<?php
/**
* Utilities.php
*
* $Id: Utilities.php 1302 2008-03-04 22:07:33Z madair $
*
* Copyright (c) 2007, DM Solutions Group Inc.
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
/*****************************************************************************
* Purpose: Utility Functions for the MapGuide API
*****************************************************************************/
//------------------------------------------------------------------------------
function CreateFeatureSource($map, $dataSourceId, $featureName, $featureService, $geomType, $schema="") {
//create feature source
$classDef = new MgClassDefinition();
$classDef->SetName($featureName);
$classDef->SetDescription($featureName . " feature layer");
$classDef->SetDefaultGeometryPropertyName("GEOM");
//Set KEY property
$prop = new MgDataPropertyDefinition("KEY");
$prop->SetDataType(MgPropertyType::Int32);
$prop->SetAutoGeneration(true);
$prop->SetReadOnly(true);
$classDef->GetIdentityProperties()->Add($prop);
$classDef->GetProperties()->Add($prop);
$prop = new MgGeometricPropertyDefinition("GEOM");
$prop->SetGeometryTypes($geomType);
$classDef->GetProperties()->Add($prop);
//Create the schema
if ($schema == "")
$schema = "DrawToolSchema";
$schema = new MgFeatureSchema($schema, "Temporary draw layer schema");
$schema->GetClasses()->Add($classDef);
//finally, creation of the feature source
$params = new MgCreateSdfParams("LatLong", GetMapSRS($map), $schema);
$featureService->CreateFeatureSource($dataSourceId, $params);
}
function ClearFeatureSource($featureService, $dataSourceId, $featureName) {
$deleteCmd = new MgDeleteFeatures($featureName, "KEY > 0");
$commands = new MgFeatureCommandCollection();
$commands->Add($deleteCmd);
$featureService->UpdateFeatures($dataSourceId, $commands, false);
}
//------------------------------------------------------------------------------
//duplicate a layer in the session so that it can refer to a different session
//feature source.
//the session id and the feature source are assumed to have the same path as their
//repository counterparts but $suffix is appended to the names.
function DuplicateSessionLayer($map, $resourceService, $sourceLayerId, $suffix) {
//create the new session MgResourceIdentifier
$destinationLayerId = CreateSessionResourceId($sourceLayerId, $suffix);
//copy content from source layer
$contentReader = $resourceService->GetResourceContent($sourceLayerId);
$layerContent = $contentReader->ToString();
//set the feature source this layer references -- must be in the session
//the feature source need not exist before calling this function
$sourceLayer = new MgLayer($sourceLayerId, $resourceService);
$sourceFeatureSourceId = new MgResourceIdentifier($sourceLayer->GetFeatureSourceId());
$destinationFeatureSourceId = CreateSessionResourceId($sourceFeatureSourceId, $suffix);
//replace the featuresourceid and write xml to the session copy
$layerContent = str_replace($sourceFeatureSourceId->ToString(),
$destinationFeatureSourceId->ToString(),
$layerContent);
$byteSource = new MgByteSource($layerContent, strlen($layerContent));
$resourceService->SetResource($destinationLayerId, $byteSource->GetReader(), null);
//instantiate the new layer from its MgResourceIdentifier
$layer = new MgLayer($destinationLayerId, $resourceService);
//add the edit layer to the session map and set it to redraw but not be visible in the legend
$layerCollection=$map->GetLayers();
$originalLayer = FindLayer($layerCollection,$sourceLayer->GetLayerDefinition()->ToString());
$nPosition = $layerCollection->IndexOf($originalLayer);
$layerCollection->Insert($nPosition,$layer);
$layer->SetDisplayInLegend(false);
$layer->SetSelectable(true);
$layer->ForceRefresh();
//OR
//remove the source layer from the session map and replace it with the
//session copy
//ReplaceLayer($map, $sourceLayer, $layer);
//save the session map
try{
$map->Save($resourceService);
}
catch (MgException $e)
{
echo "ERROR: " . $e->GetMessage() . "n";
echo $e->GetDetails() . "n";
echo $e->GetStackTrace() . "n";
}
return $layer;
}
//------------------------------------------------------------------------------
//duplicate a layer in the session so that it can refer to a session feature source
//the session id and the feature source are assumed to have the same path as their
//repository counterparts
function CopyLayerToSession($map, $resourceService, $libraryLayerId) {
//create the session MgResourceIdentifier
try{
$destinationLayerId = ToggleRepository($libraryLayerId);
$destinationLayerId->SetName($destinationLayerId->GetName().'-edit');
//copy content from library layer
$contentReader = $resourceService->GetResourceContent($libraryLayerId);
$layerContent = $contentReader->ToString();
//set the feature source this layer references -- must be in the session
//the feature source need not exist before calling this function
$libraryLayer = new MgLayer($libraryLayerId, $resourceService);
$libraryFeatureSourceId = new MgResourceIdentifier($libraryLayer->GetFeatureSourceId());
$destinationFeatureSourceId = ToggleRepository($libraryFeatureSourceId);
//replace the featuresourceid and write xml to the session copy
$layerContent = str_replace($libraryFeatureSourceId->ToString(),
$destinationFeatureSourceId->ToString(),
$layerContent);
$byteSource = new MgByteSource($layerContent, strlen($layerContent));
$resourceService->SetResource($destinationLayerId, $byteSource->GetReader(), null);
//instantiate the new layer from its MgResourceIdentifier
$layer = new MgLayer($destinationLayerId, $resourceService);
//add the edit layer to the session map and set it to redraw but not be visible in the legend
$layerCollection=$map->GetLayers();
$originalLayer = FindLayer($layerCollection,$libraryLayer->GetLayerDefinition()->ToString());
$nPosition = $layerCollection->IndexOf($originalLayer);
$layerCollection->Insert($nPosition,$layer);
$layer->SetDisplayInLegend(false);
$layer->SetSelectable(true);
$layer->ForceRefresh();
//OR
//remove the library layer from the session map and replace it with the
//session copy
//ReplaceLayer($map, $libraryLayer, $layer);
//save the session map
$map->Save($resourceService);
}
catch (MgException $e)
{
echo "CopyLayerToSession threw exception\n";
echo "ERROR: " . $e->GetMessage() . "n";
echo $e->GetDetails() . "n";
echo $e->GetStackTrace() . "n";
}
return $layer;
}
//------------------------------------------------------------------------------
//duplicate a layer from the session in the repository and make it point to a
//repository feature source. This makes a layer change persist across sessions.
function CopyLayerFromSession($map, $resourceService, $sessionLayerId) {
$destinationLayerId = ToggleRepository($sessionLayerId);
//copy content from session layer
$contentReader = $resourceService->GetResourceContent($sessionLayerId);
$layerContent = $contentReader->ToString();
$byteSource = new MgByteSource($layerContent, strlen($layerContent));
$resourceService->SetResource($destinationLayerId, $byteSource->GetReader(), null);
//instantiate the new layer from its MgResourceIdentifier
$layer = new MgLayer($destinationLayerId, $resourceService);
//set the feature source this layer references -- must be in the session
$sessionLayer = new MgLayer($sessionLayerId, $resourceService);
$destinationFeatureSourceId = ToggleRepository($sessionLayer->GetFeatureSourceId());
$layer->SetFeatureSourceId($destinationFeatureSourceId);
$layer->ForceRefresh();
//remove the session layer from the session map and replace it with the
//library copy
ReplaceLayer($map, $sessionLayer, $layer);
//save the session map
$map->Save($resourceService);
return $layer;
}
//------------------------------------------------------------------------------
//remove a session layer and point the session map file back to the repository's
//original layer. Useful for discarding edit changes.
function DiscardSessionLayer($map, $resourceService, $sessionLayerId) {
$originalLayerId = ToggleRepository($sessionLayerId);
//instantiate the original and session layers from their MgResourceIdentifier
//and swap them
$layer = new MgLayer($originalLayerId, $resourceService);
$sessionLayer = new MgLayer($sessionLayerId, $resourceService);
ReplaceLayer($map, $layer, $sessionLayer);
$layer->ForceRefresh();
//save the session map
$map->Save($resourceService);
}
//------------------------------------------------------------------------------
//replace one layer with another in the session map
function ReplaceLayer($map, &$old, &$new) {
$layerCollection=$map->GetLayers();
$originalLayer = FindLayer($layerCollection, $old->GetLayerDefinition()->ToString());
$nPosition = $layerCollection->IndexOf($originalLayer);
$layerCollection->Remove($originalLayer);
$layerCollection->Insert($nPosition,$new);
return $nPosition;
}
//------------------------------------------------------------------------------
function GetMapSrs($map)
{
$srs = $map->GetMapSRS();
if($srs != "")
return $srs;
//SRS is currently optional. Waiting for this to change, set the default SRS to ArbitrayXY meters
//
return "LOCALCS[\"*XY-MT*\",LOCAL_DATUM[\"*X-Y*\",10000],UNIT[\"Meter\", 1],AXIS[\"X\",EAST],AXIS[\"Y\",NORTH]]";
}
//------------------------------------------------------------------------------
function BuildLayerDefinitionContent($dataSource, $featureName, $tip)
{
$xmlLineTemplate = '<?xml version="1.0" encoding="UTF-8"?>
<LayerDefinition version="1.0.0">
<FeatureLayerDefinition>
<Metadata />
<LegendBitmap/>
<ResourceId>%s</ResourceId>
<FeatureClass>%s</FeatureClass>
<Key/>
<Geometry>%s</Geometry>
<MapTip>%s</MapTip>
<Filter></Filter>
<FeatureScaleRange>
<MinScale>0</MinScale>
<MaxScale>1000000000000</MaxScale>
<LineTypeStyle>
<FeatureClassName>Line</FeatureClassName>
<LineRule>
<LineSymbolization>
<Stroke>
<LineStyle>Solid</LineStyle>
<Thickness>%s</Thickness>
<Color>%s</Color>
<Unit>Points</Unit>
</Stroke>
</LineSymbolization>
<LegendLabel/>
<LegendBitmap/>
<Filter/>
<Label/>
</LineRule>
</LineTypeStyle>
</FeatureScaleRange>
</FeatureLayerDefinition>
</LayerDefinition>
';
$layerTempl = $xmlLineTemplate;
$xmlStr = sprintf($layerTempl,
$dataSource,
$featureName,
"GEOM",
$tip,
1,
"ff0000");
$src = new MgByteSource($xmlStr, strlen($xmlStr));
return $src->GetReader();
}
/////////////////////////////////////////////////////////////////////////////////
//Repository Manipulation Utilities
/////////////////////////////////////////////////////////////////////////////////
//------------------------------------------------------------------------------
function ResourceExists($resourceSrvc, $dataSourceId)
{
try
{
$cnt = $resourceSrvc->GetResourceContent($dataSourceId);
return true;
}
catch(MgResourceNotFoundException $rnfe)
{
return false;
}
}
function DataSourceExists($resourceSrvc, $dataSourceId) {
return ResourceExists($resourceSrvc, $dataSourceId);
}
//------------------------------------------------------------------------------
//create a new MgResourceIdentifier for the session from a Library MgResourceIdentifier
//or vice versa
function ToggleRepository($originalResourceId)
{
$newResourceID = new MgResourceIdentifier('Library://');
if ($originalResourceId->GetRepositoryType() == "Library") {
$newResourceID->SetRepositoryType("Session");
//$newResourceID->SetRepositoryName($_GET['session']);
$newResourceID->SetRepositoryName($GLOBALS['sessionID']);
} else {
$newResourceID->SetRepositoryType("Library");
}
$newResourceID->SetPath($originalResourceId->GetPath());
$newResourceID->SetName($originalResourceId->GetName());
$newResourceID->SetResourceType($originalResourceId->GetResourceType());
//TODO: trap errors
$newResourceID->Validate();
return $newResourceID;
}
//------------------------------------------------------------------------------
//create a new MgResourceIdentifier for the session with a given suffix
function CreateSessionResourceId($originalResourceId, $suffix)
{
$newResourceID = new MgResourceIdentifier('Library://');
$newResourceID->SetRepositoryType("Session");
$newResourceID->SetRepositoryName($GLOBALS['sessionID']);
$newResourceID->SetPath($originalResourceId->GetPath());
$newResourceID->SetName($originalResourceId->GetName() . $suffix);
$newResourceID->SetResourceType($originalResourceId->GetResourceType());
//TODO: trap errors
try {
$newResourceID->Validate();
}
catch (MgException $e) {
echo "ERROR: " . $e->GetMessage() . "n";
echo $e->GetDetails() . "n";
echo $e->GetStackTrace() . "n";
}
return $newResourceID;
}
//------------------------------------------------------------------------------
function FindLayer($layers, $layerDef)
{
$layer = null;
for($i = 0; $i < $layers->GetCount(); $i++)
{
$layer1 = $layers->GetItem($i);
if($layer1->GetLayerDefinition()->ToString() == $layerDef)
{
$layer = $layer1;
break;
}
}
return $layer;
}
//------------------------------------------------------------------------------
//get the attributes that correspond to a layer definition
//returns associative array of attributes.
function GetFeatureSourceAttributes($map, $layerResourceId, $featureService) {
$aAttributes = array();
$layerDef = $layerResourceId->ToString();
$layers = $map->GetLayers();
$layer = FindLayer($layers, $layerDef);
if ($layer == NULL) {
return $aAttributes;
}
$dataSourceId = new MgResourceIdentifier($layer->GetFeatureSourceId());
$agf = new MgAgfReaderWriter();
//get class definition from the featureSource
$classDefinition = GetFeatureClassDefinition($featureService, $layer, $dataSourceId);
//MgPropertyDefinition classProps
$classProps = $classDefinition->GetProperties();
$identProps = $classDefinition->GetIdentityProperties();
$featureGeometryName = $layer->GetFeatureGeometryName();
$drawProps = new MgPropertyCollection();
for ($i=0; $i< $classProps->GetCount(); $i++)
{
$prop = $classProps->GetItem($i);
if ($prop->GetPropertyType() == MgFeaturePropertyType::GeometricProperty)
{
//get the type of class to determine geometry
//TODO: use bitwise comparison?
$featureClass = $prop->GetGeometryTypes();
if ($featureClass == MgFeatureGeometricType::Surface) {
$aAttributes[$i] = 'surface';
} elseif ($featureClass == MgFeatureGeometricType::Curve) {
$aAttributes[$i] = 'curve';
} elseif ($featureClass == MgFeatureGeometricType::Point) {
$aAttributes[$i] = 'point';
}
} elseif ($prop->GetPropertyType() == MgFeaturePropertyType::DataProperty) {
//therefore this is an MgDataPropertyDefinition subclassed object
$aAttributes[$i] = array('name' => substr($prop->GetQualifiedName(),
stripos($prop->GetQualifiedName(),'.') + 1),
'description' => $prop->GetDescription(),
'datatype' => $prop->GetDataType(),
'readonly' => $prop->GetReadOnly(),
'length' => $prop->GetLength(),
'default' => $prop->GetDefaultValue(),
'precision' => $prop->GetPrecision(),
'scale' => $prop->GetScale(),
'nullable' => $prop->GetNullable(),
'identity' => $identProps->IndexOf($prop->GetName()) != -1
);
} else {
echo 'Found Other Property:';
echo $prop->GetQualifiedName();
echo '<BR>';
}
}
return $aAttributes;
}
//------------------------------------------------------------------------------
function add_layer_resource_to_map($layerResourceID,
$resourceService,
$layerDef,
$layerLegendLabel,
&$map)
//Addsalayerdefition(whichcanbestoredeitherinthe
//Libraryorasessionrepository)tothemap.
//Returnsthelayer.
{
$newLayer = new MgLayer($layerResourceID, $resourceService);
//Add the new layer to the map's layer collection
$newLayer->SetName($layerLegendLabel);
$newLayer->SetVisible(true);
$newLayer->SetLegendLabel($layerLegendLabel);
$newLayer->SetDisplayInLegend(true);
$layerCollection=$map->GetLayers();
if(!FindLayer($layerCollection,$layerDef))
{
//Insertthenewlayeratposition0soitisat
//thetopofthedrawingorder
$layerCollection->Insert(0,$newLayer);
}
return $newLayer;
}
function CreateDataPropertyForType($property) {
switch ($property->GetDataType())
{
case MgPropertyType::Null :
return null;
break;
case MgPropertyType::Boolean :
return new MgBooleanProperty($property->GetName(), false);
break;
case MgPropertyType::Byte :
return new MgByteProperty($property->GetName(), 0);
break;
case MgPropertyType::DateTime :
return new MgDateTimeProperty($property->GetName(), new MgDateTime());
break;
case MgPropertyType::Single :
return new MgSingleProperty($property->GetName(), 0);
break;
case MgPropertyType::Double :
return new MgDoubleProperty($property->GetName(), 0);
break;
case MgPropertyType::Int16 :
return new MgInt16Property($property->GetName(), 0);
break;
case MgPropertyType::Int32 :
return new MgInt32Property($property->GetName(), 0);
break;
case MgPropertyType::Int64 :
return new MgInt64Property($property->GetName(), 0);
break;
case MgPropertyType::String :
return new MgStringProperty($property->GetName(), '');
break;
case MgPropertyType::Blob :
$byteSource = new MgByteSource("",0);
return new MgBlobProperty($property->GetName(), $byteSource->GetReader());
break;
case MgPropertyType::Clob :
$byteSource = new MgByteSource("",0);
return new MgClobProperty($property->GetName(), $byteSource->GetReader());
break;
default :
return null;
}
}
//-----------------------------------------------------------------
//function GetFeatureClassAndSchema
//@param MgFeatureService featureService
//@param MgResourceIdentifier dataSourceId
//@param MgLayer layer
//@return the classdefinition reference.
//
//@desc Get class definition and schema from the layer.
//@desc This works around changes between MG 1.0.1 and 1.0.2
//@desc described in MG341 (see mapguide.osego.org)
//@desc This function can be removed when all servers are updated.
//------------------------------------------------------------------
function GetFeatureClassDefinition($featureService, $layer, $dataSourceId){
$qualifiedClass = $layer->GetFeatureClassName();
if (strpos($qualifiedClass, ':') === false ) {
$class = $qualifiedClass;
$schema = $featureService->GetSchemas($dataSourceId)->GetItem(0);
} else {
list($schema, $class) = explode(':', $qualifiedClass);
}
return $featureService->GetClassDefinition($dataSourceId, $schema, $class);
}
//-----------------------------------------------------------------
//function GetLayerTypes
//@param MgFeatureService featureService
//@param MgLayer layer
//@return the layer types as an array.
//
//@desc utility function to determine the set of allowed feature types for a layer's
//@desc feature source.
//@desc N.B. this is a workaround because the MgLayer::GetLayerType function seems to
//@desc produce the same answer (1) for all layer types.
//------------------------------------------------------------------
function GetLayerTypes($featureService, $layer) {
$aLayerTypes = array();
try {
$dataSourceId = new MgResourceIdentifier($layer->GetFeatureSourceId());
if($dataSourceId->GetResourceType() != MgResourceType::DrawingSource)
{
//get class definition from the featureSource
$classDefinition = GetFeatureClassDefinition($featureService, $layer, $dataSourceId);
//MgPropertyDefinition classProps
$classProps = $classDefinition->GetProperties();
$aLayerTypes = array();
for ($i=0; $i< $classProps->GetCount(); $i++)
{
$prop = $classProps->GetItem($i);
if ($prop->GetPropertyType() == MgFeaturePropertyType::GeometricProperty) {
$featureClass = $prop->GetGeometryTypes();
if ($featureClass & MgFeatureGeometricType::Surface) {
array_push($aLayerTypes, '2'/*'surface'*/);
}
if ($featureClass & MgFeatureGeometricType::Curve) {
array_push($aLayerTypes, '1'/*'curve'*/);
}
if ($featureClass & MgFeatureGeometricType::Solid) {
array_push($aLayerTypes, '3'/*'solid'*/); //could use surface here for editing purposes?
}
if ($featureClass & MgFeatureGeometricType::Point){
array_push($aLayerTypes, '0'/*'point'*/);
}
break;
} else if ($prop->GetPropertyType() == MgFeaturePropertyType::RasterProperty) {
array_push($aLayerTypes, '4' /* raster */);
}
}
}
else
{
array_push($aLayerTypes, '5' /* DWF */);
}
} catch (MgException $e) { }
return $aLayerTypes;
}
/* retrieve the property mappings for a layer */
function GetLayerPropertyMappings($resourceService, $layer) {
$mappings = array();
$byteReader = $resourceService->GetResourceContent($layer->GetLayerDefinition());
$xmldoc = DOMDocument::loadXML(ByteReaderToString($byteReader));
$mappingNodeList = $xmldoc->getElementsByTagName('PropertyMapping');
for ($i=0; $i<$mappingNodeList->length; $i++) {
$mapping = $mappingNodeList->item($i);
$nameElt = $mapping->getElementsByTagName('Name');
$name = $nameElt->item(0)->nodeValue;
$valueElt = $mapping->getElementsByTagName('Value');
$value = $valueElt->item(0)->nodeValue;
$mappings[$name] = $value;
}
return $mappings;
}
/* retrieve the property mappings for a layer */
function IsLayerEditable($resourceService, $layer) {
$result = true;
$dataSourceId = new MgResourceIdentifier($layer->GetFeatureSourceId());
$byteReader = $resourceService->GetResourceContent($dataSourceId);
$xmldoc = DOMDocument::loadXML(ByteReaderToString($byteReader));
$parameterList = $xmldoc->getElementsByTagName('Parameter');
for ($i=0; $i<$parameterList->length; $i++) {
$parameter = $parameterList->item($i);
$nameElt = $parameter->getElementsByTagName('Name');
$name = $nameElt->item(0)->nodeValue;
if ($name != 'ReadOnly') {
continue;
} else {
$valueElt = $parameter->getElementsByTagName('Value');
$value = $valueElt->item(0)->nodeValue;
$result = (strcasecmp($value, 'TRUE') == 0) ? false : true;
break;
}
}
return $result;
}
function ByteReaderToString($byteReader)
{
$buffer = '';
do
{
$data = str_pad("\0", 50000, "\0");
$len = $byteReader->Read($data, 50000);
if ($len > 0)
{
$buffer = $buffer . substr($data, 0, $len);
}
} while ($len > 0);
return $buffer;
}
function GetPropertyValueFromFeatReader($featureReader, $propertyType, $propertyName)
{
$val = "";
if ($propertyType == null) {
$propertyType = $featureReader->GetPropertyType($propertyName);
}
try {
switch ($propertyType)
{
case MgPropertyType::Null :
//fwrite($logFileHandle, "$propertyName is a null propertyn");
$val= "";
break;
case MgPropertyType::Boolean :
$val = $featureReader->GetBoolean($propertyName);
//$valStr = printBoolean($val);
break;
case MgPropertyType::Byte :
$val = $featureReader->GetByte($propertyName);
break;
case MgPropertyType::DateTime :
$dateTime = $featureReader->GetDateTime($propertyName);
if ($dateTime != NULL)
{
$val = $dateTime->ToString();
}
break;
case MgPropertyType::Single :
$val = $featureReader->GetSingle($propertyName);
break;
case MgPropertyType::Double :
$val = $featureReader->GetDouble($propertyName);
break;
case MgPropertyType::Int16 :
$val = $featureReader->GetInt16($propertyName);
break;
case MgPropertyType::Int32 :
$val = $featureReader->GetInt32($propertyName);
break;
case MgPropertyType::Int64 :
$val = $featureReader->GetInt64($propertyName);
break;
case MgPropertyType::String :
$val = $featureReader->GetString($propertyName);
break;
case MgPropertyType::Blob :
//fwrite($logFileHandle, "$propertyName is blobn");
break;
case MgPropertyType::Clob :
//fwrite($logFileHandle, "$propertyName is clobn");
break;
case MgPropertyType::Feature :
/*
$val = $featureReader->GetFeatureObject($propertyName);
if ($val != NULL) {
fwrite($logFileHandle, "$propertyName is a featuren");
printFeatureReader($val);
}
*/
break;
case MgPropertyType::Geometry :
/*
fwrite($logFileHandle, "$propertyName is a geometryn");
$val = $featureReader->GetGeometry($propertyName);
if ($val != NULL) {
$aGeometry = $agfReaderWriter->Read($val);
//$aGeometry->Envelope();
$wktRepresentation = $wktReaderWriter->Write($aGeometry);
fwrite($logFileHandle, "WKT Representation: "$wktRepresentation"n");
} else {
fwrite($logFileHandle, "This geometry property is nulln");
}
*/
break;
case MgPropertyType::Raster :
/*
$val = $featureReader->GetRaster($propertyName);
fwrite($logFileHandle, "$propertyName is a rastern");
*/
break;
default :
$val = "";
}
} catch (MgException $e) {
//this switch block seems to throw an exception rather for null property values rather than just returning
//a null value, so catch the exception here and set value to an empty string
$val = "";
}
if ( null == $val ) {
$val = "";
}
return $val;
}
/**
keep all the attributes of selected features in an array
*/
function BuildSelectionArray($featureReader, $layerName, $properties, $bComputedProperties,
$srsLayer, $bNeedsTransform, $layerObj)
{
$agf = new MgAgfReaderWriter();
$srsFactory = new MgCoordinateSystemFactory();
$properties->$layerName->propertynames = array();
$properties->$layerName->propertyvalues = array();
$properties->$layerName->propertytypes = array();
$properties->$layerName->numelements = 0;
$properties->$layerName->values = array();
$properties->$layerName->metadatanames= array();
array_push($properties->$layerName->metadatanames, 'dimension');
array_push($properties->$layerName->metadatanames, 'bbox');
array_push($properties->$layerName->metadatanames, 'center');
array_push($properties->$layerName->metadatanames, 'area');
array_push($properties->$layerName->metadatanames, 'length');
$mappings = $_SESSION['property_mappings'][$layerObj->GetObjectId()];
foreach($mappings as $name => $value)
{
$propType = $featureReader->GetPropertyType($name);
array_push($properties->$layerName->propertynames, $name);
array_push($properties->$layerName->propertyvalues, $value);
array_push($properties->$layerName->propertytypes, $propType);
}
$srsTarget = null;
$srsXform = null;
while ($featureReader->ReadNext())
{
$properties->$layerName->values[$properties->$layerName->numelements] = array();
$properties->$layerName->metadata[$properties->$layerName->numelements] = array();
$dimension = '';
$bbox = '';
$center = '';
$area = '';
$length = '';
if ($bComputedProperties)
{
$classDef = $featureReader->GetClassDefinition();
$geomName = $classDef->GetDefaultGeometryPropertyName();
if ($geomName != '') {
$geomByteReader = $featureReader->GetGeometry($geomName);
/* is this needed? We declare one outside the loop too?*/
$agf = new MgAgfReaderWriter();
$geom = $agf->Read($geomByteReader);
$envelope = $geom->Envelope();
$ll = $envelope->GetLowerLeftCoordinate();
$ur = $envelope->GetUpperRightCoordinate();
$bbox = $ll->GetX().','.$ll->GetY().','.$ur->GetX().','.$ur->GetY();
$centroid = $geom->GetCentroid()->GetCoordinate();
$center = $centroid->GetX().','.$centroid->GetY();
/* 0 = point, 1 = curve, 2 = surface */
$dimension = $geom->GetDimension();
if ($geom->GetDimension() > 0) {
if ($bNeedsTransform && $srsTarget == null && $srsXform == null) {
$srsTarget = $srsFactory->Create(getUtmWkt($centroid->GetX(),
$centroid->GetY()));
$verMajor = subStr(GetSiteVersion(), 0,1);
if ($verMajor == '1') {
$srsXform = new MgCoordinateSystemTransform($srsLayer, $srsTarget);
} else {
$srsXform = $srsFactory->GetTransform($srsLayer, $srsTarget);
}
}
if ($srsXform != null) {
try {
$ageom = $geom->Transform($srsXform);
$geom = $ageom;
} catch (MgException $ee) {
echo "/*transform exception:";
echo "ERROR: " . $ee->GetMessage() . "\n";
echo $ee->GetDetails() . "\n*/";
}
}
if ($geom->GetDimension() > 1) {
$area = $geom->GetArea();
}
if ($geom->GetDimension() > 0) {
$length = $geom->GetLength();
}
}
}
}
array_push($properties->$layerName->metadata[$properties->$layerName->numelements], $dimension);
array_push($properties->$layerName->metadata[$properties->$layerName->numelements], $bbox);
array_push($properties->$layerName->metadata[$properties->$layerName->numelements], $center);
array_push($properties->$layerName->metadata[$properties->$layerName->numelements], $area);
array_push($properties->$layerName->metadata[$properties->$layerName->numelements], $length);
$numproperties = count($properties->$layerName->propertynames);
for($j=0; $j<$numproperties; $j++)
{
$propname = $properties->$layerName->propertynames[$j];
$value = GetPropertyValueFromFeatReader($featureReader,
$properties->$layerName->propertytypes[$j],
$propname);
$value = htmlentities($value);
$value = addslashes($value);
$value = preg_replace( "/\r?\n/", "<br>", $value );
array_push($properties->$layerName->values[$properties->$layerName->numelements], $value);
//$properties->$layerName->values[$properties->$layerName->numelements][$propname] = $value;
}
$properties->$layerName->numelements= $properties->$layerName->numelements+1;
}
return $properties;
}
function getUtmWkt($lon, $lat) {
$epsg42003 = "PROJCS[\"WGS 84 / Auto Orthographic\",GEOGCS[\"WGS 84\",DATUM[\"WGS_1984\",SPHEROID[\"WGS_1984\",6378137,298.257223563]],PRIMEM[\"Greenwich\",0],UNIT[\"Decimal_Degree\",0.0174532925199433]],PROJECTION[\"Orthographic\"],PARAMETER[\"central_meridian\",%.3e],PARAMETER[\"latitude_of_origin\",%.3e],UNIT[\"Meter\",1]]";
return sprintf( $epsg42003, $lon, $lat);
}
function GetSiteVersion() {
global $user;
$serverAdmin = new MgServerAdmin();
$serverAdmin->Open($user);
$infoProps = $serverAdmin->GetInformationProperties();
$versionProp = $infoProps->GetItem(MgServerInformationProperties::ServerVersion);
$serverVersion = $versionProp->GetValue();
return $serverVersion;
}
?>