source: main/trunk/greenstone3/src/java/org/greenstone/gsdl3/action/FormatAction.java@ 23405

Last change on this file since 23405 was 23405, checked in by sjb48, 13 years ago

FormatAction constructs message containing format string that is sent to the collection. The message knows the service, and if it is the browse service, then it also knows the classifer list number.
File size: 6.3 KB
Line 
1package org.greenstone.gsdl3.action;
2
3import org.greenstone.gsdl3.core.ModuleInterface;
4import org.greenstone.gsdl3.util.*;
5import org.greenstone.util.GlobalProperties;
6
7// XML classes
8import org.w3c.dom.Node;
9import org.w3c.dom.Element;
10import org.w3c.dom.Document;
11
12// other java stuff
13import java.io.File;
14import java.util.HashMap;
15import java.util.*;
16import java.io.StringReader;
17import org.xml.sax.InputSource;
18import javax.xml.parsers.DocumentBuilder;
19import javax.xml.parsers.DocumentBuilderFactory;
20
21import java.io.*;
22import org.xml.sax.*;
23import javax.xml.parsers.SAXParserFactory;
24import javax.xml.parsers.ParserConfigurationException;
25import javax.xml.parsers.SAXParser;
26
27import java.io.PrintWriter;
28import java.io.StringWriter;
29
30import org.apache.log4j.*;
31
32public class FormatAction extends Action {
33
34 static Logger logger = Logger.getLogger(org.greenstone.gsdl3.action.FormatAction.class.getName());
35 XMLTransformer transformer = null;
36
37 String tempVal = "";
38
39 /** process a request */
40 public Node process (Node message_node) {
41
42 Element message = this.converter.nodeToElement(message_node);
43
44 // assume only one request
45 Element request = (Element)GSXML.getChildByTagName(message, GSXML.REQUEST_ELEM);
46
47 String subaction = request.getAttribute(GSXML.SUBACTION_ATT);
48 String lang = request.getAttribute(GSXML.LANG_ATT);
49 String uid = request.getAttribute(GSXML.USER_ID_ATT);
50 // get the param list
51 Element cgi_param_list = (Element)GSXML.getChildByTagName(request, GSXML.PARAM_ELEM+GSXML.LIST_MODIFIER);
52 HashMap params = GSXML.extractParams(cgi_param_list, false);
53
54 Element result = this.doc.createElement(GSXML.MESSAGE_ELEM);
55
56 String coll = (String)params.get(GSParams.COLLECTION); //SYSTEM_CLUSTER);
57 String service = (String)params.get(GSParams.SERVICE);
58 String classifier = (String)params.get("cl");
59
60
61 logger.error("Collection="+coll);
62 logger.error("Service="+service);
63 logger.error("Classifier="+classifier);
64
65
66 String to = "";
67 if (coll!=null && !coll.equals("")) {
68 to = coll;
69 }
70
71 Element mr_request_message = this.doc.createElement(GSXML.MESSAGE_ELEM);
72 Element mr_request = GSXML.createBasicRequest(this.doc, GSXML.REQUEST_TYPE_FORMAT_STRING, to, lang, uid);
73
74 request.setAttribute("service", service);
75 if(classifier != null)
76 request.setAttribute("classifier", classifier);
77
78 mr_request_message.appendChild(mr_request);
79
80 //Element format = this.doc.createElement(GSXML.FORMAT_STRING_ELEM);
81 //mr_request.appendChild(format);
82
83 String format_string = (String)params.get("data");
84
85 Element page_response = this.doc.createElement(GSXML.RESPONSE_ELEM);
86
87 Iterator it = params.keySet().iterator();
88 //while(it.hasNext())
89 //{
90 // logger.error("Param: "+it.next());
91 //}
92
93 try {
94 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
95 DocumentBuilder builder = factory.newDocumentBuilder();
96 //String input = "<html><head><title></title></head><body>" + format_string + "</body></html>";
97 String input = format_string;
98 InputSource is = new InputSource( new StringReader( input ) );
99 Document d = (Document) builder.parse( is );
100 //Element e = d.getDocumentElement();
101 //Node d2 = this.doc.importNode(e,true);
102
103 //Document format_doc = this.converter.newDOM();
104 //doc.appendChild(d2);
105
106 //File interface_config_file = new File(GSFile.interfaceConfigFile(GSFile.interfaceHome(GlobalProperties.getGSDL3Home(), (String)this.config_params.get(GSConstants.INTERFACE_NAME))));
107 //if (!interface_config_file.exists()) {
108 // logger.error(" interface config file: "+interface_config_file.getPath()+" not found!");
109 //}
110 //Document config_doc = this.converter.getDOM(interface_config_file, "utf-8");
111 //if (config_doc == null) {
112 // logger.error(" could not parse interface config file: "+interface_config_file.getPath());
113 //}
114
115 //Element config_elem = config_doc.getDocumentElement();
116 //String base_interface = config_elem.getAttribute("baseInterface");
117
118
119 // Call XSLT to transform document to xml format string
120 XMLTransformer transformer = new XMLTransformer();
121 //String stylesheet = GSFile.stylesheetFile(GlobalProperties.getGSDL3Home(), (String)this.config_params.get(GSConstants.SITE_NAME), coll, (String)this.config_params.get(GSConstants.INTERFACE_NAME), "oran", "FormatAction");
122 //logger.error(stylesheet);
123 Document style_doc = this.converter.getDOM(new File("/home/sam/greenstone3/web/interfaces/oran/transform/formatString.xsl"), "UTF-8");
124
125 if(style_doc == null)
126 logger.error("style_doc is null");
127
128 // not sure what to do here - some code from Transforming Receptionist
129 String transformed = transformer.transformToString(style_doc, d);
130 //Node transformed = transformer.transform(style_doc, d);
131
132 Element format = this.doc.createElement(GSXML.FORMAT_STRING_ELEM);
133 GSXML.setNodeText(format, transformed);
134 //format.appendChild(this.doc.createTextNode(transformed));
135 //format.setNodeValue(transformed);
136 mr_request.appendChild(format);
137 logger.error("Transformed: "+transformed);
138
139
140 //page_response.appendChild(this.doc.importNode(e, true));
141 } catch( Exception ex ) {
142 logger.error("There was an exception "+ex);
143
144 StringWriter sw = new StringWriter();
145 PrintWriter pw = new PrintWriter(sw, true);
146 ex.printStackTrace(pw);
147 pw.flush();
148 sw.flush();
149 logger.error(sw.toString());
150 }
151
152
153 // Call XSLT to transform document to xml format string
154 //XMLTransformer transformer = new XMLTransformer();
155
156 // not sure what to do here - some code from Transforming Receptionist
157 //transformer.transformToString(Document stylesheet, Document source);
158
159 // create a mesage to send to the collection object via the message router
160
161 Node response_message = this.mr.process(mr_request_message);
162
163 result.appendChild(GSXML.duplicateWithNewName(this.doc, (Element)GSXML.getChildByTagName(response_message, GSXML.RESPONSE_ELEM), GSXML.RESPONSE_ELEM, true));
164 return result;
165
166 }
167
168}
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