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1
6
7 package SOFA.Connector.EEG;
8
9 import org.w3c.dom.Document  ;
10 import org.w3c.dom.Element ;
11 import org.w3c.dom.Node ;
12
13
18 public class EEGenerator {
19
20 protected java.util.LinkedList plugin;
21
22 protected javax.xml.parsers.DocumentBuilderFactory documentBuilderFactory;
23 protected javax.xml.parsers.DocumentBuilder documentBuilder;
24
25 protected Document configDoc;
26
27 static public String getTypesPackage() {
28 return "SOFA.Connector.EEG.Types";
29 }
30
31
32 public EEGenerator() throws EEGeneratorException {
33 try {
34 documentBuilderFactory=javax.xml.parsers.DocumentBuilderFactory.newInstance();
35 documentBuilder=documentBuilderFactory.newDocumentBuilder();
36
37 configDoc=documentBuilder.parse(new java.io.File (getEEGConfigRoot()+"/"+System.getProperty("SOFA.Connector.EEG.Config","conf.xml")));
38
39 Element elParent=configDoc.getDocumentElement();
40 Node elPlugins, elPlugin, elProp;
41
42 plugin=new java.util.LinkedList ();
43
44 System.out.println("Loading EEG plugins:");
45 elPlugins=elParent.getFirstChild();
46 while (elPlugins!=null) {
47 if (elPlugins.getNodeType()==Node.ELEMENT_NODE && elPlugins.getNodeName().equals("EEGPlugins")) {
48 elPlugin=elPlugins.getFirstChild();
49 while (elPlugin!=null) {
50 if (elPlugin.getNodeType()==Node.ELEMENT_NODE && elPlugin.getNodeName().equals("EEGPlugin")) {
51
52 java.util.HashMap props=new java.util.HashMap ();
53 elProp=elPlugin.getFirstChild();
54 while (elProp!=null) {
55 if (elProp.getNodeType()==Node.ELEMENT_NODE) {
56 Element el=(Element )elProp;
57 if (el.getNodeName().equals("property") && el.hasAttribute("name") && el.hasAttribute("value")) {
58 props.put(el.getAttribute("name"),el.getAttribute("value"));
59 }
60 }
61 elProp=elProp.getNextSibling();
62 }
63
64 System.out.println(" Loading plugin ("+((Element )elPlugin).getAttribute("class")+"):");
65
66 Class cls=Class.forName(((Element )elPlugin).getAttribute("class"));
67 Class [] coPar=new Class [1];
68 coPar[0]=Class.forName("java.util.HashMap");
69 java.lang.reflect.Constructor co=cls.getConstructor(coPar);
70
71 Object [] coInst=new Object [1];
72 coInst[0]=props;
73 EEGPluginInterface plgObject=(EEGPluginInterface)co.newInstance(coInst);
74
75 plugin.add(plgObject);
76 System.out.println(" Plugin "+plgObject.getName()+" ("+((Element )elPlugin).getAttribute("class")+") loaded.");
77 }
78 elPlugin=elPlugin.getNextSibling();
79 }
80 }
81 elPlugins=elPlugins.getNextSibling();
82 }
83
84 } catch (Exception e) {
85 throw new EEGeneratorException("Can't parse configuration",e);
86 }
87 }
88
89 public ElementsTechnologyDescriptor canGenerate(ElementQuery query) {
90 java.util.Iterator iter;
91 EEGPluginInterface plgObject;
92 ElementsTechnologyDescriptor etDescr=new ElementsTechnologyDescriptor();
93 java.util.LinkedList tDescr=new java.util.LinkedList ();
94
95 etDescr.type=query.type;
96 etDescr.instanceName=query.instanceName;
97 iter=plugin.iterator();
98 try {
99 for (;;) {
100 plgObject=(EEGPluginInterface)iter.next();
101 tDescr.addAll(java.util.Arrays.asList(plgObject.canGenerate(query)));
102 }
103 } catch (java.util.NoSuchElementException e) {
104 }
105
106 int i;
107 Object arr[];
108 etDescr.technologies=new ElementTechnologyDescriptor[(arr=tDescr.toArray()).length];
109 for (i=0;i<arr.length;i++) {
110 etDescr.technologies[i]=(ElementTechnologyDescriptor)arr[i];
111 }
112
113 return etDescr;
114 }
115
116 public ElementOutputDescriptor generate(ElementInputDescriptor elDescr) throws EEGeneratorException {
117 java.util.Iterator iter;
118 EEGPluginInterface plgObject;
119
120 int colonIndex=elDescr.implementation.indexOf(':');
121 String pluginName;
122
123 if (colonIndex==-1) {
124 pluginName=elDescr.implementation;
125 } else {
126 pluginName=elDescr.implementation.substring(0,colonIndex);
127 }
128
129 System.out.println(" Generating element '"+elDescr.implementation+"'");
130
131 iter=plugin.iterator();
132 try {
133 for (;;) {
134 plgObject=(EEGPluginInterface)iter.next();
135 if (pluginName.equals(plgObject.getName())) {
136 try {
137 ElementOutputDescriptor ret;
138 ret=plgObject.generate(elDescr);
139 return ret;
140 } catch (EEGPluginException e) {
141 throw new EEGeneratorException("Plugin failed",e);
142 }
143 }
144 }
145 } catch (java.util.NoSuchElementException e) {
146 throw new EEGeneratorException("Can't generate element.",e);
147 }
148 }
149
150 static public String getEEGRoot() throws EEGeneratorException {
151 try {
152 return System.getProperty("SOFA.Connector.Root","SOFA/Connector")+"/EEG";
153 } catch (Exception e) {
154 throw new EEGeneratorException("Can't access property SOFA.Connector.Root",e);
155 }
156 }
157
158 static public String getEEGConfigRoot() throws EEGeneratorException {
159 String configDir;
160 try {
161 configDir=System.getProperty("SOFA.Connector.Config");
162 } catch (Exception e) {
163 throw new EEGeneratorException("Can't access property SOFA.Connector.Config",e);
164 }
165 if (configDir==null) {
166 configDir=getEEGRoot();
167 } else {
168 configDir+="/EEG";
169 }
170 return configDir;
171 }
172 }
173 |
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