mirror of https://github.com/apache/poi.git
517 lines
10 KiB
HTML
517 lines
10 KiB
HTML
<html>
|
|
<head>
|
|
<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
|
|
<meta content="text/html; charset=ISO-8859-1">
|
|
<title>HSSF Use Cases</title>
|
|
<style type="text/css">
|
|
body { background-color: white; font-size: normal; color: black ; }
|
|
a { color: #525d76; }
|
|
a.black { color: #000000;}
|
|
table {border-width: 0; width: 100%}
|
|
table.centered {text-align: center}
|
|
table.title {text-align: center; width: 80%}
|
|
img{border-width: 0;}
|
|
span.s1 {font-family: Helvetica, Arial, sans-serif; font-weight: bold; color: #000000; }
|
|
span.s1_white { font-family: Helvetica, Arial, sans-serif; font-weight: bold; color: #ffffff; }
|
|
span.title {font-family: Helvetica, Arial, sans-serif; font-weight: bold; color: #000000; }
|
|
span.c1 {color: #000000; font-family: Helvetica, Arial, sans-serif}
|
|
tr.left {text-align: left}
|
|
hr { width: 100%; size: 2}
|
|
</style>
|
|
</head>
|
|
<body>
|
|
<table width="100%" cellspacing="0" cellpadding="0" border="0">
|
|
<tr>
|
|
<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>
|
|
</tr>
|
|
<tr>
|
|
<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>
|
|
</tr>
|
|
<tr>
|
|
<td height="8"></td>
|
|
</tr>
|
|
</table>
|
|
<table border="0" cellpadding="0" cellspacing="0" width="100%">
|
|
<tr>
|
|
<td width="1%">
|
|
<br>
|
|
</td><td nowrap="1" valign="top" width="14%">
|
|
<br>
|
|
<span class="s1">Navigation</span>
|
|
<br>
|
|
<a class="s1" href="../index.html">Main</a>
|
|
<br>
|
|
<br>
|
|
<span class="s1">HSSF</span>
|
|
<br>
|
|
<a class="s1" href="how-to.html">HOWTO</a>
|
|
<br>
|
|
<a class="s1" href="use-case.html">Use Case</a>
|
|
<br>
|
|
<a class="s1" href="diagrams.html">Pictorial Docs</a>
|
|
<br>
|
|
<br>
|
|
<span class="s1">Contributer's Guide</span>
|
|
<br>
|
|
<a class="s1" href="record-generator.html">Record Generator</a>
|
|
<br>
|
|
</td><td width="1%">
|
|
<br>
|
|
</td><td align="left" valign="top" width="*">
|
|
<title>HSSF Use Cases</title>
|
|
<table width="100%" align="center" class="centered">
|
|
<tbody>
|
|
<tr>
|
|
<td align="center">
|
|
<table border="0" cellpadding="1" cellspacing="0" class="title">
|
|
<tbody>
|
|
<tr>
|
|
<td bgcolor="#525d76">
|
|
<table width="100%" border="0" cellpadding="2" cellspacing="0" class="centered">
|
|
<tbody>
|
|
<tr>
|
|
<td bgcolor="#f3dd61"><span class="title">HSSF Use Cases</span></td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<font size="-2" color="#000000">
|
|
<p>
|
|
<a href="mailto:"></a>
|
|
</p>
|
|
</font>
|
|
<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>HSSF Use Cases</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>Use Case 1: Read existing HSSF</b></font></font></td>
|
|
</tr>
|
|
<tr>
|
|
<td>
|
|
<br>
|
|
|
|
|
|
<p align="justify">
|
|
<em>Primary Actor:</em> HSSF client</p>
|
|
|
|
<p align="justify">
|
|
<em>Scope:</em> HSSF</p>
|
|
|
|
<p align="justify">
|
|
<em>Level:</em> Summary</p>
|
|
|
|
<p align="justify">
|
|
<em>Stakeholders and Interests:</em>
|
|
</p>
|
|
|
|
<ul>
|
|
|
|
<li>HSSF client- wants to read content
|
|
of HSSF file</li>
|
|
|
|
<li>HSSF - understands HSSF file</li>
|
|
|
|
<li>POIFS - understands underlying POI
|
|
file system</li>
|
|
|
|
</ul>
|
|
|
|
<p align="justify">
|
|
<em>Precondition:</em> None</p>
|
|
|
|
<p align="justify">
|
|
<em>Minimal Guarantee:</em> None</p>
|
|
|
|
<p align="justify">
|
|
<em>Main Success Guarantee:</em>
|
|
</p>
|
|
|
|
<ol>
|
|
|
|
<li>HSSF client requests HSSF to read
|
|
a HSSF file, providing an InputStream
|
|
containing HSSF file in question.</li>
|
|
|
|
<li>HSSF requests POIFS to read the HSSF
|
|
file, passing the InputStream
|
|
object to POIFS (POIFS use case 1, read existing file system)</li>
|
|
|
|
<li>HSSF reads the "Workbook"
|
|
file (use case 4, read workbook entry)</li>
|
|
|
|
</ol>
|
|
|
|
<p align="justify">
|
|
<em>Extensions:</em>
|
|
</p>
|
|
|
|
<p align="justify">2a. Exceptions
|
|
thrown by POIFS will be passed on to the HSSF client.</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>Use Case 2: Write HSSF file</b></font></font></td>
|
|
</tr>
|
|
<tr>
|
|
<td>
|
|
<br>
|
|
|
|
|
|
<p align="justify">
|
|
<em>Primary Actor:</em> HSSF client</p>
|
|
|
|
<p align="justify">
|
|
<em>Scope:</em> HSSF</p>
|
|
|
|
<p align="justify">
|
|
<em>Level:</em> Summary</p>
|
|
|
|
<p align="justify">
|
|
<em>Stakeholders and Interests:</em>
|
|
</p>
|
|
|
|
<ul>
|
|
|
|
<li>HSSF client- wants to write file
|
|
out.</li>
|
|
|
|
<li>HSSF - knows how to write file
|
|
out.</li>
|
|
|
|
<li>POIFS - knows how to write file
|
|
system out.</li>
|
|
|
|
</ul>
|
|
|
|
<p align="justify">
|
|
<em>Precondition:</em>
|
|
</p>
|
|
|
|
<ul>
|
|
|
|
<li>File has been
|
|
read (use case 1, read existing HSSF file) and subsequently modified
|
|
or file has been created (use case 3, create HSSF file)</li>
|
|
|
|
</ul>
|
|
|
|
<p align="justify">
|
|
<em>Minimal Guarantee:</em> None</p>
|
|
|
|
<p align="justify">
|
|
<em>Main Success Guarantee:</em>
|
|
</p>
|
|
|
|
<ol>
|
|
|
|
<li>HSSF client
|
|
provides an OutputStream to
|
|
write the file to.</li>
|
|
|
|
<li>HSSF writes
|
|
the "Workbook" to its associated POIFS file system (use case
|
|
5, write workbook entry)</li>
|
|
|
|
<li>HSSF
|
|
requests POIFS to write its file system out, using the OutputStream
|
|
obtained from the HSSF client (POIFS use case 2, write file system).</li>
|
|
|
|
</ol>
|
|
|
|
<p align="justify">
|
|
<em>Extensions:</em>
|
|
</p>
|
|
|
|
<p align="justify">3a. Exceptions
|
|
from POIFS are passed to the HSSF client.</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>Use Case 3:Create HSSF file</b></font></font></td>
|
|
</tr>
|
|
<tr>
|
|
<td>
|
|
<br>
|
|
|
|
|
|
<p align="justify">
|
|
<em>Primary Actor:</em> HSSF client</p>
|
|
|
|
<p align="justify">
|
|
<em>Scope:</em> HSSF</p>
|
|
|
|
<p align="justify">
|
|
|
|
<em>Level:</em> Summary</p>
|
|
|
|
<p align="justify">
|
|
<em>Stakeholders and Interests:</em>
|
|
</p>
|
|
|
|
<ul>
|
|
|
|
<li>HSSF client- wants to create a new
|
|
file.</li>
|
|
|
|
<li>HSSF - knows how to create a new
|
|
file.</li>
|
|
|
|
<li>POIFS - knows how to creat a new
|
|
file system.</li>
|
|
|
|
</ul>
|
|
|
|
<p align="justify">
|
|
<em>Precondition:</em>
|
|
</p>
|
|
|
|
<p align="justify">
|
|
<em>Minimal Guarantee:</em> None</p>
|
|
|
|
<p align="justify">
|
|
<em>Main Success Guarantee:</em>
|
|
</p>
|
|
|
|
<ol>
|
|
|
|
<li>HSSF requests
|
|
POIFS to create a new file system (POIFS use case 3, create new file
|
|
system)</li>
|
|
|
|
</ol>
|
|
|
|
<p align="justify">
|
|
<em>Extensions:</em>
|
|
None</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>Use Case 4: Read workbook entry</b></font></font></td>
|
|
</tr>
|
|
<tr>
|
|
<td>
|
|
<br>
|
|
|
|
<p align="justify">
|
|
<em>Primary Actor:</em> HSSF</p>
|
|
|
|
<p align="justify">
|
|
<em>Scope:</em> HSSF</p>
|
|
|
|
<p align="justify">
|
|
|
|
<em>Level:</em> Summary</p>
|
|
|
|
<p align="justify">
|
|
<em>Stakeholders and Interests:</em>
|
|
</p>
|
|
|
|
<ul>
|
|
|
|
<li>HSSF - knows how to read the
|
|
workbook entry</li>
|
|
|
|
<li>POIFS - knows how to manage the file
|
|
system.</li>
|
|
|
|
</ul>
|
|
|
|
<p align="justify">
|
|
<em>Precondition:</em>
|
|
</p>
|
|
|
|
<ul>
|
|
|
|
<li>The file
|
|
system has been read (use case 1, read existing HSSF file) or has
|
|
been created and written to (use case 3, create HSSF file system;
|
|
use case 5, write workbook entry).</li>
|
|
|
|
</ul>
|
|
|
|
<p align="justify">
|
|
<em>Minimal
|
|
Guarantee:</em> None</p>
|
|
|
|
<p align="justify">
|
|
<em>Main Success Guarantee:</em>
|
|
</p>
|
|
|
|
<ol>
|
|
|
|
<li>
|
|
HSSF requests POIFS for the "Workbook" file</li>
|
|
|
|
<li>POIFS returns
|
|
an InputStream for the file.</li>
|
|
|
|
<li>HSSF reads
|
|
from the InputStream provided by POIFS</li>
|
|
|
|
<li>HSSF closes
|
|
the InputStream provided by POIFS</li>
|
|
|
|
</ol>
|
|
|
|
<p align="justify">
|
|
<em>Extensions:</em>
|
|
</p>
|
|
|
|
<p align="justify">3a. Exceptions
|
|
thrown by POIFS will be passed on</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>Use Case 5: Write workbook entry</b></font></font></td>
|
|
</tr>
|
|
<tr>
|
|
<td>
|
|
<br>
|
|
|
|
|
|
|
|
<p align="justify">
|
|
<em>Primary Actor:</em> HSSF</p>
|
|
|
|
<p align="justify">
|
|
<em>Scope:</em> HSSF</p>
|
|
|
|
<p align="justify">
|
|
|
|
<em>Level:</em> Summary</p>
|
|
|
|
<p align="justify">
|
|
<em>Stakeholders and Interests:</em>
|
|
</p>
|
|
|
|
<ul>
|
|
|
|
<li>HSSF - knows how to manage the
|
|
write the workbook entry.</li>
|
|
|
|
<li>POIFS - knows how to manage the file
|
|
system.</li>
|
|
|
|
</ul>
|
|
|
|
<p align="justify">
|
|
<em>Precondition:</em>
|
|
|
|
</p>
|
|
|
|
<ul>
|
|
|
|
<li>Either an existing HSSF file has
|
|
been read (use case 1, read existing HSSF file) or an HSSF file has
|
|
been created (use case 3, create HSSF file).</li>
|
|
|
|
</ul>
|
|
|
|
<p align="justify">
|
|
<em>Minimal Guarantee:</em> None</p>
|
|
|
|
<p align="justify">
|
|
<em>Main Success Guarantee:</em>
|
|
</p>
|
|
|
|
<ol>
|
|
|
|
<li>HSSF
|
|
checks the POIFS file system directory for the "Workbook"
|
|
file (POIFS use case 8, read file system directory)</li>
|
|
|
|
<li>If "Workbook" is in the directory, HSSF requests POIFS to
|
|
replace it with the new workbook entry (POIFS use case 4, replace file
|
|
in file system). Otherwise, HSSF requests POIFS to write the new
|
|
workbook file, with the name "Workbook" (POIFS use case 6,
|
|
write new file to file system)</li>
|
|
|
|
</ol>
|
|
|
|
<p align="justify">
|
|
<em>Extensions:</em>None</p>
|
|
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
</div>
|
|
<br>
|
|
|
|
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
</div>
|
|
<br>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
<br>
|
|
<table width="100%" border="0" cellspacing="0" cellpadding="0">
|
|
<tbody>
|
|
<tr>
|
|
<td>
|
|
<hr noshade="" size="1">
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td align="center"><i>Copyright © 2002 Apache Software Foundation</i></td>
|
|
</tr>
|
|
<tr>
|
|
<td align="right" width="100%">
|
|
<br>
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td align="right" width="100%"><a href="http://krysalis.org/"><img alt="Krysalis Logo" src="images/krysalis-compatible.jpg"></a><a href="http://xml.apache.org/cocoon/"><img alt="Cocoon Logo" src="images/built-with-cocoon.gif"></a></td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
</body>
|
|
</html>
|