[4258] | 1 | package org.greenstone.gsdl3.core;
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| 2 |
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[22085] | 3 | import org.greenstone.util.GlobalProperties;
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[4258] | 4 | import org.greenstone.gsdl3.util.*;
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| 5 | import org.greenstone.gsdl3.action.*;
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| 6 | // XML classes
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[24458] | 7 | import org.w3c.dom.Node;
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| 8 | import org.w3c.dom.NodeList;
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[23794] | 9 | import org.w3c.dom.Comment;
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| 10 | import org.w3c.dom.Text;
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[24458] | 11 | import org.w3c.dom.Document;
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[18433] | 12 | import org.w3c.dom.Element;
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| 13 | import org.xml.sax.InputSource;
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[23794] | 14 | import org.w3c.dom.NamedNodeMap;
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[4258] | 15 |
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| 16 | // other java classes
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| 17 | import java.io.File;
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[18433] | 18 | import java.io.StringWriter;
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| 19 | import java.io.FileReader;
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| 20 | import java.io.FileNotFoundException;
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[4258] | 21 | import java.util.HashMap;
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| 22 | import java.util.Enumeration;
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| 23 |
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[18433] | 24 | import javax.xml.parsers.*;
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| 25 | import javax.xml.transform.*;
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| 26 | import javax.xml.transform.dom.*;
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| 27 | import javax.xml.transform.stream.*;
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[13124] | 28 | import org.apache.log4j.*;
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[18433] | 29 | import org.apache.xerces.dom.*;
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| 30 | import org.apache.xerces.parsers.DOMParser;
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[13124] | 31 |
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[23794] | 32 | import org.apache.commons.lang3.StringUtils;
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| 33 |
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[24458] | 34 | /**
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| 35 | * A receptionist that uses xslt to transform the page_data before returning it.
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| 36 | * . Receives requests consisting of an xml representation of cgi args, and
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| 37 | * returns the page of data - in html by default. The requests are processed by
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| 38 | * the appropriate action class
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| 39 | *
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[4258] | 40 | * @see Action
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| 41 | */
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[24458] | 42 | public class TransformingReceptionist extends Receptionist
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| 43 | {
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[4258] | 44 |
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[24458] | 45 | static Logger logger = Logger.getLogger(org.greenstone.gsdl3.core.TransformingReceptionist.class.getName());
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[18433] | 46 |
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[24458] | 47 | /** The preprocess.xsl file is in a fixed location */
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| 48 | static final String preprocess_xsl_filename = GlobalProperties.getGSDL3Home() + File.separatorChar + "ui" + File.separatorChar + "xslt" + File.separatorChar + "preProcess.xsl";
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[18433] | 49 |
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[24458] | 50 | /** the list of xslt to use for actions */
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| 51 | protected HashMap xslt_map = null;
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[8921] | 52 |
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[24458] | 53 | /** a transformer class to transform xml using xslt */
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| 54 | protected XMLTransformer transformer = null;
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[4258] | 55 |
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[24458] | 56 | protected TransformerFactory transformerFactory = null;
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| 57 | protected DOMParser parser = null;
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[4258] | 58 |
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[24458] | 59 | public TransformingReceptionist()
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| 60 | {
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| 61 | super();
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| 62 | this.xslt_map = new HashMap();
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| 63 | this.transformer = new XMLTransformer();
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| 64 | try
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| 65 | {
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| 66 | transformerFactory = org.apache.xalan.processor.TransformerFactoryImpl.newInstance();
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| 67 | this.converter = new XMLConverter();
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| 68 | //transformerFactory.setURIResolver(new MyUriResolver()) ;
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[4258] | 69 |
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[24458] | 70 | parser = new DOMParser();
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| 71 | parser.setFeature("http://xml.org/sax/features/validation", false);
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| 72 | // don't try and load external DTD - no need if we are not validating, and may cause connection errors if a proxy is not set up.
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| 73 | parser.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
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| 74 | // a performance test showed that having this on lead to increased
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| 75 | // memory use for small-medium docs, and not much gain for large
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| 76 | // docs.
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| 77 | // http://www.sosnoski.com/opensrc/xmlbench/conclusions.html
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| 78 | parser.setFeature("http://apache.org/xml/features/dom/defer-node-expansion", false);
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| 79 | parser.setFeature("http://apache.org/xml/features/continue-after-fatal-error", true);
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| 80 | // setting a handler for when fatal errors, errors or warnings happen during xml parsing
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| 81 | // call XMLConverter's getParseErrorMessage() to get the errorstring that can be rendered as web page
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| 82 | this.parser.setErrorHandler(new XMLConverter.ParseErrorHandler());
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| 83 | }
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| 84 | catch (Exception e)
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| 85 | {
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| 86 | e.printStackTrace();
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| 87 | }
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[4258] | 88 |
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[24458] | 89 | }
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[20149] | 90 |
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[24458] | 91 | /** configures the receptionist - overwrite this to set up the xslt map */
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| 92 | public boolean configure()
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| 93 | {
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| 94 |
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| 95 | if (this.config_params == null)
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| 96 | {
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| 97 | logger.error(" config variables must be set before calling configure");
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| 98 | return false;
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| 99 | }
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| 100 | if (this.mr == null)
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| 101 | {
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| 102 | logger.error(" message router must be set before calling configure");
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| 103 | return false;
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| 104 | }
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| 105 |
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| 106 | // find the config file containing a list of actions
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| 107 | File interface_config_file = new File(GSFile.interfaceConfigFile(GSFile.interfaceHome(GlobalProperties.getGSDL3Home(), (String) this.config_params.get(GSConstants.INTERFACE_NAME))));
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| 108 | if (!interface_config_file.exists())
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| 109 | {
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| 110 | logger.error(" interface config file: " + interface_config_file.getPath() + " not found!");
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| 111 | return false;
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| 112 | }
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| 113 | Document config_doc = this.converter.getDOM(interface_config_file, "utf-8");
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| 114 | if (config_doc == null)
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| 115 | {
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| 116 | logger.error(" could not parse interface config file: " + interface_config_file.getPath());
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| 117 | return false;
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| 118 | }
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| 119 | Element config_elem = config_doc.getDocumentElement();
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| 120 | String base_interface = config_elem.getAttribute("baseInterface");
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| 121 | setUpBaseInterface(base_interface);
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| 122 | setUpInterfaceOptions(config_elem);
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| 123 |
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| 124 | Element action_list = (Element) GSXML.getChildByTagName(config_elem, GSXML.ACTION_ELEM + GSXML.LIST_MODIFIER);
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| 125 | NodeList actions = action_list.getElementsByTagName(GSXML.ACTION_ELEM);
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| 126 |
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| 127 | for (int i = 0; i < actions.getLength(); i++)
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| 128 | {
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| 129 | Element action = (Element) actions.item(i);
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| 130 | String class_name = action.getAttribute("class");
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| 131 | String action_name = action.getAttribute("name");
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| 132 | Action ac = null;
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| 133 | try
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| 134 | {
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| 135 | ac = (Action) Class.forName("org.greenstone.gsdl3.action." + class_name).newInstance();
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| 136 | }
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| 137 | catch (Exception e)
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| 138 | {
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| 139 | logger.error(" couldn't load in action " + class_name);
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| 140 | e.printStackTrace();
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| 141 | continue;
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| 142 | }
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| 143 | ac.setConfigParams(this.config_params);
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| 144 | ac.setMessageRouter(this.mr);
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| 145 | ac.configure();
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| 146 | ac.getActionParameters(this.params);
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| 147 | this.action_map.put(action_name, ac);
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| 148 |
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| 149 | // now do the xslt map
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| 150 | String xslt = action.getAttribute("xslt");
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| 151 | if (!xslt.equals(""))
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| 152 | {
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| 153 | this.xslt_map.put(action_name, xslt);
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| 154 | }
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| 155 | NodeList subactions = action.getElementsByTagName(GSXML.SUBACTION_ELEM);
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| 156 | for (int j = 0; j < subactions.getLength(); j++)
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| 157 | {
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| 158 | Element subaction = (Element) subactions.item(j);
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| 159 | String subname = subaction.getAttribute(GSXML.NAME_ATT);
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| 160 | String subxslt = subaction.getAttribute("xslt");
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| 161 |
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| 162 | String map_key = action_name + ":" + subname;
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| 163 | logger.debug("adding in to xslt map, " + map_key + "->" + subxslt);
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| 164 | this.xslt_map.put(map_key, subxslt);
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| 165 | }
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| 166 | }
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| 167 | Element lang_list = (Element) GSXML.getChildByTagName(config_elem, "languageList");
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| 168 | if (lang_list == null)
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| 169 | {
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| 170 | logger.error(" didn't find a language list in the config file!!");
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| 171 | }
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| 172 | else
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| 173 | {
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| 174 | this.language_list = (Element) this.doc.importNode(lang_list, true);
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| 175 | }
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| 176 |
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| 177 | return true;
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[22786] | 178 | }
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| 179 |
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[24458] | 180 | protected Node postProcessPage(Element page)
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[22786] | 181 | {
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[24458] | 182 | // might need to add some data to the page
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| 183 | addExtraInfo(page);
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| 184 | // transform the page using xslt
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| 185 | Node transformed_page = transformPage(page);
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| 186 |
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| 187 | // if the user has specified they want only a part of the full page then subdivide it
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| 188 | boolean subdivide = false;
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| 189 | String excerptID = null;
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| 190 | String excerptTag = null;
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| 191 | Element request = (Element) GSXML.getChildByTagName(page, GSXML.PAGE_REQUEST_ELEM);
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| 192 | Element cgi_param_list = (Element) GSXML.getChildByTagName(request, GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
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| 193 | if (cgi_param_list != null)
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[22786] | 194 | {
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[24458] | 195 | HashMap params = GSXML.extractParams(cgi_param_list, false);
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| 196 | if ((excerptID = (String) params.get(GSParams.EXCERPT_ID)) != null)
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| 197 | {
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| 198 | subdivide = true;
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| 199 | }
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| 200 | if ((excerptTag = (String) params.get(GSParams.EXCERPT_TAG)) != null)
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| 201 | {
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| 202 | subdivide = true;
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| 203 | }
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[22786] | 204 | }
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[24458] | 205 |
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| 206 | if (subdivide)
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| 207 | {
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| 208 | Node subdivided_page = subdivide(transformed_page, excerptID, excerptTag);
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| 209 | if (subdivided_page != null)
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| 210 | {
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| 211 | return subdivided_page;
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| 212 | }
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| 213 | }
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| 214 |
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| 215 | return transformed_page;
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[22786] | 216 | }
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[24458] | 217 |
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| 218 | protected Node subdivide(Node transformed_page, String excerptID, String excerptTag)
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[22786] | 219 | {
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[24458] | 220 | if (excerptID != null)
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| 221 | {
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| 222 | Node selectedElement = getNodeByIdRecursive(transformed_page, excerptID);
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| 223 | modifyNodesByTagRecursive(selectedElement, "a");
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| 224 | return selectedElement;
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| 225 | }
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| 226 | else if (excerptTag != null)
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| 227 | {
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| 228 | /*
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| 229 | * // define a list
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| 230 | *
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| 231 | * Node selectedElement =
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| 232 | * modifyNodesByTagRecursive(transformed_page, excerptTag);
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| 233 | */
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| 234 |
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| 235 | Node selectedElement = getNodeByTagRecursive(transformed_page, excerptTag);
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| 236 | return selectedElement;
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| 237 |
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| 238 | }
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| 239 | return transformed_page;
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[22786] | 240 | }
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[24458] | 241 |
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| 242 | protected Node getNodeByIdRecursive(Node parent, String id)
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[22786] | 243 | {
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[24458] | 244 | if (parent.hasAttributes() && ((Element) parent).getAttribute("id").equals(id))
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| 245 | {
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| 246 | return parent;
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| 247 | }
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| 248 |
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| 249 | NodeList children = parent.getChildNodes();
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| 250 | for (int i = 0; i < children.getLength(); i++)
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| 251 | {
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| 252 | Node result = null;
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| 253 | if ((result = getNodeByIdRecursive(children.item(i), id)) != null)
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| 254 | {
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| 255 | return result;
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| 256 | }
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| 257 | }
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| 258 | return null;
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[22786] | 259 | }
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[24458] | 260 |
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| 261 | protected Node getNodeByTagRecursive(Node parent, String tag)
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[22786] | 262 | {
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[24458] | 263 | if (parent.getNodeType() == Node.ELEMENT_NODE && ((Element) parent).getTagName().equals(tag))
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| 264 | {
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| 265 | return parent;
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| 266 | }
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| 267 |
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| 268 | NodeList children = parent.getChildNodes();
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| 269 | for (int i = 0; i < children.getLength(); i++)
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| 270 | {
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| 271 | Node result = null;
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| 272 | if ((result = getNodeByTagRecursive(children.item(i), tag)) != null)
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| 273 | {
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| 274 | return result;
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| 275 | }
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| 276 | }
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| 277 | return null;
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[22786] | 278 | }
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[24458] | 279 |
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| 280 | protected Node modifyNodesByTagRecursive(Node parent, String tag)
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[22786] | 281 | {
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[24458] | 282 | if (parent.getNodeType() == Node.ELEMENT_NODE && ((Element) parent).getTagName().equals(tag))
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[22786] | 283 | {
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[24458] | 284 | return parent;
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[22786] | 285 | }
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[24458] | 286 |
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| 287 | NodeList children = parent.getChildNodes();
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| 288 | for (int i = 0; i < children.getLength(); i++)
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| 289 | {
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| 290 | Node result = null;
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| 291 | if ((result = modifyNodesByTagRecursive(children.item(i), tag)) != null)
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| 292 | {
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| 293 | //return result;
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| 294 | //logger.error("Modify node value = "+result.getNodeValue()); //NamedItem("href"););
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| 295 | logger.error("BEFORE Modify node attribute = " + result.getAttributes().getNamedItem("href").getNodeValue());
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| 296 | String url = result.getAttributes().getNamedItem("href").getNodeValue();
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| 297 | //url = url + "&excerptid=results";
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| 298 | result.getAttributes().getNamedItem("href").setNodeValue(url);
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| 299 | logger.error("AFTER Modify node attribute = " + result.getAttributes().getNamedItem("href").getNodeValue());
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| 300 |
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| 301 | }
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| 302 | }
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| 303 | return null;
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[22786] | 304 | }
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[24458] | 305 |
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| 306 | /**
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| 307 | * overwrite this to add any extra info that might be needed in the page
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| 308 | * before transformation
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| 309 | */
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| 310 | protected void addExtraInfo(Element page)
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[22786] | 311 | {
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| 312 | }
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[24458] | 313 |
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| 314 | /**
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| 315 | * transform the page using xslt we need to get any format element out of
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| 316 | * the page and add it to the xslt before transforming
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| 317 | */
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| 318 | protected Node transformPage(Element page)
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[22786] | 319 | {
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[24458] | 320 |
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| 321 | boolean allowsClientXSLT = (Boolean) config_params.get(GSConstants.ALLOW_CLIENT_SIDE_XSLT);
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| 322 | //System.out.println("Client side transforms allowed? " + allowsClientXSLT);
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| 323 |
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| 324 | String currentInterface = (String) config_params.get(GSConstants.INTERFACE_NAME);
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| 325 |
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| 326 | Element request = (Element) GSXML.getChildByTagName(page, GSXML.PAGE_REQUEST_ELEM);
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| 327 | String output = request.getAttribute(GSXML.OUTPUT_ATT);
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| 328 |
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| 329 | //System.out.println("Current output mode is: " + output + ", current interface name is: " + currentInterface);
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| 330 |
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| 331 | if (allowsClientXSLT)
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[22786] | 332 | {
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[24458] | 333 | if (!currentInterface.endsWith(GSConstants.CLIENT_SIDE_XSLT_INTERFACE_SUFFIX) && output.equals("html"))
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| 334 | {
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| 335 | System.out.println("output is html and we are not currently using a client side version, switching");
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| 336 | // Switch the interface
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| 337 | config_params.put(GSConstants.INTERFACE_NAME, currentInterface.concat(GSConstants.CLIENT_SIDE_XSLT_INTERFACE_SUFFIX));
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| 338 | }
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| 339 | else if ((currentInterface.endsWith(GSConstants.CLIENT_SIDE_XSLT_INTERFACE_SUFFIX) && !output.equals("html")) || output.equals("server"))
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| 340 | {
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| 341 | // The reverse needs to happen too
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| 342 | config_params.put(GSConstants.INTERFACE_NAME, currentInterface.substring(0, currentInterface.length() - GSConstants.CLIENT_SIDE_XSLT_INTERFACE_SUFFIX.length()));
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| 343 | }
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[22786] | 344 | }
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[24458] | 345 | else if (currentInterface.endsWith(GSConstants.CLIENT_SIDE_XSLT_INTERFACE_SUFFIX))
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| 346 | {
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| 347 | config_params.put(GSConstants.INTERFACE_NAME, currentInterface.substring(0, currentInterface.length() - GSConstants.CLIENT_SIDE_XSLT_INTERFACE_SUFFIX.length()));
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| 348 | }
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[23298] | 349 |
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[24458] | 350 | // DocType defaults in case the skin doesn't have an "xsl:output" element
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| 351 | String qualifiedName = "html";
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| 352 | String publicID = "-//W3C//DTD HTML 4.01 Transitional//EN";
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| 353 | String systemID = "http://www.w3.org/TR/html4/loose.dtd";
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[4258] | 354 |
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[24458] | 355 | // We need to create an empty document with a predefined DocType,
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| 356 | // that will then be used for the transformation by the DOMResult
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| 357 | Document docWithDoctype = converter.newDOM(qualifiedName, publicID, systemID);
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[23968] | 358 |
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[24458] | 359 | if (output.equals("xsltclient"))
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| 360 | {
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| 361 | // If you're just getting the client-side transform page, why bother with the rest of this?
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| 362 | Element html = docWithDoctype.createElement("html");
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| 363 | Element img = docWithDoctype.createElement("img");
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| 364 | img.setAttribute("src", "interfaces/default/images/loading.gif"); // Make it dynamic
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| 365 | img.setAttribute("alt", "Please wait...");
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| 366 | Text title_text = docWithDoctype.createTextNode("Please wait..."); // Make this language dependent
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| 367 | Element head = docWithDoctype.createElement("head");
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| 368 | Element title = docWithDoctype.createElement("title");
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| 369 | title.appendChild(title_text);
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| 370 | Element body = docWithDoctype.createElement("body");
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| 371 | Element script = docWithDoctype.createElement("script");
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| 372 | Element jquery = docWithDoctype.createElement("script");
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| 373 | jquery.setAttribute("src", "jquery.js");
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| 374 | jquery.setAttribute("type", "text/javascript");
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| 375 | Comment jquery_comment = docWithDoctype.createComment("jQuery");
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| 376 | Comment script_comment = docWithDoctype.createComment("Filler for browser");
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| 377 | script.setAttribute("src", "test.js");
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| 378 | script.setAttribute("type", "text/javascript");
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| 379 | Element pagevar = docWithDoctype.createElement("script");
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| 380 | Element style = docWithDoctype.createElement("style");
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| 381 | style.setAttribute("type", "text/css");
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| 382 | Text style_text = docWithDoctype.createTextNode("body { text-align: center; padding: 50px; font: 14pt Arial, sans-serif; font-weight: bold; }");
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| 383 | pagevar.setAttribute("type", "text/javascript");
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| 384 | Text page_var_text = docWithDoctype.createTextNode("var placeholder = true;");
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[23968] | 385 |
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[24458] | 386 | html.appendChild(head);
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| 387 | head.appendChild(title);
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| 388 | head.appendChild(style);
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| 389 | style.appendChild(style_text);
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| 390 | html.appendChild(body);
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| 391 | head.appendChild(pagevar);
|
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| 392 | head.appendChild(jquery);
|
---|
| 393 | head.appendChild(script);
|
---|
| 394 | pagevar.appendChild(page_var_text);
|
---|
| 395 | jquery.appendChild(jquery_comment);
|
---|
| 396 | script.appendChild(script_comment);
|
---|
| 397 | body.appendChild(img);
|
---|
| 398 | docWithDoctype.appendChild(html);
|
---|
[23968] | 399 |
|
---|
[24458] | 400 | return (Node) docWithDoctype;
|
---|
| 401 | }
|
---|
[23968] | 402 |
|
---|
[24458] | 403 | // Passing in the pretty string here means it needs to be generated even when not debugging; so use custom function to return blank when debug is off
|
---|
| 404 | logger.debug("page before transforming:");
|
---|
| 405 | logger.debug(this.converter.getPrettyStringLogger(page, logger));
|
---|
| 406 |
|
---|
| 407 | String action = request.getAttribute(GSXML.ACTION_ATT);
|
---|
| 408 | String subaction = request.getAttribute(GSXML.SUBACTION_ATT);
|
---|
| 409 |
|
---|
| 410 | // we should choose how to transform the data based on output, eg diff
|
---|
| 411 | // choice for html, and wml??
|
---|
| 412 | // for now, if output=xml, we don't transform the page, we just return
|
---|
| 413 | // the page xml
|
---|
| 414 | Document theXML = null;
|
---|
| 415 |
|
---|
| 416 | if (output.equals("xml") || output.equals("clientside"))
|
---|
[23968] | 417 | {
|
---|
[24458] | 418 | // Append some bits and pieces first...
|
---|
| 419 | theXML = converter.newDOM();
|
---|
| 420 | // Import into new document first!
|
---|
| 421 | Node newPage = theXML.importNode(page, true);
|
---|
| 422 | theXML.appendChild(newPage);
|
---|
| 423 | Element root = theXML.createElement("xsltparams");
|
---|
| 424 | newPage.appendChild(root);
|
---|
| 425 |
|
---|
| 426 | Element libname = theXML.createElement("param");
|
---|
| 427 | libname.setAttribute("name", "library_name");
|
---|
| 428 | Text libnametext = theXML.createTextNode((String) config_params.get(GSConstants.LIBRARY_NAME));
|
---|
| 429 | libname.appendChild(libnametext);
|
---|
| 430 |
|
---|
| 431 | Element intname = theXML.createElement("param");
|
---|
| 432 | intname.setAttribute("name", "interface_name");
|
---|
| 433 | Text intnametext = theXML.createTextNode((String) config_params.get(GSConstants.INTERFACE_NAME));
|
---|
| 434 | intname.appendChild(intnametext);
|
---|
| 435 |
|
---|
| 436 | Element filepath = theXML.createElement("param");
|
---|
| 437 | filepath.setAttribute("name", "filepath");
|
---|
| 438 | Text filepathtext = theXML.createTextNode(GlobalProperties.getGSDL3Home());
|
---|
| 439 | filepath.appendChild(filepathtext);
|
---|
| 440 |
|
---|
| 441 | root.appendChild(libname);
|
---|
| 442 | root.appendChild(intname);
|
---|
| 443 | root.appendChild(filepath);
|
---|
| 444 |
|
---|
| 445 | if (output.equals("xml"))
|
---|
| 446 | return theXML.getDocumentElement();
|
---|
[23968] | 447 | }
|
---|
[24458] | 448 |
|
---|
| 449 | Element cgi_param_list = (Element) GSXML.getChildByTagName(request, GSXML.PARAM_ELEM + GSXML.LIST_MODIFIER);
|
---|
| 450 | String collection = "";
|
---|
| 451 | if (cgi_param_list != null)
|
---|
[23968] | 452 | {
|
---|
[24458] | 453 | // Don't waste time getting all the parameters
|
---|
| 454 | HashMap params = GSXML.extractParams(cgi_param_list, false, GSParams.COLLECTION);
|
---|
| 455 | collection = (String) params.get(GSParams.COLLECTION);
|
---|
| 456 | if (collection == null)
|
---|
| 457 | collection = "";
|
---|
[23968] | 458 | }
|
---|
[4258] | 459 |
|
---|
[24458] | 460 | String xslt_file = getXSLTFileName(action, subaction, collection);
|
---|
| 461 | if (xslt_file == null)
|
---|
| 462 | {
|
---|
| 463 | // returning file not found error page to indicate which file is missing
|
---|
| 464 | return fileNotFoundErrorPage(xslt_file);
|
---|
| 465 | }
|
---|
[8562] | 466 |
|
---|
[24458] | 467 | Document style_doc = this.converter.getDOM(new File(xslt_file), "UTF-8");
|
---|
| 468 | String errorPage = this.converter.getParseErrorMessage();
|
---|
| 469 | if (errorPage != null)
|
---|
| 470 | {
|
---|
| 471 | return XMLTransformer.constructErrorXHTMLPage("Cannot parse the xslt file: " + xslt_file + "\n" + errorPage);
|
---|
| 472 | }
|
---|
| 473 | if (style_doc == null)
|
---|
| 474 | {
|
---|
| 475 | logger.error(" cant parse the xslt file needed, so returning the original page!");
|
---|
| 476 | return page;
|
---|
| 477 | }
|
---|
[23794] | 478 |
|
---|
[24458] | 479 | // put the page into a document - this is necessary for xslt to get
|
---|
| 480 | // the paths right if you have paths relative to the document root
|
---|
| 481 | // eg /page.
|
---|
| 482 | Document doc = this.converter.newDOM();
|
---|
| 483 | doc.appendChild(doc.importNode(page, true));
|
---|
| 484 | Element page_response = (Element) GSXML.getChildByTagName(page, GSXML.PAGE_RESPONSE_ELEM);
|
---|
| 485 | Element format_elem = (Element) GSXML.getChildByTagName(page_response, GSXML.FORMAT_ELEM);
|
---|
| 486 | if (output.equals("formatelem"))
|
---|
| 487 | {
|
---|
| 488 | return format_elem;
|
---|
| 489 | }
|
---|
| 490 | if (format_elem != null)
|
---|
| 491 | {
|
---|
| 492 | //page_response.removeChild(format_elem);
|
---|
| 493 | logger.debug("format elem=" + this.converter.getPrettyStringLogger(format_elem, logger));
|
---|
| 494 | // need to transform the format info
|
---|
| 495 | String configStylesheet_file = GSFile.stylesheetFile(GlobalProperties.getGSDL3Home(), (String) this.config_params.get(GSConstants.SITE_NAME), collection, (String) this.config_params.get(GSConstants.INTERFACE_NAME), base_interfaces, "config_format.xsl");
|
---|
| 496 | Document configStylesheet_doc = this.converter.getDOM(new File(configStylesheet_file));
|
---|
[9405] | 497 |
|
---|
[24458] | 498 | if (configStylesheet_doc != null)
|
---|
| 499 | {
|
---|
| 500 | Document format_doc = this.converter.newDOM();
|
---|
| 501 | format_doc.appendChild(format_doc.importNode(format_elem, true));
|
---|
| 502 | Node result = this.transformer.transform(configStylesheet_doc, format_doc, config_params); // Needs addressing <-
|
---|
[23794] | 503 |
|
---|
[24458] | 504 | // Since we started creating documents with DocTypes, we can end up with
|
---|
| 505 | // Document objects here. But we will be working with an Element instead,
|
---|
| 506 | // so we grab the DocumentElement() of the Document object in such a case.
|
---|
| 507 | Element new_format;
|
---|
| 508 | if (result.getNodeType() == Node.DOCUMENT_NODE)
|
---|
| 509 | {
|
---|
| 510 | new_format = ((Document) result).getDocumentElement();
|
---|
| 511 | }
|
---|
| 512 | else
|
---|
| 513 | {
|
---|
| 514 | new_format = (Element) result;
|
---|
| 515 | }
|
---|
| 516 | logger.debug("new format elem=" + this.converter.getPrettyStringLogger(new_format, logger));
|
---|
| 517 | if (output.equals("newformat"))
|
---|
| 518 | {
|
---|
| 519 | return new_format;
|
---|
| 520 | }
|
---|
[4258] | 521 |
|
---|
[24458] | 522 | // add extracted GSF statements in to the main stylesheet
|
---|
| 523 | GSXSLT.mergeStylesheets(style_doc, new_format);
|
---|
| 524 | //System.out.println("added extracted GSF statements into the main stylesheet") ;
|
---|
[18433] | 525 |
|
---|
[24458] | 526 | // add extracted GSF statements in to the debug test stylesheet
|
---|
| 527 | //GSXSLT.mergeStylesheets(oldStyle_doc, new_format);
|
---|
| 528 | }
|
---|
| 529 | else
|
---|
| 530 | {
|
---|
| 531 | logger.error(" couldn't parse the config_format stylesheet, adding the format info as is");
|
---|
| 532 | GSXSLT.mergeStylesheets(style_doc, format_elem);
|
---|
| 533 | //GSXSLT.mergeStylesheets(oldStyle_doc, format_elem);
|
---|
| 534 | }
|
---|
| 535 | logger.debug("the converted stylesheet is:");
|
---|
| 536 | logger.debug(this.converter.getPrettyStringLogger(style_doc.getDocumentElement(), logger));
|
---|
| 537 | }
|
---|
[18433] | 538 |
|
---|
[24458] | 539 | //for debug purposes only
|
---|
| 540 | Document oldStyle_doc = style_doc;
|
---|
[18433] | 541 |
|
---|
[24458] | 542 | Document preprocessingXsl;
|
---|
| 543 | try
|
---|
| 544 | {
|
---|
| 545 | preprocessingXsl = getPreprocessDoc();
|
---|
| 546 | String errMsg = ((XMLConverter.ParseErrorHandler) parser.getErrorHandler()).getErrorMessage();
|
---|
| 547 | if (errMsg != null)
|
---|
| 548 | {
|
---|
| 549 | return XMLTransformer.constructErrorXHTMLPage("error loading preprocess xslt file: " + preprocess_xsl_filename + "\n" + errMsg);
|
---|
| 550 | }
|
---|
| 551 | }
|
---|
| 552 | catch (java.io.FileNotFoundException e)
|
---|
| 553 | {
|
---|
| 554 | return fileNotFoundErrorPage(e.getMessage());
|
---|
| 555 | }
|
---|
| 556 | catch (Exception e)
|
---|
| 557 | {
|
---|
| 558 | e.printStackTrace();
|
---|
| 559 | System.out.println("error loading preprocess xslt");
|
---|
| 560 | return XMLTransformer.constructErrorXHTMLPage("error loading preprocess xslt\n" + e.getMessage());
|
---|
| 561 | }
|
---|
[18433] | 562 |
|
---|
[24458] | 563 | Document libraryXsl = null;
|
---|
| 564 | try
|
---|
| 565 | {
|
---|
| 566 | libraryXsl = getLibraryDoc();
|
---|
| 567 | String errMsg = ((XMLConverter.ParseErrorHandler) parser.getErrorHandler()).getErrorMessage();
|
---|
| 568 | if (errMsg != null)
|
---|
| 569 | {
|
---|
| 570 | return XMLTransformer.constructErrorXHTMLPage("Error loading xslt file: " + this.getLibraryXSLFilename() + "\n" + errMsg);
|
---|
| 571 | }
|
---|
| 572 | }
|
---|
| 573 | catch (java.io.FileNotFoundException e)
|
---|
| 574 | {
|
---|
| 575 | return fileNotFoundErrorPage(e.getMessage());
|
---|
| 576 | }
|
---|
| 577 | catch (Exception e)
|
---|
| 578 | {
|
---|
| 579 | e.printStackTrace();
|
---|
| 580 | System.out.println("error loading library xslt");
|
---|
| 581 | return XMLTransformer.constructErrorXHTMLPage("error loading library xslt\n" + e.getMessage());
|
---|
| 582 | }
|
---|
[16374] | 583 |
|
---|
[24458] | 584 | // Combine the skin file and library variables/templates into one document.
|
---|
| 585 | // Please note: We dont just use xsl:import because the preprocessing stage
|
---|
| 586 | // needs to know what's available in the library.
|
---|
[16374] | 587 |
|
---|
[24458] | 588 | Document skinAndLibraryXsl = null;
|
---|
| 589 | Document skinAndLibraryDoc = converter.newDOM();
|
---|
| 590 | try
|
---|
| 591 | {
|
---|
[16374] | 592 |
|
---|
[24458] | 593 | skinAndLibraryXsl = converter.newDOM();
|
---|
| 594 | Element root = skinAndLibraryXsl.createElement("skinAndLibraryXsl");
|
---|
| 595 | skinAndLibraryXsl.appendChild(root);
|
---|
[4258] | 596 |
|
---|
[24458] | 597 | Element s = skinAndLibraryXsl.createElement("skinXsl");
|
---|
| 598 | s.appendChild(skinAndLibraryXsl.importNode(style_doc.getDocumentElement(), true));
|
---|
| 599 | root.appendChild(s);
|
---|
[23794] | 600 |
|
---|
[24458] | 601 | Element l = skinAndLibraryXsl.createElement("libraryXsl");
|
---|
| 602 | Element libraryXsl_el = libraryXsl.getDocumentElement();
|
---|
| 603 | l.appendChild(skinAndLibraryXsl.importNode(libraryXsl_el, true));
|
---|
| 604 | root.appendChild(l);
|
---|
| 605 | //System.out.println("Skin and Library XSL are now together") ;
|
---|
[4258] | 606 |
|
---|
[24458] | 607 | //System.out.println("Pre-processing the skin file...") ;
|
---|
[18433] | 608 |
|
---|
[24458] | 609 | //pre-process the skin style sheet
|
---|
| 610 | //In other words, apply the preProcess.xsl to 'skinAndLibraryXsl' in order to
|
---|
| 611 | //expand all GS-Lib statements into complete XSL statements and also to create
|
---|
| 612 | //a valid xsl style sheet document.
|
---|
[18433] | 613 |
|
---|
[24458] | 614 | Transformer preProcessor = transformerFactory.newTransformer(new DOMSource(preprocessingXsl));
|
---|
| 615 | preProcessor.setErrorListener(new XMLTransformer.TransformErrorListener());
|
---|
| 616 | DOMResult result = new DOMResult();
|
---|
| 617 | result.setNode(skinAndLibraryDoc);
|
---|
| 618 | preProcessor.transform(new DOMSource(skinAndLibraryXsl), result);
|
---|
| 619 | //System.out.println("GS-Lib statements are now expanded") ;
|
---|
[18433] | 620 |
|
---|
[24458] | 621 | }
|
---|
| 622 | catch (TransformerException e)
|
---|
| 623 | {
|
---|
| 624 | e.printStackTrace();
|
---|
| 625 | System.out.println("TransformerException while preprocessing the skin xslt");
|
---|
| 626 | return XMLTransformer.constructErrorXHTMLPage(e.getMessage());
|
---|
| 627 | }
|
---|
| 628 | catch (Exception e)
|
---|
| 629 | {
|
---|
| 630 | e.printStackTrace();
|
---|
| 631 | System.out.println("Error while preprocessing the skin xslt");
|
---|
| 632 | return XMLTransformer.constructErrorXHTMLPage(e.getMessage());
|
---|
| 633 | }
|
---|
[18433] | 634 |
|
---|
[24458] | 635 | //The following code is to be uncommented if we need to append the extracted GSF statements
|
---|
| 636 | //after having extracted the GSLib elements. In case of a problem during postprocessing.
|
---|
| 637 | /*
|
---|
| 638 | * // put the page into a document - this is necessary for xslt to get
|
---|
| 639 | * // the paths right if you have paths relative to the document root //
|
---|
| 640 | * eg /page. Document doc = this.converter.newDOM();
|
---|
| 641 | * doc.appendChild(doc.importNode(page, true)); Element page_response =
|
---|
| 642 | * (Element)GSXML.getChildByTagName(page, GSXML.PAGE_RESPONSE_ELEM);
|
---|
| 643 | * Element format_elem = (Element)GSXML.getChildByTagName(page_response,
|
---|
| 644 | * GSXML.FORMAT_ELEM); if (output.equals("formatelem")) { return
|
---|
| 645 | * format_elem; } if (format_elem != null) {
|
---|
| 646 | * //page_response.removeChild(format_elem);
|
---|
| 647 | * logger.debug("format elem="+
|
---|
| 648 | * this.converter.getPrettyString(format_elem)); // need to transform
|
---|
| 649 | * the format info String configStylesheet_file =
|
---|
| 650 | * GSFile.stylesheetFile(GlobalProperties.getGSDL3Home(),
|
---|
| 651 | * (String)this.config_params.get(GSConstants.SITE_NAME), collection,
|
---|
| 652 | * (String)this.config_params.get(GSConstants.INTERFACE_NAME),
|
---|
| 653 | * base_interfaces, "config_format.xsl"); Document configStylesheet_doc
|
---|
| 654 | * = this.converter.getDOM(new File(configStylesheet_file)); if
|
---|
| 655 | * (configStylesheet_doc != null) { Document format_doc =
|
---|
| 656 | * this.converter.newDOM();
|
---|
| 657 | * format_doc.appendChild(format_doc.importNode(format_elem, true));
|
---|
| 658 | * Node result = this.transformer.transform(configStylesheet_doc,
|
---|
| 659 | * format_doc);
|
---|
| 660 | *
|
---|
| 661 | * // Since we started creating documents with DocTypes, we can end up
|
---|
| 662 | * with // Document objects here. But we will be working with an Element
|
---|
| 663 | * instead, // so we grab the DocumentElement() of the Document object
|
---|
| 664 | * in such a case. Element new_format; if(result.getNodeType() ==
|
---|
| 665 | * Node.DOCUMENT_NODE) { new_format =
|
---|
| 666 | * ((Document)result).getDocumentElement(); } else { new_format =
|
---|
| 667 | * (Element)result; }
|
---|
| 668 | * logger.debug("new format elem="+this.converter.getPrettyString
|
---|
| 669 | * (new_format)); if (output.equals("newformat")) { return new_format; }
|
---|
| 670 | *
|
---|
| 671 | * // add extracted GSF statements in to the main stylesheet
|
---|
| 672 | * GSXSLT.mergeStylesheets(skinAndLibraryDoc, new_format);
|
---|
| 673 | * //System.out.println
|
---|
| 674 | * ("added extracted GSF statements into the main stylesheet") ;
|
---|
| 675 | *
|
---|
| 676 | * // add extracted GSF statements in to the debug test stylesheet
|
---|
| 677 | * //GSXSLT.mergeStylesheets(oldStyle_doc, new_format); } else {
|
---|
| 678 | * logger.error(
|
---|
| 679 | * " couldn't parse the config_format stylesheet, adding the format info as is"
|
---|
| 680 | * ); GSXSLT.mergeStylesheets(skinAndLibraryDoc, format_elem); //
|
---|
| 681 | * GSXSLT.mergeStylesheets(oldStyle_doc, format_elem); }
|
---|
| 682 | * logger.debug("the converted stylesheet is:");
|
---|
| 683 | * logger.debug(this.converter
|
---|
| 684 | * .getPrettyString(skinAndLibraryDoc.getDocumentElement())); }
|
---|
| 685 | */
|
---|
[18433] | 686 |
|
---|
[24458] | 687 | // there is a thing called a URIResolver which you can set for a
|
---|
| 688 | // transformer or transformer factory. may be able to use this
|
---|
| 689 | // instead of this absoluteIncludepaths hack
|
---|
[18433] | 690 |
|
---|
[24458] | 691 | GSXSLT.absoluteIncludePaths(skinAndLibraryDoc, GlobalProperties.getGSDL3Home(), (String) this.config_params.get(GSConstants.SITE_NAME), collection, (String) this.config_params.get(GSConstants.INTERFACE_NAME), base_interfaces);
|
---|
[18433] | 692 |
|
---|
[24458] | 693 | //Same but for the debug version when we want the do the transformation like we use to do
|
---|
| 694 | //without any gslib elements.
|
---|
| 695 | GSXSLT.absoluteIncludePaths(oldStyle_doc, GlobalProperties.getGSDL3Home(), (String) this.config_params.get(GSConstants.SITE_NAME), collection, (String) this.config_params.get(GSConstants.INTERFACE_NAME), base_interfaces);
|
---|
[18433] | 696 |
|
---|
[24458] | 697 | //Send different stages of the skin xslt to the browser for debug purposes only
|
---|
| 698 | //using &o=skindoc or &o=skinandlib etc...
|
---|
| 699 | if (output.equals("skindoc"))
|
---|
| 700 | {
|
---|
| 701 | return converter.getDOM(getStringFromDocument(style_doc));
|
---|
| 702 | }
|
---|
| 703 | if (output.equals("skinandlib"))
|
---|
| 704 | {
|
---|
| 705 | return converter.getDOM(getStringFromDocument(skinAndLibraryXsl));
|
---|
| 706 | }
|
---|
| 707 | if (output.equals("skinandlibdoc") || output.equals("clientside"))
|
---|
| 708 | {
|
---|
[18433] | 709 |
|
---|
[24458] | 710 | Node skinAndLib = converter.getDOM(getStringFromDocument(skinAndLibraryDoc));
|
---|
[4258] | 711 |
|
---|
[24458] | 712 | if (output.equals("skinandlibdoc"))
|
---|
| 713 | {
|
---|
| 714 | return skinAndLib;
|
---|
| 715 | }
|
---|
| 716 | else
|
---|
| 717 | {
|
---|
| 718 | // Send XML and skinandlibdoc down the line together
|
---|
| 719 | Document finalDoc = converter.newDOM();
|
---|
| 720 | Node finalDocSkin = finalDoc.importNode(skinAndLibraryDoc.getDocumentElement(), true);
|
---|
| 721 | Node finalDocXML = finalDoc.importNode(theXML.getDocumentElement(), true);
|
---|
| 722 | Element root = finalDoc.createElement("skinlibPlusXML");
|
---|
| 723 | root.appendChild(finalDocSkin);
|
---|
| 724 | root.appendChild(finalDocXML);
|
---|
| 725 | finalDoc.appendChild(root);
|
---|
| 726 | return (Node) finalDoc.getDocumentElement();
|
---|
| 727 | }
|
---|
| 728 | }
|
---|
| 729 | if (output.equals("oldskindoc"))
|
---|
| 730 | {
|
---|
| 731 | return converter.getDOM(getStringFromDocument(oldStyle_doc));
|
---|
| 732 | }
|
---|
| 733 |
|
---|
| 734 | // Try to get the system and public ID from the current skin xsl document
|
---|
| 735 | // otherwise keep the default values.
|
---|
| 736 | Element root = skinAndLibraryDoc.getDocumentElement();
|
---|
| 737 | NodeList nodes = root.getElementsByTagName("xsl:output");
|
---|
| 738 | // If there is at least one "xsl:output" command in the final xsl then...
|
---|
| 739 | if (nodes.getLength() != 0)
|
---|
| 740 | {
|
---|
| 741 | // There should be only one element called xsl:output,
|
---|
| 742 | // but if this is not the case get the last one
|
---|
| 743 | Element xsl_output = (Element) nodes.item(nodes.getLength() - 1);
|
---|
| 744 | if (xsl_output != null)
|
---|
| 745 | {
|
---|
| 746 | // Qualified name will always be html even for xhtml pages
|
---|
| 747 | //String attrValue = xsl_output.getAttribute("method");
|
---|
| 748 | //qualifiedName = attrValue.equals("") ? qualifiedName : attrValue;
|
---|
| 749 |
|
---|
| 750 | String attrValue = xsl_output.getAttribute("doctype-system");
|
---|
| 751 | systemID = attrValue.equals("") ? systemID : attrValue;
|
---|
| 752 |
|
---|
| 753 | attrValue = xsl_output.getAttribute("doctype-public");
|
---|
| 754 | publicID = attrValue.equals("") ? publicID : attrValue;
|
---|
| 755 | }
|
---|
| 756 | }
|
---|
| 757 |
|
---|
| 758 | //System.out.println(converter.getPrettyString(docWithDoctype));
|
---|
| 759 | //System.out.println("Doctype vals: " + qualifiedName + " " + publicID + " " + systemID) ;
|
---|
| 760 |
|
---|
| 761 | docWithDoctype = converter.newDOM(qualifiedName, publicID, systemID);
|
---|
| 762 |
|
---|
| 763 | //System.out.println("Generate final HTML from current skin") ;
|
---|
| 764 | //Transformation of the XML message from the receptionist to HTML with doctype
|
---|
| 765 |
|
---|
| 766 | return this.transformer.transform(skinAndLibraryDoc, doc, config_params, docWithDoctype); // The default
|
---|
| 767 |
|
---|
| 768 | // The line below will do the transformation like we use to do before having Skin++ implemented,
|
---|
| 769 | // it will not contain any GS-Lib statements expanded, and the result will not contain any doctype.
|
---|
| 770 |
|
---|
| 771 | //return (Element)this.transformer.transform(style_doc, doc, config_params);
|
---|
| 772 | //return null; // For now - change later
|
---|
| 773 | }
|
---|
| 774 |
|
---|
| 775 | // method to convert Document to a proper XML string for debug purposes only
|
---|
| 776 | protected String getStringFromDocument(Document doc)
|
---|
| 777 | {
|
---|
| 778 | String content = "";
|
---|
| 779 | try
|
---|
| 780 | {
|
---|
| 781 | DOMSource domSource = new DOMSource(doc);
|
---|
| 782 | StringWriter writer = new StringWriter();
|
---|
| 783 | StreamResult result = new StreamResult(writer);
|
---|
| 784 | TransformerFactory tf = TransformerFactory.newInstance();
|
---|
| 785 | Transformer transformer = tf.newTransformer();
|
---|
| 786 | transformer.transform(domSource, result);
|
---|
| 787 | content = writer.toString();
|
---|
| 788 | System.out.println("Change the & to &Amp; for proper debug dispay");
|
---|
| 789 | content = StringUtils.replace(content, "&", "&");
|
---|
| 790 | writer.flush();
|
---|
| 791 | }
|
---|
| 792 | catch (TransformerException ex)
|
---|
| 793 | {
|
---|
| 794 | ex.printStackTrace();
|
---|
| 795 | return null;
|
---|
| 796 | }
|
---|
| 797 | return content;
|
---|
| 798 | }
|
---|
| 799 |
|
---|
| 800 | protected Document getPreprocessDoc() throws Exception
|
---|
| 801 | {
|
---|
| 802 |
|
---|
| 803 | File xslt_file = new File(preprocess_xsl_filename);
|
---|
| 804 |
|
---|
| 805 | FileReader reader = new FileReader(xslt_file);
|
---|
| 806 | InputSource xml_source = new InputSource(reader);
|
---|
| 807 | this.parser.parse(xml_source);
|
---|
| 808 | Document doc = this.parser.getDocument();
|
---|
| 809 |
|
---|
| 810 | return doc;
|
---|
| 811 | }
|
---|
| 812 |
|
---|
| 813 | protected Document getLibraryDoc() throws Exception
|
---|
| 814 | {
|
---|
| 815 | Document doc = null;
|
---|
| 816 | File xslt_file = new File(this.getLibraryXSLFilename());
|
---|
| 817 |
|
---|
| 818 | FileReader reader = new FileReader(xslt_file);
|
---|
| 819 | InputSource xml_source = new InputSource(reader);
|
---|
| 820 | this.parser.parse(xml_source);
|
---|
| 821 |
|
---|
| 822 | doc = this.parser.getDocument();
|
---|
| 823 | return doc;
|
---|
| 824 | }
|
---|
| 825 |
|
---|
| 826 | protected String getXSLTFileName(String action, String subaction, String collection)
|
---|
| 827 | {
|
---|
| 828 |
|
---|
| 829 | String name = null;
|
---|
| 830 | if (!subaction.equals(""))
|
---|
| 831 | {
|
---|
| 832 | String key = action + ":" + subaction;
|
---|
| 833 | name = (String) this.xslt_map.get(key);
|
---|
| 834 | }
|
---|
| 835 | // try the action by itself
|
---|
| 836 | if (name == null)
|
---|
| 837 | {
|
---|
| 838 | name = (String) this.xslt_map.get(action);
|
---|
| 839 | }
|
---|
| 840 | // now find the absolute path
|
---|
| 841 | String stylesheet = GSFile.stylesheetFile(GlobalProperties.getGSDL3Home(), (String) this.config_params.get(GSConstants.SITE_NAME), collection, (String) this.config_params.get(GSConstants.INTERFACE_NAME), base_interfaces, name);
|
---|
| 842 | if (stylesheet == null)
|
---|
| 843 | {
|
---|
| 844 | logger.info(" Can't find stylesheet for " + name);
|
---|
| 845 | }
|
---|
| 846 | logger.debug("Stylesheet: " + stylesheet);
|
---|
| 847 | return stylesheet;
|
---|
| 848 | }
|
---|
| 849 |
|
---|
| 850 | // returns the library.xsl path of the library file that is applicable for the current interface
|
---|
| 851 | protected String getLibraryXSLFilename()
|
---|
| 852 | {
|
---|
| 853 | return GSFile.xmlTransformDir(GSFile.interfaceHome(GlobalProperties.getGSDL3Home(), (String) this.config_params.get(GSConstants.INTERFACE_NAME))) + File.separatorChar + "library.xsl";
|
---|
| 854 | }
|
---|
| 855 |
|
---|
| 856 | // Call this when a FileNotFoundException could be thrown when loading an xsl (xml) file.
|
---|
| 857 | // Returns an error xhtml page indicating which xsl (or other xml) file is missing.
|
---|
| 858 | protected Document fileNotFoundErrorPage(String filenameMessage)
|
---|
| 859 | {
|
---|
| 860 | String errorMessage = "ERROR missing file: " + filenameMessage;
|
---|
| 861 | Element errPage = XMLTransformer.constructErrorXHTMLPage(errorMessage);
|
---|
| 862 | logger.error(errorMessage);
|
---|
| 863 | return errPage.getOwnerDocument();
|
---|
| 864 | }
|
---|
[4258] | 865 | }
|
---|