/// <summary>
/// Handles the ChildInitialized event of the ForEachQuery ReplicatorActivity.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="ReplicatorChildEventArgs"/> instance containing the event data.</param>
private void ForEachQuery_ChildInitialized(object sender, ReplicatorChildEventArgs e)
{
Logger.Instance.WriteMethodEntry(EventIdentifier.ResolveQueriesForEachQueryChildInitialized);
string queryXPathFilter = null;
try
{
// Prepare for the execution of the query by pulling the XPath filter
// from the definition and assigning it to the find resources activity
Definition definition = e.InstanceData as Definition;
FindResources runQuery = e.Activity as FindResources;
if (runQuery == null || definition == null)
{
return;
}
queryXPathFilter = definition.Right;
runQuery.XPathFilter = queryXPathFilter;
// Also add results from any previous queries
// so that the first query could also be used in the filter criteria for the second query
// providing for the ability to further refine the result set.
runQuery.QueryResults = this.QueryResults;
}
finally
{
Logger.Instance.WriteMethodExit(EventIdentifier.ResolveQueriesForEachQueryChildInitialized, "Query XPath filter: '{0}'.", queryXPathFilter);
}
}
/// <summary>
/// Handles the ChildCompleted event of the ForEachQuery ReplicatorActivity.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="ReplicatorChildEventArgs"/> instance containing the event data.</param>
private void ForEachQuery_ChildCompleted(object sender, ReplicatorChildEventArgs e)
{
Logger.Instance.WriteMethodEntry(EventIdentifier.ResolveQueriesForEachQueryChildCompleted);
try
{
// Load the results into the query results dictionary
// Results will be added even if no resources were found
Definition definition = e.InstanceData as Definition;
FindResources runQuery = e.Activity as FindResources;
if (definition != null && runQuery != null)
{
this.QueryResults.Add(definition.Left, runQuery.FoundIds);
}
}
finally
{
Logger.Instance.WriteMethodExit(EventIdentifier.ResolveQueriesForEachQueryChildCompleted);
}
}