WebSphere support

Assignment

https://source.sakaiproject.org/svn//assignment/branches/SAK-13408

The problem is due to the different Xerces XML packages that IBM's JRE and Sun's JRE come with. In Sun's JRE, the Xerces implementation accepts attributes set to null values and replaces them with empty strings when serializing their node. In IBM's JRE (which Websphere uses), the Xerces implementation throws an exception when it attempts to serialize a null attribute. The above code checks for null values and sets them to empty strings. This has been successfully tested on Websphere and Tomcat.

WS-23

Merged

Blog

https://source.sakaiproject.org/svn//blog/branches/SAK-13408

Part of problem is caused by the uk.ac.lancs.e_science.sakaiproject.api.blogger.post.xml.XMLToPost class in the blogger. It hardcodes a reference to "com.sun.org.apache.xerces.internal.parsers.SAXParser", which is the internal parser provided by Sun's JRE. This is not available in the IBM JRE. This hardcoded reference isn't needed, since it will automatically be selected by the JAXP implementation in the Sun JRE anyways. This will similarly happen on the IBM JRE as well, except with the corresponding SAXParser implementation in the IBM JRE. To fix this, simply removing it and letting JAXP select the SAXParser works for both JREs. In addition, When PostCreateView.jsp and PostEditView.jsp uses enctype="multipart/form-data", the UploadFilter class determines the request needs to be checked for an upload, and sends the request to the Apache Commons FileUpload library to be analyzed. The class org.apache.commons.fileupload.MultipartStream checks the request's input stream for any file uploads. This reading of the input stream, however, modifies the stream and subsequently causes problems for Websphere and JSF, preventing it from correctly navigating to the next page. The implemented fix creates a couple of inner classes, BufferedHttpServletRequestWrapper and BufferedServletInputStream, in UploadFilter.java to be used only if in Websphere, that essentially creates a BufferedInputStream for the InputStream, allowing the stream to be reset back to the beginning after the Apache Commons FileUpload library is finished analyzing it. This has been successfully tested on Websphere and Tomcat.

WS-98

Merged

Chat

https://source.sakaiproject.org/svn//chat/branches/SAK-13408

The JSP 2.0 Extended Language (EL) tag library included as a prelude to all of ChatTool's JSPs uses a runtime interpretation of variables. Expressions of the form ${...} will only be interpreted when EL tags are NOT ignored (i.e. they are enabled). By default, Tomcat will enable the runtime interpretation of EL tag expressions, but Websphere will not. This is remedied by explicitly configuring the webapp in its web.xml. This has been successfully tested on Websphere and Tomcat.

WS-16
WS-77

Merged

Gradebook

https://source.sakaiproject.org/svn//gradebook/branches/SAK-13408

This fix addresses the problem of the RoleFilter receiving a blank page name on WebSphere. This fix has been successfully tested on Websphere and Tomcat.

WS-1

Merged

Kernel

https://source.sakaiproject.org/svn//kernel/branches/SAK-13408

This is a result of a context.redirect() method call by the tool with a relative URL. The context.redirect() invocation ultimately results in a HttpServletResponseWrapper.sendRedirect() method call. Unfortunately, the URI value is different between Tomcat and MySQL. The fix is to modify ActiveToolComponent.MyActiveTool.WrappedResponse.sendRedirect() to convert the given target relative URL to an absolute URL using the current context path and path info, if deployed on Websphere. Tomcat behavior is not affected and stays the same. This has been successfully tested on Websphere and Tomcat.

Merged

Metaobj

https://source.sakaiproject.org/svn//metaobj/branches/SAK-13408

The file template.jsp needed the inner quotes to be escaped (<jsp:include page="<%= (String)request.getAttribute(\"_body\")%>" />) in order to be parsed properly by Websphere's JSP parser. Tomcat's parser also still successfully parses and compiles this JSP with this change. In addition, Websphere can't access the spring.tld file if it is in a JAR file. The file has been added to the WEB-INF directory. This has been successfully tested on Websphere and Tomcat.

WS-18

Merged

Msgcntr

https://source.sakaiproject.org/svn//msgcntr/branches/SAK-13408

No changes made.

OSP

https://source.sakaiproject.org/svn//osp/branches/SAK-13408

All the OSP issues that were found (and listed in the next column) are of the same cause. The file template.jsp needed the inner quotes to be escaped (<jsp:include page="<%= (String)request.getAttribute(\"_body\")%>" />) in order to be parsed properly by Websphere's JSP parser. Tomcat's parser also still successfully parses and compiles this JSP with this change. In addition, Websphere can't access the spring.tld file if it is in a JAR file. The file has been added to the WEB-INF directory. This has been successfully tested on Websphere and Tomcat.

WS-4
WS-19
WS-20
WS-21
WS-22
WS-62
WS-63

Merged

Reference

https://source.sakaiproject.org/svn//reference/branches/SAK-13408

No changes made.

Rwiki

https://source.sakaiproject.org/svn//rwiki/branches/SAK-13408

Tomcat and WAS have different URL structures; Attempting to add a link or image would lead to site unavailable errors in Websphere if the Tomcat URL structure is used. The fix allows Webpshere to use its own URL structure. This has been successfully tested on Websphere and Tomcat.

WS-57

Merged

Samigo

https://source.sakaiproject.org/svn//sam/branches/SAK-13408

In confirmTempRemove.jsp, the JSP parser and compiler in Websphere translates and displays "&quot;" as a literal string. However, Tomcat allows the browser to translate it to a quotation mark. The fix is to use an escaped quotation mark. This has been successfully tested on Websphere and Tomcat.

WS-13

Merged

Search

https://source.sakaiproject.org/svn//search/branches/SAK-13408

Websphere must be told where to look for *.vm files. This has been successfully tested on Websphere and Tomcat.

WS-9

Merged

Sections

https://source.sakaiproject.org/svn//sections/branches/SAK-13408

This fix addresses the problem of the RoleFilter receiving a blank page name on WebSphere. In addition, the Websphere JSP compiler wraps the navigation buttons. To fix this issue, the number of columns is decreased in order for the buttons to stay on the same line. This has been successfully tested on Websphere and Tomcat.

WS-45
WS-72

Merged