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    <h1>22. Virtuoso Functions Guide - DAV manipulation functions</h1>
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  <div id="text">
    <h2>DAV manipulation functions</h2>
    <div class="refpurpose">Functions for manipulating an existing DAV
    collection or resource</div>
    <div class="funcsynopsis">
        <span class="funcdef">integer <span class="function">DAV_COPY</span>
      </span>
        (<span class="paramdef">in <span class="parameter">path</span> varchar</span>, 
        <span class="paramdef">in <span class="parameter">destination</span> varchar</span>, 
        <span class="paramdef">in <span class="parameter">overwrite</span> integer</span>, 
        <span class="paramdef">in <span class="parameter">permissions</span> varchar</span>, 
        <span class="paramdef">in <span class="parameter">uname</span> varchar</span>, 
        <span class="paramdef">in <span class="parameter">gname</span> varchar</span>, 
        <span class="paramdef">in <span class="parameter">auth_uname</span> varchar</span>, 
        <span class="paramdef">in <span class="parameter">auth_pwd</span> varchar</span>);
      </div>
    <div class="funcsynopsis">
        <span class="funcdef">varchar <span class="function">DAV_MOVE</span>
      </span>
        (<span class="paramdef">in <span class="parameter">path</span> varchar</span>, 
        <span class="paramdef">in <span class="parameter">destination</span> varchar</span>, 
        <span class="paramdef">in <span class="parameter">overwrite</span> integer</span>, 
        <span class="paramdef">in <span class="parameter">auth_uname</span> varchar</span>, 
        <span class="paramdef">in <span class="parameter">auth_pwd</span> varchar</span>);
      </div>
    <div class="funcsynopsis">
        <span class="funcdef">varchar <span class="function">DAV_PROP_REMOVE</span>
      </span>
        (<span class="paramdef">in <span class="parameter">path</span> varchar</span>, 
        <span class="paramdef">in <span class="parameter">propname</span> varchar</span>, 
        <span class="paramdef">in <span class="parameter">silent</span> integer</span>, 
        <span class="paramdef">in <span class="parameter">auth_uname</span> varchar</span>, 
        <span class="paramdef">in <span class="parameter">auth_pwd</span> varchar</span>);
      </div>
    <div class="funcsynopsis">
        <span class="funcdef">integer <span class="function">DAV_PROP_SET</span>
      </span>
        (<span class="paramdef">in <span class="parameter">path</span> varchar</span>, 
        <span class="paramdef">in <span class="parameter">propname</span> varchar</span>, 
        <span class="paramdef">in <span class="parameter">propvalue</span> any</span>, 
        <span class="paramdef">in <span class="parameter">auth_uname</span> varchar</span>, 
        <span class="paramdef">in <span class="parameter">auth_pwd</span> varchar</span>);
      </div>
  
  
  
  <div class="refsect1">
      <div class="refsect1title">Description</div>
    <p>DAV_COPY copies the resource or collection taken from path to the destination.
  returns COL_ID or RES_ID on success.</p>
    <p>DAV_MOVE moves the collection or resource to the destination path
  returns 1 on success.</p>
    <p>DAV_PROP_SET defines or updates the property with name <span class="computeroutput">propname</span>
    with <span class="computeroutput">propvalue</span>. Returns PROP_ID on success.</p>
    <p>DAV_PROP_GET returns the value of previously defined property with name <span class="computeroutput">propname</span>.</p>
    <p>DAV_PROP_REMOVE removal of the existing property on target path.
    If silent supplied then no error will be returned.</p>
    <p>Some attributes of resources and collections are accessible as predefined properties. E.g., owner user ID of the resource can be retrieved or changed by
    <span class="computeroutput">DAV_PROP_GET</span> or <span class="computeroutput">DAV_PROP_SET</span> with <span class="computeroutput">propname</span> equal to &#39;:virtowneruid&#39;.
    Some of these properties are read-only for all resources, some are writable for some but not for all resources.
    Names of all predefined properties starts with &#39;:&#39; so application-specific properties should not start with colon.
    Moreover, it is strongly suggested to use &quot;unqualified XML names&quot; as property names, otherwise PROPGET and PROPPATH DAV requests may return invalid XML responses.
    <span class="computeroutput">propname</span>.</p>
  </div>
  <div class="refsect1">
      <div class="refsect1title">Parameters</div>
    <div class="refsect2">
        <span class="refsect2title">path – </span>
      
      Directory and name of source to be operated on.
    </div>
    <div class="refsect2">
        <span class="refsect2title">destination – </span>
      Directory and name of destination.
    </div>
    <div class="refsect2">
        <span class="refsect2title">overwrite – </span>
      If non zero then overwrite is enabled. Default is 0.
    </div>
    <div class="refsect2">
        <span class="refsect2title">permissions – </span>
      Access permission of Dav collection or resource.
      Defaults to &#39;110100000R&#39; if not supplied.
    </div>
    <div class="refsect2">
        <span class="refsect2title">propname – </span>
      Property name.
    </div>
    <div class="refsect2">
        <span class="refsect2title">propvalue – </span>
      Property value.
    </div>
    <div class="refsect2">
        <span class="refsect2title">silent – </span>
      If specified as non zero, then no error will be returned.
      Default is 0, so errors are returned.
    </div>
    <div class="refsect2">
        <span class="refsect2title">uname – </span>
      User identifier. Default is &#39;dav&#39;.
    </div>
    <div class="refsect2">
        <span class="refsect2title">gname – </span>
      Group identifier. Default is &#39;dav&#39;.
    </div>
    <div class="refsect2">
        <span class="refsect2title">auth_uname – </span>
      Administration user capable of performing the operation.
      Default is null.
    </div>
    <div class="refsect2">
        <span class="refsect2title">auth_pwd – </span>
      Password of Administrator. Default is null.
    </div>
  </div>

  <div class="refsect1">
      <div class="refsect1title">System Properties</div>
    <p>Names of &#39;standard live properties&#39; matches tag names used in PROPFIND response for same purposes.</p>
    <p>Names of virtuoso-specific system properties starts with &#39;:virt&#39; substring.</p>
    <p>In the table below, &#39;Read/Write&#39; access type means that the application can try to set the property.
    This does not mean that the property can be successfully changed for any particular resource or collection.</p>
    <table class="data">
      
       <tr>
          <th class="data">propname</th>
          <th class="data">Access Type</th>
          <th class="data">Data Type</th>
          <th class="data">Description</th>
        </tr>
	
	  <tr>
          <td class="data">:getlastmodified</td>
          <td class="data">Read/Write</td>
          <td class="data">datetime</td>
          <td class="data">Time of the last modification.</td>
        </tr>
	  <tr>
          <td class="data">:creationdate</td>
          <td class="data">Read/Write</td>
          <td class="data">datetime</td>
          <td class="data">Time of creation.</td>
        </tr>
	  <tr>
          <td class="data">:lastaccessed</td>
          <td class="data">Read Only</td>
          <td class="data">datetime</td>
          <td class="data">Time of the last access to the resource, may be inaccurate by a large amount.</td>
        </tr>
	  <tr>
          <td class="data">:getetag</td>
          <td class="data">Read Only</td>
          <td class="data">varchar</td>
          <td class="data">The value of &#39;Etag&#39; field of response header as reported by HEAD HTTP request.</td>
        </tr>
	  <tr>
          <td class="data">:getcontenttype</td>
          <td class="data">Read/Write</td>
          <td class="data">varchar</td>
          <td class="data">MIME type of the resource (&#39;dav/unix-directory&#39; for collections).</td>
        </tr>
	  <tr>
          <td class="data">:getcontentlength</td>
          <td class="data">Read Only</td>
          <td class="data">integer</td>
          <td class="data">Resource length in bytes. 0 for collections.</td>
        </tr>
	  <tr>
          <td class="data">:resourcetype</td>
          <td class="data">Read Only</td>
          <td class="data">XML entity</td>
          <td class="data">&#39;&lt;D:collection/&gt;&#39; for collections, NULL for resources.</td>
        </tr>
	  <tr>
          <td class="data">:virtowneruid</td>
          <td class="data">Read/Write</td>
          <td class="data">integer</td>
          <td class="data">User ID of resource owner user.</td>
        </tr>
	  <tr>
          <td class="data">:virtownergid</td>
          <td class="data">Read/Write</td>
          <td class="data">integer</td>
          <td class="data">Group ID of resource owner group.</td>
        </tr>
	  <tr>
          <td class="data">:virtpermissions</td>
          <td class="data">Read/Write</td>
          <td class="data">char(10)</td>
          <td class="data">Access permissions string.</td>
        </tr>
	  <tr>
          <td class="data">:virtacl</td>
          <td class="data">Read/Write</td>
          <td class="data">long varbinary</td>
          <td class="data">Access Control List.</td>
        </tr>
	  <tr>
          <td class="data">:virtdet</td>
          <td class="data">Read/Write</td>
          <td class="data">varchar</td>
          <td class="data">DAV Extension Type of special collection, NULL for plain collections and resources.</td>
        </tr>
	
      
    </table>
      <br />
    <p>Note that the value of &#39;Etag&#39; field depends on &#39;:getlastmodified&#39; value.
    Some HTTP clients, such as download managers, web indexing robots and proxy servers, use &#39;Etag&#39; field to support caching and/or partial document transfer.
    It is unsafe to decrement &#39;:getlastmodified&#39; because it can confuse such clients.</p>
    <p>Only resource/collection owner or DAV administrator can change &#39;:virtowneruid&#39;, &#39;:virtownergid&#39;, &#39;:virtpermissions&#39; and &#39;:virtacl&#39;.</p>
    <p>Only DAV administrator can change &#39;:virtdet&#39; property.</p>
  </div>  
  
  <div class="refsect1title">Errors</div>
    <table class="data">
      
       <tr>
        <th class="data">Error Code</th>
        <th class="data">Description</th>
      </tr>
	
	  <tr>
     <td class="data">
          <a name="err&gt;=0" />
          <span class="errorcode">&gt;=0</span>
     </td>
	    <td class="data">
          <span class="errorname">success</span>
        </td>
      </tr>
	  <tr>
     <td class="data">
          <a name="err-1" />
          <span class="errorcode">-1</span>
     </td>
	    <td class="data">
          <span class="errorname">The path (target of operation) is not valid</span>
        </td>
      </tr>
	  <tr>
     <td class="data">
          <a name="err-2" />
          <span class="errorcode">-2</span>
     </td>
	    <td class="data">
          <span class="errorname">The destination (path) is not valid</span>
        </td>
      </tr>
	  <tr>
     <td class="data">
          <a name="err-3" />
          <span class="errorcode">-3</span>
     </td>
	    <td class="data">
          <span class="errorname">Overwrite flag is not set and destination exists</span>
        </td>
      </tr>
	  <tr>
     <td class="data">
          <a name="err-4" />
          <span class="errorcode">-4</span>
     </td>
	    <td class="data">
          <span class="errorname">The target is resource, but source is collection (in copy move operations)</span>
        </td>
      </tr>
	  <tr>
     <td class="data">
          <a name="err-5" />
          <span class="errorcode">-5</span>
     </td>
	    <td class="data">
          <span class="errorname">Permissions are not valid</span>
        </td>
      </tr>
	  <tr>
     <td class="data">
          <a name="err-6" />
          <span class="errorcode">-6</span>
     </td>
	    <td class="data">
          <span class="errorname">uid is not valid</span>
        </td>
      </tr>
	  <tr>
     <td class="data">
          <a name="err-7" />
          <span class="errorcode">-7</span>
     </td>
	    <td class="data">
          <span class="errorname">gid is not valid</span>
        </td>
      </tr>
	  <tr>
     <td class="data">
          <a name="err-8" />
          <span class="errorcode">-8</span>
     </td>
	    <td class="data">
          <span class="errorname">Target is locked</span>
        </td>
      </tr>
	  <tr>
     <td class="data">
          <a name="err-9" />
          <span class="errorcode">-9</span>
     </td>
	    <td class="data">
          <span class="errorname">Destination is locked</span>
        </td>
      </tr>
	  <tr>
     <td class="data">
          <a name="err-10" />
          <span class="errorcode">-10</span>
     </td>
	    <td class="data">
          <span class="errorname">Property name is reserved (protected or private)</span>
        </td>
      </tr>
	  <tr>
     <td class="data">
          <a name="err-11" />
          <span class="errorcode">-11</span>
     </td>
	    <td class="data">
          <span class="errorname">Property does not exists</span>
        </td>
      </tr>
	  <tr>
     <td class="data">
          <a name="err-12" />
          <span class="errorcode">-12</span>
     </td>
	    <td class="data">
          <span class="errorname">Authentication failed</span>
        </td>
      </tr>
	  <tr>
     <td class="data">
          <a name="err-13" />
          <span class="errorcode">-13</span>
     </td>
	    <td class="data">
          <span class="errorname">Operation is forbidden (the authenticated user do not have a permissions for the action)</span>
        </td>
      </tr>
	  <tr>
     <td class="data">
          <a name="err-14" />
          <span class="errorcode">-14</span>
     </td>
	    <td class="data">
          <span class="errorname">the target type is not valid</span>
        </td>
      </tr>
	  <tr>
     <td class="data">
          <a name="err-15" />
          <span class="errorcode">-15</span>
     </td>
	    <td class="data">
          <span class="errorname">The umask is not valid</span>
        </td>
      </tr>
	  <tr>
     <td class="data">
          <a name="err-16" />
          <span class="errorcode">-16</span>
     </td>
	    <td class="data">
          <span class="errorname">The property already exists</span>
        </td>
      </tr>
	  <tr>
     <td class="data">
          <a name="err-17" />
          <span class="errorcode">-17</span>
     </td>
	    <td class="data">
          <span class="errorname">Invalid property value</span>
        </td>
      </tr>
	  <tr>
     <td class="data">
          <a name="err-18" />
          <span class="errorcode">-18</span>
     </td>
	    <td class="data">
          <span class="errorname">no such user</span>
        </td>
      </tr>
	  <tr>
     <td class="data">
          <a name="err-19" />
          <span class="errorcode">-19</span>
     </td>
	    <td class="data">
          <span class="errorname">no home directory</span>
        </td>
      </tr>
	
      
    </table>
    <br />
  <p />

  <div class="refsect1">
      <div class="refsect1title">Examples</div>
    <a name="ex_dav_api_change_1" />
      <div class="example">
        <div class="exampletitle">Copy and move operations</div>
     <p>Renaming of the resource and copy the folder. After executing the commands in the http://[host:port]/DAV/user/B/ we will show the resource B.txt</p>
      <div>
          <pre class="screen">
-- initial upload      
SQL&gt; select DB.DBA.DAV_COL_CREATE (&#39;/DAV/user/&#39;,&#39;110100000R&#39;, &#39;dav&#39;,&#39;dav&#39;,&#39;dav&#39;,&#39;dav&#39;);
SQL&gt; select DB.DBA.DAV_COL_CREATE (&#39;/DAV/user/A/&#39;,&#39;110100000R&#39;,&#39;dav&#39;,&#39;dav&#39;,&#39;dav&#39;,&#39;dav&#39;);
SQL&gt; select DB.DBA.DAV_RES_UPLOAD (&#39;/DAV/user/A/A.txt&#39;,&#39;this is a test&#39;,&#39;text/plain&#39;,&#39;110100000R&#39;,&#39;dav&#39;,&#39;dav&#39;,&#39;dav&#39;,&#39;dav&#39;);
SQL&gt; DB.DBA.DAV_MOVE(&#39;/DAV/user/A/A.txt&#39;, &#39;/DAV/user/A/B.txt&#39;, 1,&#39;dav&#39;,&#39;dav&#39;);
SQL&gt; DB.DBA.DAV_COPY(&#39;/DAV/user/A/&#39;, &#39;/DAV/user/B/&#39;, 1, &#39;110110000R&#39;,&#39;dav&#39;,&#39;dav&#39;,&#39;dav&#39;,&#39;dav&#39;);

      </pre>
        </div>
    </div>
  </div>

   <div class="refsect1">
      <div class="refsect1title">See Also</div>
    <p>
        <a href="fn_dav_api_add.html">DAV content add/update/delete functions</a>
      </p>
    <p>
        <a href="fn_dav_api_lock.html">DAV lock manipulation functions</a>
      </p>
    <p>
        <a href="fn_dav_api_search.html">DAV search functions</a>
      </p>
    <p>
        <a href="fn_dav_api_user.html">DAV user management functions</a>
      </p>
  </div>

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