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database-connection-manager
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| author |
Daniele Nicolodi <nicolodi@science.unitn.it> |
| date |
Mon, 05 Dec 2011 16:20:06 +0100 (2011-12-05) |
| parents |
f0afece42f48 |
| children |
|
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<h1 class="title"><a name="f3-12899" id="f3-12899"></a>Connecting to an LTPDA Repository</h1>
<hr>
<p>
<p>
Connection to an LTPDA Repository is normally carried out as part of other processes. For example, when submitting an
object to the repository using the <tt>submit</tt> command, the user is prompted to login to the chosen repository.
</p>
<p>
It is also possible to connect to a repository using a script interface. The result is a connection object which can
be passed to other methods (for example, <tt>submit</tt>), thus allowing the construction of more automated procedures
for interacting with repositories.
</p>
<p>
To connect to a repository using the script interface, us the command <tt>utils.jmysql.connect</tt>. It takes the following input arguments:
<table border="1" cellpadding="2" width="30%" bgcolor="#DDDDDD">
<tr valign="top">
<td><tt>hostname</tt></td><td>A hostname for the repository</td>
</tr>
<tr valign="top">
<td><tt>dbname</tt></td><td>A database name to connect to</td>
</tr>
<tr valign="top">
<td><tt>username</tt></td><td>[optional] A username to connect with</td>
</tr>
<tr valign="top">
<td><tt>username</tt></td><td>[optional] A password to connect with</td>
</tr>
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<br> If you don't supply them as input arguments, you will then be prompted for a
valid username and password.
<br>
The result is a <tt>mpipeline.repository.RepositoryConnection</tt> object which can be further used to interact with the repository.
<br>
To disconnect from the server, use the <tt>closeConnection</tt> method of the <tt>mpipeline.repository.RepositoryConnection</tt> class:
<div class="fragment"><pre>
>> conn.closeConnection
</pre></div>
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