new ResourceDescriptor();
32 resources.add(descr);
33 Node params = list1.item(i);
34 NodeList list2 = params.getChildNodes();
35 for(int j=0;j <list2.getLength(); j++) {
36 Node param = list2.item(j);
37
38 if(param.hasChildNodes())
39 if( param.getNodeName().equals("name") )
40 descr.setName(((Text )param.getFirstChild()).getData());
41 else if( param.getNodeName().equals("classname") )
42 descr.setClassname(((Text )param.getFirstChild()).getData());
43 else if( param.getNodeName().equals("prefix") )
44 descr.setPrefix(((Text )param.getFirstChild()).getData());
45 else if( param.getNodeName().equals("description") )
46 descr.setDescription(((Text )param.getFirstChild()).getData());
47
48
50 }
51 }
52
53 if (resources.size() == 0)
54 throw new ConfigException("Xtas Config Exception - there are No Resources in config!");
55
56 }
57
58 public static XMLConfig getInstance() throws ConfigException
59 {
60 if (config == null) {
61 try {
62 config = new XMLConfig("/xtas-config.xml");
63 } catch (ConfigException e) {
64 throw e;
65 } catch (Exception e) {
66 throw new ConfigException("Error while creating XmlConfig! "+e);
67 }
68 }
69 return config;
70 }
71
72 public Collection getResources()
73 {
74 return resources;
75 }
76
77 }
78 |
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