} // public void Execute(object parameter)
/// <summary>
/// Executes the relationship query against the layer.
/// </summary>
/// <param name="parameter">The OnClickPopupInfo from the layer.</param>
public void doExecute(object parameter)
{
// The plan is:
// Get the featurelayer and clicked feature from the pop-up.
// The PopupItem property of OnClickPopupInfo provides information
// about the item currently shown in the pop-up.
// Then get feature ID value and put it into ExecuteRelationshipQueryAsync task.
// Then get related records ID's and create FeatureLayer from
// related table/feature class, filtered by that ID's.
// Then show grid for that layer.
popupInfo = parameter as OnClickPopupInfo;
inputFeature = popupInfo.PopupItem.Graphic;
var lyr = new VUtils.ArcGIS.SLViewer.VLayer(popupInfo.PopupItem.Layer);
// print layer info to console
log(string.Format(
"Execute, layer type '{0}', popupInd '{1}', popupDescr '{2}', lyrID '{3}', lyrName '{4}', title '{5}'",
popupInfo.PopupItem.Layer.GetType(),
popupInfo.SelectedIndex, popupInfo.SelectionDescription,
popupInfo.PopupItem.LayerId, popupInfo.PopupItem.LayerName, popupInfo.PopupItem.Title));
log(string.Format("Execute, lyrType '{0}', lyrUrl '{1}'", lyr.lyrType, lyr.lyrUrl));
log(string.Format("Execute, inputFeature.Attributes.Count '{0}'", inputFeature.Attributes.Count));
// we need FeatureLayer
if (lyr.lyrType == "FeatureLayer")
{
// The layer to get related records for.
// This is used to get the RelationshipID and Query url.
relatesLayer = lyr.lyr as FeatureLayer;
}
else if (lyr.lyrType == "ArcGISDynamicMapServiceLayer")
{
var rLyr = getSubLayer(lyr, popupInfo.PopupItem.LayerId) as FeatureLayer;
if (relatesLayer != null && relatesLayer.Url == rLyr.Url)
{
// we're here after relatesLayer.Initialized
;
}
else
{
// init new FeatureLayer
relatesLayer = rLyr;
relatesLayer.Initialized += (a, b) => {
if (relatesLayer.InitializationFailure == null)
{
var info = relatesLayer.LayerInfo;
log(string.Format(
"Execute, relatesLayer.InitializationFailure == null, info '{0}'",
info));
Execute(parameter);
}
}; // callback
relatesLayer.Initialize();
log(string.Format("Execute, relatesLayer.Initialize called, wait..."));
return;
} // init new FeatureLayer
} // if(lyr.lyrType == "ArcGISDynamicMapServiceLayer")
else
{
throw new Exception("Layer type must be FeatureLayer or ArcGISDynamicMapServiceLayer");
}
// we have inited FeatureLayer now
if (relatesLayer.LayerInfo == null)
{
throw new Exception(string.Format("Execute, relatesLayer.LayerInfo == null"));
}
var clickedLayer = new VUtils.ArcGIS.SLViewer.VLayer(relatesLayer);
// check FeatureLayer info
log(string.Format(
"Execute, relatesLayer lyrType '{0}', lyrUrl '{1}'",
clickedLayer.lyrType, clickedLayer.lyrUrl));
// get relationship id
var rels = relatesLayer.LayerInfo.Relationships;
if (rels.Count() <= 0)
{
log(string.Format("Execute, relationships.count <= 0"));
throw new Exception(string.Format("Layer have not relations"));
}
else if (rels.Count() > 1)
{
log(string.Format("Execute, relationships.count > 1"));
if (relationsListForm.listBox1.Items.Count > 0)
{
// continue after user input
// user selected relID already
relationInfo = new VUtils.ArcGIS.SLViewer.VRelationInfo(
relationsListForm.listBox1.SelectedItem as string);
relationsListForm.listBox1.Items.Clear();
}
else
{
// new query
foreach (var r in rels)
{
var ri = new VUtils.ArcGIS.SLViewer.VRelationInfo(r);
relationsListForm.listBox1.Items.Add(ri.descr);
}
relationsListForm.listBox1.SelectedItem = relationsListForm.listBox1.Items.First();
MapApplication.Current.ShowWindow("Relations",
relationsListForm,
false, // ismodal
(sender, canceleventargs) => {
log("relationsListForm onhidINGhandler");
}, // onhidinghandler
(sender, eventargs) => {
log("relationsListForm onhidEhandler");
if (relationsListForm.listBox1.SelectedItem != null)
{
Execute(parameter);
}
}, // onhidehandler
WindowType.Floating
);
return; // wait for user input
} // new query
} // rels.count > 1
else // rels.count == 1
{
log(string.Format("Execute, relationships.count = 1"));
relationInfo = new VUtils.ArcGIS.SLViewer.VRelationInfo(rels.First());
}
// ok, we get relation info now
log(string.Format(
"Execute, getrelid, relationshipID '{0}', rels.count '{1}'",
relationInfo.id, rels.Count()));
// Get the name of the ObjectID field.
objectID = relatesLayer.LayerInfo.ObjectIdField;
string objectIDAlias = clickedLayer.getFieldAlias(objectID);
log(string.Format("Execute, objectID '{0}', alias '{1}'", objectID, objectIDAlias));
if (objectIDAlias != "")
{
objectID = objectIDAlias; // because of bug? in Graphic.Attributes[fieldname]
}
// get key value
Object v = null;
v = inputFeature.Attributes[objectID];
log(string.Format("Execute, objIdValue.str='{0}'", v));
int objIdValue = -1;
try {
objIdValue = Int32.Parse(string.Format("{0}", v));
}
catch (Exception ex) {
// fieldname = 'OBJECTID' but alias = 'Object ID'
var ks = string.Join(", ", inputFeature.Attributes.Keys);
var vs = string.Join(", ", inputFeature.Attributes.Values);
log(string.Format("Execute, inputFeature.AttributesKeys='{0}', values='{1}'", ks, vs));
throw new Exception(string.Format("OBJECTID is not an integer"));
}
log(string.Format("Execute, objIdValue.int='{0}'", objIdValue));
// Input parameters for QueryTask
RelationshipParameter relationshipParameters = new RelationshipParameter()
{
ObjectIds = new int[] { objIdValue },
OutFields = new string[] { "*" }, // Return all fields
ReturnGeometry = true, // Return the geometry
// so that features can be displayed on the map if applicable
RelationshipId = relationInfo.id, // Obtain the desired RelationshipID
// from the Service Details page. Here it takes the first relationship
// it finds if there is more than one.
OutSpatialReference = MapApplication.Current.Map.SpatialReference
};
// Specify the Feature Service url for the QueryTask.
queryTask.Url = relatesLayer.Url;
// Execute the Query Task with specified parameters
queryTask.ExecuteRelationshipQueryAsync(relationshipParameters);
// Find the attribute grid in the Pop-up and insert the BusyIndicator
attributeGrid = Utils.FindChildOfType <Grid>(popupInfo.AttributeContainer, 3);
indicator = new BusyIndicator();
if (attributeGrid != null)
{
// Add the Busy Indicator
attributeGrid.Children.Add(indicator);
indicator.IsBusy = true;
}
log(string.Format("Execute, completed, wait for QueryTask_ExecuteRelationshipQueryCompleted"));
} // public void doExecute(object parameter)