topic Re: JCR & versioning in Alfresco Archive

JCR & versioning

anweber — Thu, 20 Apr 2006 08:26:10 GMT

Hi, I have a little problem when I try to create a node with "versionable" aspect. When I look at the created node with the webClient, I see it as checked-out (without the working node) but I want to obtain a checked-in node.There is an extract of my code : Node document = folder.addNo

Re: JCR & versioning

davidc — Fri, 21 Apr 2006 09:49:42 GMT

Hi,

The pattern of code you have looks fine.

The JCR checkout/checkin calls do not translate directly to Web Client checkout/checkin, so it's slightly odd that the Web Client believes it's checked-out.

Using the node browser, can you navigate to the node in question, and provide a dump of that page. It will provide the raw state of the node, which should help diagnose.

Re: JCR & versioning

anweber — Mon, 24 Apr 2006 06:07:43 GMT

There is the code returned by the node browser (sorry to send it to you like this but I do not know how to attach a file in this post) :


<html><head><title>Alfresco Node Browser</title></head><body>
<script language="JavaScript1.2" src="/alfresco/scripts/menu.js"></script>
<script language="JavaScript1.2" src="/alfresco/scripts/webdav.js"></script>
<link rel="stylesheet" href="/alfresco/css/main.css" TYPE="text/css">
<form id="node-browser-titlebar" name="node-browser-titlebar" method="post" action="/alfresco/faces/jsp/admin/node-browser.jsp" enctype="application/x-www-form-urlencoded">
<table width="100%">
<tr>
<td>
<img src="/alfresco/images/logo/AlfrescoLogo32.png" alt="Alfresco" />
</td>
<td>
<nobr><span class="mainTitle">Alfresco Node Browser</span></nobr>
</td>
<td width="100%" align="right">
<input id="node-browser-titlebar:_id2" name="node-browser-titlebar:_id2" type="submit" value="Close" onclick="clear_node_2Dbrowser_2Dtitlebar();" />
</td>
</tr>
</table>

<input type="hidden" name="node-browser-titlebar_SUBMIT" value="1" /><input type="hidden" name="node-browser-titlebar:_link_hidden_" /><script type="text/javascript"><!–
function clear_node_2Dbrowser_2Dtitlebar() {
  var f = document.forms['node-browser-titlebar'];
  f.elements['node-browser-titlebar:_link_hidden_'].value='';
  f.target='';
}
clear_node_2Dbrowser_2Dtitlebar();
//–></script></form>
<br>
<a href="#" onclick="clear_linkDummyForm();document.forms['linkDummyForm'].elements['linkDummyForm:_link_hidden_'].value='selectStores';if(document.forms['linkDummyForm'].onsubmit){if(document.forms['linkDummyForm'].onsubmit()) document.forms['linkDummyForm'].submit();}else{document.forms['linkDummyForm'].submit();}return false;" id="selectStores"><span class="mainSubText">Stores</span></a>
<br>
<br>

<span class="mainTitle">Search</span>

<form id="searchForm" name="searchForm" method="post" action="/alfresco/faces/jsp/admin/node-browser.jsp" enctype="application/x-www-form-urlencoded">
<table>
<tr>
<td>


<select id="searchForm:queryLanguage" name="searchForm:queryLanguage" size="1">   <option value="noderef">noderef</option>   <option value="xpath">xpath</option>   <option value="lucene">lucene</option>   <option value="selectnodes">selectnodes</option></select>
</td>
<td>
<input id="searchForm:query" name="searchForm:query" type="text" value="" size="100" />
</td>
<td>
<input id="searchForm:submitSearch" name="searchForm:submitSearch" type="submit" value="Search" onclick="clear_searchForm();" />
</td>
</tr>
<tr>
<td></td>
<td>

</td>
<td></td>
</tr>
</table>
<input type="hidden" name="searchForm_SUBMIT" value="1" /><input type="hidden" name="searchForm:_link_hidden_" /><script type="text/javascript"><!–
function clear_searchForm() {
  var f = document.forms['searchForm'];
  f.elements['searchForm:_link_hidden_'].value='';
  f.target='';
}
clear_searchForm();
//–></script></form>

<span class="mainTitle">Node Identifier</span>

<table>
<tr>
<td><nobr><b>Primary Path:</b></nobr></td><td>
<nobr>


<a href="#" onclick="clear_linkDummyForm();document.forms['linkDummyForm'].elements['linkDummyForm:_link_hidden_'].value='selectPrimaryPath';if(document.forms['linkDummyForm'].onsubmit){if(document.forms['linkDummyForm'].onsubmit()) document.forms['linkDummyForm'].submit();}else{document.forms['linkDummyForm'].submit();}return false;" id="selectPrimaryPath"><span id="primaryPath">/{http://www.alfresco.org/model/application/1.0}company_home/{http://www.alfresco.org/model/content/1.0}aweTestFolder/{http://www.alfresco.org/model/content/1.0}aweTestDoc</span></a>
</nobr>
</td>
</tr>
<tr>
<td><b>Reference:</b></td><td><span id="nodeRef">workspace://SpacesStore/777683bc-d044-11da-b480-29c273d29d12</span></td>
</tr>
<tr>
<td><b>Type:</b></td><td><span id="nodeType">{custom.model}ep_doc</span></td>
</tr>
<tr>
<td><b>Parent:</b></td>
<td>


<a href="#" onclick="clear_linkDummyForm();document.forms['linkDummyForm'].elements['linkDummyForm:_link_hidden_'].value='selectPrimaryParent';if(document.forms['linkDummyForm'].onsubmit){if(document.forms['linkDummyForm'].onsubmit()) document.forms['linkDummyForm'].submit();}else{document.forms['linkDummyForm'].submit();}return false;" id="selectPrimaryParent"><span id="primaryParent">workspace://SpacesStore/774ba32a-d044-11da-b480-29c273d29d12</span></a>
</td>
</tr>
</table>

<br>
<span class="mainTitle">Properties</span>


<table id="properties" border="1">
<thead>
<tr><th>Name</th><th>Value</th><th>Property Type</th><th>Value Type</th><th>Residual</th></tr></thead>
<tbody id="properties:tbody_element">
<tr><td>{http://www.alfresco.org/model/content/1.0}description</td><td>
<table id="properties_0:values" border="0" cellspacing="0">
<tbody id="properties_0:values:tbody_element">
<tr><td>AWE test EP document, created with JCR</td></tr></tbody></table>
</td><td>{http://www.alfresco.org/model/dictionary/1.0}text</td><td>
<table id="properties_0:valueTypes" border="0" cellspacing="0">
<tbody id="properties_0:valueTypes:tbody_element">
<tr><td></td></tr></tbody></table>
</td><td>false</td></tr>
<tr><td>{http://www.alfresco.org/model/system/1.0}node-uuid</td><td>
<table id="properties_1:values" border="0" cellspacing="0">
<tbody id="properties_1:values:tbody_element">
<tr><td>777683bc-d044-11da-b480-29c273d29d12</td></tr></tbody></table>
</td><td>{http://www.alfresco.org/model/dictionary/1.0}text</td><td>
<table id="properties_1:valueTypes" border="0" cellspacing="0">
<tbody id="properties_1:valueTypes:tbody_element">
<tr><td></td></tr></tbody></table>
</td><td>false</td></tr>
<tr><td>{http://www.alfresco.org/model/content/1.0}lockType</td><td>
<table id="properties_2:values" border="0" cellspacing="0">
<tbody id="properties_2:values:tbody_element">
<tr><td>READ_ONLY_LOCK</td></tr></tbody></table>
</td><td>{http://www.alfresco.org/model/dictionary/1.0}text</td><td>
<table id="properties_2:valueTypes" border="0" cellspacing="0">
<tbody id="properties_2:valueTypes:tbody_element">
<tr><td></td></tr></tbody></table>
</td><td>false</td></tr>
<tr><td>{http://www.alfresco.org/model/content/1.0}content</td><td>
<table id="properties_3:values" border="0" cellspacing="0">
<tbody id="properties_3:values:tbody_element">
<tr><td><a id="properties_3:values_0:_id15" href="/alfresco/download/direct/workspace/SpacesStore/777683bc-d044-11da-b480-29c273d29d12/file.bin?property={http://www.alfresco.org/model/content/1.0}content" target="_blank">contentUrl=store://2006/4/20/10/777ff99d-d044-11da-b480-29c273d29d12.bin|mimetype=application/octet-stream|size=18|encoding=UTF-8</a></td></tr></tbody></table>
</td><td>{http://www.alfresco.org/model/dictionary/1.0}content</td><td>
<table id="properties_3:valueTypes" border="0" cellspacing="0">
<tbody id="properties_3:valueTypes:tbody_element">
<tr><td></td></tr></tbody></table>
</td><td>false</td></tr>
<tr><td>{http://www.alfresco.org/model/content/1.0}versionLabel</td><td>
<table id="properties_4:values" border="0" cellspacing="0">
<tbody id="properties_4:values:tbody_element">
<tr><td>1.0</td></tr></tbody></table>
</td><td>{http://www.alfresco.org/model/dictionary/1.0}text</td><td>
<table id="properties_4:valueTypes" border="0" cellspacing="0">
<tbody id="properties_4:valueTypes:tbody_element">
<tr><td></td></tr></tbody></table>
</td><td>false</td></tr>
<tr><td>{http://www.alfresco.org/model/content/1.0}title</td><td>
<table id="properties_5:values" border="0" cellspacing="0">
<tbody id="properties_5:values:tbody_element">
<tr><td>AWE's document</td></tr></tbody></table>
</td><td>{http://www.alfresco.org/model/dictionary/1.0}text</td><td>
<table id="properties_5:valueTypes" border="0" cellspacing="0">
<tbody id="properties_5:valueTypes:tbody_element">
<tr><td></td></tr></tbody></table>
</td><td>false</td></tr>
<tr><td>{custom.model}language</td><td>
<table id="properties_6:values" border="0" cellspacing="0">
<tbody id="properties_6:values:tbody_element">
<tr><td>EN</td></tr></tbody></table>
</td><td>{http://www.alfresco.org/model/dictionary/1.0}text</td><td>
<table id="properties_6:valueTypes" border="0" cellspacing="0">
<tbody id="properties_6:valueTypes:tbody_element">
<tr><td></td></tr></tbody></table>
</td><td>false</td></tr>
<tr><td>{http://www.alfresco.org/model/content/1.0}lockOwner</td><td>
<table id="properties_7:values" border="0" cellspacing="0">
<tbody id="properties_7:values:tbody_element">
<tr><td>admin</td></tr></tbody></table>
</td><td>{http://www.alfresco.org/model/dictionary/1.0}text</td><td>
<table id="properties_7:valueTypes" border="0" cellspacing="0">
<tbody id="properties_7:valueTypes:tbody_element">
<tr><td></td></tr></tbody></table>
</td><td>false</td></tr>
<tr><td>{http://www.alfresco.org/model/content/1.0}created</td><td>
<table id="properties_8:values" border="0" cellspacing="0">
<tbody id="properties_8:values:tbody_element">
<tr><td>Thu Apr 20 10:05:44 CEST 2006</td></tr></tbody></table>
</td><td>{http://www.alfresco.org/model/dictionary/1.0}datetime</td><td>
<table id="properties_8:valueTypes" border="0" cellspacing="0">
<tbody id="properties_8:valueTypes:tbody_element">
<tr><td></td></tr></tbody></table>
</td><td>false</td></tr>
<tr><td>{http://www.alfresco.org/model/content/1.0}modifier</td><td>
<table id="properties_9:values" border="0" cellspacing="0">
<tbody id="properties_9:values:tbody_element">
<tr><td>admin</td></tr></tbody></table>
</td><td>{http://www.alfresco.org/model/dictionary/1.0}text</td><td>
<table id="properties_9:valueTypes" border="0" cellspacing="0">
<tbody id="properties_9:valueTypes:tbody_element">
<tr><td></td></tr></tbody></table>
</td><td>false</td></tr>
<tr><td>{http://www.alfresco.org/model/content/1.0}expiryDate</td><td>
<table id="properties_10:values" border="0" cellspacing="0">
<tbody id="properties_10:values:tbody_element">
<tr><td><span class="errorMessage">–null–</span></td></tr></tbody></table>
</td><td>{http://www.alfresco.org/model/dictionary/1.0}date</td><td>
<table id="properties_10:valueTypes" border="0" cellspacing="0">
<tbody id="properties_10:valueTypes:tbody_element">
<tr><td></td></tr></tbody></table>
</td><td>false</td></tr>
<tr><td>{http://www.alfresco.org/model/content/1.0}initialVersion</td><td>
<table id="properties_11:values" border="0" cellspacing="0">
<tbody id="properties_11:values:tbody_element">
<tr><td>false</td></tr></tbody></table>
</td><td>{http://www.alfresco.org/model/dictionary/1.0}boolean</td><td>
<table id="properties_11:valueTypes" border="0" cellspacing="0">
<tbody id="properties_11:valueTypes:tbody_element">
<tr><td></td></tr></tbody></table>
</td><td>false</td></tr>
<tr><td>{http://www.alfresco.org/model/content/1.0}modified</td><td>
<table id="properties_12:values" border="0" cellspacing="0">
<tbody id="properties_12:values:tbody_element">
<tr><td>Thu Apr 20 10:05:45 CEST 2006</td></tr></tbody></table>
</td><td>{http://www.alfresco.org/model/dictionary/1.0}datetime</td><td>
<table id="properties_12:valueTypes" border="0" cellspacing="0">
<tbody id="properties_12:valueTypes:tbody_element">
<tr><td></td></tr></tbody></table>
</td><td>false</td></tr>
<tr><td>{http://www.alfresco.org/model/content/1.0}creator</td><td>
<table id="properties_13:values" border="0" cellspacing="0">
<tbody id="properties_13:values:tbody_element">
<tr><td>admin</td></tr></tbody></table>
</td><td>{http://www.alfresco.org/model/dictionary/1.0}text</td><td>
<table id="properties_13:valueTypes" border="0" cellspacing="0">
<tbody id="properties_13:valueTypes:tbody_element">
<tr><td></td></tr></tbody></table>
</td><td>false</td></tr>
<tr><td>{http://www.alfresco.org/model/system/1.0}store-protocol</td><td>
<table id="properties_14:values" border="0" cellspacing="0">
<tbody id="properties_14:values:tbody_element">
<tr><td>workspace</td></tr></tbody></table>
</td><td>{http://www.alfresco.org/model/dictionary/1.0}text</td><td>
<table id="properties_14:valueTypes" border="0" cellspacing="0">
<tbody id="properties_14:valueTypes:tbody_element">
<tr><td></td></tr></tbody></table>
</td><td>false</td></tr>
<tr><td>{http://www.alfresco.org/model/content/1.0}autoVersion</td><td>
<table id="properties_15:values" border="0" cellspacing="0">
<tbody id="properties_15:values:tbody_element">
<tr><td>false</td></tr></tbody></table>
</td><td>{http://www.alfresco.org/model/dictionary/1.0}boolean</td><td>
<table id="properties_15:valueTypes" border="0" cellspacing="0">
<tbody id="properties_15:valueTypes:tbody_element">
<tr><td></td></tr></tbody></table>
</td><td>false</td></tr>
<tr><td>{http://www.alfresco.org/model/content/1.0}name</td><td>
<table id="properties_16:values" border="0" cellspacing="0">
<tbody id="properties_16:values:tbody_element">
<tr><td>AWE test EP concrete doc</td></tr></tbody></table>
</td><td>{http://www.alfresco.org/model/dictionary/1.0}text</td><td>
<table id="properties_16:valueTypes" border="0" cellspacing="0">
<tbody id="properties_16:valueTypes:tbody_element">
<tr><td></td></tr></tbody></table>
</td><td>false</td></tr>
<tr><td>{http://www.alfresco.org/model/system/1.0}store-identifier</td><td>
<table id="properties_17:values" border="0" cellspacing="0">
<tbody id="properties_17:values:tbody_element">
<tr><td>SpacesStore</td></tr></tbody></table>
</td><td>{http://www.alfresco.org/model/dictionary/1.0}text</td><td>
<table id="properties_17:valueTypes" border="0" cellspacing="0">
<tbody id="properties_17:valueTypes:tbody_element">
<tr><td></td></tr></tbody></table>
</td><td>false</td></tr></tbody></table>


<br>
<span class="mainTitle">Aspects</span>


<table id="aspects">
<tbody id="aspects:tbody_element">
<tr><td>{http://www.alfresco.org/model/content/1.0}auditable</td></tr>
<tr><td>{http://www.alfresco.org/model/content/1.0}lockable</td></tr>
<tr><td>{http://www.alfresco.org/model/system/1.0}referenceable</td></tr>
<tr><td>{http://www.alfresco.org/model/content/1.0}versionable</td></tr></tbody></table>


<br>
<span class="mainTitle">Permissions</span>

<table>
<tr>
<td><b>Inherit:</b></td><td><span id="inheritPermissions">true</span></td>
</tr>
</table>

<br>

<table id="permissions" border="1">
<thead>
<tr><th>Assigned Permission</th><th>To Authority</th><th>Access</th></tr></thead>
<tbody id="permissions:tbody_element"></tbody></table>


<br>
<span class="mainTitle">Children</span>


<table id="children" border="1">
<thead>
<tr><th>Child Name</th><th>Child Node</th><th>Primary</th><th>Association Type</th><th>Index</th></tr></thead>
<tbody id="children:tbody_element"></tbody></table>


<br>
<span class="mainTitle">Associations</span>


<table id="assocs" border="1">
<thead>
<tr><th>To Node</th><th>Association Type</th></tr></thead>
<tbody id="assocs:tbody_element"></tbody></table>


<br>
<span class="mainTitle">Parents</span>


<table id="parents" border="1">
<thead>
<tr><th>Child Name</th><th>Parent Node</th><th>Primary</th><th>Association Type</th></tr></thead>
<tbody id="parents:tbody_element">
<tr><td>{http://www.alfresco.org/model/content/1.0}aweTestDoc</td><td><a href="#" onclick="clear_linkDummyForm();document.forms['linkDummyForm'].elements['linkDummyForm:_link_hidden_'].value='parents_0:selectParent';if(document.forms['linkDummyForm'].onsubmit){if(document.forms['linkDummyForm'].onsubmit()) document.forms['linkDummyForm'].submit();}else{document.forms['linkDummyForm'].submit();}return false;" id="parents_0:selectParent">workspace://SpacesStore/774ba32a-d044-11da-b480-29c273d29d12</a></td><td>true</td><td>{http://www.alfresco.org/model/content/1.0}contains</td></tr></tbody></table>


<br>
<form id="linkDummyForm" name="linkDummyForm" style="display:inline" method="post" action="/alfresco/faces/jsp/admin/node-browser.jsp"><input type="hidden" name="linkDummyForm:_link_hidden_" /><script type="text/javascript"><!–
function clear_linkDummyForm() {
  var f = document.forms['linkDummyForm'];
  f.elements['linkDummyForm:_link_hidden_'].value='';
  f.target='';
}
clear_linkDummyForm();
//–></script></form>

<center><a href='http://www.alfresco.com'><img border=0 alt='' title='Content managed by Alfresco' align=absmiddle src='/alfresco/images/logo/alfresco_logo.gif'></a> <span style='font-family:Arial,Helvetica,sans-serif;font-size:10px'>Alfresco Software Inc. ? 2005 All rights reserved.</span></center>
</body></html>

‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Re: JCR & versioning

steel — Mon, 12 Jun 2006 23:07:14 GMT

I am having the same problem.

Re: JCR & versioning

davidc — Tue, 13 Jun 2006 08:44:13 GMT

I've raised the following JIRA Issue http://www.alfresco.org/jira/browse/AR-659.

Could you add any further details on how to reproduce to the JIRA issue.

Thanks.

Re: JCR & versioning

steel — Tue, 13 Jun 2006 15:34:28 GMT

My code is:

  documentNode.checkout();
            documentNode.setProperty("cm:content", version.getContent());
            Version newVersion = documentNode.checkin();‍‍‍

I will investigate some more. On another note can you provide some details on how the lightweightversion store works?

I am migrating some documents over from another type of repository, and would like to just create the version nodes myself rather than doing a checkin/checkout each time for the new version as I have specific version labels as well.

thanks.

Re: JCR & versioning

steel — Tue, 13 Jun 2006 15:36:43 GMT

I've raised the following JIRA Issue http://www.alfresco.org/jira/browse/AR-659.

Could you add any further details on how to reproduce to the JIRA issue.

Thanks.

Link doesn't work.

Re: JCR & versioning

davidc — Tue, 13 Jun 2006 17:17:45 GMT

Oops, there's a trailing full stop in the URL.

Try this…

http://www.alfresco.org/jira/browse/AR-659

Re: JCR & versioning

davidc — Tue, 13 Jun 2006 18:12:35 GMT

The problem here is that the JCR API is following the versioning semantics of the JSR-170 specification, which are different to those exposed in the Alfresco Web Client. When a JSR-170 node supports mix:versionable, it is locked whilst checked-in and unlocked whilst checked-out. Essentially, you are seeing the checked-in item in the Web Client, but it's locked, which is why there's a lock icon and no associated working copy.

The workaround for Alfresco Web Client compatibility is to assign the cm:versionable aspect via the JSR-170 api, and then use the Alfresco native api calls on the COCIService to checkin/out. This will provide the same behaviour as exhibited in the web client.

It's possible to mix JCR/Alfresco native api calls as described in http://wiki.alfresco.com/wiki/Introducing_the_Alfresco_Java_Content_Repository_API#Mixing_JCR_and_Alfresco_APIs.

Re: JCR & versioning

davidc — Tue, 13 Jun 2006 18:15:49 GMT

> I am migrating some documents over from another type of repository, and would like to just create the version nodes myself rather than doing a checkin/checkout each time for the new version as I have specific version labels as well.

You might be able to use the Alfresco VersionService interface directly to create versions of a node. I think you can set the version label too.

An alternative approach is to use the Importer to populate the version store directly. For an example of the xml, you can perform a 'Complete Repository Export' in v1.3 and view the contents of the file 'xxx_version.acp'.

Re: JCR & versioning

steel — Tue, 13 Jun 2006 19:13:00 GMT

> I am migrating some documents over from another type of repository, and would like to just create the version nodes myself rather than doing a checkin/checkout each time for the new version as I have specific version labels as well.

You might be able to use the Alfresco VersionService interface directly to create versions of a node. I think you can set the version label too.

An alternative approach is to use the Importer to populate the version store directly. For an example of the xml, you can perform a 'Complete Repository Export' in v1.3 and view the contents of the file 'xxx_version.acp'.

All of my operations are operating over JCR-RMI for the session transaction support so I do not have access to the versionservice nor the COCIservice. If I use the Webservice interface along with JCR-RMI would the web service calls belong to the same JCR-RMI session transaction or would they be separate?

Re: JCR & versioning

steel — Tue, 13 Jun 2006 21:07:57 GMT

The problem here is that the JCR API is following the versioning semantics of the JSR-170 specification, which are different to those exposed in the Alfresco Web Client. When a JSR-170 node supports mix:versionable, it is locked whilst checked-in and unlocked whilst checked-out. Essentially, you are seeing the checked-in item in the Web Client, but it's locked, which is why there's a lock icon and no associated working copy.

The workaround for Alfresco Web Client compatibility is to assign the cm:versionable aspect via the JSR-170 api, and then use the Alfresco native api calls on the COCIService to checkin/out. This will provide the same behaviour as exhibited in the web client.

It's possible to mix JCR/Alfresco native api calls as described in http://wiki.alfresco.com/wiki/Introducing_the_Alfresco_Java_Content_Repository_API#Mixing_JCR_and_Alfresco_APIs.

I found that doing a checkout() after the checkin() will resolve this issue. I am taking this route as I am connecting via JCR-RMI and to keep everything in the same session transaction.

Re: JCR & versioning

jharrop — Mon, 21 Sep 2009 06:30:14 GMT

Hi David

The workaround for Alfresco Web Client compatibility is to assign the cm:versionable aspect via the JSR-170 api, and then use the Alfresco native api calls on the COCIService to checkin/out. This will provide the same behaviour as exhibited in the web client.

Could you please clarify your advice here? Are you suggesting we call unlock() after a JCR checkin?

If we do that, the Alfresco JCR implementation would think the node is checked out when it isn't, since isCheckedOut() returns true if there is no lock.

I wonder whether you mean either of the following:

use CheckOutCheckInService to check out then check in, *instead of* the JCR methods checkout() and checkin()?

use CheckOutCheckInService to check out immediately after a JCR checkout(), and CheckOutCheckInService to check in immediately before a JCR checkin()?

But either of these would create then delete working copies (and maybe have other side effects?).

thanks

Re: JCR & versioning

jharrop — Tue, 22 Sep 2009 07:02:28 GMT

The problem here is that the JCR API is following the versioning semantics of the JSR-170 specification, which are different to those exposed in the Alfresco Web Client. When a JSR-170 node supports mix:versionable, it is locked whilst checked-in and unlocked whilst checked-out.

The JCR API is not quite following the JSR-170 specification. In JSR 170, a node becomes read-only (as opposed to locked) on check in (see spec 8.2.5), and on check out, a node loses its read-only status (see 8.2.6).

In JSR 170, the concept of locking is orthogonal to read-only. At 8.4.11, the spec says:

Note that it is possible to lock a node even if it is checked-in (the lock-related properties will be changed despite the checked-in status).
:
Note also that it is possible to unlock a node even if it is checked-in (the lock-related properties will be changed despite the checked-in status).