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      modifications on a data object which occurred since logging
      was activated.  In the case of deletions and modifications, the old
      values are also held in the change summary.
     </p>
     <p class="para">
      If logging is no longer active
      then the change summary only holds changes made up to the point when
      logging was deactivated.  
      Reactivating logging clears the change summary.
      This is useful when a set of changes have been written out by a
      DAS and the data object is to be reused.
     </p>
     <div id="sdo.class.SDO_DAS_ChangeSummary.methods" class="section">
      <h2 class="title">Methods</h2>
      <ul class="itemizedlist">
       <li class="listitem">
        <p class="para">
         <a href="function.sdo-das-changesummary-beginlogging.html" class="link">beginLogging</a> 
         - begin logging changes made to a data object
        </p>
       </li>
       <li class="listitem">
        <p class="para">
         <a href="function.sdo-das-changesummary-endlogging.html" class="link">endLogging</a> 
         - end logging changes made to a data object
        </p>
       </li>
       <li class="listitem">
        <p class="para">
         <a href="function.sdo-das-changesummary-islogging.html" class="link">isLogging</a> 
         - test to see if change logging is on
        </p>
       </li>
       <li class="listitem">
        <p class="para">
         <a href="function.sdo-das-changesummary-getchangeddataobjects.html" class="link">getChangedDataObjects</a> 
         - get a list of the data objects which have been changed
        </p>
       </li>
       <li class="listitem">
        <p class="para">
         <a href="function.sdo-das-changesummary-getchangetype.html" class="link">getChangeType</a> 
         - get the type of change which has been made to a data object
        </p>
       </li>
       <li class="listitem">
        <p class="para">
         <a href="function.sdo-das-changesummary-getoldvalues.html" class="link">getOldValues</a> 
         - get a list of old values for a data object
        </p>
       </li>
       <li class="listitem">
        <p class="para">
         <a href="function.sdo-das-changesummary-getoldcontainer.html" class="link">getOldContainer</a> 
         - get the old container data object for a deleted data object
        </p>
       </li>
      </ul>
     </div>
    </div>

    <div id="sdo.class.sdodas-setting" class="section">
     <h2 class="title">
      <b class="classname">SDO_DAS_Setting</b>
     </h2>
     <p class="para">
      The interface through which the old value for a property is
      accessed. A list of settings is returned by the change summary method
      <a href="function.sdo-das-changesummary-getoldvalues.html" class="link">
       <b>getOldValues()</b>
      </a>.
     </p>
     <div id="sdo.class.SDO_DAS_Setting.methods" class="section">
      <h2 class="title">Methods</h2>
      <ul class="itemizedlist">
       <li class="listitem">
        <p class="para">
         <a href="function.sdo-das-setting-getpropertyindex.html" class="link">getPropertyIndex</a> 
         - get the property index for the changed property
        </p>
       </li>
       <li class="listitem">
        <p class="para">
         <a href="function.sdo-das-setting-getpropertyname.html" class="link">getPropertyName</a> 
         - get the property name for the changed property
        </p>
       </li>
       <li class="listitem">
        <p class="para">
         <a href="function.sdo-das-setting-getvalue.html" class="link">getValue</a> 
         - get the old value for the changed property
        </p>
       </li>
       <li class="listitem">
        <p class="para">
         <a href="function.sdo-das-setting-getlistindex.html" class="link">getListIndex</a> 
         - get the list index for the old value if it was part of a 
         many-valued property
        </p>
       </li>
       <li class="listitem">
        <p class="para">
         <a href="function.sdo-das-setting-isset.html" class="link">isSet</a>
         - test to see if the property was set prior to being modified
         </p>
       </li>
      </ul>
     </div>
    </div>

    <div id="sdo.class.sdodas-datafactory" class="section">
     <h2 class="title">
      <b class="classname">SDO_DAS_DataFactory</b>
     </h2>
     <p class="para">
      The interface for constructing the model for an SDO_DataObject.
      The SDO_DAS_DataFactory is an abstract class providing a static
      method which returns a concrete data factory implementation.
      The implementation is used by Data Access Services to create an 
      SDO model from their model.
      For example, a Relational Data Access Service might create and populate
      an SDO_DAS_DataFactory model based on a schema for a relational
      database.
     </p>
     <div id="sdo.class.SDO_DAS_DataFactory.methods" class="section">
      <h2 class="title">Methods</h2>
      <ul class="itemizedlist">
       <li class="listitem">
        <p class="para">
         <a href="function.sdo-das-datafactory-getdatafactory.html" class="link">getDataFactory</a> 
         - static methods for getting a concrete data factory instance
        </p>
       </li>
      </ul>
      <ul class="itemizedlist">
       <li class="listitem">
        <p class="para">
         <a href="function.sdo-das-datafactory-addtype.html" class="link">addType</a> 
         - add a new type to the SDO model
        </p>
       </li>
      </ul>
      <ul class="itemizedlist">
       <li class="listitem">
        <p class="para">
         <a href="function.sdo-das-datafactory-addpropertytotype.html" class="link">addPropertyToType</a> 
         - add a new property to a type definition in the SDO model
        </p>
       </li>
      </ul>
     </div>
    </div>
   </div>
  </div>

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<h2>Table of Contents</h2><ul class="chunklist chunklist_reference"><li><a href="function.sdo-das-changesummary-beginlogging.html">SDO_DAS_ChangeSummary::beginLogging</a> 鈥