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qgswfs3handlers.cpp
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qgswfs3handlers.cpp
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/***************************************************************************
qgswfs3handlers.cpp
-------------------------
begin : May 3, 2019
copyright : (C) 2019 by Alessandro Pasotti
email : elpaso at itopen dot it
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "qgswfs3handlers.h"
#include "qgsserverogcapi.h"
#include "qgsserverapicontext.h"
#include "qgsserverrequest.h"
#include "qgsserverresponse.h"
#include "qgsserverapiutils.h"
#include "qgsserverfeatureid.h"
#include "qgsfeaturerequest.h"
#include "qgsjsonutils.h"
#include "qgsogrutils.h"
#include "qgsvectorlayer.h"
#include "qgsmessagelog.h"
#include "qgsbufferserverrequest.h"
#include "qgsserverprojectutils.h"
#include "qgsserverinterface.h"
#include "qgsexpressioncontext.h"
#include "qgsexpressioncontextutils.h"
#include "qgsvectorlayerutils.h"
#include "qgslogger.h"
#ifdef HAVE_SERVER_PYTHON_PLUGINS
#include "qgsfilterrestorer.h"
#include "qgsaccesscontrol.h"
#endif
QgsWfs3APIHandler::QgsWfs3APIHandler( const QgsServerOgcApi *api ):
mApi( api )
{
setContentTypes( { QgsServerOgcApi::ContentType::OPENAPI3, QgsServerOgcApi::ContentType::HTML } );
}
void QgsWfs3APIHandler::handleRequest( const QgsServerApiContext &context ) const
{
if ( ! context.project() )
{
throw QgsServerApiImproperlyConfiguredException( QStringLiteral( "Project not found, please check your server configuration." ) );
}
const QString contactPerson = QgsServerProjectUtils::owsServiceContactPerson( *context.project() );
const QString contactMail = QgsServerProjectUtils::owsServiceContactMail( *context.project() );
const QString projectTitle = QgsServerProjectUtils::owsServiceTitle( *context.project() );
const QString projectDescription = QgsServerProjectUtils::owsServiceAbstract( *context.project() );
const QgsProjectMetadata metadata { context.project()->metadata() };
json data
{
{ "openapi", "3.0.1" },
{
"tags", {{
{ "name", "Capabilities" },
{ "description", "Essential characteristics of this API including information about the data." }
}, {
{ "name", "Features" },
{ "description", "Access to data (features)." }
}
}
},
{
"info", {
{ "title", projectTitle.toStdString() },
{ "description", projectDescription.toStdString() },
{
"contact", {
{ "name", contactPerson.toStdString() },
{ "email", contactMail.toStdString() },
{ "url", "" } // TODO: contact url
}
},
{
"license", {
{ "name", "" } // TODO: license
}
},
{ "version", mApi->version().toStdString() }
}
},
{
"servers", {{
{ "url", parentLink( context.request()->url(), 1 ).toStdString() }
}
}
}
};
// Add links only if not OPENAPI3 to avoid validation errors
if ( QgsServerOgcApiHandler::contentTypeFromRequest( context.request() ) != QgsServerOgcApi::ContentType::OPENAPI3 )
{
data["links"] = links( context );
}
// Gather path information from handlers
json paths = json::array();
for ( const auto &h : mApi->handlers() )
{
// Skip null schema
const json hSchema = h->schema( context );
if ( ! hSchema.is_null() )
paths.merge_patch( hSchema );
}
data[ "paths" ] = paths;
// Schema: load common part from file schema.json
static json schema;
QFile f( context.serverInterface()->serverSettings()->apiResourcesDirectory() + "/ogc/schema.json" );
if ( f.open( QFile::ReadOnly | QFile::Text ) )
{
QTextStream in( &f );
schema = json::parse( in.readAll().toStdString() );
}
else
{
QgsMessageLog::logMessage( QStringLiteral( "Could not find schema.json in %1, please check your server configuration" ).arg( f.fileName() ), QStringLiteral( "Server" ), Qgis::Critical );
throw QgsServerApiInternalServerError( QStringLiteral( "Could not find schema.json" ) );
}
// Fill CRSs
json crss = json::array();
for ( const QString &crs : QgsServerApiUtils::publishedCrsList( context.project() ) )
{
crss.push_back( crs.toStdString() );
}
schema[ "components" ][ "parameters" ][ "bbox-crs" ][ "schema" ][ "enum" ] = crss;
schema[ "components" ][ "parameters" ][ "crs" ][ "schema" ][ "enum" ] = crss;
data[ "components" ] = schema["components"];
// Add schema refs
json navigation = json::array();
const QUrl url { context.request()->url() };
navigation.push_back( {{ "title", "Landing page" }, { "href", parentLink( url, 1 ).toStdString() }} ) ;
write( data, context, {{ "pageTitle", linkTitle() }, { "navigation", navigation }} );
}
json QgsWfs3APIHandler::schema( const QgsServerApiContext &context ) const
{
json data;
const std::string path { QgsServerApiUtils::appendMapParameter( context.apiRootPath() + QStringLiteral( "/api" ), context.request()->url() ).toStdString() };
data[ path ] =
{
{
"get", {
{ "tags", jsonTags() },
{ "summary", summary() },
{ "description", description() },
{ "operationId", operationId() },
{
"responses", {
{
"200", {
{ "description", description() },
{
"content", {
{
"application/vnd.oai.openapi+json;version=3.0", {
{
"schema", {
{ "type", "object" }
}
}
}
},
{
"text/html", {
{
"schema", {
{ "type", "string" }
}
}
}
}
}
}
}
},
{ "default", defaultResponse() }
}
}
}
}
};
return data;
}
void QgsWfs3AbstractItemsHandler::checkLayerIsAccessible( QgsVectorLayer *mapLayer, const QgsServerApiContext &context ) const
{
const QVector<QgsVectorLayer *> publishedLayers = QgsServerApiUtils::publishedWfsLayers<QgsVectorLayer *>( context );
if ( ! publishedLayers.contains( mapLayer ) )
{
throw QgsServerApiNotFoundError( QStringLiteral( "Collection was not found" ) );
}
}
QgsFeatureRequest QgsWfs3AbstractItemsHandler::filteredRequest( const QgsVectorLayer *vLayer, const QgsServerApiContext &context, const QStringList &subsetAttributes ) const
{
QgsFeatureRequest featureRequest;
QgsExpressionContext expressionContext;
expressionContext << QgsExpressionContextUtils::globalScope()
<< QgsExpressionContextUtils::projectScope( context.project() )
<< QgsExpressionContextUtils::layerScope( vLayer );
featureRequest.setExpressionContext( expressionContext );
#ifdef HAVE_SERVER_PYTHON_PLUGINS
// Python plugins can make further modifications to the allowed attributes
QgsAccessControl *accessControl = context.serverInterface()->accessControls();
if ( accessControl )
{
accessControl->filterFeatures( vLayer, featureRequest );
}
#endif
QSet<QString> publishedAttrs;
const QgsFields constFields { publishedFields( vLayer, context ) };
for ( const QgsField &f : constFields )
{
if ( subsetAttributes.isEmpty() || subsetAttributes.contains( f.name( ) ) )
publishedAttrs.insert( f.name() );
}
featureRequest.setSubsetOfAttributes( publishedAttrs, vLayer->fields() );
return featureRequest;
}
QgsFields QgsWfs3AbstractItemsHandler::publishedFields( const QgsVectorLayer *vLayer, const QgsServerApiContext &context ) const
{
QStringList publishedAttributes = QStringList();
// Removed attributes
// WFS excluded attributes for this layer
const QgsFields &fields = vLayer->fields();
for ( const QgsField &field : fields )
{
if ( !field.configurationFlags().testFlag( QgsField::ConfigurationFlag::HideFromWfs ) )
{
publishedAttributes.push_back( field.name() );
}
}
#ifdef HAVE_SERVER_PYTHON_PLUGINS
// Python plugins can make further modifications to the allowed attributes
QgsAccessControl *accessControl = context.serverInterface()->accessControls();
if ( accessControl )
{
publishedAttributes = accessControl->layerAttributes( vLayer, publishedAttributes );
}
#endif
QgsFields publishedFields;
for ( int i = 0; i < fields.count(); ++i )
{
if ( publishedAttributes.contains( fields.at( i ).name() ) )
{
publishedFields.append( fields.at( i ) );
}
}
return publishedFields;
}
QgsWfs3LandingPageHandler::QgsWfs3LandingPageHandler()
{
}
void QgsWfs3LandingPageHandler::handleRequest( const QgsServerApiContext &context ) const
{
json data
{
{ "links", links( context ) }
};
// Append links to APIs
data["links"].push_back(
{
{ "href", href( context, "/collections" )},
{ "rel", QgsServerOgcApi::relToString( QgsServerOgcApi::Rel::data ) },
{ "type", QgsServerOgcApi::mimeType( QgsServerOgcApi::ContentType::JSON ) },
{ "title", "Feature collections" },
} );
data["links"].push_back(
{
{ "href", href( context, "/conformance" )},
{ "rel", QgsServerOgcApi::relToString( QgsServerOgcApi::Rel::conformance ) },
{ "type", QgsServerOgcApi::mimeType( QgsServerOgcApi::ContentType::JSON ) },
{ "title", "Conformance classes" },
} );
data["links"].push_back(
{
{ "href", href( context, "/api" )},
{ "rel", QgsServerOgcApi::relToString( QgsServerOgcApi::Rel::service_desc ) },
{ "type", QgsServerOgcApi::mimeType( QgsServerOgcApi::ContentType::OPENAPI3 ) },
{ "title", "API description" },
} );
write( data, context, {{ "pageTitle", linkTitle() }, { "navigation", json::array() }} );
}
json QgsWfs3LandingPageHandler::schema( const QgsServerApiContext &context ) const
{
json data;
const std::string path { QgsServerApiUtils::appendMapParameter( context.apiRootPath(), context.request()->url() ).toStdString() };
data[ path ] =
{
{
"get", {
{ "tags", jsonTags() },
{ "summary", summary() },
{ "description", description() },
{ "operationId", operationId() },
{
"responses", {
{
"200", {
{ "description", description() },
{
"content", {
{
"application/json", {
{
"schema", {
{ "$ref", "#/components/schemas/root" }
}
}
}
},
{
"text/html", {
{
"schema", {
{ "type", "string" }
}
}
}
}
}
}
}
},
{ "default", defaultResponse() }
}
}
}
}
};
return data;
}
QgsWfs3ConformanceHandler::QgsWfs3ConformanceHandler()
{
}
void QgsWfs3ConformanceHandler::handleRequest( const QgsServerApiContext &context ) const
{
json data
{
{ "links", links( context ) },
{
"conformsTo", {
"http://www.opengis.net/spec/ogcapi-features-1/1.0/conf/core",
"http://www.opengis.net/spec/ogcapi-features-1/1.0/conf/oas30",
"http://www.opengis.net/spec/ogcapi-features-1/1.0/conf/html",
"http://www.opengis.net/spec/ogcapi-features-1/1.0/conf/geojson"
}
}
};
json navigation = json::array();
const QUrl url { context.request()->url() };
navigation.push_back( {{ "title", "Landing page" }, { "href", parentLink( url, 1 ).toStdString() }} ) ;
write( data, context, {{ "pageTitle", linkTitle() }, { "navigation", navigation }} );
}
json QgsWfs3ConformanceHandler::schema( const QgsServerApiContext &context ) const
{
json data;
const std::string path { QgsServerApiUtils::appendMapParameter( context.apiRootPath() + QStringLiteral( "/conformance" ), context.request()->url() ).toStdString() };
data[ path ] =
{
{
"get", {
{ "tags", jsonTags() },
{ "summary", summary() },
{ "description", description() },
{ "operationId", operationId() },
{
"responses", {
{
"200", {
{ "description", description() },
{
"content", {
{
"application/json", {
{
"schema", {
{ "$ref", "#/components/schemas/root" }
}
}
}
},
{
"text/html", {
{
"schema", {
{ "type", "string" }
}
}
}
}
}
}
}
},
{ "default", defaultResponse() }
}
}
}
}
};
return data;
}
QgsWfs3CollectionsHandler::QgsWfs3CollectionsHandler()
{
}
void QgsWfs3CollectionsHandler::handleRequest( const QgsServerApiContext &context ) const
{
json crss = json::array();
for ( const QString &crs : QgsServerApiUtils::publishedCrsList( context.project() ) )
{
crss.push_back( crs.toStdString() );
}
json data
{
{
"links", links( context )
}, // TODO: add XSD or other schema?
{ "collections", json::array() },
{
"crs", crss
}
};
if ( context.project() )
{
const QgsProject *project = context.project();
const QStringList wfsLayerIds = QgsServerProjectUtils::wfsLayerIds( *project );
for ( const QString &wfsLayerId : wfsLayerIds )
{
QgsVectorLayer *layer = qobject_cast<QgsVectorLayer *>( project->mapLayer( wfsLayerId ) );
if ( !layer )
{
continue;
}
if ( layer->type() != QgsMapLayerType::VectorLayer )
{
continue;
}
// Check if the layer is published, raise not found if it is not
checkLayerIsAccessible( layer, context );
const std::string title { layer->title().isEmpty() ? layer->name().toStdString() : layer->title().toStdString() };
const QString shortName { layer->shortName().isEmpty() ? layer->name() : layer->shortName() };
data["collections"].push_back(
{
// identifier of the collection used, for example, in URIs
{ "id", shortName.toStdString() },
// human readable title of the collection
{ "title", title },
// a description of the features in the collection
{ "description", layer->abstract().toStdString() },
{
"crs", crss
},
// TODO: "relations" ?
{
"extent", {
{
"spatial", {
{ "bbox", QgsServerApiUtils::layerExtent( layer ) },
{ "crs", "http://www.opengis.net/def/crs/OGC/1.3/CRS84" },
},
},
{
"temporal", {
{ "interval", QgsServerApiUtils::temporalExtent( layer ) },
{ "trs", "http://www.opengis.net/def/uom/ISO-8601/0/Gregorian" },
}
}
}
},
{
"links", {
{
{ "href", href( context, QStringLiteral( "/%1/items" ).arg( shortName ), QgsServerOgcApi::contentTypeToExtension( QgsServerOgcApi::ContentType::JSON ) ) },
{ "rel", QgsServerOgcApi::relToString( QgsServerOgcApi::Rel::item ) },
{ "type", QgsServerOgcApi::mimeType( QgsServerOgcApi::ContentType::GEOJSON ) },
{ "title", title + " as GeoJSON" }
},
{
{ "href", href( context, QStringLiteral( "/%1/items" ).arg( shortName ), QgsServerOgcApi::contentTypeToExtension( QgsServerOgcApi::ContentType::HTML ) ) },
{ "rel", QgsServerOgcApi::relToString( QgsServerOgcApi::Rel::item ) },
{ "type", QgsServerOgcApi::mimeType( QgsServerOgcApi::ContentType::HTML ) },
{ "title", title + " as HTML" }
}/* TODO: not sure what these "concepts" are about, neither if they are mandatory
{
{ "href", href( api, context.request(), QStringLiteral( "/%1/concepts" ).arg( shortName ) ) },
{ "rel", QgsServerOgcApi::relToString( QgsServerOgcApi::Rel::item ) },
{ "type", "text/html" },
{ "title", "Describe " + title }
}
*/
}
},
} );
}
}
json navigation = json::array();
const QUrl url { context.request()->url() };
navigation.push_back( {{ "title", "Landing page" }, { "href", parentLink( url, 1 ).toStdString() }} ) ;
write( data, context, {{ "pageTitle", linkTitle() }, { "navigation", navigation }} );
}
json QgsWfs3CollectionsHandler::schema( const QgsServerApiContext &context ) const
{
json data;
const std::string path { QgsServerApiUtils::appendMapParameter( context.apiRootPath() + QStringLiteral( "/collections" ), context.request()->url() ).toStdString() };
data[ path ] =
{
{
"get", {
{ "tags", jsonTags() },
{ "summary", summary() },
{ "description", description() },
{ "operationId", operationId() },
{
"responses", {
{
"200", {
{ "description", description() },
{
"content", {
{
"application/json", {
{
"schema", {
{ "$ref", "#/components/schemas/content" }
}
}
}
},
{
"text/html", {
{
"schema", {
{ "type", "string" }
}
}
}
}
}
}
}
},
{ "default", defaultResponse() }
}
}
}
}
};
return data;
}
QgsWfs3DescribeCollectionHandler::QgsWfs3DescribeCollectionHandler()
{
}
void QgsWfs3DescribeCollectionHandler::handleRequest( const QgsServerApiContext &context ) const
{
if ( ! context.project() )
{
throw QgsServerApiImproperlyConfiguredException( QStringLiteral( "Project is invalid or undefined" ) );
}
// Check collectionId
const QRegularExpressionMatch match { path().match( context.request()->url().path( ) ) };
if ( ! match.hasMatch() )
{
throw QgsServerApiNotFoundError( QStringLiteral( "Collection was not found" ) );
}
const QString collectionId { match.captured( QStringLiteral( "collectionId" ) ) };
// May throw if not found
QgsVectorLayer *mapLayer { layerFromCollectionId( context, collectionId ) };
Q_ASSERT( mapLayer );
const QgsProject *project = context.project();
const QStringList wfsLayerIds = QgsServerProjectUtils::wfsLayerIds( *project );
if ( ! wfsLayerIds.contains( mapLayer->id() ) )
{
throw QgsServerApiNotFoundError( QStringLiteral( "Collection was not found" ) );
}
// Check if the layer is published, raise not found if it is not
checkLayerIsAccessible( mapLayer, context );
const std::string title { mapLayer->title().isEmpty() ? mapLayer->name().toStdString() : mapLayer->title().toStdString() };
const std::string itemsTitle { title + " items" };
const QString shortName { mapLayer->shortName().isEmpty() ? mapLayer->name() : mapLayer->shortName() };
json linksList = links( context );
linksList.push_back(
{
{ "href", href( context, QStringLiteral( "/items" ), QgsServerOgcApi::contentTypeToExtension( QgsServerOgcApi::ContentType::JSON ) ) },
{ "rel", QgsServerOgcApi::relToString( QgsServerOgcApi::Rel::items ) },
{ "type", QgsServerOgcApi::mimeType( QgsServerOgcApi::ContentType::GEOJSON ) },
{ "title", itemsTitle + " as " + QgsServerOgcApi::contentTypeToStdString( QgsServerOgcApi::ContentType::GEOJSON ) }
} );
linksList.push_back(
{
{ "href", href( context, QStringLiteral( "/items" ), QgsServerOgcApi::contentTypeToExtension( QgsServerOgcApi::ContentType::HTML ) ) },
{ "rel", QgsServerOgcApi::relToString( QgsServerOgcApi::Rel::items ) },
{ "type", QgsServerOgcApi::mimeType( QgsServerOgcApi::ContentType::HTML ) },
{ "title", itemsTitle + " as " + QgsServerOgcApi::contentTypeToStdString( QgsServerOgcApi::ContentType::HTML ) }
} );
linksList.push_back(
{
{
"href", parentLink( context.request()->url(), 3 ).toStdString() +
"?request=DescribeFeatureType&typenames=" +
QUrlQuery( shortName ).toString( QUrl::EncodeSpaces ).toStdString() +
"&service=WFS&version=2.0"
},
{ "rel", QgsServerOgcApi::relToString( QgsServerOgcApi::Rel::describedBy ) },
{ "type", QgsServerOgcApi::mimeType( QgsServerOgcApi::ContentType::XML ) },
{ "title", "Schema for " + title }
} );
json crss = json::array();
for ( const auto &crs : QgsServerApiUtils::publishedCrsList( context.project() ) )
{
crss.push_back( crs.toStdString() );
}
json data
{
{ "id", mapLayer->name().toStdString() },
{ "title", title },
// TODO: check if we need to expose other advertised CRS here
{
"crs", crss
},
// TODO: "relations" ?
{
"extent", {
{
"spatial", {
{ "bbox", QgsServerApiUtils::layerExtent( mapLayer ) },
{ "crs", "http://www.opengis.net/def/crs/OGC/1.3/CRS84" },
}
},
{
"temporal", {
{ "interval", QgsServerApiUtils::temporalExtent( mapLayer ) },
{ "trs", "http://www.opengis.net/def/uom/ISO-8601/0/Gregorian" },
}
}
}
},
{
"links", linksList
}
};
json navigation = json::array();
const QUrl url { context.request()->url() };
navigation.push_back( {{ "title", "Landing page" }, { "href", parentLink( url, 2 ).toStdString() }} ) ;
navigation.push_back( {{ "title", "Collections" }, { "href", parentLink( url, 1 ).toStdString() }} ) ;
write( data, context, {{ "pageTitle", title }, { "navigation", navigation }} );
}
json QgsWfs3DescribeCollectionHandler::schema( const QgsServerApiContext &context ) const
{
json data;
Q_ASSERT( context.project() );
const QVector<QgsVectorLayer *> layers { QgsServerApiUtils::publishedWfsLayers<QgsVectorLayer *>( context ) };
// Construct the context with collection id
for ( const auto &mapLayer : layers )
{
const QString shortName { mapLayer->shortName().isEmpty() ? mapLayer->name() : mapLayer->shortName() };
// Use layer id for operationId
const QString layerId { mapLayer->id() };
const std::string title { mapLayer->title().isEmpty() ? mapLayer->name().toStdString() : mapLayer->title().toStdString() };
const std::string path { QgsServerApiUtils::appendMapParameter( context.apiRootPath() + QStringLiteral( "/collections/%1" ).arg( shortName ), context.request()->url() ).toStdString() };
data[ path ] =
{
{
"get", {
{ "tags", jsonTags() },
{ "summary", "Describe the '" + title + "' feature collection"},
{ "description", description() },
{ "operationId", operationId() + '_' + layerId.toStdString() },
{
"responses", {
{
"200", {
{ "description", "Metadata about the collection '" + title + "' shared by this API." },
{
"content", {
{
"application/json", {
{
"schema", {
{ "$ref", "#/components/schemas/collectionInfo" }
}
}
}
},
{
"text/html", {
{
"schema", {
{ "type", "string" }
}
}
}
}
}
}
}
},
{ "default", defaultResponse() }
}
}
}
}
};
} // end for loop
return data;
}
QgsWfs3CollectionsItemsHandler::QgsWfs3CollectionsItemsHandler()
{
setContentTypes( { QgsServerOgcApi::ContentType::GEOJSON, QgsServerOgcApi::ContentType::HTML } );
}
QList<QgsServerQueryStringParameter> QgsWfs3CollectionsItemsHandler::parameters( const QgsServerApiContext &context ) const
{
QList<QgsServerQueryStringParameter> params;
// Limit
const qlonglong maxLimit { context.serverInterface()->serverSettings()->apiWfs3MaxLimit() };
QgsServerQueryStringParameter limit { QStringLiteral( "limit" ), false,
QgsServerQueryStringParameter::Type::Integer,
QStringLiteral( "Number of features to retrieve [0-%1]" ).arg( maxLimit ),
10 };
limit.setCustomValidator( [ = ]( const QgsServerApiContext &, QVariant & value ) -> bool
{
return value.toInt() >= 0 && value.toInt() <= maxLimit; // TODO: make this configurable!
} );
params.push_back( limit );
// Offset
QgsServerQueryStringParameter offset { QStringLiteral( "offset" ), false,
QgsServerQueryStringParameter::Type::Integer,
QStringLiteral( "Offset for features to retrieve [0-<number of features in the collection>]" ),
0 };
bool offsetValidatorSet = false;
// I'm not yet sure if we should get here without a project,
// but parameters() may be called to document the API - better safe than sorry.
if ( context.project() )
{
// Fields filters
const QgsVectorLayer *mapLayer { layerFromContext( context ) };
if ( mapLayer )
{
offset.setCustomValidator( [ = ]( const QgsServerApiContext &, QVariant & value ) -> bool
{
const qlonglong longVal { value.toLongLong( ) };
return longVal >= 0 && longVal <= mapLayer->featureCount( );
} );
offset.setDescription( QStringLiteral( "Offset for features to retrieve [0-%1]" ).arg( mapLayer->featureCount( ) ) );
offsetValidatorSet = true;
const QList<QgsServerQueryStringParameter> constFieldParameters { fieldParameters( mapLayer, context ) };
for ( const auto &p : constFieldParameters )
{
params.push_back( p );
}
const QgsFields published { publishedFields( mapLayer, context ) };
QStringList publishedFieldNames;
for ( const auto &f : published )
{
publishedFieldNames.push_back( f.name() );
}
// Properties (CSV list of properties to return)
QgsServerQueryStringParameter properties { QStringLiteral( "properties" ), false,
QgsServerQueryStringParameter::Type::List,
QStringLiteral( "Comma separated list of feature property names to be added to the result. Valid values: %1" )
.arg( publishedFieldNames.join( QLatin1String( "', '" ) )
.append( '\'' )
.prepend( '\'' ) ) };
auto propertiesValidator = [ = ]( const QgsServerApiContext &, QVariant & value ) -> bool
{
const QStringList properties { value.toStringList() };
for ( const auto &p : properties )
{
if ( ! publishedFieldNames.contains( p ) )
{
return false;
}
}
return true;
};
properties.setCustomValidator( propertiesValidator );
params.push_back( properties );
}
// Check if is there any suitable datetime fields
if ( ! QgsServerApiUtils::temporalDimensions( mapLayer ).isEmpty() )
{
QgsServerQueryStringParameter datetime { QStringLiteral( "datetime" ), false,
QgsServerQueryStringParameter::Type::String,
QStringLiteral( "Datetime filter" ),
};
datetime.setCustomValidator( [ ]( const QgsServerApiContext &, QVariant & value ) -> bool
{
const QString stringValue { value.toString() };
if ( stringValue.contains( '/' ) )
{
try
{
QgsServerApiUtils::parseTemporalDateInterval( stringValue );
}
catch ( QgsServerException & )
{
try
{
QgsServerApiUtils::parseTemporalDateTimeInterval( stringValue );
}
catch ( QgsServerException & )
{
return false;
}
}
}
else
{
if ( ! QDate::fromString( stringValue, Qt::DateFormat::ISODate ).isValid( ) &&
! QDateTime::fromString( stringValue, Qt::DateFormat::ISODate ).isValid( ) )
{
return false;
}
}
return true;
} );
params.push_back( datetime );
}
}
if ( ! offsetValidatorSet )
{
offset.setCustomValidator( [ ]( const QgsServerApiContext &, QVariant & value ) -> bool
{
const qlonglong longVal { value.toLongLong( ) };
return longVal >= 0 ;
} );
}
params.push_back( offset );
// BBOX
QgsServerQueryStringParameter bbox { QStringLiteral( "bbox" ), false,
QgsServerQueryStringParameter::Type::String,
QStringLiteral( "BBOX filter for the features to retrieve" ) };
params.push_back( bbox );
auto crsValidator = [ = ]( const QgsServerApiContext &, QVariant & value ) -> bool
{
return QgsServerApiUtils::publishedCrsList( context.project() ).contains( value.toString() );
};
// BBOX CRS
QgsServerQueryStringParameter bboxCrs { QStringLiteral( "bbox-crs" ), false,
QgsServerQueryStringParameter::Type::String,
QStringLiteral( "CRS for the BBOX filter" ),
QStringLiteral( "http://www.opengis.net/def/crs/OGC/1.3/CRS84" ) };
bboxCrs.setCustomValidator( crsValidator );
params.push_back( bboxCrs );
// CRS
QgsServerQueryStringParameter crs { QStringLiteral( "crs" ), false,
QgsServerQueryStringParameter::Type::String,
QStringLiteral( "The coordinate reference system of the response geometries." ),
QStringLiteral( "http://www.opengis.net/def/crs/OGC/1.3/CRS84" ) };
crs.setCustomValidator( crsValidator );
params.push_back( crs );
// Result type
QgsServerQueryStringParameter resultType { QStringLiteral( "resultType" ), false,
QgsServerQueryStringParameter::Type::String,
QStringLiteral( "Type of returned result: 'results' (default) or 'hits'" ),
QStringLiteral( "results" ) };
params.push_back( resultType );
// Sortby
QgsServerQueryStringParameter sortBy { QStringLiteral( "sortby" ), false,
QgsServerQueryStringParameter::Type::String,
QStringLiteral( "Sort results by the specified field" )
};
params.push_back( sortBy );
// Sortdesc
QgsServerQueryStringParameter sortDesc { QStringLiteral( "sortdesc" ), false,
QgsServerQueryStringParameter::Type::Boolean,
QStringLiteral( "Sort results in descending order, field name must be specified with 'sortby' parameter" ),
false };
params.push_back( sortDesc );
return params;
}
json QgsWfs3CollectionsItemsHandler::schema( const QgsServerApiContext &context ) const
{
json data;
Q_ASSERT( context.project() );
const QVector<QgsVectorLayer *> layers { QgsServerApiUtils::publishedWfsLayers<QgsVectorLayer *>( context ) };
// Construct the context with collection id
for ( const auto &mapLayer : layers )
{
const QString shortName { mapLayer->shortName().isEmpty() ? mapLayer->name() : mapLayer->shortName() };
const std::string title { mapLayer->title().isEmpty() ? mapLayer->name().toStdString() : mapLayer->title().toStdString() };
// Use layer id for operationId
const QString layerId { mapLayer->id() };
const QString path { QgsServerApiUtils::appendMapParameter( context.apiRootPath() + QStringLiteral( "/collections/%1/items" ).arg( shortName ), context.request()->url() ) };
static const QStringList componentNames
{
QStringLiteral( "limit" ),
QStringLiteral( "offset" ),
QStringLiteral( "resultType" ),
QStringLiteral( "bbox" ),
QStringLiteral( "bbox-crs" ),
QStringLiteral( "crs" ),
QStringLiteral( "datetime" ),
QStringLiteral( "sortby" ),
QStringLiteral( "sortdesc" ),
};
json componentParameters = json::array();
for ( const QString &name : componentNames )
{
componentParameters.push_back( {{ "$ref", "#/components/parameters/" + name.toStdString() }} );
}
// Add layer specific filters
QgsServerApiContext layerContext( context );
QgsBufferServerRequest layerRequest( path );
layerContext.setRequest( &layerRequest );
const QList<QgsServerQueryStringParameter> requestParameters { parameters( layerContext ) };
for ( const auto &p : requestParameters )
{
if ( ! componentNames.contains( p.name() ) )
componentParameters.push_back( p.data() );
}
data[ path.toStdString() ] =
{
{
"get", {
{ "tags", jsonTags() },
{ "summary", "Retrieve features of '" + title + "' feature collection" },
{ "description", description() },