X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=source%2Fmircoders%2Flocalizer%2Fbasic%2FMirBasicPostingSessionHandler.java;h=786fd6268b1f32c6b68fffec067427e9a6fa3e0a;hb=04bf29aa1f1abf43e96d0272b2a286f0c1f9fea8;hp=245e6b3a2afa9f0df635d78046afb45cac7cde4b;hpb=87809334c4eaf3955a1cfe609425ad2f07a26351;p=mir.git

diff --git a/source/mircoders/localizer/basic/MirBasicPostingSessionHandler.java b/source/mircoders/localizer/basic/MirBasicPostingSessionHandler.java
index 245e6b3a..786fd626 100755
--- a/source/mircoders/localizer/basic/MirBasicPostingSessionHandler.java
+++ b/source/mircoders/localizer/basic/MirBasicPostingSessionHandler.java
@@ -1,37 +1,34 @@
-/*
- * Copyright (C) 2001, 2002  The Mir-coders group
- *
- * This file is part of Mir.
- *
- * Mir is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * Mir is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Mir; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
- * In addition, as a special exception, The Mir-coders gives permission to link
- * the code of this program with the com.oreilly.servlet library, any library
- * licensed under the Apache Software License, The Sun (tm) Java Advanced
- * Imaging library (JAI), The Sun JIMI library (or with modified versions of
- * the above that use the same license as the above), and distribute linked
- * combinations including the two.  You must obey the GNU General Public
- * License in all respects for all of the code used other than the above
- * mentioned libraries.  If you modify this file, you may extend this exception
- * to your version of the file, but you are not obligated to do so.  If you do
- * not wish to do so, delete this exception statement from your version.
- */
-
-package mircoders.localizer.basic;
-
-import java.util.Arrays;
+/*
+ * Copyright (C) 2001, 2002 The Mir-coders group
+ *
+ * This file is part of Mir.
+ *
+ * Mir is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Mir is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Mir; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * In addition, as a special exception, The Mir-coders gives permission to link
+ * the code of this program with  any library licensed under the Apache Software License,
+ * The Sun (tm) Java Advanced Imaging library (JAI), The Sun JIMI library
+ * (or with modified versions of the above that use the same license as the above),
+ * and distribute linked combinations including the two.  You must obey the
+ * GNU General Public License in all respects for all of the code used other than
+ * the above mentioned libraries.  If you modify this file, you may extend this
+ * exception to your version of the file, but you are not obligated to do so.
+ * If you do not wish to do so, delete this exception statement from your version.
+ */
+package mircoders.localizer.basic;
+
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
@@ -40,7 +37,6 @@ import java.util.Random;
 import java.util.Vector;
 
 import mir.config.MirPropertiesConfiguration;
-import mir.entity.Entity;
 import mir.log.LoggerWrapper;
 import mir.session.Request;
 import mir.session.Response;
@@ -49,324 +45,269 @@ import mir.session.SessionExc;
 import mir.session.SessionFailure;
 import mir.session.SessionHandler;
 import mir.session.UploadedFile;
+import mir.session.ValidationError;
 import mir.storage.StorageObject;
 import mir.util.ExceptionFunctions;
-import mircoders.entity.EntityComment;
 import mircoders.global.MirGlobal;
-import mircoders.media.MediaUploadProcessor;
-import mircoders.module.ModuleComment;
-import mircoders.storage.DatabaseComment;
-import mircoders.storage.DatabaseCommentToMedia;
-import mircoders.storage.DatabaseContent;
-
-/**
- *
- * <p>Title: Experimental session handler for comment postings </p>
- * <p>Description: </p>
- * <p>Copyright: Copyright (c) 2003</p>
- * <p>Company: </p>
- * @author not attributable
- * @version 1.0
- */
-
-public class MirBasicPostingSessionHandler implements SessionHandler {
-  protected LoggerWrapper logger;
-  protected MirPropertiesConfiguration configuration;
-  protected ModuleComment commentModule;
-  protected DatabaseCommentToMedia commentToMedia = DatabaseCommentToMedia.getInstance();
-
-  public MirBasicPostingSessionHandler() {
-    logger = new LoggerWrapper("Localizer.OpenPosting");
-    try {
-      configuration = MirPropertiesConfiguration.instance();
-    }
-    catch (Throwable t) {
-      logger.fatal("Cannot load configuration: " + t.toString());
-
-      throw new RuntimeException("Cannot load configuration: " + t.toString());
-    }
-    commentModule= new ModuleComment(DatabaseComment.getInstance());
-  }
-
-  public void processRequest(Request aRequest, Session aSession, Response aResponse) throws SessionExc, SessionFailure {
-    if (aSession.getAttribute("initialRequest")==null) {
-      initialRequest(aRequest, aSession, aResponse);
-      aSession.setAttribute("initialRequest", "no");
-    }
-    else {
-      subsequentRequest(aRequest, aSession, aResponse);
-    }
-  };
-
-  protected Map getIntersectingValues(Request aRequest, StorageObject aStorage) throws SessionExc, SessionFailure {
-    Map result = new HashMap();
-
-    Iterator i = aStorage.getFields().iterator();
-
-    while (i.hasNext()) {
-      String fieldName = (String) i.next();
-      Object value = aRequest.getParameter(fieldName);
-      if (value != null)
-        result.put(fieldName, value);
-    }
-
-    return result;
-  }
-
-
-  protected String generateOnetimePassword() {
-    Random r = new Random();
-    int random = r.nextInt();
-
-    long l = System.currentTimeMillis();
-
-    l = (l*l*l*l)/random;
-    if (l<0)
-      l = l * -1;
-
-    String returnString = ""+l;
-
-    return returnString.substring(5);
-  }
-
-  protected void initializeResponseData(Request aRequest, Session aSession, Response aResponse) throws SessionExc, SessionFailure {
-    if (MirGlobal.abuse().getOpenPostingPassword()) {
-      String password = (String) aSession.getAttribute("password");
-      if (password==null) {
-        password = generateOnetimePassword();
-        aSession.setAttribute("password", password);
-      }
-      aResponse.setResponseValue("password", password);
-    }
-    else {
-      aResponse.setResponseValue("password", null);
-      aSession.deleteAttribute("password");
-    }
-
-    aResponse.setResponseValue("errors", null);
-  };
-
-  protected void initialRequest(Request aRequest, Session aSession, Response aResponse) throws SessionExc, SessionFailure{
-    Iterator i = DatabaseComment.getInstance().getFields().iterator();
-    while (i.hasNext()) {
-      aResponse.setResponseValue( (String) i.next(), null);
-    }
-
-    String articleId = aRequest.getParameter("to_media");
-
-    if (articleId == null)
-      throw new SessionExc("MirBasicPostingSessionHandler.initialRequest: article id not set!");
-
-    aSession.setAttribute("to_media", articleId);
-
-    initializeResponseData(aRequest, aSession, aResponse);
-
-    try {
-      aResponse.setResponseGenerator(configuration.getString("Localizer.OpenSession.comment.EditTemplate"));
-    }
-    catch (Throwable e) {
-      throw new SessionFailure("Can't get configuration: " + e.getMessage(), e);
-    }
-
-  }
-
-  protected boolean testFieldEntered(Request aRequest, String aFieldName, String anErrorMessageResource, List aValidationResults) {
-    Object value = aRequest.getParameter(aFieldName);
-    if (value==null || !(value instanceof String) || ((String) value).trim().length()==0) {
-      logger.debug("  missing field " + aFieldName + " value = " + value);
-      aValidationResults.add(new ValidationError(aFieldName, anErrorMessageResource));
-      return false;
-    }
-    else
-      return true;
-  }
-
-  protected boolean testFieldIsNumeric(Request aRequest, String aFieldName, String anErrorMessageResource, List aValidationResults) {
-    Object value = aRequest.getParameter(aFieldName);
-    if (value!=null) {
-      try {
-        Integer.parseInt((String) value);
-        return true;
-      }
-      catch (Throwable t) {
-        logger.debug("  field not numeric: " + aFieldName + " value = " + value);
-        aValidationResults.add(new ValidationError(aFieldName, anErrorMessageResource));
-        return false;
-      }
-    }
-    return true;
-  }
-
-  public void validate(Request aRequest, Session aSession, Response aResponse) throws SessionExc, SessionFailure {
-
-  }
-
-  public List validate(Request aRequest, Session aSession) throws SessionExc, SessionFailure {
-    List result = new Vector();
-
-    testFieldEntered(aRequest, "title", "validationerror.missing", result);
-    testFieldEntered(aRequest, "description", "validationerror.missing", result);
-    testFieldEntered(aRequest, "creator", "validationerror.missing", result);
-
-    return result;
-  }
-
-  public void subsequentRequest(Request aRequest, Session aSession, Response aResponse) throws SessionExc, SessionFailure {
-    try {
-      Map commentFields = new HashMap();
-
-      Iterator i = DatabaseContent.getInstance().getFields().iterator();
-      while (i.hasNext()) {
-        String field = (String) i.next();
-        aResponse.setResponseValue(field, aRequest.getParameter(field));
-        if (aRequest.getParameter(field)!=null) {
-          commentFields.put(field, aRequest.getParameter(field));
-        }
-      }
-
-      initializeResponseData(aRequest, aSession, aResponse);
-
-      List validationErrors = validate(aRequest, aSession);
-
-      if (validationErrors != null && validationErrors.size()>0) {
-        returnValidationErrors(aRequest, aSession, aResponse, validationErrors);
-      }
-      else {
-//        finish(aRequest, aSession, aResponse);
-
-        EntityComment comment = (EntityComment) commentModule.createNew ();
-//        comment.setValues(getIntersectingValues(aRequest, ));
-
-        finishComment(aRequest, aSession, comment);
-
-        String id = comment.insert();
-        if(id==null){
-          afterDuplicateCommentPosting(aRequest, aSession, aResponse, comment);
-          logger.info("Dupe comment rejected");
-          aSession.terminate();
-        }
-        else {
-          i = aRequest.getUploadedFiles().iterator();
-          while (i.hasNext()) {
-            UploadedFile file = (UploadedFile) i.next();
-            processMediaFile(aRequest, aSession, comment, file);
-          }
-
-          afterCommentPosting(aRequest, aSession, aResponse, comment);
-          MirGlobal.abuse().checkComment(comment, aRequest, null);
-          MirGlobal.localizer().openPostings().afterCommentPosting(comment);
-          logger.info("Comment posted");
-          aSession.terminate();
-        }
-      }
-    }
-    catch (Throwable t) {
-      ExceptionFunctions.traceCauseException(t).printStackTrace();
-
-      throw new SessionFailure("MirBasicPostingSessionHandler.subsequentRequest: " + t.getMessage(), t);
-    }
-  }
-
-  public void initializeCommentPosting(Request aRequest, Session aSession, Response aResponse) throws SessionFailure, SessionExc {
-    String articleId = aRequest.getParameter("to_media");
-    if (articleId==null)
-      articleId = aRequest.getParameter("aid");
-
-    if (articleId==null)
-      throw new SessionExc("initializeCommentPosting: article id not set!");
-
-    aSession.setAttribute("to_media", articleId);
-    processCommentPosting(aRequest, aSession, aResponse);
-  };
-
-  public void returnValidationErrors(Request aRequest, Session aSession, Response aResponse, List aValidationErrors) throws SessionFailure, SessionExc {
-    aResponse.setResponseValue("errors", aValidationErrors);
-    aResponse.setResponseGenerator(configuration.getString("Localizer.OpenSession.comment.EditTemplate"));
-  };
-
-  public void processCommentPosting(Request aRequest, Session aSession, Response aResponse) throws SessionExc, SessionFailure {
-    if (MirGlobal.abuse().getOpenPostingPassword()) {
-      String password = generateOnetimePassword();
-      aSession.setAttribute("password", password);
-      aResponse.setResponseValue("password", password);
-      aResponse.setResponseValue("passwd", password);
-    }
-    else {
-      aResponse.setResponseValue("password", null);
-    }
-
-    aResponse.setResponseGenerator(configuration.getString("Localizer.OpenSession.comment.EditTemplate"));
-  };
-
-  public void processMediaFile(Request aRequest, Session aSession, EntityComment aComment, UploadedFile aFile) throws SessionExc, SessionFailure {
-    try {
-      Entity mediaItem = MediaUploadProcessor.processMediaUpload(aFile, new HashMap());
-      finishMedia(aRequest, aSession, aFile, mediaItem);
-      mediaItem.update();
-      commentToMedia.addMedia(aComment.getId(), mediaItem.getId());
-    }
-    catch (Throwable t) {
-      throw new SessionFailure(t);
-    }
-  }
-
-  public void finishMedia(Request aRequest, Session aSession, UploadedFile aFile, Entity aMedia) throws SessionExc, SessionFailure {
-  }
-
-  public void finishComment(Request aRequest, Session aSession, EntityComment aComment) throws SessionExc, SessionFailure {
-    if (aSession.getAttribute("to_media") == null)
-      throw new SessionExc("missing to_media");
-
-    aComment.setValueForProperty("is_published", "1");
-    aComment.setValueForProperty("to_comment_status", "1");
-    aComment.setValueForProperty("is_html","0");
-    aComment.setValueForProperty("to_media", (String) aSession.getAttribute("to_media"));
-  };
-
-  public void addMedia(Request aRequest, Session aSession, EntityComment aComment)  throws SessionExc, SessionFailure {
-  }
-
-  public void afterCommentPosting(Request aRequest, Session aSession, Response aResponse, EntityComment aComment) {
-    DatabaseContent.getInstance().setUnproduced("id=" + aComment.getValue("to_media"));
-    aResponse.setResponseGenerator(configuration.getString("Localizer.OpenSession.comment.DoneTemplate"));
-  };
-
-  public void afterDuplicateCommentPosting(Request aRequest, Session aSession, Response aResponse, EntityComment aComment) {
-    aResponse.setResponseGenerator(configuration.getString("Localizer.OpenSession.comment.DupeTemplate"));
-  };
-
-  public class ValidationError {
-    private String field;
-    private String message;
-    private List parameters;
-
-    public ValidationError(String aField, String aMessage) {
-      this (aField, aMessage, new String[] {});
-    }
-
-    public ValidationError(String aField, String aMessage, Object aParameter) {
-      this (aField, aMessage, new Object[] {aParameter});
-    }
-
-    public ValidationError(String aField, String aMessage, Object[] aParameters) {
-      field = aField;
-      message = aMessage;
-      parameters = Arrays.asList(aParameters);
-    }
-
-    public String getMessage() {
-      return message;
-    }
-
-    public String getField() {
-      return field;
-    }
-
-    public List getParameters() {
-      return parameters;
-    }
-  }
-
-
-
-}
+import mircoders.module.ModuleMediaType;
+
+/**
+ *
+ * <p>Title: Experimental session handler for comment postings </p>
+ * <p>Description: </p>
+ * <p>Copyright: Copyright (c) 2003</p>
+ * <p>Company: </p>
+ * @author not attributable
+ * @version 1.0
+ */
+
+public abstract class MirBasicPostingSessionHandler implements SessionHandler {
+  protected LoggerWrapper logger;
+  protected MirPropertiesConfiguration configuration;
+
+  private String normalResponseGenerator;
+  private String dupeResponseGenerator;
+  private String unsupportedMediaTypeResponseGenerator;
+  private String finalResponseGenerator;
+
+
+  public MirBasicPostingSessionHandler() {
+    logger = new LoggerWrapper("Localizer.OpenPosting");
+    try {
+      configuration = MirPropertiesConfiguration.instance();
+    }
+    catch (Throwable t) {
+      logger.fatal("Cannot load configuration: " + t.toString());
+
+      throw new RuntimeException("Cannot load configuration: " + t.toString());
+    }
+  }
+
+  protected void setNormalResponseGenerator(String aGenerator) {
+    normalResponseGenerator = aGenerator;
+  }
+
+  protected void setResponseGenerators(String aNormalResponseGenerator, String aDupeResponseGenerator,
+        String anUnsupportedMediaTypeResponseGenerator, String aFinalResponseGenerator) {
+    setNormalResponseGenerator(aNormalResponseGenerator);
+    dupeResponseGenerator = aDupeResponseGenerator;
+    unsupportedMediaTypeResponseGenerator = anUnsupportedMediaTypeResponseGenerator;
+    finalResponseGenerator = aFinalResponseGenerator;
+  }
+
+  public void processRequest(Request aRequest, Session aSession, Response aResponse) throws SessionExc, SessionFailure {
+    if (MirGlobal.abuse().getOpenPostingDisabled()) {
+      makeOpenPostingDisabledResponse(aRequest, aSession, aResponse);
+      aSession.terminate();
+    }
+    else {
+      if (aSession.getAttribute("initialRequest") == null) {
+        initialRequest(aRequest, aSession, aResponse);
+        aSession.setAttribute("initialRequest", "no");
+      }
+      else {
+        subsequentRequest(aRequest, aSession, aResponse);
+      }
+    }
+  };
+
+  protected void initialRequest(Request aRequest, Session aSession, Response aResponse) throws SessionExc, SessionFailure {
+    initializeSession(aRequest, aSession);
+    initializeResponseData(aRequest, aSession, aResponse);
+    makeInitialResponse(aRequest, aSession, aResponse);
+  }
+
+  public void subsequentRequest(Request aRequest, Session aSession, Response aResponse) throws SessionExc, SessionFailure {
+    try {
+      try {
+        List validationErrors = new Vector();
+
+        if (!shouldProcessRequest(aRequest, aSession, validationErrors)) {
+          initializeResponseData(aRequest, aSession, aResponse);
+          makeResponse(aRequest, aSession, aResponse, validationErrors);
+        }
+        else {
+          preProcessRequest(aRequest, aSession);
+          Iterator i = aRequest.getUploadedFiles().iterator();
+          while (i.hasNext()) {
+            processUploadedFile(aRequest, aSession, (UploadedFile) i.next());
+          }
+          postProcessRequest(aRequest, aSession);
+          initializeResponseData(aRequest, aSession, aResponse);
+          makeFinalResponse(aRequest, aSession, aResponse);
+          aSession.terminate();
+        }
+      }
+      catch (Throwable t) {
+        initializeResponseData(aRequest, aSession, aResponse);
+        makeErrorResponse(aRequest, aSession, aResponse, t);
+        aSession.terminate();
+      }
+    }
+    catch (Throwable t) {
+      aSession.terminate();
+
+      throw new SessionFailure(t);
+    }
+  }
+
+  protected void initializeSession(Request aRequest, Session aSession) throws SessionExc, SessionFailure {
+    if (MirGlobal.abuse().getOpenPostingPassword()) {
+      String password = (String) aSession.getAttribute("password");
+      if (password==null) {
+        password = generateOnetimePassword();
+        aSession.setAttribute("password", password);
+      }
+    }
+    else {
+      aSession.deleteAttribute("password");
+    }
+
+    logger.debug("referrer = " + aRequest.getHeader("Referer"));
+
+    aSession.setAttribute("referer", aRequest.getHeader("Referer"));
+  }
+
+  protected void initializeResponseData(Request aRequest, Session aSession, Response aResponse) throws SessionExc, SessionFailure {
+    int nrMediaItems = configuration.getInt("ServletModule.OpenIndy.DefaultMediaUploadItems", 5);
+
+    if (aSession.getAttribute("nrmediaitems")!=null) {
+      nrMediaItems = ((Integer) aSession.getAttribute("nrmediaitems")).intValue();
+    }
+    try {
+      nrMediaItems = Math.min(configuration.getInt("ServletModule.OpenIndy.MaxMediaUploadItems"), Integer.parseInt(aRequest.getParameter("nrmediaitems")));
+    }
+    catch (Throwable t) {
+    }
+    aSession.setAttribute("nrmediaitems", new Integer(nrMediaItems));
+
+    List mediaItems = new Vector();
+    int i=0;
+
+    while (i<nrMediaItems) {
+      i++;
+      mediaItems.add(new Integer(i));
+    }
+
+    aResponse.setResponseValue("nrmediaitems", new Integer(nrMediaItems));
+    aResponse.setResponseValue("mediaitems", mediaItems);
+    aResponse.setResponseValue("password", aSession.getAttribute("password"));
+    aResponse.setResponseValue("referer", aSession.getAttribute("referer"));
+    aResponse.setResponseValue("errors", null);
+  }
+
+  protected void makeInitialResponse(Request aRequest, Session aSession, Response aResponse) throws SessionExc, SessionFailure {
+    aResponse.setResponseGenerator(normalResponseGenerator);
+  };
+
+  protected void makeResponse(Request aRequest, Session aSession, Response aResponse, List anErrors) throws SessionExc, SessionFailure {
+    aResponse.setResponseValue("errors", anErrors);
+    aResponse.setResponseGenerator(normalResponseGenerator);
+  };
+
+  protected void makeFinalResponse(Request aRequest, Session aSession, Response aResponse) throws SessionExc, SessionFailure {
+    aResponse.setResponseGenerator(finalResponseGenerator);
+  };
+
+  protected void makeErrorResponse(Request aRequest, Session aSession, Response aResponse, Throwable anError) throws SessionExc, SessionFailure {
+    anError.printStackTrace();
+    Throwable rootCause = ExceptionFunctions.traceCauseException(anError);
+
+    if (rootCause instanceof DuplicatePostingExc)
+      aResponse.setResponseGenerator(dupeResponseGenerator);
+    if (rootCause instanceof ModuleMediaType.UnsupportedMimeTypeExc) {
+      aResponse.setResponseValue("mimetype", ((ModuleMediaType.UnsupportedMimeTypeExc) rootCause).getMimeType());
+      aResponse.setResponseGenerator(unsupportedMediaTypeResponseGenerator);
+    }
+    else {
+      aResponse.setResponseValue("errorstring", anError.getMessage());
+      aResponse.setResponseGenerator(configuration.getString("Localizer.OpenSession.ErrorTemplate"));
+    }
+  };
+
+  protected void makeOpenPostingDisabledResponse(Request aRequest, Session aSession, Response aResponse) {
+    aResponse.setResponseGenerator(configuration.getString("ServletModule.OpenIndy.PostingDisabledTemplate"));
+  }
+
+  protected void preProcessRequest(Request aRequest, Session aSession) throws SessionExc, SessionFailure {
+  };
+  public void processUploadedFile(Request aRequest, Session aSession, UploadedFile aFile) throws SessionExc, SessionFailure {
+  };
+  protected void postProcessRequest(Request aRequest, Session aSession) throws SessionExc, SessionFailure {
+  };
+
+  protected boolean shouldProcessRequest(Request aRequest, Session aSession, List aValidationErrors) throws SessionExc, SessionFailure {
+    if (aRequest.getParameter("post")==null)
+      return false;
+    else {
+      validate(aValidationErrors, aRequest, aSession);
+      return (aValidationErrors == null || aValidationErrors.size() == 0);
+    }
+  }
+
+  protected void validate(List aResults, Request aRequest, Session aSession) throws SessionExc, SessionFailure {
+    String password = (String) aSession.getAttribute("password");
+
+    if (password!=null) {
+      String submittedPassword= aRequest.getParameter("password").trim();
+
+      if (!password.equals(submittedPassword)) {
+        aResults.add(new ValidationError("password", "passwordmismatch"));
+      }
+    }
+  }
+
+
+  /**
+   * Method to generate a one-time password
+   *
+   * @return a password, to be used once
+   */
+
+  protected String generateOnetimePassword() {
+    Random r = new Random();
+    int random = r.nextInt();
+
+    long l = System.currentTimeMillis();
+
+    l = (l*l*l*l)/random;
+    if (l<0)
+      l = l * -1;
+
+    String returnString = ""+l;
+
+    return returnString.substring(5);
+  }
+
+
+  /**
+   *
+   * @param aRequest
+   * @param aStorage
+   * @return
+   * @throws SessionExc
+   * @throws SessionFailure
+   */
+
+  protected static final Map getIntersectingValues(Request aRequest, StorageObject aStorage) throws SessionExc, SessionFailure {
+    Map result = new HashMap();
+
+    Iterator i = aStorage.getFields().iterator();
+
+    while (i.hasNext()) {
+      String fieldName = (String) i.next();
+      Object value = aRequest.getParameter(fieldName);
+      if (value != null)
+        result.put(fieldName, value);
+    }
+
+    return result;
+  }
+
+  protected static class DuplicatePostingExc extends SessionExc {
+    public DuplicatePostingExc(String aMessage) {
+      super(aMessage);
+    }
+  }
+
+}