/// <summary>
/// Helper function to create a new instance of the specified type of condition evaluator
/// </summary>
/// <param name="evalType"></param>
/// <returns></returns>
private IJTXConditionEvaluator CreateEvaluator(string evalType)
{
IJTXConditionEvaluator retVal = null;
IJTXSpatialNotificationManager snManager = this.WmxDatabase.SpatialNotificationManager;
IJTXConditionEvaluatorNameSet allEvaluators = snManager.ConditionEvaluators;
// Find the type of evaluator specified
for (int i = 0; i < allEvaluators.Count; i++)
{
IJTXConditionEvaluatorName tempEval = allEvaluators.get_Item(i);
if (tempEval.Name.Equals(evalType))
{
// Once found, create a new instance of this evaluator
retVal = snManager.CreateConditionEvaluator(tempEval);
break;
}
}
return(retVal);
}
/// <summary>
/// Required by IGPFunction2 interface; this function is called when the GP tool is ready to be executed.
/// </summary>
/// <param name="paramValues"></param>
/// <param name="trackCancel"></param>
/// <param name="envMgr"></param>
/// <param name="msgs"></param>
public override void Execute(IArray paramValues, ITrackCancel trackCancel, IGPEnvironmentManager envMgr, IGPMessages msgs)
{
// Do some common error-checking
base.Execute(paramValues, trackCancel, envMgr, msgs);
try
{
// Ensure that the current user has admin access to the current Workflow Manager DB
if (!CurrentUserIsWmxAdministrator())
{
throw new WmauException(WmauErrorCodes.C_USER_NOT_ADMIN_ERROR);
}
IJTXSpatialNotificationManager snManager = this.WmxDatabase.SpatialNotificationManager;
// Look up the change rule that we'll be modifying
IJTXChangeRule2 changeRule = GetChangeRuleByName(m_spatialNotification) as IJTXChangeRule2;
IJTXMultiDatasetConditionEvaluator datasetEvaluator = null;
// Try to get an existing dataset evaluator if one exists.
if (m_tryExistingEvaluator)
{
IJTXConditionEvaluatorSet allEvaluators = changeRule.Evaluators;
for (int i = 0; i < allEvaluators.Count; i++)
{
IJTXConditionEvaluator tempEval = allEvaluators.get_Item(i);
if (tempEval.Name.Equals(C_TYPE_DATASET_EVALUATOR) && tempEval is IJTXMultiDatasetConditionEvaluator)
{
datasetEvaluator = tempEval as IJTXMultiDatasetConditionEvaluator;
break;
}
}
}
// If we don't have an evaluator at this point, then we need to create one
if (datasetEvaluator == null)
{
datasetEvaluator = CreateEvaluator(C_TYPE_DATASET_EVALUATOR) as IJTXMultiDatasetConditionEvaluator;
datasetEvaluator.DatasetConfigurations = new JTXDatasetConditionConfigurationSetClass();
changeRule.Evaluators.Add(datasetEvaluator as IJTXConditionEvaluator);
}
// Create a new dataset configuration
IJTXDatasetConditionConfiguration datasetCondition = new JTXDatasetConditionConfigurationClass();
datasetCondition.DatabaseID = m_dataWorkspace;
datasetCondition.DatasetName = m_featureClass;
datasetCondition.ChangeCondition = m_whenToMonitor;
datasetCondition.WhereConditions = m_whereClauses;
datasetCondition.ChangeFields = m_monitorAllColumns ? "*" : m_columns.Replace(';', ',');
datasetCondition.Name = this.WmxDatabase.GetDataWorkspaceName(m_dataWorkspace).Name + "/" + m_featureClass;
// Store the configuration in the dataset evaluator
datasetEvaluator.DatasetConfigurations.Add(datasetCondition);
changeRule.Store();
// Set the output parameter
WmauParameterMap paramMap = new WmauParameterMap(paramValues);
IGPParameterEdit3 outParamEdit = paramMap.GetParamEdit(C_PARAM_OUT_SPATIAL_NOTIFICATION);
IGPString outParamStr = new GPStringClass();
outParamStr.Value = m_spatialNotification;
outParamEdit.Value = outParamStr as IGPValue;
msgs.AddMessage(Properties.Resources.MSG_DONE);
}
catch (WmauException wmEx)
{
try
{
msgs.AddError(wmEx.ErrorCodeAsInt, wmEx.Message);
}
catch
{
// Catch anything else that possibly happens
}
}
catch (Exception ex)
{
try
{
WmauError error = new WmauError(WmauErrorCodes.C_ADD_DATASET_COND_ERROR);
msgs.AddError(error.ErrorCodeAsInt, error.Message + "; " + ex.Message);
}
catch
{
// Catch anything else that possibly happens
}
}
finally
{
// Release any COM objects here!
}
}
