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| author | Daniele Nicolodi <nicolodi@science.unitn.it> |
|---|---|
| date | Mon, 05 Dec 2011 18:04:03 +0100 |
| parents | f0afece42f48 |
| children |
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd"> <html lang="en"> <head> <meta name="generator" content= "HTML Tidy for Mac OS X (vers 1st December 2004), see www.w3.org"> <meta http-equiv="Content-Type" content= "text/html; charset=us-ascii"> <title>Submitting LTPDA objects to a repository (LTPDA Toolbox)</title> <link rel="stylesheet" href="docstyle.css" type="text/css"> <meta name="generator" content="DocBook XSL Stylesheets V1.52.2"> <meta name="description" content= "Presents an overview of the features, system requirements, and starting the toolbox."> </head> <body> <a name="top_of_page" id="top_of_page"></a> <p style="font-size:1px;"> </p> <table class="nav" summary="Navigation aid" border="0" width= "100%" cellpadding="0" cellspacing="0"> <tr> <td valign="baseline"><b>LTPDA Toolbox</b></td><td><a href="../helptoc.html">contents</a></td> <td valign="baseline" align="right"><a href= "repo_connect.html"><img src="b_prev.gif" border="0" align= "bottom" alt="Connecting to an LTPDA Repository"></a> <a href= "repo_explore.html"><img src="b_next.gif" border="0" align= "bottom" alt="Exploring an LTPDA Repository"></a></td> </tr> </table> <h1 class="title"><a name="f3-12899" id="f3-12899"></a>Submitting LTPDA objects to a repository</h1> <hr> <p> <p> Any of the <it>user</it> objects can be submitted to an LTPDA repository </p> <p> There are three different methods which submit/update object(s) to the repository: <ul> <li><h3>submit</h3> Submits the given collection of objects to an LTPDA Repository. If multiple objects are submitted together, a corresponding collection entry will be made. The objects are stored as a XML representation <b>and</b> if possible a binary representation (see bsubmit).</li> <li><h3>bsubmit</h3> Submits the given collection of objects to an LTPDA Repository. If multiple objects are submitted together, a corresponding collection entry will be made. The objects are stored <b>only</b> as a binary representation.<br /> In order to retrieve this object by calling a constructor it is necessary to set the key <tt>'BINARY'</tt> to 'yes' because the XML representation doesn't exist. For example the AO constructor <a href="matlab:web(ao.getInfo('ao', 'from repository').tohtml, '-helpbrowser')">'From Repository'</a> </li> <li><h3>update</h3> Updates the specified object with a new object. </li> </ul> </p> <h2>The submission process</h2> <p> When an object is submitted, the following steps are taken:<br /> <ol> <li>The <tt>userid</tt> of the user connecting is retrieved from the <it>Users</it> table of the repository</li> <li>For each object to be submitted: <ol> <li>The object to be submitted is checked to be one of the types listed above</li> <li>The <tt>name</tt>, <tt>created</tt>, and <tt>version</tt> fields are read from the object</li> <li>The object is converted to an XML text string</li> <li>An MD5 hash sum is computed for the XML string</li> <li>The XML string and the hash code are inserted in to the <tt>objs</tt> table</li> <li>The automatically assigned ID of the object is retrieved from the <tt>objs</tt> table</li> <li>An attempt is made to create a binary representation of the object (.MAT). If this is possible, the binary data is inserted in the <tt>bobjs</tt> table.</li> <li>Various pieces of meta-data (object name, object type, created time, client IP address, <i>etc.</i>) are submitted to the <tt>objmeta</tt> table</li> <li>Additional meta-data is entered into the table matching the object class (<tt>ao</tt>, <tt>tsdata</tt>, <i>etc.</i>)</li> <li>An 'in' entry is made in the <tt>transaction</tt> table recording the user ID and the object ID</li> </ol> </li> <li>A entry is then made in the <tt>collections</tt> table, even if this is a single object submission</li> <li>The object IDs and the collection ID are returned to the user</li> </ol> </p> <br /> <h2>Submitting objects</h2> <p> Objects can be submitted using the command <tt>submit</tt>. This command takes at least two inputs: <table border="1" cellpadding="2" width="30%" bgcolor="#DDDDDD"> <tr valign="top"> <td><tt>object</tt></td><td>The object(s) to submit</td> </tr> <tr valign="top"> <td><tt>pl</tt></td><td>A plist containing various pieces of information (see below)</td> </tr> </table> </p> <p> The <tt>plist</tt> details can be found at: <a href="matlab:web(ltpda_uo.getInfo('submit').tohtml, '-helpbrowser')">Parameter Sets</a> </p> <p> The following example script connects to a repository and submits an AO: <div class="fragment"><pre> <span class="comment">% Connect to a repository</span> conn = utils.jmysql.connect(<span class="string">'localhost'</span>, <span class="string">'ltpda_test'</span>); <span class="comment">% Load the AO</span> a = ao(<span class="string">'result.xml'</span>); <span class="comment">% Build an information plist</span> pl = plist; pl.append(<span class="string">'conn'</span>, conn); pl.append(<span class="string">'experiment title'</span>, <span class="string">'Interferometer noise'</span>); pl.append(<span class="string">'experiment description'</span>, <span class="string">'Spectral estimation of interferometer output signal'</span>); pl.append(<span class="string">'analysis description'</span>, <span class="string">'Spectrum of the recorded signal'</span>); pl.append(<span class="string">'quantity'</span>, <span class="string">'photodiode output'</span>); pl.append(<span class="string">'keywords'</span>, <span class="string">'interferometer, noise, spectrum'</span>); pl.append(<span class="string">'reference ids'</span>, <span class="string">''</span>); pl.append(<span class="string">'additional comments'</span>, <span class="string">'none'</span>); pl.append(<span class="string">'additional authors'</span>, <span class="string">'no one'</span>); <span class="comment">% Submit the AO</span> [ids, cid] = submit(a, pl); <span class="comment">% Close the connection</span> conn.closeConnection </pre></div> The ID assigned to the submitted object is contained in the first output of the <tt>submit</tt> function: <div class="fragment"><pre> <span class="comment">% Inspect the object ID</span> disp(ids) 212 </pre></div> If the <tt>plist</tt> contains sufficient information, it is possible to overide the appearance of the 'submission' dialog by giving the key/value pair: 'no dialog', <tt>true</tt>. </p> <h2>Submitting collections</h2> <p> Collections of LTPDA objects can also be submitted. Here a collection is defined as a group of objects submitted at the same time. In this way, a single information structure describing the collection is assigned to all the objects. The collection is just a virtual object; it is defined by a list of object IDs in the database. </p> </p> <br> <br> <table class="nav" summary="Navigation aid" border="0" width= "100%" cellpadding="0" cellspacing="0"> <tr valign="top"> <td align="left" width="20"><a href="repo_connect.html"><img src= "b_prev.gif" border="0" align="bottom" alt= "Connecting to an LTPDA Repository"></a> </td> <td align="left">Connecting to an LTPDA Repository</td> <td> </td> <td align="right">Exploring an LTPDA Repository</td> <td align="right" width="20"><a href= "repo_explore.html"><img src="b_next.gif" border="0" align= "bottom" alt="Exploring an LTPDA Repository"></a></td> </tr> </table><br> <p class="copy">©LTP Team</p> </body> </html>