function GetTransform()
{
$coordSysFactory = new MgCoordinateSystemFactory();
$resourceService = $this->site->CreateService(MgServiceType::ResourceService);
$featureService = $this->site->CreateService(MgServiceType::FeatureService);
$featureSourceId = $this->GetFeatureSource();
$wkt = null;
//Get the WKT from spatial context, because SDF only supports one spatial context it will be the first one
$scReader = $featureService->GetSpatialContexts($featureSourceId, true);
if ($scReader->ReadNext()) {
$wkt = $scReader->GetCoordinateSystemWkt();
}
$scReader->Close();
$map = new MgMap();
$map->Open($resourceService, $this->args['MAPNAME']);
if (null == $wkt) {
return null;
}
//It's bunk. Assume map SRS
if (strcmp($wkt, $map->GetMapSRS()) == 0) {
return null;
}
//Identical. No transformation needed
$source = $coordSysFactory->Create($map->GetMapSRS());
if (null != $wkt) {
$target = $coordSysFactory->Create($wkt);
}
return $coordSysFactory->GetTransform($source, $target);
}
function Execute()
{
$result = array();
$resourceService = $this->site->CreateService(MgServiceType::ResourceService);
$map = new MgMap();
$map->Open($resourceService, $this->args['MAPNAME']);
$layer = $map->GetLayers()->GetItem($this->args['LAYERNAME']);
$featureService = $this->site->CreateService(MgServiceType::FeatureService);
$resId = new MgResourceIdentifier($layer->GetFeatureSourceId());
$featureClass = $layer->GetFeatureClassName();
$featureGeometry = $layer->GetFeatureGeometryName();
// Initialize the coordinate system transform
$schemaAndClass = explode(":", $featureClass);
$classDef = $featureService->GetClassDefinition($resId, $schemaAndClass[0], $schemaAndClass[1]);
$geomProp = $classDef->GetProperties()->GetItem($featureGeometry);
$spatialContext = $geomProp->GetSpatialContextAssociation();
$csTransform = null;
$csInverseTransform = null;
$coordSysFactory = new MgCoordinateSystemFactory();
$scReader = $featureService->GetSpatialContexts($resId, false);
while ($scReader->ReadNext() && $csTransform == null) {
if ($scReader->GetName() == $spatialContext) {
$source = $coordSysFactory->Create($scReader->GetCoordinateSystemWkt());
$target = $coordSysFactory->Create($map->GetMapSRS());
$csTransform = new MgCoordinateSystemTransform($source, $target);
$csInverseTransform = new MgCoordinateSystemTransform($target, $source);
}
}
$scReader->Close();
// Execute the query
$queryMax = (int) $this->args['QUERYMAX'];
$queryOptions = new MgFeatureQueryOptions();
if ($this->args['USEPROPERTYFILTER'] == 'true') {
$propertyFilter = $this->args['PROPERTYNAME'];
if ($this->args['ISSTRING'] == 'true') {
$propertyFilter .= sprintf($this->strExpressions[$this->args['OPERATOR']], $this->args['VALUE']);
} else {
$propertyFilter .= sprintf($this->numExpressions[$this->args['OPERATOR']], $this->args['VALUE']);
}
$queryOptions->SetFilter($propertyFilter);
}
if ($this->args['USESPATIALFILTER'] == 'true') {
$polygon = $this->CreatePolygonFromGeomText($this->args['GEOMTEXT']);
$polygon = $polygon->Transform($csInverseTransform);
$queryOptions->SetSpatialFilter($featureGeometry, $polygon, MgFeatureSpatialOperations::Intersects);
}
$count = 0;
$geometryReaderWriter = new MgAgfReaderWriter();
$featureReader = $featureService->SelectFeatures($resId, $layer->GetFeatureClassName(), $queryOptions);
while ($featureReader->ReadNext() && ($queryMax <= 0 || $count < $queryMax)) {
$displayValue = $this->GetFeaturePropertyValue($featureReader, $this->args['OUTPUTPROPERTY']);
$byteReader = $featureReader->GetGeometry($featureGeometry);
$geometry = $geometryReaderWriter->Read($byteReader);
$centerPoint = $geometry->GetCentroid();
$centerPoint = $centerPoint->Transform($csTransform);
$idList = $this->GetFeatureIdList($map, $layer, $featureReader);
array_push($result, new Feature($displayValue, $centerPoint, $idList));
$count++;
}
return $result;
}
// Create a name property
$nameProperty = new MgDataPropertyDefinition("NAME");
$nameProperty->SetDataType(MgPropertyType::String);
// Add the name property to the class definition
$classDefinition->GetProperties()->Add($nameProperty);
// Create a geometry property
$geometryProperty = new MgGeometricPropertyDefinition($geometryPropertyName);
$geometryProperty->SetGeometryTypes(MgFeatureGeometricType::Surface);
// Add the geometry property to the class definition
$classDefinition->GetProperties()->Add($geometryProperty);
// Create a feature schema
$featureSchema = new MgFeatureSchema("SHP_Schema", "Line schema");
// Add the feature schema to the class definition
$featureSchema->GetClasses()->Add($classDefinition);
// Create the feature source
$wkt = $map->GetMapSRS();
$sdfParams = new MgCreateSdfParams("spatial context", $wkt, $featureSchema);
$featureService->CreateFeatureSource($resourceIdentifier, $sdfParams);
}
// Add the line to the feature source
$batchPropertyCollection = new MgBatchPropertyCollection();
$propertyCollection = MakeLine("Line A", $x0, $y0, $x1, $y1);
$batchPropertyCollection->Add($propertyCollection);
// Add the batch property collection to the feature source
$cmd = new MgInsertFeatures($layerName, $batchPropertyCollection);
$featureCommandCollection = new MgFeatureCommandCollection();
$featureCommandCollection->Add($cmd);
// Execute the "add" commands
$featureService->UpdateFeatures($resourceIdentifier, $featureCommandCollection, false);
//---------------------------------------------------//
$layerExists = DoesLayerExist($layerName, $map);
function DownloadMarkup()
{
$resourceService = $this->site->CreateService(MgServiceType::ResourceService);
$featureService = $this->site->CreateService(MgServiceType::FeatureService);
$markupLayerResId = new MgResourceIdentifier($this->args['MARKUPLAYER']);
$markupFsId = new MgResourceIdentifier($this->GetResourceIdPrefix() . $markupLayerResId->GetName() . '.FeatureSource');
$extension = $this->GetFileExtension($markupLayerResId->ToString());
if (strcmp($extension, ".zip") == 0) {
$dataList = $resourceService->EnumerateResourceData($markupFsId);
$doc = DOMDocument::LoadXML($dataList->ToString());
$dataItems = $doc->getElementsByTagName("Name");
$tmpFiles = array();
//Copy out all data files to a temp location
for ($i = 0; $i < $dataItems->length; $i++) {
$dataName = $dataItems->item($i)->nodeValue;
$byteReader = $resourceService->GetResourceData($markupFsId, $dataName);
//Sink to temp file
$tmpSink = new MgByteSink($byteReader);
$fileName = tempnam(sys_get_temp_dir(), $dataName);
$tmpSink->ToFile($fileName);
$tmpFiles[$dataName] = $fileName;
}
//Zip them up.
$zipName = $markupLayerResId->GetName() . $extension;
$zipPath = tempnam(sys_get_temp_dir(), $zipName);
$zip = new ZipArchive();
$zip->open($zipPath, ZIPARCHIVE::CREATE);
foreach ($tmpFiles as $dataName => $filePath) {
$dataNorm = strtolower($dataName);
//HACK: There must be some defect in MgFeatureService::CreateFeatureSource() for SHP
//files or the FDO provider, because even if we plug in a coord sys WKT when we create
//it, we get a blank prj file (both Windows/Linux). Re-uploading this same zip file back into
//the widget causes problems in Linux (markup features not rendered) because of the blank prj.
//
//So that's the problem. Here's the workaround: If we find a blank prj file as we're assembling
//the zip file for download, pump our current Map's WKT into the prj file before packaging it up
//
//That's what we were already doing when we called MgFeatureService::CreateFeatureSource(), but it
//or the provider didn't like it.
if (substr($dataNorm, strlen($dataNorm) - strlen("prj")) == "prj") {
$content = file_get_contents($filePath);
if (strlen($content) == 0) {
$map = new MgMap();
$map->Open($resourceService, $this->args['MAPNAME']);
$content = $map->GetMapSRS();
file_put_contents($filePath, $content);
}
}
$zip->addFile($filePath, $dataName);
}
$zip->close();
//Serve it up for download
$bs = new MgByteSource($zipPath);
$br = $bs->GetReader();
$len = $br->GetLength();
$outputBuffer = '';
$buffer = '';
while ($br->Read($buffer, 50000) != 0) {
$outputBuffer .= $buffer;
}
header("Content-Type: application/octet-stream");
header("Content-Disposition: attachment; filename={$zipName}");
header("Content-Length: " . strlen($outputBuffer));
echo $outputBuffer;
//Let's be nice and clean up after ourselves
unlink($zipPath);
foreach ($tmpFiles as $dataName => $filePath) {
unlink($filePath);
}
} else {
//Single file, make things easier!
$dataName = $markupLayerResId->GetName() . $extension;
$byteReader = $resourceService->GetResourceData($markupFsId, $dataName);
$len = $byteReader->GetLength();
$outputBuffer = '';
$buffer = '';
while ($byteReader->Read($buffer, 50000) != 0) {
$outputBuffer .= $buffer;
}
header("Content-Type: " . $byteReader->GetMimeType());
header("Content-Disposition: attachment; filename={$dataName}");
header("Content-Length: " . strlen($outputBuffer));
echo $outputBuffer;
}
}
$map = new MgMap($siteConnection);
$map->Open($mapName);
// Check for selection data passed via HTTP POST
if (isset($_POST['SELECTION']) && $_POST['SELECTION'] != '') {
$selection = new MgSelection($map, $_POST['SELECTION']);
$selectedLayers = $selection->GetLayers();
} else {
$selectedLayers = 0;
}
if ($selectedLayers) {
include 'bufferfunctions.php';
$bufferRingSize = 100;
// measured in metres
$bufferRingCount = 5;
// Set up some objects for coordinate conversion
$mapWktSrs = $map->GetMapSRS();
$agfReaderWriter = new MgAgfReaderWriter();
$wktReaderWriter = new MgWktReaderWriter();
$coordinateSystemFactory = new MgCoordinateSystemFactory();
$srs = $coordinateSystemFactory->Create($mapWktSrs);
$srsMeasure = $srs->GetMeasure();
// Check for a buffer layer. If it exists, delete
// the current features.
// If it does not exist, create a feature source and
// a layer to hold the buffer.
/*
// Old way, pre MapGuide OS 2.0. Kept here for reference
try
{
$bufferLayer = $map->GetLayers()->GetItem('Buffer');
$bufferFeatureResId = new MgResourceIdentifier($bufferLayer->GetFeatureSourceId());
//create an empty selection object and store it in the session repository
$sel = new MgSelection($map);
$sel->Save($resourceService, $mapName);
$map->Save($resourceService, $mapStateId);
} else {
$map = new MgMap();
$map->Open($resourceService, $mapName);
$mapTitle = $map->GetName();
$mapid = $map->GetMapDefinition()->ToString();
}
//$sessionId = $map->GetSessionId();
//$mapName = $map->GetName() ;
$extents = $map->GetMapExtent();
@($oMin = $extents->GetLowerLeftCoordinate());
@($oMax = $extents->GetUpperRightCoordinate());
@($srs = $map->GetMapSRS());
if ($srs != "") {
@($csFactory = new MgCoordinateSystemFactory());
@($cs = $csFactory->Create($srs));
@($metersPerUnit = $cs->ConvertCoordinateSystemUnitsToMeters(1.0));
// $unitsType = $cs->GetUnits();
} else {
$metersPerUnit = 1.0;
//$unitsType = "Meters";
}
header('Content-type: text/x-json');
header('X-JSON: true');
echo "{";
echo "sessionId:'{$sessionID}',";
echo "mapId:'{$mapid}',";
echo "metersPerUnit:{$metersPerUnit},";
public function GetTileXYZ($resId, $groupName, $x, $y, $z, $type, $layerNames = NULL)
{
$fmt = $this->ValidateRepresentation($type, array("json", "png", "png8", "jpg", "gif"));
$path = self::GetTilePath($this->app, $resId, $groupName, $z, $x, $y, $type, $layerNames);
clearstatcache();
$dir = dirname($path);
$lockPath = "{$dir}/lock_" . $y . ".lck";
$attempts = 0;
while (!@is_dir($dir)) {
try {
mkdir($dir, 0777, true);
} catch (Exception $e) {
//Another tile request may have already created this since
$attempts++;
//Bail after MAX_RETRY_ATTEMPTS
if ($attempts >= self::MAX_RETRY_ATTEMPTS) {
$this->ServerError($this->app->localizer->getText("E_FAILED_TO_CREATE_DIR_AFTER_N_ATTEMPTS", $attempts), $this->GetMimeTypeForFormat($type));
}
}
}
//If there's a dangling lock file, attempt to remove it
if (file_exists($lockPath)) {
unlink($lockPath);
}
$fpLockFile = fopen($lockPath, "a+");
//Message of any exception caught will be set to this variable
$tileError = null;
$requestId = rand();
$this->app->log->debug("({$requestId}) Checking if {$path} exists");
$attempts = 0;
while (!file_exists($path)) {
//Bail after MAX_RETRY_ATTEMPTS
if ($attempts >= self::MAX_RETRY_ATTEMPTS) {
$this->ServerError($this->app->localizer->getText("E_FAILED_TO_GENERATE_TILE_AFTER_N_ATTEMPTS", $attempts), $this->GetMimeTypeForFormat($type));
}
$attempts++;
$this->app->log->debug("({$requestId}) {$path} does not exist. Locking for writing");
$bLocked = false;
flock($fpLockFile, LOCK_EX);
fwrite($fpLockFile, ".");
$bLocked = true;
$this->app->log->debug("({$requestId}) Acquired lock for {$path}. Checking if path exists again.");
//check once more to see if the cache file was created while waiting for
//the lock
clearstatcache();
if (!file_exists($path)) {
try {
$this->app->log->debug("({$requestId}) Rendering tile to {$path}");
$bOldPath = true;
if ($type != "json") {
//if this is MGOS 3.0 and we're dealing with a tile set, we invoke GETTILEIMAGE as that we can pass in Tile Set Definition
//resource ids without issues. We cannot create MgMaps from Tile Set Definitions that are not using the default tile provider.
//
//The given tile set is assumed to be using the XYZ provider, the case where the Tile Set Definition is using the default provider
//is not handled
if ($this->app->MG_VERSION[0] >= 3 && $resId->GetResourceType() == "TileSetDefinition") {
$bOldPath = false;
$sessionId = "";
if ($resId->GetRepositoryType() === MgRepositoryType::Session && $this->app->request->get("session") == null) {
$sessionId = $resId->GetRepositoryName();
}
$resIdStr = $resId->ToString();
$that = $this;
$this->EnsureAuthenticationForHttp(function ($req, $param) use($that, $resIdStr, $groupName, $x, $y, $z, $requestId, $path) {
$param->AddParameter("OPERATION", "GETTILEIMAGE");
$param->AddParameter("VERSION", "1.2.0");
$param->AddParameter("MAPDEFINITION", $resIdStr);
$param->AddParameter("BASEMAPLAYERGROUPNAME", $groupName);
$param->AddParameter("SCALEINDEX", $z);
$param->AddParameter("TILEROW", $x);
$param->AddParameter("TILECOL", $y);
$that->app->log->debug("({$requestId}) Executing GETTILEIMAGE");
$that->ExecuteHttpRequest($req, function ($result, $status) use($path) {
if ($status == 200) {
//Need to dump the rendered tile to the specified path so the caching stuff below can still do its thing
$resultObj = $result->GetResultObject();
$sink = new MgByteSink($resultObj);
$sink->ToFile($path);
}
});
}, true, "", $sessionId);
//Tile access can be anonymous, so allow for it if credentials/session specified, but if this is a session-based Map Definition, use the session id as the nominated one
}
}
//Pre MGOS 3.0 code path
if ($bOldPath) {
$this->app->log->debug("({$requestId}) Going down old code path");
$this->EnsureAuthenticationForSite("", true);
$siteConn = new MgSiteConnection();
$siteConn->Open($this->userInfo);
$map = new MgMap($siteConn);
$map->Create($resId, "VectorTileMap");
$renderSvc = $siteConn->CreateService(MgServiceType::RenderingService);
$groups = $map->GetLayerGroups();
$baseGroup = $groups->GetItem($groupName);
//Will throw MgObjectNotFoundException -> 404 if no such group exists
$factory = new MgCoordinateSystemFactory();
$mapCsWkt = $map->GetMapSRS();
$mapCs = $factory->Create($mapCsWkt);
$mapExtent = $map->GetMapExtent();
$mapExLL = $mapExtent->GetLowerLeftCoordinate();
$mapExUR = $mapExtent->GetUpperRightCoordinate();
$metersPerUnit = $mapCs->ConvertCoordinateSystemUnitsToMeters(1.0);
$this->app->log->debug("({$requestId}) Calc bounds from XYZ");
//XYZ to lat/lon math. From this we can convert to the bounds in the map's CS
//
//Source: http://wiki.openstreetmap.org/wiki/Slippy_map_tilenames
$n = pow(2, $z);
$lonMin = $x / $n * 360.0 - 180.0;
$latMin = rad2deg(atan(sinh(pi() * (1 - 2 * $y / $n))));
$lonMax = ($x + 1) / $n * 360.0 - 180.0;
$latMax = rad2deg(atan(sinh(pi() * (1 - 2 * ($y + 1) / $n))));
$boundsMinX = min($lonMin, $lonMax);
$boundsMinY = min($latMin, $latMax);
$boundsMaxX = max($lonMax, $lonMin);
$boundsMaxY = max($latMax, $latMin);
if ($mapCs->GetCsCode() != "LL84") {
$llCs = $factory->CreateFromCode("LL84");
$trans = $factory->GetTransform($llCs, $mapCs);
$ul = $trans->Transform($lonMin, $latMin);
$lr = $trans->Transform($lonMax, $latMax);
$boundsMinX = min($lr->GetX(), $ul->GetX());
$boundsMinY = min($lr->GetY(), $ul->GetY());
$boundsMaxX = max($lr->GetX(), $ul->GetX());
$boundsMaxY = max($lr->GetY(), $ul->GetY());
}
//Set all layers under group to be visible
$layers = $map->GetLayers();
$layerCount = $layers->GetCount();
$groupCount = $groups->GetCount();
//Turn all groups that are not the given group to be hidden
for ($i = 0; $i < $groupCount; $i++) {
$group = $groups->GetItem($i);
if ($group->GetName() != $groupName) {
$group->SetVisible(false);
} else {
$group->SetVisible(true);
}
}
for ($i = 0; $i < $layerCount; $i++) {
$layer = $layers->GetItem($i);
$group = $layer->GetGroup();
if (null == $group) {
continue;
}
if ($group->GetName() != $groupName && $layer->GetLayerType() == MgLayerType::Dynamic) {
$layer->SetVisible(false);
continue;
}
if ($layer->GetLayerType() == MgLayerType::Dynamic) {
$layer->SetVisible(true);
}
}
if ($type == "json") {
//error_log("($requestId) Render vector tile");
$this->PutVectorTileXYZ($map, $groupName, $siteConn, $metersPerUnit, $factory, $path, $boundsMinX, $boundsMinY, $boundsMaxX, $boundsMaxY, $layerNames);
} else {
$format = strtoupper($type);
//error_log("($requestId) Render image tile");
$this->PutTileImageXYZ($map, $groupName, $renderSvc, $path, $format, $boundsMinX, $boundsMinY, $boundsMaxX, $boundsMaxY, $layerNames, $requestId);
}
}
} catch (MgException $ex) {
if ($bLocked) {
$this->app->log->debug("({$requestId}) MgException caught " . $ex->GetDetails() . "\n" . $ex->getTraceAsString() . "\n. Releasing lock for {$path}");
$tileError = $ex->GetExceptionMessage();
flock($fpLockFile, LOCK_UN);
$bLocked = false;
}
if ($ex instanceof MgResourceNotFoundException || $ex instanceof MgObjectNotFoundException) {
$this->NotFound($ex->GetExceptionMessage(), $this->GetMimeTypeForFormat($fmt));
} else {
if ($ex instanceof MgConnectionFailedException) {
$this->ServiceUnavailable($ex->GetExceptionMessage(), $this->GetMimeTypeForFormat($fmt));
}
}
} catch (Exception $ex) {
if ($bLocked) {
$tileError = get_class($ex) . " - " . $ex->getMessage();
$this->app->log->debug("({$requestId}) Exception caught ({$tileError}). Releasing lock for {$path}");
flock($fpLockFile, LOCK_UN);
$bLocked = false;
}
}
}
if ($bLocked) {
$this->app->log->debug("({$requestId}) Releasing lock for {$path}");
flock($fpLockFile, LOCK_UN);
$bLocked = false;
}
}
//An exception occurred, try to clean up lock before bailing
if ($tileError != null) {
try {
fclose($fpLockFile);
unlink($lockPath);
} catch (Exception $ex) {
$this->app->log->debug("({$requestId}) Failed to delete lock file. Perhaps another concurrent request to the same tile is happening?");
}
throw new Exception($tileError);
}
$modTime = filemtime($path);
$this->app->lastModified($modTime);
$this->app->log->debug("({$requestId}) Acquiring shared lock for {$path}");
//acquire shared lock for reading to prevent a problem that could occur
//if a tile exists but is only partially generated.
flock($fpLockFile, LOCK_SH);
$this->app->log->debug("({$requestId}) Outputting {$path}");
$ext = strtoupper(pathinfo($path, PATHINFO_EXTENSION));
$mimeType = "";
switch ($ext) {
case "PNG":
//MgImageFormats::Png:
$mimeType = MgMimeType::Png;
break;
case "GIF":
//MgImageFormats::Gif:
$mimeType = MgMimeType::Gif;
break;
case "JPG":
//MgImageFormats::Jpeg:
$mimeType = MgMimeType::Jpeg;
break;
case "JSON":
$mimeType = MgMimeType::Json;
break;
}
$this->app->response->header("Content-Type", $mimeType);
$this->app->expires("+6 months");
$this->app->response->header("Cache-Control", "max-age=31536000, must-revalidate");
$this->app->response->setBody(file_get_contents($path));
$this->app->log->debug("({$requestId}) Releasing shared lock for {$path}");
//Release lock
flock($fpLockFile, LOCK_UN);
//Try to delete the lock file
try {
fclose($fpLockFile);
unlink($lockPath);
} catch (Exception $ex) {
$this->app->log->debug("({$requestId}) Failed to delete lock file. Perhaps another concurrent request to the same tile is happening?");
}
}
$mapCenterX = $args['CENTERX'];
$mapCenterY = $args['CENTERY'];
try {
// Initialize the Web Extensions and connect to the Server using
// the Web Extensions session identifier stored in PHP session state.
MgInitializeWebTier($webconfigFilePath);
$userInfo = new MgUserInformation($sessionId);
$siteConnection = new MgSiteConnection();
$siteConnection->Open($userInfo);
// Create the necessary services.
$resourceService = $siteConnection->CreateService(MgServiceType::ResourceService);
$renderingService = $siteConnection->CreateService(MgServiceType::RenderingService);
// Open the map and get its SRS
$map = new MgMap();
$map->Open($resourceService, $mapName);
$srsWkt = $map->GetMapSRS();
$coordinateSystemFactory = new MgCoordinateSystemFactory();
$srs = $coordinateSystemFactory->Create($srsWkt);
if ($xmlSelection != '') {
$selection = new MgSelection($map, $xmlSelection);
} else {
$selection = new MgSelection($map);
}
$color = new MgColor(205, 189, 156);
$geometryFactory = new MgGeometryFactory();
$mapCenterCoordinate = $geometryFactory->CreateCoordinateXY($mapCenterX, $mapCenterY);
// Convert the height in pixels to map units.
// Create an envelope that contains the image area to display.
$displayInInches = $imageHeight / 96;
$displayInMeters = $displayInInches * 0.0254;
$mapHeightInMeters = $displayInMeters * $mapScale;
