| 1 | package org.greenstone.gsdl3.action;
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| 2 |
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| 3 | import org.greenstone.gsdl3.core.ModuleInterface;
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| 4 | import org.greenstone.gsdl3.util.*;
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| 5 | import org.greenstone.util.GlobalProperties;
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| 6 |
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| 7 | // XML classes
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| 8 | import org.w3c.dom.Node;
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| 9 | import org.w3c.dom.Element;
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| 10 | import org.w3c.dom.Document;
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| 11 |
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| 12 | // other java stuff
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| 13 | import java.io.File;
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| 14 | import java.util.HashMap;
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| 15 | import java.util.*;
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| 16 | import java.io.StringReader;
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| 17 | import org.xml.sax.InputSource;
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| 18 | import javax.xml.parsers.DocumentBuilder;
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| 19 | import javax.xml.parsers.DocumentBuilderFactory;
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| 20 |
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| 21 | import java.io.*;
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| 22 | import org.xml.sax.*;
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| 23 | import javax.xml.parsers.SAXParserFactory;
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| 24 | import javax.xml.parsers.ParserConfigurationException;
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| 25 | import javax.xml.parsers.SAXParser;
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| 26 |
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| 27 | import java.io.PrintWriter;
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| 28 | import java.io.StringWriter;
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| 29 |
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| 30 | import org.apache.log4j.*;
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| 31 |
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| 32 | public class FormatAction extends Action {
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| 33 |
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| 34 | static Logger logger = Logger.getLogger(org.greenstone.gsdl3.action.FormatAction.class.getName());
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| 35 | XMLTransformer transformer = null;
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| 36 |
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| 37 | String tempVal = "";
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| 38 |
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| 39 | /** process a request */
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| 40 | public Node process (Node message_node) {
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| 41 |
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| 42 | Element message = this.converter.nodeToElement(message_node);
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| 43 |
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| 44 | // assume only one request
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| 45 | Element request = (Element)GSXML.getChildByTagName(message, GSXML.REQUEST_ELEM);
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| 46 |
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| 47 | String subaction = request.getAttribute(GSXML.SUBACTION_ATT);
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| 48 | String lang = request.getAttribute(GSXML.LANG_ATT);
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| 49 | String uid = request.getAttribute(GSXML.USER_ID_ATT);
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| 50 | // get the param list
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| 51 | Element cgi_param_list = (Element)GSXML.getChildByTagName(request, GSXML.PARAM_ELEM+GSXML.LIST_MODIFIER);
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| 52 | HashMap params = GSXML.extractParams(cgi_param_list, false);
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| 53 |
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| 54 | Element result = this.doc.createElement(GSXML.MESSAGE_ELEM);
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| 55 |
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| 56 | String coll = (String)params.get(GSParams.COLLECTION); //SYSTEM_CLUSTER);
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| 57 | //String subaction = (String)params.get(GSParams.SUBACTION);
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| 58 | String service = (String)params.get(GSParams.SERVICE);
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| 59 | String classifier = (String)params.get("cl");
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| 60 |
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| 61 |
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| 62 | logger.error("Collection="+coll);
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| 63 | logger.error("Subaction="+subaction);
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| 64 | logger.error("Service="+service);
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| 65 | logger.error("Classifier="+classifier);
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| 66 |
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| 67 |
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| 68 | String to = "";
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| 69 | if (coll!=null && !coll.equals("")) {
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| 70 | to = coll;
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| 71 | }
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| 72 |
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| 73 | Element mr_request_message = this.doc.createElement(GSXML.MESSAGE_ELEM);
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| 74 | Element mr_request = GSXML.createBasicRequest(this.doc, GSXML.REQUEST_TYPE_FORMAT_STRING, to, lang, uid);
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| 75 |
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| 76 | mr_request.setAttribute("service", service);
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| 77 | mr_request.setAttribute("subaction", subaction);
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| 78 | //if(classifier != null)
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| 79 | mr_request.setAttribute("classifier", classifier);
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| 80 |
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| 81 | mr_request_message.appendChild(mr_request);
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| 82 |
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| 83 | //Element format = this.doc.createElement(GSXML.FORMAT_STRING_ELEM);
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| 84 | //mr_request.appendChild(format);
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| 85 |
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| 86 | String format_string = (String)params.get("data");
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| 87 | //logger.error("Original format string");
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| 88 | //logger.error(format_string);
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| 89 |
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| 90 | Element page_response = this.doc.createElement(GSXML.RESPONSE_ELEM);
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| 91 |
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| 92 | Iterator it = params.keySet().iterator();
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| 93 | //while(it.hasNext())
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| 94 | //{
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| 95 | // logger.error("Param: "+it.next());
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| 96 | //}
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| 97 |
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| 98 | try {
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| 99 | DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
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| 100 | DocumentBuilder builder = factory.newDocumentBuilder();
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| 101 | //String input = "<html><head><title></title></head><body>" + format_string + "</body></html>";
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| 102 | String input = format_string;
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| 103 | InputSource is = new InputSource( new StringReader( input ) );
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| 104 | Document d = (Document) builder.parse( is );
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| 105 | //Node n1 = d.getFirstChild();
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| 106 | //Document d2 = (Document) this.doc.importNode(e, true);
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| 107 |
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| 108 | //Element format_statement = this.doc.importNode(d, true);
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| 109 |
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| 110 | // Call XSLT to transform document to xml format string
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| 111 | XMLTransformer transformer = new XMLTransformer();
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| 112 | // HOW DO I DO THIS PROPERLY?
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| 113 | Document style_doc = this.converter.getDOM(new File("/home/sam/greenstone3/web/interfaces/oran/transform/formatString.xsl"), "UTF-8");
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| 114 |
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| 115 | if(style_doc == null)
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| 116 | logger.error("style_doc is null");
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| 117 |
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| 118 | // not sure what to do here - some code from Transforming Receptionist
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| 119 | String transformed = transformer.transformToString(style_doc, d);
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| 120 | logger.error("About to transform");
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| 121 | //Node transformed = (Node) transformer.transform(style_doc, d); // Failing org.w3c.dom.DOMException: HIERARCHY_REQUEST_ERR: An attempt was made to insert a node where it is not permitted. ; SystemID: file:///home/sam/greenstone3/packages/tomcat/bin/dummy.xsl
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| 122 |
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| 123 | logger.error("Transform successful?");
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| 124 |
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| 125 | if(transformed==null) // not null
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| 126 | logger.error("TRANSFORMED IS NULL");
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| 127 |
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| 128 | //logger.error("begin import");
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| 129 | //Node imported = this.doc.importNode(transformed, true); // There was an exception org.w3c.dom.DOMException: NOT_SUPPORTED_ERR: The implementation does not support the requested type of object or operation.
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| 130 | //logger.error("finished import");
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| 131 |
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| 132 | //String format_string2 = GSXML.xmlNodeToString(imported); // null pointer exception occuring here
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| 133 | //logger.error("format string="+format_string2);
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| 134 |
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| 135 | Element format = this.doc.createElement(GSXML.FORMAT_STRING_ELEM);
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| 136 | GSXML.setNodeText(format, transformed);
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| 137 | //format.appendChild(transformed);
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| 138 | //format.setNodeValue(transformed);
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| 139 | mr_request.appendChild(format);
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| 140 | logger.error("Transformed: "+transformed);
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| 141 |
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| 142 |
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| 143 | //page_response.appendChild(this.doc.importNode(e, true));
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| 144 | } catch( Exception ex ) {
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| 145 | logger.error("There was an exception "+ex);
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| 146 |
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| 147 | StringWriter sw = new StringWriter();
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| 148 | PrintWriter pw = new PrintWriter(sw, true);
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| 149 | ex.printStackTrace(pw);
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| 150 | pw.flush();
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| 151 | sw.flush();
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| 152 | logger.error(sw.toString());
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| 153 | }
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| 154 |
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| 155 |
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| 156 | // Call XSLT to transform document to xml format string
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| 157 | //XMLTransformer transformer = new XMLTransformer();
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| 158 |
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| 159 | // not sure what to do here - some code from Transforming Receptionist
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| 160 | //transformer.transformToString(Document stylesheet, Document source);
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| 161 |
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| 162 | // create a mesage to send to the collection object via the message router
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| 163 |
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| 164 | Node response_message = this.mr.process(mr_request_message);
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| 165 |
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| 166 | result.appendChild(GSXML.duplicateWithNewName(this.doc, (Element)GSXML.getChildByTagName(response_message, GSXML.RESPONSE_ELEM), GSXML.RESPONSE_ELEM, true));
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| 167 | return result;
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| 168 |
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| 169 | }
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| 170 |
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| 171 | }
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