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<title>POI 1.0 Vision Document</title>
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<td valign="top" align="left"><a href="http://jakarta.apache.org/index.html"><img hspace="0" vspace="0" border="0" src="images/jakarta-logo.gif"></a></td><td width="100%" valign="top" align="left" bgcolor="#ffffff"><img hspace="0" vspace="0" border="0" align="right" src="images/header.gif"></td>
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<td colspan="2" bgcolor="#525d76"><span class="c1"><a class="black" href="http://www.apache.org/">www.apache.org ></a><a class="black" href="http://jakarta.apache.org/">jakarta.apache.org ></a><a href="http://jakarta.apache.org/poi/" class="black">jakarta.apache.org/poi</a></span></td>
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<td width="1%">
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<br>
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</td><td nowrap="1" valign="top" width="14%">
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<hr>
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<span class="s1">Navigation</span>
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<br>
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<a class="s1" href="../index.html">Main</a>
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<br>
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<hr>
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<span class="s1">Planning Documents</span>
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<br>
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<a class="s1" href="POI10Vision.html">1.0 Vision</a>
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<br>
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<a class="s1" href="POI20Vision.html">2.0 Vision</a>
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<br>
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</td><td width="1%">
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<br>
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</td><td align="left" valign="top" width="*">
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<title>POI 1.0 Vision Document</title>
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<table width="100%" align="center" class="centered">
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<tbody>
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<td bgcolor="#f3dd61"><span class="title">POI 1.0 Vision Document</span></td>
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<font size="-2" color="#000000">
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<p>
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<a href="mailto:"></a>
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</p>
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</font>
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<div align="right">
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<td bgcolor="#525D76"><font color="#ffffff" size="+1"><font face="Arial,sans-serif"><b>Preface</b></font></font></td>
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<tr>
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<br>
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<p align="justify">
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(21-Jan-02) While this document is just full of useful project
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introductory information and I do suggest those interested in getting
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involved in the project read it, it is woefully out of date.
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</p>
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<p align="justify">
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We deliberately allowed this document to run out of date because it
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is a good reflection of what the original vision was for POI 1.0.
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You'll note that some of the terminology is not used in quite the same
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way any longer. I've made some minor corrections where reading this
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confused me. An example: in some places this document may refer to
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POI API instead of POIFS API. When this vision was written we had
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an incomplete understanding of the project.
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</p>
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<p align="justify">
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Lastly, the scope of the project expanded dramatically near the end
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of the 1.0 cycle. Our vision at the time was to focus merely on the
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Excel port (having no idea how the project would grow or be received)
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and provide the OLE 2 Compound Document port for others to port later
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formats. We now plan to spearhead these ports under the umbrella of
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the POI project. So, you've been warned. Read on, but just realize
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that we had a fuzzy view of things to come, and hindsight is 20-20.
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</p>
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<p align="justify">
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If I recall major holes were: a complete understanding of the format
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of OLE 2 Compound Document format, Excel file format, and exactly how
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Cocoon 2 Serializers worked. (that just about covers the whole range
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huh?)
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</p>
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<div align="right">
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<table cellspacing="0" cellpadding="2" border="0" width="100%">
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<td bgcolor="#525D76"><font color="#ffffff" size="+1"><font face="Arial,sans-serif"><b>1. Introduction</b></font></font></td>
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<div align="right">
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<table cellspacing="0" cellpadding="2" border="0" width="99%">
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<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>1.1 Purpose of this document</b></font></font></td>
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<br>
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<p align="justify">
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The purpose of this document is to
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collect, analyze and define high-level requirements, user needs and
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features of the HSSF Serializer for Cocoon 2 and related libraries.
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The HSSF Serializer is a java class supporting the Serializer
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interface from the Cocoon 2 project and outputting in a compatible
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format of that used by the spreadsheet program Microsoft Excel '97.
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The HSSF Serializer will be responsible for converting XML
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spreadsheet-like documents into Excel-compatible XLS spreadsheets.
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</p>
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</td>
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</tr>
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</table>
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</div>
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<br>
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<div align="right">
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<table cellspacing="0" cellpadding="2" border="0" width="99%">
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<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>1.2 Project Overview</b></font></font></td>
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</tr>
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<br>
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<p align="justify">
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Many web apps today hit a brick wall
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when it comes to the user request that they be able to easily
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manipulate their reports and data extracts in the popular Microsoft
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Excel spreadsheet format. This often causes inferior technologies to be
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chosen for the project simply because they easily support this
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format. This project seeks to extend existing XML, Java and Apache
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Cocoon 2 project technologies by:
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</p>
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<ul>
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<li>
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providing an extensible library
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(POIFS) which reads/writes in a compatable format to OLE 2 Compound
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Document Format (aka Structured Storage Format) for easy
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implementation of other document types;
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</li>
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<li>
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providing a library (HSSF) for
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manipulating spreadsheet data and outputting it in a compatible
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format to Microsoft Excel XLS format;
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</li>
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<li>
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and providing a Cocoon 2
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Serializer (HSSFSerializer) for serializing XML documents as
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Excel-compatible spreadsheets.
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</li>
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</ul>
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</td>
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</table>
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</div>
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<br>
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</td>
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</tr>
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</table>
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</div>
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<br>
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<div align="right">
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<table cellspacing="0" cellpadding="2" border="0" width="100%">
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<td bgcolor="#525D76"><font color="#ffffff" size="+1"><font face="Arial,sans-serif"><b>2. User Description</b></font></font></td>
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<br>
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<div align="right">
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<table cellspacing="0" cellpadding="2" border="0" width="99%">
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<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>2.1 User/Market Demographics</b></font></font></td>
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<br>
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<p align="justify">
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There are a number of enthusiastic
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users of XML, UNIX and Java technology. Secondly, the Microsoft
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solution for outputting Office Document formats often involves
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actually manipulating the software as an OLE Server. This method
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provides extremely low performance, extremely high overhead and is
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only capable of handing one document at a time.
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</p>
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<ol>
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<li>
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Our intended audience for the HSSF
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Serializer portion of this project are developers writing reports or
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data extracts in XML format.
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</li>
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<li>
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Our intended audience for the HSSF
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library portion of this project is ourselves as we are developing
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the serializer and anyone who needs to write to Excel spreadsheets
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in a non-XML Java environment or who has specific needs not
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addressed by the Serializer.
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</li>
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<li>
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Our intended audience for the
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"POIFS" OLE 2 Compound Document format reader/writer is
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ourselves as we are writing the HSSF library and secondly, anyone
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wishing to provide other libraries for reading/writing OLE 2
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Compound Document Format in Java.
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</li>
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</ol>
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</table>
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</div>
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<br>
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<div align="right">
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<table cellspacing="0" cellpadding="2" border="0" width="99%">
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<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>2.2. User environment</b></font></font></td>
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<p align="justify">
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The users of this software shall be
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developers in a Java environment on any Operating System or power
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users who are capable of XML document generation/deployment.
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</p>
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</td>
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</table>
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<br>
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<div align="right">
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<table cellspacing="0" cellpadding="2" border="0" width="99%">
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<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>2.3. Key User Needs</b></font></font></td>
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|
|
|
<td>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<p align="justify">
|
|
|
|
|
The OLE 2 Compound Document format is
|
|
|
|
|
undocumented for all practical purposes and cryptic for all
|
|
|
|
|
impractical purposes. Developer needs in this area include
|
|
|
|
|
documentation and an easy to use library for reading and writing in
|
|
|
|
|
this format without requiring the developer to have intimate
|
|
|
|
|
knowledge of the format.
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<p align="justify">
|
|
|
|
|
There is currently no good way to write
|
|
|
|
|
to Microsoft Excel documents from Java or from a non-Microsoft
|
|
|
|
|
Windows based platform for that matter. Developers need an easy to
|
|
|
|
|
use library that supports a reasonable feature set and allows
|
|
|
|
|
seperation of data from formatting/stylistic concerns.
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<p align="justify">
|
|
|
|
|
There is currently no good way to
|
|
|
|
|
transform XML data to Microsoft Excel. Apache's Cocoon 2 project
|
|
|
|
|
supplies a complete framework for XML, but nothing for outputting in
|
|
|
|
|
Excel's XLS format. Developers and power users alike need a simple
|
|
|
|
|
method to output XML documents to Excel through server-side
|
|
|
|
|
processing.
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
</div>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<div align="right">
|
|
|
|
|
<table cellspacing="0" cellpadding="2" border="0" width="99%">
|
|
|
|
|
<tr>
|
|
|
|
|
<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>2.4. Alternatives and Competition</b></font></font></td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<p align="justify">
|
|
|
|
|
The alternative to this project is to
|
|
|
|
|
buy the $10,000 Formula 1 library (<a href="http://www.tidestone.com/">www.tidestone.com</a>)
|
|
|
|
|
and accept its crude api and limitations. As a second alternative,
|
|
|
|
|
give up XML and write Visual Basic code on a Microsoft Windows based
|
|
|
|
|
Environment or output in Microsoft's beta and primarily undocumented
|
|
|
|
|
XML for office format.
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
</div>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
</div>
|
|
|
|
|
<br>
|
|
|
|
|
<div align="right">
|
|
|
|
|
<table cellspacing="0" cellpadding="2" border="0" width="100%">
|
|
|
|
|
<tr>
|
|
|
|
|
<td bgcolor="#525D76"><font color="#ffffff" size="+1"><font face="Arial,sans-serif"><b>3. Project Overview</b></font></font></td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<div align="right">
|
|
|
|
|
<table cellspacing="0" cellpadding="2" border="0" width="99%">
|
|
|
|
|
<tr>
|
|
|
|
|
<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>3.1. Project Perspective</b></font></font></td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<p align="justify">
|
|
|
|
|
The produced code shall be licensed by
|
|
|
|
|
the Apache License as used by the Cocoon 2 project and maintained on
|
|
|
|
|
a project page until such time as the Cocoon 2 developers accept it
|
|
|
|
|
as a donation (at which time the copyright will be turned over to
|
|
|
|
|
them).
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
</div>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<div align="right">
|
|
|
|
|
<table cellspacing="0" cellpadding="2" border="0" width="99%">
|
|
|
|
|
<tr>
|
|
|
|
|
<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>3.2. Project Position Statement</b></font></font></td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<p align="justify">
|
|
|
|
|
For developers on a Java and/or XML
|
|
|
|
|
environment this project will provide all the tools necessary for
|
|
|
|
|
outputting XML data in the Microsoft Excel format. This project seeks
|
|
|
|
|
to make the use of Microsoft Windows based servers unnecessary for
|
|
|
|
|
file format considerations and to fully document the OLE 2 Compound
|
|
|
|
|
Document format. The project aims not only to provide the tools for
|
|
|
|
|
serializing XML to Excel's file format and the tools for writing to
|
|
|
|
|
that file format from Java, but also to provide the tools for later
|
|
|
|
|
projects to convert other OLE 2 Compound Document formats to pure
|
|
|
|
|
Java APIs.
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
</div>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<div align="right">
|
|
|
|
|
<table cellspacing="0" cellpadding="2" border="0" width="99%">
|
|
|
|
|
<tr>
|
|
|
|
|
<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>3.3. Summary of Capabilities</b></font></font></td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<p align="justify">
|
|
|
|
|
HSSF Serializer for Apache Cocoon 2
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<table width="100%" cellspacing="2" cellpadding="2" border="0">
|
|
|
|
|
<tr>
|
|
|
|
|
|
|
|
|
|
<td valign="top" bgcolor="#a0ddf0" align="left"><font size="-1" color="#000000">
|
|
|
|
|
Benefit
|
|
|
|
|
</font></td>
|
|
|
|
|
<td valign="top" bgcolor="#a0ddf0" align="left"><font size="-1" color="#000000">
|
|
|
|
|
Supporting Features
|
|
|
|
|
</font></td>
|
|
|
|
|
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
|
|
|
|
|
<td valign="top" bgcolor="#a0ddf0" align="left"><font size="-1" color="#000000">
|
|
|
|
|
Standard XML tag language for sheet data
|
|
|
|
|
</font></td>
|
|
|
|
|
<td valign="top" bgcolor="#a0ddf0" align="left"><font size="-1" color="#000000">
|
|
|
|
|
Serializer will transform documents utilizing a defined tag
|
|
|
|
|
language
|
|
|
|
|
</font></td>
|
|
|
|
|
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
|
|
|
|
|
<td valign="top" bgcolor="#a0ddf0" align="left"><font size="-1" color="#000000">
|
|
|
|
|
Utilize XML to output in Excel
|
|
|
|
|
</font></td>
|
|
|
|
|
<td valign="top" bgcolor="#a0ddf0" align="left"><font size="-1" color="#000000">
|
|
|
|
|
Serializer will output in Excel
|
|
|
|
|
</font></td>
|
|
|
|
|
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
|
|
|
|
|
<td valign="top" bgcolor="#a0ddf0" align="left"><font size="-1" color="#000000">
|
|
|
|
|
Java API to output in Excel on any platform
|
|
|
|
|
</font></td>
|
|
|
|
|
<td valign="top" bgcolor="#a0ddf0" align="left"><font size="-1" color="#000000">
|
|
|
|
|
The project will develop an API that outputs in Excel using
|
|
|
|
|
pure Java.
|
|
|
|
|
</font></td>
|
|
|
|
|
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
|
|
|
|
|
<td valign="top" bgcolor="#a0ddf0" align="left"><font size="-1" color="#000000">
|
|
|
|
|
Make it easy for developers to port other OLE 2 Compound
|
|
|
|
|
Document-based formats to Java.
|
|
|
|
|
</font></td>
|
|
|
|
|
<td valign="top" bgcolor="#a0ddf0" align="left"><font size="-1" color="#000000">
|
|
|
|
|
The POIFS library will contain both a high-level abstraction
|
|
|
|
|
along with low-level constructs. The project will fully document
|
|
|
|
|
the OLE 2 Compound Document Format.
|
|
|
|
|
</font></td>
|
|
|
|
|
|
|
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
</div>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<div align="right">
|
|
|
|
|
<table cellspacing="0" cellpadding="2" border="0" width="99%">
|
|
|
|
|
<tr>
|
|
|
|
|
<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>3.4. Assumptions and Dependencies</b></font></font></td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<ul>
|
|
|
|
|
|
|
|
|
|
<li>
|
|
|
|
|
The HSSF Serializer will run on
|
|
|
|
|
any Java 2 supporting platform with Apache Cocoon 2 installed along
|
|
|
|
|
with the HSSF and POIFS APIs.
|
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
<li>
|
|
|
|
|
The HSSF API requires a Java 2
|
|
|
|
|
implementation and the POI API.
|
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
<li>
|
|
|
|
|
The POIFS API requires a Java 2
|
|
|
|
|
implementation.
|
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
</div>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
</div>
|
|
|
|
|
<br>
|
|
|
|
|
<div align="right">
|
|
|
|
|
<table cellspacing="0" cellpadding="2" border="0" width="100%">
|
|
|
|
|
<tr>
|
|
|
|
|
<td bgcolor="#525D76"><font color="#ffffff" size="+1"><font face="Arial,sans-serif"><b>4. Project Features</b></font></font></td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<p align="justify">
|
|
|
|
|
The POIFS API will include:
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<ul>
|
|
|
|
|
|
|
|
|
|
<li>
|
|
|
|
|
Low level structures representing
|
|
|
|
|
the structures in a POI filesystems.
|
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
<li>
|
|
|
|
|
A low-level API for
|
|
|
|
|
creating/manipulating POI filesystems.
|
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
<li>
|
|
|
|
|
A set of high level interfaces
|
|
|
|
|
abstracting the user from the POI filesystem constructs and
|
|
|
|
|
representing it as a standard filesystem (Files, directories, etc)
|
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
<p align="justify">
|
|
|
|
|
The HSSF API will include:
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<ul>
|
|
|
|
|
|
|
|
|
|
<li>
|
|
|
|
|
Low level structures representing
|
|
|
|
|
the structures in an Excel file.
|
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
<li>
|
|
|
|
|
A low-level API for creating and
|
|
|
|
|
manipulating Excel files and writing them into POI filesystems.
|
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
<li>
|
|
|
|
|
A high level model and style
|
|
|
|
|
interface for manipulating spreadsheet data without knowing anything
|
|
|
|
|
about the Excel format itself.
|
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
<div align="right">
|
|
|
|
|
<table cellspacing="0" cellpadding="2" border="0" width="99%">
|
|
|
|
|
<tr>
|
|
|
|
|
<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>4.1 POI Filesystem API</b></font></font></td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<p align="justify">
|
|
|
|
|
The POI Filesystem API includes:
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<ul>
|
|
|
|
|
|
|
|
|
|
<li>An implementation of Big Blocks</li>
|
|
|
|
|
|
|
|
|
|
<li>An implementation of Small Blocks</li>
|
|
|
|
|
|
|
|
|
|
<li>An implementation of Header Blocks</li>
|
|
|
|
|
|
|
|
|
|
<li>An implementation of Block Allocation Tables</li>
|
|
|
|
|
|
|
|
|
|
<li>An implementation of Property Sets</li>
|
|
|
|
|
|
|
|
|
|
<li>An implementation of the POI
|
|
|
|
|
filesystem including functions to get and set the above constructs;
|
|
|
|
|
compound functions for reading/writing files/directories.
|
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
<li>An abstraction of the POI
|
|
|
|
|
filesystem providing interfaces representing Files, Directories,
|
|
|
|
|
FileSystems in normal terminology and encapulating the above
|
|
|
|
|
constructs.
|
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
<li>Full documentation of the POI file
|
|
|
|
|
format.
|
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
<li>Full documentation of the APIs and
|
|
|
|
|
interfaces provided through Javadoc, user documentation (aimed at
|
|
|
|
|
developers using the APIs)
|
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
<li>Examples aimed at teaching the
|
|
|
|
|
user to write code using POI. (titled: recipes for POI)
|
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
<li>Performance specifications.
|
|
|
|
|
(Example POI filesystems rated by some measure of complexity along
|
|
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|
|
with system specifications and execution times for given operations)
|
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</li>
|
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|
|
</ul>
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</td>
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|
</tr>
|
|
|
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|
</table>
|
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|
|
|
</div>
|
|
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|
|
<br>
|
|
|
|
|
|
|
|
|
|
<div align="right">
|
|
|
|
|
<table cellspacing="0" cellpadding="2" border="0" width="99%">
|
|
|
|
|
<tr>
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|
<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>4.2 HSSF API</b></font></font></td>
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</tr>
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|
<tr>
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|
<td>
|
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|
<br>
|
|
|
|
|
|
|
|
|
|
<p align="justify">
|
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|
|
The HSSF API includes:
|
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|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<ul>
|
|
|
|
|
|
|
|
|
|
<li>An implementation of Record
|
|
|
|
|
(binary 2 byte type followed by 2 byte size (n) followed by n bytes)</li>
|
|
|
|
|
|
|
|
|
|
<li>Implementations of many standard
|
|
|
|
|
record types mapping the data bytes to fields along with methods to
|
|
|
|
|
reserialize those fields</li>
|
|
|
|
|
|
|
|
|
|
<li>An implementation of the HSSF File
|
|
|
|
|
including functions to get/set the above constructs, create a blank
|
|
|
|
|
file with the minimum required record types and mappings between
|
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|
|
|
getting/setting data and style in a workbook to the creation of
|
|
|
|
|
record types, and read HSSF files.</li>
|
|
|
|
|
|
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|
|
<li>An abstraction of the HSSF file
|
|
|
|
|
format providing interfaces representing the HSSF File, HSSF
|
|
|
|
|
Workbook, HSSF Sheet, HSSF Column, HSSF Formulas in a manner
|
|
|
|
|
seperating the data from the styling and encapsulating the above
|
|
|
|
|
constructs.</li>
|
|
|
|
|
|
|
|
|
|
<li>Full documentation of the HSSF
|
|
|
|
|
file format (which will be a subset of the Excel '97 File format).
|
|
|
|
|
This must be done with care for legal reasons.</li>
|
|
|
|
|
|
|
|
|
|
<li>Full documentation of the APIs and
|
|
|
|
|
interfaces provided through Javadoc, user documentation (aimed at
|
|
|
|
|
developers using the apis).</li>
|
|
|
|
|
|
|
|
|
|
<li>Examples aimed at teaching
|
|
|
|
|
developers to use the APIs.
|
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
<li>Performance specifications.
|
|
|
|
|
(Example files rated by some measure of complexity along with system
|
|
|
|
|
specifications and execution times for given operations - possibly
|
|
|
|
|
the same files used for POI's tests)</li>
|
|
|
|
|
|
|
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
</div>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<div align="right">
|
|
|
|
|
<table cellspacing="0" cellpadding="2" border="0" width="99%">
|
|
|
|
|
<tr>
|
|
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|
|
<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>4.3 HSSF Serializer</b></font></font></td>
|
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|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<p align="justify">
|
|
|
|
|
The HSSF Serializer subproject:
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<ul>
|
|
|
|
|
|
|
|
|
|
<li>A class supporting the Cocoon 2
|
|
|
|
|
Serializer Interface.</li>
|
|
|
|
|
|
|
|
|
|
<li>An interface between the SAX
|
|
|
|
|
events and the HSSF APIs.</li>
|
|
|
|
|
|
|
|
|
|
<li>A specified tag language for using
|
|
|
|
|
with the Serializer.</li>
|
|
|
|
|
|
|
|
|
|
<li>Documentation on the tag language
|
|
|
|
|
for the HSSF Serializer</li>
|
|
|
|
|
|
|
|
|
|
<li>Normal javadocs.</li>
|
|
|
|
|
|
|
|
|
|
<li>Example XML files</li>
|
|
|
|
|
|
|
|
|
|
<li>Performance specifications.
|
|
|
|
|
(Example XML docs and stylesheets rated by some measure of
|
|
|
|
|
complexity along with system specifications and execution times)</li>
|
|
|
|
|
|
|
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
</div>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
</div>
|
|
|
|
|
<br>
|
|
|
|
|
<div align="right">
|
|
|
|
|
<table cellspacing="0" cellpadding="2" border="0" width="100%">
|
|
|
|
|
<tr>
|
|
|
|
|
<td bgcolor="#525D76"><font color="#ffffff" size="+1"><font face="Arial,sans-serif"><b>5. Other Product Requirements</b></font></font></td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<div align="right">
|
|
|
|
|
<table cellspacing="0" cellpadding="2" border="0" width="99%">
|
|
|
|
|
<tr>
|
|
|
|
|
<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>5.1. Applicable Standards</b></font></font></td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<p align="justify">
|
|
|
|
|
All Java code will be 100% pure Java.
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
</div>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<div align="right">
|
|
|
|
|
<table cellspacing="0" cellpadding="2" border="0" width="99%">
|
|
|
|
|
<tr>
|
|
|
|
|
<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>5.2. System Requirements</b></font></font></td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<p align="justify">
|
|
|
|
|
The minimum system requirements for POIFS are:
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<ul>
|
|
|
|
|
|
|
|
|
|
<li>64 Mbytes memory</li>
|
|
|
|
|
|
|
|
|
|
<li>Java 2 environment</li>
|
|
|
|
|
|
|
|
|
|
<li>Pentium or better processor (or equivalent on other platforms)</li>
|
|
|
|
|
|
|
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
<p align="justify">
|
|
|
|
|
The minimum system requirements for HSSF are:
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<ul>
|
|
|
|
|
|
|
|
|
|
<li>64 Mbytes memory</li>
|
|
|
|
|
|
|
|
|
|
<li>Java 2 environment</li>
|
|
|
|
|
|
|
|
|
|
<li>Pentium or better processor (or equivalent on other platforms)</li>
|
|
|
|
|
|
|
|
|
|
<li>POIFS API</li>
|
|
|
|
|
|
|
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
<p align="justify">
|
|
|
|
|
The minimum system requirements for the HSSF Serializer are:
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<ul>
|
|
|
|
|
|
|
|
|
|
<li>64 Mbytes memory</li>
|
|
|
|
|
|
|
|
|
|
<li>Java 2 environment</li>
|
|
|
|
|
|
|
|
|
|
<li>Pentium or better processor (or equivalent on other platforms)</li>
|
|
|
|
|
|
|
|
|
|
<li>Cocoon 2</li>
|
|
|
|
|
|
|
|
|
|
<li>HSSF API</li>
|
|
|
|
|
|
|
|
|
|
<li>POI API</li>
|
|
|
|
|
|
|
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
</div>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<div align="right">
|
|
|
|
|
<table cellspacing="0" cellpadding="2" border="0" width="99%">
|
|
|
|
|
<tr>
|
|
|
|
|
<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>5.3. Performance Requirements</b></font></font></td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<p align="justify">
|
|
|
|
|
All components must perform well enough
|
|
|
|
|
to be practical for use in a webserver environment (especially
|
|
|
|
|
Cocoon2/Tomcat/Apache combo)
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
</div>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<div align="right">
|
|
|
|
|
<table cellspacing="0" cellpadding="2" border="0" width="99%">
|
|
|
|
|
<tr>
|
|
|
|
|
<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>5.4. Environmental Requirements</b></font></font></td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<p align="justify">
|
|
|
|
|
The software will run primarily in
|
|
|
|
|
developer environments. We should make some allowances for
|
|
|
|
|
not-highly-technical users to write XML documents for the HSSF
|
|
|
|
|
Serializer. All other components will assume intermediate Java 2
|
|
|
|
|
knowledge. No XML knowledge will be required except for using the
|
|
|
|
|
HSSF Serializer. As much documentation as is practical shall be
|
|
|
|
|
required for all components as XML is relatively new, and the
|
|
|
|
|
concepts introduced for writing spreadsheets and to POI filesystems
|
|
|
|
|
will be brand new to Java and many Java developers.
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
</div>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
</div>
|
|
|
|
|
<br>
|
|
|
|
|
<div align="right">
|
|
|
|
|
<table cellspacing="0" cellpadding="2" border="0" width="100%">
|
|
|
|
|
<tr>
|
|
|
|
|
<td bgcolor="#525D76"><font color="#ffffff" size="+1"><font face="Arial,sans-serif"><b>6. Documentation Requirements</b></font></font></td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<div align="right">
|
|
|
|
|
<table cellspacing="0" cellpadding="2" border="0" width="99%">
|
|
|
|
|
<tr>
|
|
|
|
|
<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>6.1 POI Filesystem</b></font></font></td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<p align="justify">
|
|
|
|
|
The filesystem as read and written by
|
|
|
|
|
POI shall be fully documented and explained so that the average Java
|
|
|
|
|
developer can understand it.
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
</div>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<div align="right">
|
|
|
|
|
<table cellspacing="0" cellpadding="2" border="0" width="99%">
|
|
|
|
|
<tr>
|
|
|
|
|
<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>6.2. POI API</b></font></font></td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<p align="justify">
|
|
|
|
|
The POI API will be fully documented
|
|
|
|
|
through Javadoc. A walkthrough of using the high level POI API shall
|
|
|
|
|
be provided. No documentation outside of the Javadoc shall be
|
|
|
|
|
provided for the low-level POI APIs.
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
</div>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<div align="right">
|
|
|
|
|
<table cellspacing="0" cellpadding="2" border="0" width="99%">
|
|
|
|
|
<tr>
|
|
|
|
|
<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>6.3. HSSF File Format</b></font></font></td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<p align="justify">
|
|
|
|
|
The HSSF File Format as implemented by
|
|
|
|
|
the HSSF API will be fully documented. No documentation will be
|
|
|
|
|
provided for features that are not supported by HSSF API that are
|
|
|
|
|
supported by the Excel 97 File Format. Care will be taken not to
|
|
|
|
|
infringe on any "legal stuff".
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
</div>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<div align="right">
|
|
|
|
|
<table cellspacing="0" cellpadding="2" border="0" width="99%">
|
|
|
|
|
<tr>
|
|
|
|
|
<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>6.4. HSSF API</b></font></font></td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
<br>
|
|
|
|
|
|
|
|
|
|
<p align="justify">
|
|
|
|
|
The HSSF API will be documented by
|
|
|
|
|
javadoc. A walkthrough of using the high level HSSF API shall be
|
|
|
|
|
provided. No documentation outside of the Javadoc shall be provided
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for the low level HSSF APIs.
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</p>
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</td>
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</tr>
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</table>
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</div>
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<br>
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<div align="right">
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<table cellspacing="0" cellpadding="2" border="0" width="99%">
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<tr>
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<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>6.5. HSSF Serializer</b></font></font></td>
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</tr>
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<tr>
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<td>
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<br>
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<p align="justify">
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The HSSF Serializer will be documented
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by javadoc.
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</p>
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</td>
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</tr>
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</table>
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</div>
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<br>
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<div align="right">
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<table cellspacing="0" cellpadding="2" border="0" width="99%">
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<tr>
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<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>6.6 HSSF Serializer Tag language</b></font></font></td>
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</tr>
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<tr>
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<td>
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<br>
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<p align="justify">
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The XML tag language along with
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function and usage shall be fully documented. Examples will be
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provided as well.
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</p>
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</td>
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</tr>
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</table>
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</div>
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<br>
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</td>
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</tr>
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</table>
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</div>
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<br>
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<div align="right">
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<table cellspacing="0" cellpadding="2" border="0" width="100%">
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<tr>
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<td bgcolor="#525D76"><font color="#ffffff" size="+1"><font face="Arial,sans-serif"><b>7. Terminology</b></font></font></td>
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</tr>
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<tr>
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<td>
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<br>
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<div align="right">
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<table cellspacing="0" cellpadding="2" border="0" width="99%">
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<tr>
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<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>7.1 Filesystem</b></font></font></td>
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</tr>
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<tr>
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<td>
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<br>
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<p align="justify">
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filesystem shall refer only to the POI formatted archive.
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</p>
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</td>
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</tr>
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</table>
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</div>
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<br>
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<div align="right">
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<table cellspacing="0" cellpadding="2" border="0" width="99%">
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<tr>
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<td bgcolor="#525D76"><font color="#ffffff" size="+0"><font face="Arial,sans-serif"><b>7.2 File</b></font></font></td>
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</tr>
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<tr>
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<td>
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<br>
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<p align="justify">
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file shall refer to the embedded data stream within a
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POI filesystem. This will be the actual embedded document.
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</p>
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</td>
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</tr>
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</table>
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</div>
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<br>
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</td>
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</tr>
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</table>
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</div>
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<br>
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</td>
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</tr>
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</table>
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<br>
|
2002-03-15 20:41:58 -05:00
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<table width="100%" border="0" cellspacing="0" cellpadding="0">
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<tbody>
|
2002-02-18 11:12:48 -05:00
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<tr>
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<td>
|
2002-03-15 20:41:58 -05:00
|
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<hr noshade="" size="1">
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</td>
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</tr>
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<tr>
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<td align="center"><i>Copyright © 2002 Apache Software Foundation</i></td>
|
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</tr>
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<tr>
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<td align="right" width="100%">
|
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<br>
|
2002-02-18 11:12:48 -05:00
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</td>
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</tr>
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<tr>
|
2002-03-15 20:41:58 -05:00
|
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<td align="right" width="100%"><a href="http://krysalis.org/"><img alt="Krysalis Logo" src="images/krysalis-compatible.png"></a><a href="http://xml.apache.org/cocoon/"><img alt="Cocoon Logo" src="images/built-with-cocoon.png"></a></td>
|
2002-02-18 11:12:48 -05:00
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</tr>
|
2002-03-15 20:41:58 -05:00
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</tbody>
|
2002-02-18 11:12:48 -05:00
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</table>
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</body>
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</html>
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