Hi there, I suggest to cast to DataObject (instead of Persistent) and use DataObject API to read/write properties:
DataObject object = (DataObject) DataObjectUtils.objectForPK(context, tmpClass, 12); object.readProperty(someProperty); object.writeProperty(someProperty, someValue); Andrus On Oct 17, 2012, at 10:43 AM, Sampath Uppula <[email protected]> wrote: > Hi, > > I have many persistent classes in my application and all the classes > generated by cayenne tool, one of the class is, TaskMaster. > > public abstract class _TaskMaster extends CayenneDataObject { > > public static final String TASK_ACTION_PROPERTY = "taskAction"; > public static final String TASK_DEPENDENT_KEY_PROPERTY = > "taskDependentKey"; > public static final String TASK_DESCRIPTION_PROPERTY = "taskDescription"; > public static final String TASK_ENTRY_CRIETERIA_PROPERTY = > "taskEntryCrieteria"; > public static final String TASK_EXIT_CRIETERIA_PROPERTY = > "taskExitCrieteria"; > public static final String TASK_KEY_COLUMN_PROPERTY = "taskKeyColumn"; > public static final String TASK_NAME_PROPERTY = "taskName"; > public static final String TASK_PARENT_ID_PROPERTY = "taskParentId"; > public static final String TASK_TYPE_PROPERTY = "taskType"; > public static final String TASK_CONTEXT_PROPERTY = "taskContext"; > public static final String TASK_LAYER_PROPERTY = "taskLayer"; > public static final String TASK_ROLE_PROPERTY = "taskRole"; > public static final String TASK_TRANSACTION_PROPERTY = "taskTransaction"; > > public static final String ID_PK_COLUMN = "ID"; > > //setter & getter methods of the preperties > > } > > My code is : > > 1). > public static void testPersistent() throws Exception { > ObjectContext context = DataContext.createDataContext(); > String tmpStr = "com.persistent.TaskMaster"; > Class tmpClass = Class.forName(tmpStr); > > Persistent object = (Persistent) > DataObjectUtils.objectForPK(context, tmpClass, 12); > > //here I am not able to fetch the values of the properties of the TaskMaster > class. > //please provide the help on this. > } > > 2). > Class tmpClass = Class.forName(tmpStr); > expression = > ExpressionFactory.matchExp((Persistent) DataObjectUtils.objectForPK(context, > tmpClass, taskIdentifierValue)); > expression = expression.andExp((Expression) > exitCriteria.get(tmpStr)); > > tmpQuery = new SelectQuery(tmpClass, expression); > List<Persistent> list = > context.performQuery(tmpQuery); > > I am developing the strategic functionality, where the persistent class name > and properties comes from the configuration dynamically. > Based on the persistent class and properties, I need to frame the expression > and query and need to prepare the collection to display the results on JSP. > > So in the above code, the dynamic class name is, "TaskMaster" once I get the > persistent object I want to fetch the values of all the properties defined in > the TaskMaster class. > I don't have any clue how to do that, please throw some light on this to > achieve. > > Thanks, > Sampath Uppula > > > ============================================================================================================================Disclaimer: > This message and the information contained herein is proprietary and > confidential and subject to the Tech Mahindra policy statement, you may > review the policy at <a > href="http://www.techmahindra.com/Disclaimer.html";>http://www.techmahindra.com/Disclaimer.html</a> > externally and <a > href="http://tim.techmahindra.com/tim/disclaimer.html";>http://tim.techmahindra.com/tim/disclaimer.html</a> > internally within Tech > Mahindra.============================================================================================================================
