function MultiGeometryFromSelection($featureSrvc, $map, $selText)
{
$sel = new MgSelection($map, $selText);
$selLayers = $sel->GetLayers();
$geomColl = new MgGeometryCollection();
$agfRW = new MgAgfReaderWriter();
$simplyPolygonOnly = true;
for ($i = 0; $i < $selLayers->GetCount(); $i++) {
$layer = $selLayers->GetItem($i);
$filter = $sel->GenerateFilter($layer, $layer->GetFeatureClassName());
$query = new MgFeatureQueryOptions();
$query->SetFilter($filter);
$featureSource = new MgResourceIdentifier($layer->GetFeatureSourceId());
$features = $featureSrvc->SelectFeatures($featureSource, $layer->GetFeatureClassName(), $query);
if ($features) {
$classDef = $features->GetClassDefinition();
$geomPropName = $classDef->GetDefaultGeometryPropertyName();
$j = 0;
while ($features->ReadNext()) {
$geomReader = $features->GetGeometry($geomPropName);
$geom = $agfRW->Read($geomReader);
$type = $geom->GetGeometryType();
if ($type == MgGeometryType::MultiPolygon || $type == MgGeometryType::CurvePolygon || $type == MgGeometryType::MultiCurvePolygon) {
$simplyPolygonOnly = false;
} else {
if ($type != MgGeometryType::Polygon) {
continue;
}
}
$geomColl->Add($geom);
}
}
}
if ($geomColl->GetCount() == 0) {
return null;
}
$gf = new MgGeometryFactory();
if ($simplyPolygonOnly) {
$polyColl = new MgPolygonCollection();
for ($i = 0; $i < $geomColl->GetCount(); $i++) {
$polyColl->Add($geomColl->GetItem($i));
}
return $gf->CreateMultiPolygon($polyColl);
} else {
return $gf->CreateMultiGeometry($geomColl);
}
}
} else {
$srsTarget = null;
$srsXform = null;
$bNeedsTransform = $srsLayer->GetUnitScale() != 1.0;
}
$properties = BuildSelectionArray($featureReader, $layerName, $properties, $bComputedProperties, $srsLayer, $bNeedsTransform, $oLayer, true);
$featureReader->Close();
}
}
}
$selection->Save($resourceService, $mapName);
//print_r($properties);
//echo "/* SelectionXML:".$selection->ToXML()."*/";
header('Content-type: application/json');
header('X-JSON: true');
$layers = $selection->GetLayers();
$result = NULL;
$result->hasSelection = false;
if ($layers && $layers->GetCount() >= 0) {
$result->hasSelection = true;
$oExtents = $selection->GetExtents($featureService);
if ($oExtents) {
$oMin = $oExtents->GetLowerLeftCoordinate();
$oMax = $oExtents->GetUpperRightCoordinate();
$result->extents = NULL;
$result->extents->minx = $oMin->GetX();
$result->extents->miny = $oMin->GetY();
$result->extents->maxx = $oMax->GetX();
$result->extents->maxy = $oMax->GetY();
/*keep the full extents of the selection when saving the selection in the session*/
$properties->extents = NULL;
$sdfParams = new MgCreateSdfParams("LatLong", $srsDefMap, $schema);
$featureSrvc->CreateFeatureSource($dataSourceId, $sdfParams);
//Add layer to map
$layer = new MgLayer($layerDefId, $resourceSrvc);
$layer->SetName($bufferName);
$layer->SetLegendLabel($bufferName);
$layer->SetDisplayInLegend(true);
$layer->SetSelectable(true);
$layers->Insert(0, $layer);
} else {
//data source already exist. clear its content
//
ClearDataSource($featureSrvc, $dataSourceId, $featureName);
}
$sel = new MgSelection($map, $selText);
$selLayers = $sel->GetLayers();
$agfRW = new MgAgfReaderWriter();
$bufferGeometries = new MgGeometryCollection();
$commands = new MgFeatureCommandCollection();
$featId = 0;
$propCollection = new MgBatchPropertyCollection();
$excludedLayers = 0;
$srsDs = null;
$inputGeometries = new MgGeometryCollection();
$bufferFeatures = 0;
$allCompatible = false;
for ($li = 0; $li < $selLayers->GetCount(); $li++) {
$selLayer = $selLayers->GetItem($li);
$inputLayer = false;
$selLayerName = $selLayer->GetName();
for ($il = 0; $il < count($layerNames); $il++) {
$fsvc->UpdateFeatures($id, $cmdColl, false);
$mapId = new MgResourceIdentifier("Library://TrevorWekel/NewSdf.MapDefinition");
$map = new MgMap();
$map->Create($rsvc, $mapId, "NewMap");
echo "Building Selection from Add()\n";
$sel = new MgSelection($map);
$slayer = $map->GetLayers()->GetItem(0);
$sel->AddFeatureIdInt32($slayer, "IntKey", 1);
$sel->AddFeatureIdInt32($slayer, "IntKey", 10);
$sel->AddFeatureIdInt32($slayer, "IntKey", 20);
echo "XML FeatureSet is\n" . $sel->ToXml() . "\n";
echo "\nString Filter: " . $sel->GenerateFilter($slayer, "StringKey") . "\n\n";
echo "Building Selection from XML\n";
$sel2 = new MgSelection($map, $sel->ToXml());
// Test basic methods
$layerColl = $sel2->GetLayers();
$newLayer = $layerColl->GetItem(0);
echo "First layer selected is " . $newLayer->GetName() . "\n";
echo "BadKey Filter: " . $sel2->GenerateFilter($slayer, "BadKey") . "\n";
$filter = $sel2->GenerateFilter($slayer, "IntKey");
echo "\nString Filter: " . $filter . "\n\n";
$query = new MgFeatureQueryOptions();
$query->AddFeatureProperty("KEY");
$query->AddFeatureProperty("NAME");
$query->SetFilter($filter);
echo "Selected features\n";
$reader = $fsvc->SelectFeatures($id, "IntKey", $query);
while ($reader->ReadNext() == true) {
echo $reader->GetString("NAME") . "\n";
}
echo "MgSelection from Reader\n";
public function GetSelectedFeatures($sessionId, $mapName, $layerName, $format)
{
$fmt = $this->ValidateRepresentation($format, array("xml", "geojson", "html"));
$propList = $this->GetRequestParameter("properties", "");
$pageSize = $this->GetRequestParameter("pagesize", -1);
$pageNo = $this->GetRequestParameter("page", -1);
$orientation = $this->GetRequestParameter("orientation", "h");
//Internal debugging flag
$chunk = $this->GetBooleanRequestParameter("chunk", true);
try {
$this->EnsureAuthenticationForSite($sessionId);
$siteConn = new MgSiteConnection();
$siteConn->Open($this->userInfo);
$resSvc = $siteConn->CreateService(MgServiceType::ResourceService);
$featSvc = $siteConn->CreateService(MgServiceType::FeatureService);
$map = new MgMap($siteConn);
$map->Open($mapName);
$selection = new MgSelection($map);
$selection->Open($resSvc, $mapName);
$layers = $selection->GetLayers();
if ($layers != null) {
$lidx = -1;
$layerCount = $layers->GetCount();
for ($i = 0; $i < $layerCount; $i++) {
$currentlayer = $layers->GetItem($i);
if ($currentlayer->GetName() == $layerName) {
$lidx = $i;
break;
}
}
if ($lidx < 0) {
$this->NotFound($this->app->localizer->getText("E_LAYER_NOT_IN_SELECTION", $layerName), $this->GetMimeTypeForFormat($fmt));
} else {
$layer = $layers->GetItem($lidx);
$bMapped = $this->GetBooleanRequestParameter("mappedonly", "0") == "1";
$transformto = $this->GetRequestParameter("transformto", "");
$transform = null;
if ($transformto !== "") {
$resId = new MgResourceIdentifier($layer->GetFeatureSourceId());
$tokens = explode(":", $layer->GetFeatureClassName());
$transform = MgUtils::GetTransform($featSvc, $resId, $tokens[0], $tokens[1], $transformto);
}
$owriter = null;
if ($chunk === "0") {
$owriter = new MgSlimChunkWriter($this->app);
} else {
$owriter = new MgHttpChunkWriter();
}
//NOTE: This does not do a query to ascertain a total, this is already a pre-computed property of the selection set.
$total = $selection->GetSelectedFeaturesCount($layer, $layer->GetFeatureClassName());
if (strlen($propList) > 0) {
$tokens = explode(",", $propList);
$propNames = new MgStringCollection();
foreach ($tokens as $propName) {
$propNames->Add($propName);
}
$reader = $selection->GetSelectedFeatures($layer, $layer->GetFeatureClassName(), $propNames);
} else {
$reader = $selection->GetSelectedFeatures($layer, $layer->GetFeatureClassName(), $bMapped);
}
if ($pageSize > 0) {
$pageReader = new MgPaginatedFeatureReader($reader, $pageSize, $pageNo, $total);
$result = new MgReaderChunkedResult($featSvc, $pageReader, -1, $owriter, $this->app->localizer);
} else {
$result = new MgReaderChunkedResult($featSvc, $reader, -1, $owriter, $this->app->localizer);
}
$result->CheckAndSetDownloadHeaders($this->app, $format);
if ($transform != null) {
$result->SetTransform($transform);
}
if ($fmt === "html") {
$result->SetAttributeDisplayOrientation($orientation);
$result->SetHtmlParams($this->app);
}
$result->Output($format);
}
} else {
$owriter = new MgHttpChunkWriter();
$reader = new MgNullFeatureReader();
$result = new MgReaderChunkedResult($featSvc, $reader, -1, $owriter, $this->app->localizer);
if ($fmt === "html") {
$result->SetAttributeDisplayOrientation($orientation);
$result->SetHtmlParams($this->app);
}
$result->Output($format);
}
} catch (MgException $ex) {
$this->OnException($ex, $this->GetMimeTypeForFormat($format));
}
}
