*/
public class Server {
- private static class Style {
+ private static class Style implements Serializable {
public String fileName;
public long lastModified;
public Templates stylesheet;
public static final String VERSION;
public static final String DATE;
public static final String TIME;
+ public static final String SERIALIZATION_DIR;
static {
Properties props = new Properties();
VERSION = props.getProperty("VERSION");
DATE = props.getProperty("DATE");
TIME = props.getProperty("TIME");
+ SERIALIZATION_DIR = props.getProperty("SERIALIZATION_DIR");
}
+ Server() {
+ if(!SERIALIZATION_DIR.equals("")) {
+ log("Looking for serialized stylesheets");
+ File [] serialized = new File(SERIALIZATION_DIR).listFiles();
+ if (serialized == null) {
+ log("Serialized stylesheets directory \"" + SERIALIZATION_DIR +
+ "\" not found");
+ } else {
+ for (int i = 0; i < serialized.length ; i++) {
+ File filename = serialized[i];
+ String key = filename.getName();
+ log("Found serialized stylesheet " + key);
+ log("Reloading serialized stylesheet \"" + filename + "\"... ");
+ FileInputStream istream;
+ try {
+ istream = new FileInputStream(filename);
+ ObjectInputStream p = new ObjectInputStream(istream);
+ Style style = (Style)p.readObject();
+ istream.close();
+ hashMap.put(key, style);
+ } catch (Exception e) {log(e.toString());};
+ }
+ log("Serialized stylesheets loaded!");
+ }
+ } else
+ log("Stylesheet serialization is off. Set the property SERIALIZATION_DIR to a non-empty value to turn it on.");
+
+ }
+
private final HashMap hashMap = new HashMap();
private static int logCounter = 0;
- private final Templates compileStylesheet(String xsl_file) throws TransformerConfigurationException, SAXException, IOException {
+ private final String compileStylesheet(Style style, String key) throws TransformerConfigurationException, SAXException, IOException {
StreamSource streamsource =
- new StreamSource(new URL(xsl_file).openStream());
- streamsource.setSystemId(xsl_file);
- return ((SAXTransformerFactory)TransformerFactory.newInstance())
- .newTemplates(streamsource);
+ new StreamSource(new URL(style.fileName).openStream());
+ streamsource.setSystemId(style.fileName);
+ Templates templates =
+ ((SAXTransformerFactory)TransformerFactory.newInstance())
+ .newTemplates(streamsource);
+ style.stylesheet = templates;
+ File serializationFile = new File(SERIALIZATION_DIR,key);
+ String res = "";
+ if(!SERIALIZATION_DIR.equals("")) {
+ try {
+ FileOutputStream ostream =
+ new FileOutputStream(serializationFile);
+ ObjectOutputStream p = new ObjectOutputStream(ostream);
+ p.writeObject(style);
+ p.flush();
+ ostream.close();
+ res =
+ "Stylesheet serialized in \"" + serializationFile + "\"";
+ log(res);
+ } catch (FileNotFoundException e) {
+ res = "Warning: Stylesheet not " +
+ "serialized. Error opening " + "file \"" +
+ serializationFile + "\"";
+ log(res);
+ res = htmlOfWarning(res);
+ }
+ }
+ return res;
}
private String getContentType(Templates templates) {
System.err.println(SERVERNAME + "[" + logCounter++ + "]: " + msg);
}
- public void add(String filename, String key) throws TransformerConfigurationException, SAXException, IOException {
+ public String add(String filename, String key) throws TransformerConfigurationException, SAXException, IOException {
+ log("processing stylesheet \"" + filename + "\" using key " + key + "... ");
if (hashMap.containsKey(key)) {
- log("there is already a stylesheet with keyword \"" + key + "\" (aborted)");
- return;
+ Style style = (Style)hashMap.get(key);
+ if (style.fileName.equals(filename)) {
+ String msg =
+ "Warning: Stylesheet already loaded. Reloading...";
+ log(msg);
+ String msg2 = reload(key);
+ return htmlOfWarning(msg) +
+ (msg2.equals("") ? "" : "<br />" + msg2);
+ } else {
+ String res =
+ "Error: There is already a stylesheet with keyword \""+
+ key + "\" (aborted)";
+ log(res);
+ return htmlOfError(res);
+ }
}
Style style = new Style();
style.fileName = filename;
style.lastModified = new File(filename).lastModified();
- log("processing stylesheet \"" + filename + "\"... ");
- style.stylesheet = compileStylesheet(filename);
- log("done!");
+ String res = compileStylesheet(style,key);
+ log("done!");
hashMap.put(key, style);
+ return res;
}
- public void removeAll()
- {
- String key;
- Style style;
+ public ArrayList removeAll() throws TransformerConfigurationException, SAXException, IOException {
+ ArrayList res = new ArrayList();
+ String log = "";
Iterator i = hashMap.keySet().iterator();
while (i.hasNext()) {
- key = (String)i.next();
- style = (Style)hashMap.get(key);
- log("removing \"" + key + " (" + style.fileName + ")");
- }
- hashMap.clear();
+ String key = (String)i.next();
+ Style style = (Style)hashMap.get(key);
+ String msg =
+ "removing \"" + key + " (" + style.fileName + ")";
+ res.add(msg);
+ log(msg);
+ msg = partialRemove(key,false);
+ if(!msg.equals(""))
+ res.add(msg);
+ }
+ hashMap.clear();
+ return res;
}
- public void remove(String key) {
+ private String partialRemove(String key, boolean removeFromHashTable) {
+ String res = "";
Style style = (Style)hashMap.get(key);
if (style != null) {
log("removing \"" + key + " (" + style.fileName + ")");
- hashMap.remove(key);
+ if (removeFromHashTable)
+ hashMap.remove(key);
+ if(!SERIALIZATION_DIR.equals("")) {
+ File to_delete = new File(SERIALIZATION_DIR,key);
+ if (!to_delete.delete()) {
+ res = "Warning: Serialized stylesheet \"" +
+ to_delete + "\" to remove not found";
+ log(res);
+ res = htmlOfWarning(res);
+ }
+ }
} else {
- log("error, stylesheet \"" + key + "\" not loaded");
+ res = "Error: stylesheet \"" + key + "\" not loaded";
+ log(res);
+ res = htmlOfError(res);
}
+ return res;
+ }
+
+ public String remove(String key) {
+ return partialRemove(key,true);
}
public String getContentType(String key) {
if (style != null) {
return getContentType(style.stylesheet);
} else {
- log("error, stylesheet \"" + key + "\" not loaded");
+ log("Error, stylesheet \"" + key + "\" not loaded");
return null;
}
}
return applyStylesheet(style.stylesheet, keys[idx].params, applyRec(keys, idx - 1, saxOutput));
}
}
-//FileNotFoundException
+
public void apply(String inFile, OutputStream outputStream, Key[] keys, Properties userProperties)
throws IOException, TransformerConfigurationException, SAXException, Exception
{
if (keys.length > 0) {
Style style = (Style) hashMap.get(rkeys[0].name);
if (style == null) {
- log("error, stylesheet \"" + rkeys[0].name + "\" not loaded");
+ log("Error, stylesheet \"" + rkeys[0].name + "\" not loaded");
return;
}
outputProperties = style.stylesheet.getOutputProperties();
// }
}
- public void reloadAll() throws TransformerConfigurationException, SAXException, IOException {
+ public ArrayList reloadAll() throws TransformerConfigurationException, SAXException, IOException {
+ ArrayList res = new ArrayList();
Iterator i = hashMap.keySet().iterator();
- while (i.hasNext())
- reload((String)i.next());
+ while (i.hasNext()) {
+ String key = (String)i.next();
+ Style style = (Style)hashMap.get(key);
+ String msg =
+ "reloading \"" + key + " (" + style.fileName + ")";
+ res.add(msg);
+ log(msg);
+ msg = reload(key);
+ if(!msg.equals(""))
+ res.add(msg);
+ }
+ return res;
}
- public void reload(String key) throws TransformerConfigurationException, SAXException, IOException {
+ public String reload(String key) throws TransformerConfigurationException, SAXException, IOException {
+ String res = "";
Style style = (Style)hashMap.get(key);
- if (style != null) {
- log("reloading \"" + key + "\"... ");
- style.stylesheet = compileStylesheet(style.fileName);
- style.lastModified = new File(style.fileName).lastModified();
- log("done!");
+ if (style != null) {
+ log("reloading \"" + key + "\"... ");
+ style.lastModified = new File(style.fileName).lastModified();
+ res= compileStylesheet(style,key);
+ log("done!");
} else {
- log("error, stylesheet \"" + key + "\" not loaded");
+ res = "Error: stylesheet \"" + key + "\" not loaded";
+ log(res);
+ res = htmlOfError(res);
}
+ return res;
}
- public void updateAll() throws TransformerConfigurationException, SAXException, IOException {
- Iterator i = hashMap.keySet().iterator();
- while (i.hasNext())
- update((String)i.next());
- }
+ private String htmlOfWarning(String message)
+ {
+ return "<b style=\"color: maroon\">" + message+"</b>";
+ }
- public void update(String key) throws TransformerConfigurationException, SAXException, IOException {
- Style style = (Style)hashMap.get(key);
- if (style != null) {
- log("updating \"" + key + "\"... ");
- File styleFile = new File(style.fileName);
- if (styleFile.lastModified() > style.lastModified) {
- style.stylesheet = compileStylesheet(style.fileName);
- style.lastModified = styleFile.lastModified();
- log("done!");
- } else {
- log("\"" + key + "\" is up to date");
- }
- } else {
- log("error, stylesheet \"" + key + "\" not loaded");
- }
- }
+ private String htmlOfError(String message)
+ {
+ return "<b style=\"color: red\">" + message+"</b>";
+ }
}
import javax.xml.transform.*;
import org.xml.sax.*;
+// WARNING: next comment is obsolete!!!!!
/*
*
* usage:
-* http://aristotele/helm/servlet/uwobo/help
-* http://aristotele/helm/servlet/uwobo/add?xsluri=&key=
-* http://aristotele/helm/servlet/uwobo/remove[?key=]
-* http://aristotele/helm/servlet/uwobo/list
-* http://aristotele/helm/servlet/uwobo/reload[?key=]
-* http://aristotele/helm/servlet/uwobo/update[?key=]
-* http://aristotele/helm/servlet/uwobo/apply?xmluri=&keys=[¶m.=]*
+* http://hostname/helm/servlet/uwobo/help
+* http://hostname/helm/servlet/uwobo/add?bind=key,stylesheet[&bind=key,stylesheet]*
+* http://hostname/helm/servlet/uwobo/remove[?keys=key_1,...,key_n]
+* http://hostname/helm/servlet/uwobo/list
+* http://hostname/helm/servlet/uwobo/reload[?keys=key_1,...,key_n]
+* http://hostname/helm/servlet/uwobo/apply?xmluri=xmldata&keys=key_1,...,key_n[¶m.name=value]*[¶m.key.name=value]*[&prop.name=[value]]*
*
* example:
-* http://aristotele/helm/servlet/uwobo/add?xsluri=file:///D:/Archivio/Progetti/helm/resources/xsl/foo1.xsl&key=foo1
-* http://aristotele/helm/servlet/uwobo/add?xsluri=file:///D:/Archivio/Progetti/helm/resources/xsl/foo2.xsl&key=foo2
-* http://aristotele/helm/servlet/uwobo/apply?xmluri=file:///D:/Archivio/Progetti/helm/resources/xsl/foo.xml&key=foo1&key=foo2
+* http://aristotele/helm/servlet/uwobo/add?bind=foo1,file:///D:/Archivio/Progetti/helm/resources/xsl/foo1.xsl
+* http://aristotele/helm/servlet/uwobo/add?bind=foo2,file:///D:/Archivio/Progetti/helm/resources/xsl/foo2.xsl
+* http://aristotele/helm/servlet/uwobo/apply?xmluri=file:///D:/Archivio/Progetti/helm/resources/xsl/foo.xml&keys=foo1,foo2
*
* installation notes (Tomcat):
-* replace parser.jar and jaxp.jar from /lib with xerces.jar
+* replace parser.jar and jaxp.jar from /lib with xerces.jar and add xalan.jar
*
* add in conf/server.xml
* <Context path="/helm"
* add in uriworkermap.properties
* /helm/*=ajp12
*
-* bugs:
-* directory base stylesheet inclusi
*
* @author The HELM team
*/
public static final String[] usage = {
"http://<i>hostname</i>/helm/servlet/uwobo/help",
- "http://<i>hostname</i>/helm/servlet/uwobo/add?key=<i>key</i>,<i>stylesheet</i>[&key=<i>key</i>,<i>stylesheet</i>]*",
+ "http://<i>hostname</i>/helm/servlet/uwobo/add?bind=<i>key</i>,<i>stylesheet</i>[&bind=<i>key</i>,<i>stylesheet</i>]*",
"http://<i>hostname</i>/helm/servlet/uwobo/remove[?keys=<i>key_1,...,key_n</i>]",
"http://<i>hostname</i>/helm/servlet/uwobo/list",
"http://<i>hostname</i>/helm/servlet/uwobo/reload[?keys=<i>key_1,...,key_n</i>]",
- "http://<i>hostname</i>/helm/servlet/uwobo/update[?keys=<i>key_1,...,key_n</i>]",
"http://<i>hostname</i>/helm/servlet/uwobo/apply?xmluri=<i>xmldata</i>&keys=<i>key_1,...,key_n</i>[¶m.<i>name</i>=<i>value</i>]*[¶m.<i>key</i>.<i>name</i>=<i>value</i>]*[&prop.<i>name</i>=[<i>value</i>]]*"
};
public static final String help;
throws IOException
{
resp.setContentType("text/html");
- out.println("<html><body bgcolor=\"#ffffff\"><h1>Uwobo servlet</h1>");
+ out.println("<html><body bgcolor=\"#ffffff\"><h1>" + server.PACKAGE + " servlet</h1>");
}
private void html_close(ServletOutputStream out)
private String msg_out(String message)
{
- return message+"<br>";
+ return message+"<br />";
}
private String exc_out(String message, Exception e)
}
String local = e.getLocalizedMessage();
local = local.substring(local.lastIndexOf(':')+1);
- return "<b>"+message+": "+local+"</b><br>";
+ return "<b>"+message+": "+local+"</b><br />";
}
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
ServletOutputStream out = response.getOutputStream();
+ String log = "";
response.setHeader("Cache-Control", "no-cache");
response.setHeader("Pragma", "no-cache");
sendError(response, out, "unknown command", help); return;
}
if (cmd.equals("/add")) {
- final String[] xslkey = request.getParameterValues("key");
+ final String[] xslkey = request.getParameterValues("bind");
if (xslkey == null) {
sendError(response, out, "bad parameters", usage[1]); return;
}
html_open(response, out);
for (int i = 0; i < xslkey.length; i++) {
final String data[] = split2(xslkey[i], ",");
- out.println(msg_out("adding key "+data[0]+" ("+data[1]+")"));
+ out.println(msg_out("adding stylesheet "+data[0]+" ("+data[1]+")"));
try {
- server.add(data[1], data[0]);
+ log = server.add(data[1], data[0]);
+ if(!log.equals(""))
+ out.println(msg_out(log));
} catch (TransformerConfigurationException tce) {
out.println(exc_out("stylesheet error", tce));
} catch (Exception e) {
for (int i = 0; i < data.length; i++) {
if (data[i] == null) {
out.println(msg_out("removing all keys"));
- server.removeAll();
+ ArrayList res;
+ res = server.removeAll();
+ Iterator j = res.iterator();
+ while (j.hasNext())
+ out.println(msg_out((String)j.next()));
} else {
out.println(msg_out("removing key "+data[i]));
- server.remove(data[i]);
+ out.println(msg_out(server.remove(data[i])));
}
}
html_close(out); return;
try {
if (data[i] == null) {
out.println(msg_out("reloading all keys"));
- server.reloadAll();
+ ArrayList res;
+ res = server.reloadAll();
+ Iterator j = res.iterator();
+ while(j.hasNext())
+ out.println(msg_out((String)j.next()));
} else {
out.println(msg_out("reloading key "+data[i]));
- server.reload(data[i]);
- }
- } catch (TransformerConfigurationException tce) {
- out.println(exc_out("stylesheet error", tce));
- } catch (Exception e) {
- out.println(exc_out(null, e));
- }
- }
- html_close(out); return;
- }
- if (cmd.equals("/update")) {
- final String key = request.getParameter("keys");
- final String [] data = split(key, ",");
- html_open(response, out);
- for (int i = 0; i < data.length; i++) {
- try {
- if (data[i] == null) {
- out.println(msg_out("updating all keys"));
- server.updateAll();
- } else {
- out.println(msg_out("updating key "+data[i]));
- server.update(data[i]);
+ out.println(msg_out(server.reload(data[i])));
}
} catch (TransformerConfigurationException tce) {
out.println(exc_out("stylesheet error", tce));
}
if (cmd.equals("/help")) {
html_open(response, out);
- out.println("<h2>"+server.PACKAGE+" servlet - version "+server.VERSION+"</h1>");
+ out.println("<h2>Version "+server.VERSION+"</h1>");
out.println("<b>compiled "+server.DATE+" at "+server.TIME.substring(0,2)+":"+server.TIME.substring(2)+"</b>");
+ if(Server.SERIALIZATION_DIR.equals("")) {
+ out.println("<p><b>Stylesheet serialization is off.</b>");
+ out.println("(To turn it on, choose a non-empty value for the " +
+ "SERIALIZATION_DIR property.)</p>");
+ } else
+ out.println("<p><b>Serialized stylesheed are stored in "" +
+ Server.SERIALIZATION_DIR + "".</b></p>");
out.println("<p>usage:</p>"+help+"</body></html>");
html_close(out); return;
}
sendError(response, out, "unknown command", help); return;
} catch (Exception e) {
- sendError(response, out, exc_out(null, e),""); // FG: non dovrebbe servire mai
+ sendError(response, out, exc_out(null, e),"");
return;
}
}
projects / helm.git / commitdiff