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<DIV><SPAN class=283421504-19042011><FONT color=#000080 size=2
face="Lucida Sans">Michele,</FONT></SPAN></DIV>
<DIV><SPAN class=283421504-19042011><FONT color=#000080 size=2
face="Lucida Sans"></FONT></SPAN> </DIV>
<DIV><SPAN class=283421504-19042011><FONT color=#000080 size=2
face="Lucida Sans">I have checked in your changes as change 14208. I moved
things around a bit -- I moved your olap4j connection factory out of XmlaServlet
into a new derived class, Olap4jXmlaServlet. And the previous functionality, to
start an embedded mondrian server, is in a new subclass
MondrianXmlaServlet.</FONT></SPAN></DIV>
<DIV><SPAN class=283421504-19042011><FONT color=#000080 size=2
face="Lucida Sans"></FONT></SPAN> </DIV>
<DIV><SPAN class=283421504-19042011><FONT color=#000080 size=2
face="Lucida Sans">I hope that I have preserved the intent of your
changes.</FONT></SPAN></DIV>
<DIV><SPAN class=283421504-19042011><FONT color=#000080 size=2
face="Lucida Sans"></FONT></SPAN> </DIV>
<DIV><SPAN class=283421504-19042011><FONT color=#000080 size=2
face="Lucida Sans">
<DIV><SPAN class=283421504-19042011><SPAN class=283421504-19042011><FONT
color=#000080 size=2 face="Lucida Sans">Thanks for the contribution. It
definitely moves us down the road to an XMLA server that is independent of
mondrian.</FONT></SPAN></SPAN></DIV>
<DIV><SPAN class=283421504-19042011><SPAN class=283421504-19042011><FONT
color=#000080 size=2 face="Lucida Sans"></FONT></SPAN></SPAN> </DIV>Other
users (including Pentaho BI server team), take note: Applications that used
DefaultXmlaServlet should probably now use
MondrianXmlaServlet.</FONT></SPAN></DIV>
<DIV><SPAN class=283421504-19042011><FONT color=#000080 size=2
face="Lucida Sans"></FONT></SPAN> </DIV>
<DIV><SPAN class=283421504-19042011><FONT color=#000080 size=2
face="Lucida Sans">Julian</FONT></SPAN></DIV><BR>
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<FONT size=2 face=Tahoma><B>From:</B> Michele Rossi
[mailto:michele.rossi@gmail.com] <BR><B>Sent:</B> Friday, April 15, 2011 1:36
AM<BR><B>To:</B> Mondrian developer mailing list<BR><B>Cc:</B>
jhyde@pentaho.com<BR><B>Subject:</B> Re: [Mondrian] xmla over olap4j
server<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=gmail_quote>[ re sending to the whole list as requested by Julian
]</DIV>
<DIV class=gmail_quote><BR></DIV>
<DIV class=gmail_quote>Hi Julian,
<DIV>I've completed the first stage of the xmla-over-olap4j work.</DIV>
<DIV><BR></DIV>
<DIV>I still haven't found out how to create patch files - it can probably be
done using the p4 client, I will look at it tomorrow.</DIV>
<DIV><BR></DIV>
<DIV>For now I am attaching to this email the three files that I updated and
an example web.xml that shows how the servlet could be deployed.</DIV>
<DIV>You can find most of my changes easily by searching for [MROSSI].</DIV>
<DIV><BR></DIV>
<DIV>Initially I tried to split out the servlet from the rest of the Mondrian
codebase but the dependencies are many and go fairly deep.</DIV>
<DIV>I am not sure that such an endeavour would be very valuable.</DIV>
<DIV>After all there is nothing wrong in just using the whole mondrian jar as
it is.</DIV>
<DIV><BR></DIV>
<DIV>I've tested my code using Excel and the SimbaO2X adapter.</DIV>
<DIV>I can successfully connect to a Foodmart olap database in the following
way:</DIV>
<DIV><BR></DIV>
<DIV>Excel-->Simba-->My Server with the modified
DefaultXmlaServlet-->Olap4j Xmla Driver-->A standard mondrian
installation with a standard xmla servlet.</DIV>
<DIV><BR></DIV>
<DIV>I will need to make some more changes to handle the credentials passed by
Excel in the XMLA requests.</DIV>
<DIV>I did most of the work last year but never contributed it back.</DIV>
<DIV><BR></DIV>
<DIV>What do you think?</DIV>
<DIV>How do you think I should proceed from this point?</DIV>
<DIV><BR></DIV>
<DIV>Many thanks!</DIV>
<DIV>Michele</DIV>
<DIV>
<DIV></DIV>
<DIV class=h5>
<DIV> </DIV>
<DIV><BR><BR>
<DIV class=gmail_quote>On 11 March 2011 17:56, Julian Hyde <SPAN
dir=ltr><<A href="mailto:jhyde@pentaho.com"
target=_blank>jhyde@pentaho.com</A>></SPAN> wrote:<BR>
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class=gmail_quote>
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<DIV><FONT color=#000080 size=2 face="Lucida Sans"></FONT> </DIV><BR>
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style="BORDER-LEFT: #000080 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px"
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<HR>
<FONT size=2 face=Tahoma><B>From:</B> Michele Rossi [mailto:<A
href="mailto:michele.rossi@gmail.com"
target=_blank>michele.rossi@gmail.com</A>] <BR><B>Sent:</B> Friday, March
11, 2011 1:43 AM<BR><B>To:</B> <A href="mailto:mondrian@pentaho.org"
target=_blank>mondrian@pentaho.org</A>; <A href="mailto:jhyde@pentaho.com"
target=_blank>jhyde@pentaho.com</A><BR><B>Subject:</B> Re: [Mondrian] xmla
over olap4j server<BR></FONT><BR></DIV>
<DIV>
<DIV></DIV>[re-sending from my private email address as it's not working
from my work address]
<DIV><BR>
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style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote>
<DIV class=gmail_quote><BR>
<DIV class=gmail_quote><SPAN
style="BORDER-COLLAPSE: collapse; FONT-FAMILY: arial, sans-serif; FONT-SIZE: 13px">Julian,
<DIV>I have a few questions for you:</DIV>
<DIV><BR></DIV>
<DIV>1. How do I get started?</DIV>
<DIV>Can you create an account on perforce for me with write
permissions?<SPAN><FONT color=#000080 size=2
face="Lucida Sans"> </FONT></SPAN></DIV></SPAN></DIV></DIV></BLOCKQUOTE></DIV></DIV></BLOCKQUOTE>
<DIV dir=ltr class=gmail_quote><SPAN><FONT color=#000080 size=2
face="Lucida Sans">Please submit your changes as patches attached to jira
cases. We don't give people committer privileges until they have made a few
successful contributions. </FONT></SPAN></DIV>
<DIV>
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style="BORDER-LEFT: #000080 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px"
dir=ltr>
<BLOCKQUOTE
style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote>
<DIV class=gmail_quote><SPAN> </SPAN>2. Olap4j drillthrough</DIV>
<DIV class=gmail_quote>The mondrian olap4j driver implements
drillthrough via the "executeQuery" method which returns a
java.sql.ResultSet right? </DIV>
<DIV class=gmail_quote>Can we not leverage that method to implement
drillthrough on the xmla server?<SPAN><FONT color=#000080 size=2
face="Lucida Sans"> </FONT></SPAN></DIV></BLOCKQUOTE></BLOCKQUOTE></DIV>
<DIV dir=ltr class=gmail_quote><SPAN><FONT color=#000080 size=2
face="Lucida Sans">Possibly. Depends on your requirements. Mondrian's XMLA
clients expect more in the XMLA response than is currently available in the
ResultSet returned by that method. Therefore the XMLA server calls a method
in XmlaExtra. The default implementation of XmlaExtra calls executeQuery.
Same effect, longer route.</FONT></SPAN></DIV>
<DIV>
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dir=ltr>
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<DIV class=gmail_quote><SPAN></SPAN> </DIV><FONT color=#000080
size=2 face="Lucida Sans"></FONT></BLOCKQUOTE>
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class=gmail_quote>
<DIV class=gmail_quote><FONT color=#000080 size=2
face="Lucida Sans"></FONT><BR></DIV>
<DIV class=gmail_quote>3. The new project:</DIV>
<DIV class=gmail_quote>We will need a new "olap4j xmla server" project
with its separate build an dependencies.</DIV>
<DIV class=gmail_quote>Can you think of a good name for it?</DIV>
<DIV class=gmail_quote>Perhaps Olap4jXmlaServer could be a good
candidate :)<SPAN><FONT color=#000080 size=2
face="Lucida Sans"> </FONT></SPAN></DIV></BLOCKQUOTE></BLOCKQUOTE></DIV>
<DIV dir=ltr class=gmail_quote><SPAN><FONT color=#000080 size=2
face="Lucida Sans">Sounds reasonable.</FONT></SPAN></DIV>
<DIV>
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dir=ltr>
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class=gmail_quote>
<DIV class=gmail_quote>4. How to build the new project: </DIV>
<DIV class=gmail_quote>I know that mondrian is built using Ant.</DIV>
<DIV class=gmail_quote><FONT color=#000080 size=2
face="Lucida Sans"></FONT><BR></DIV>
<DIV class=gmail_quote>Have you ever thought about starting to use
Maven?</DIV>
<DIV class=gmail_quote>I've used Maven successfully for years and I've
totally forgot how to use ant.</DIV>
<DIV class=gmail_quote><FONT color=#000080 size=2
face="Lucida Sans"></FONT><BR></DIV>
<DIV class=gmail_quote>I think it would also be beneficial in terms of
linking olap4j releases with server releases.</DIV>
<DIV class=gmail_quote>We could then distribute both olap4j, mondrian
and the xmla server on public maven repositories.<SPAN><FONT
color=#000080 size=2
face="Lucida Sans"> </FONT></SPAN></DIV></BLOCKQUOTE></BLOCKQUOTE></DIV>
<DIV dir=ltr class=gmail_quote><SPAN><FONT color=#000080 size=2
face="Lucida Sans">At this point I don't want to create a new project. I
would like to work with the xmla server code in situ in the mondrian code
base, to learn what the necessary changes are, and where would be the
appropriate cut points. Then I will help you factor it into another project.
But first, let's get it working in situ.</FONT></SPAN></DIV>
<DIV dir=ltr class=gmail_quote><SPAN><FONT color=#000080 size=2
face="Lucida Sans"></FONT></SPAN> </DIV>
<DIV dir=ltr class=gmail_quote><SPAN><FONT color=#000080 size=2
face="Lucida Sans">Re. maven, see below.</FONT></SPAN></DIV>
<DIV>
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dir=ltr>
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class=gmail_quote><FONT color=#000080 size=2 face="Lucida Sans"></FONT>
<DIV class=gmail_quote><FONT color=#000080 size=2
face="Lucida Sans"></FONT><FONT color=#000080 size=2
face="Lucida Sans"></FONT><FONT color=#000080 size=2
face="Lucida Sans"></FONT><FONT color=#000080 size=2
face="Lucida Sans"></FONT><FONT color=#000080 size=2
face="Lucida Sans"></FONT><FONT color=#000080 size=2
face="Lucida Sans"></FONT><BR></DIV>
<DIV class=gmail_quote>5. Proposed solution</DIV>
<DIV class=gmail_quote>I can put together a webapp project quickly using
the following ingredients </DIV>
<DIV class=gmail_quote><FONT color=#000080 size=2
face="Lucida Sans"></FONT><BR></DIV>
<DIV class=gmail_quote>a. maven build</DIV>
<DIV class=gmail_quote><FONT color=#000080 size=2
face="Lucida Sans"></FONT><BR></DIV>
<DIV class=gmail_quote>b. unit tests based on mondrian: </DIV>
<DIV class=gmail_quote>You create an in-process mondrian instance and
connect to it using the mondrian olap4j driver. </DIV>
<DIV class=gmail_quote>Then you hit the new server using the olap4j xmla
driver. </DIV>
<DIV class=gmail_quote>You can then compare results making assertions on
the equality of metadata and values.</DIV>
<DIV class=gmail_quote><FONT color=#000080 size=2
face="Lucida Sans"></FONT><BR></DIV>
<DIV class=gmail_quote>c. The output artifact would a standard .WAR
file </DIV>
<DIV class=gmail_quote><FONT color=#000080 size=2
face="Lucida Sans"></FONT><BR></DIV>
<DIV class=gmail_quote>d. Jetty launcher</DIV>
<DIV class=gmail_quote>I propose the creation of a jetty launcher
too. </DIV>
<DIV class=gmail_quote>I can create such launcher using maven reasonably
quickly. </DIV>
<DIV class=gmail_quote>The result would be a tar.gz file with a number
of sub-folders, one of them containing the .war file discussed above,
others containing shared jetty libraries and finally the .bat and .sh
launchers.</DIV>
<DIV class=gmail_quote><FONT color=#000080 size=2
face="Lucida Sans"></FONT><BR></DIV>
<DIV class=gmail_quote>We could then have a "cfg" folder with a template
.properties file where a user would have to put the details of his/her
favourite olap4j driver and the connection details.<SPAN><FONT
color=#000080 size=2
face="Lucida Sans"> </FONT></SPAN></DIV></BLOCKQUOTE></BLOCKQUOTE></DIV>
<DIV dir=ltr class=gmail_quote><SPAN><FONT color=#000080 size=2
face="Lucida Sans">All of the above sounds fine. In due course. But please,
don't make big changes as the first step. (I've found that the most
successful committers are the ones who submit small patches at
first.)</FONT></SPAN></DIV>
<DIV dir=ltr class=gmail_quote><SPAN><FONT color=#000080 size=2
face="Lucida Sans"></FONT></SPAN> </DIV>
<DIV dir=ltr class=gmail_quote><SPAN><FONT color=#000080 size=2
face="Lucida Sans">In this case, the patches would be whatever hacks to
mondrian's xmla server are necessary to build your flavor of the server. I
will learn a lot from those patches.</FONT></SPAN></DIV>
<DIV dir=ltr class=gmail_quote><SPAN><FONT color=#000080 size=2
face="Lucida Sans"></FONT></SPAN> </DIV>
<DIV dir=ltr class=gmail_quote><SPAN><FONT color=#000080 size=2
face="Lucida Sans">When time comes to create the new project, we can discuss
using maven. You'd have to make a strong case, because it would be a Pentaho
project (containing about 15k of mondrian source code, plus unit tests) and
Pentaho projects have standardized on using an ant+ivy+subfloor
infrastructure.</FONT></SPAN></DIV>
<DIV dir=ltr class=gmail_quote><SPAN><FONT color=#000080 size=2
face="Lucida Sans"></FONT></SPAN> </DIV><FONT color=#888888>
<DIV dir=ltr class=gmail_quote><SPAN><FONT color=#000080 size=2
face="Lucida Sans">Julian</FONT></SPAN></DIV></FONT></DIV></BLOCKQUOTE></DIV><BR></DIV></DIV></DIV></DIV><BR></BLOCKQUOTE></BODY></HTML>