GeoJSON Parsing Verbesserungen #586
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WalkthroughThe recent updates revolve around enhancing GeoJSON parsing capabilities across Android and iOS platforms, introducing a new method Changes
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Review Status
Actionable comments generated: 2
Configuration used: CodeRabbit UI
Files ignored due to path filters (1)
djinni/yaml/geo_json_point.yamlis excluded by:!**/*.yaml
Files selected for processing (19)
- bridging/android/java/io/openmobilemaps/mapscore/shared/map/layers/tiled/GeoJsonFeatureParserInterface.kt (2 hunks)
- bridging/android/java/io/openmobilemaps/mapscore/shared/map/layers/tiled/GeoJsonPoint.kt (1 hunks)
- bridging/android/jni/map/layers/tiled/NativeGeoJsonFeatureParserInterface.cpp (2 hunks)
- bridging/android/jni/map/layers/tiled/NativeGeoJsonPoint.cpp (1 hunks)
- bridging/android/jni/map/layers/tiled/NativeGeoJsonPoint.h (1 hunks)
- bridging/ios/MCGeoJsonFeatureParserInterface+Private.mm (2 hunks)
- bridging/ios/MCGeoJsonFeatureParserInterface.h (2 hunks)
- bridging/ios/MCGeoJsonPoint+Private.h (1 hunks)
- bridging/ios/MCGeoJsonPoint+Private.mm (1 hunks)
- bridging/ios/MCGeoJsonPoint.h (1 hunks)
- bridging/ios/MCGeoJsonPoint.mm (1 hunks)
- djinni/map/layers/tiled/geo_json_parser.djinni (1 hunks)
- ios/graphics/Texture/TextureHolder.swift (1 hunks)
- shared/public/GeoJsonFeatureParser.h (1 hunks)
- shared/public/GeoJsonFeatureParserInterface.h (1 hunks)
- shared/public/GeoJsonPoint.h (1 hunks)
- shared/public/Value.h (1 hunks)
- shared/src/map/layers/tiled/vector/geojson/GeoJsonFeatureParser.cpp (2 hunks)
- shared/src/map/layers/tiled/vector/geojson/GeoJsonParser.h (2 hunks)
Files skipped from review due to trivial changes (6)
- bridging/android/java/io/openmobilemaps/mapscore/shared/map/layers/tiled/GeoJsonPoint.kt
- bridging/ios/MCGeoJsonPoint+Private.h
- bridging/ios/MCGeoJsonPoint+Private.mm
- bridging/ios/MCGeoJsonPoint.h
- bridging/ios/MCGeoJsonPoint.mm
- shared/public/GeoJsonPoint.h
Additional comments: 16
djinni/map/layers/tiled/geo_json_parser.djinni (2)
- 8-8: Added method
parseWithPointGeometryto the interface, which is expected to enhance GeoJSON parsing capabilities by supporting point geometries. Ensure corresponding implementations in all languages (Java, Objective-C, C++) are consistent with this interface definition.- 11-13: Introduced a new
geo_json_pointrecord with fieldspointandfeature_info. This structure is crucial for representing point geometries along with their associated feature information. Verify that the typescoordandvector_layer_feature_infoare correctly used and that they provide the necessary data for GeoJSON points.bridging/ios/MCGeoJsonFeatureParserInterface.h (1)
- 16-16: The addition of
parseWithPointGeometryin the iOS interface aligns with the changes in the Djinni interface definition. This method will enable iOS applications to parse GeoJSON data containing point geometries. Ensure that the implementation correctly bridges to the underlying C++ logic.shared/public/GeoJsonFeatureParserInterface.h (1)
- 22-22: The addition of
parseWithPointGeometryto the C++ interface is consistent with the Djinni interface changes. This method extends the parser's functionality to support point geometries in GeoJSON data. Ensure that the implementation adheres to the interface contract and correctly handles GeoJSON parsing logic.shared/public/GeoJsonFeatureParser.h (1)
- 22-22: The
parseWithPointGeometrymethod has been correctly declared in theGeoJsonFeatureParserclass, aligning with the interface definition. This method is crucial for enabling point geometry parsing in the shared C++ codebase. Ensure the implementation is robust and correctly parses GeoJSON point geometries.bridging/android/jni/map/layers/tiled/NativeGeoJsonPoint.h (1)
- 11-31: The
NativeGeoJsonPointclass provides JNI bridging for theGeoJsonPointstructure, facilitating its use in Android applications. Ensure that the JNI methodstoCppandfromCppcorrectly translate between Java and C++ representations, and that the JNI field and method IDs are correctly resolved.bridging/android/jni/map/layers/tiled/NativeGeoJsonPoint.cpp (2)
- 14-29: The implementation of
fromCppinNativeGeoJsonPointcorrectly converts C++GeoJsonPointobjects to their Java counterparts. Verify that the JNI environment is correctly used and that the Java object is constructed with the appropriate parameters.- 23-28: The
toCppmethod implementation correctly translates JavaGeoJsonPointobjects back to their C++ counterparts. Ensure that the JNI environment is correctly used to access object fields and that the conversion accurately reflects the structure ofGeoJsonPoint.shared/src/map/layers/tiled/vector/geojson/GeoJsonFeatureParser.cpp (1)
- 34-49: The implementation of
parseWithPointGeometrycorrectly parses GeoJSON data to extract point geometries. Ensure that thenlohmann::jsonlibrary is correctly used for parsing and that point geometries are accurately extracted and returned asGeoJsonPointobjects.bridging/android/java/io/openmobilemaps/mapscore/shared/map/layers/tiled/GeoJsonFeatureParserInterface.kt (2)
- 18-18: The addition of
parseWithPointGeometryto the Kotlin interface for GeoJsonFeatureParserInterface is consistent with the changes across other platforms. This method enables the parsing of GeoJSON data with point geometries on Android. Ensure that the native implementation is correctly invoked.- 41-45: The
CppProxyinner class correctly implements theparseWithPointGeometrymethod, ensuring that the native parsing logic is invoked. Verify that the native methodnative_parseWithPointGeometryis correctly linked and that it accurately processes GeoJSON data.bridging/ios/MCGeoJsonFeatureParserInterface+Private.mm (1)
- 49-54: The implementation of
parseWithPointGeometryin the Objective-C++ extension correctly bridges the call to the underlying C++ logic. Ensure that exceptions are correctly translated and that the method returns the expected array ofMCGeoJsonPointobjects.bridging/android/jni/map/layers/tiled/NativeGeoJsonFeatureParserInterface.cpp (1)
- 40-47: The
native_parseWithPointGeometryJNI method correctly invokes theparseWithPointGeometryfunction of theGeoJsonFeatureParserInterfaceand returns the result as a JNI object. Ensure that the JNI environment is correctly used and that the method accurately bridges the parsing logic.ios/graphics/Texture/TextureHolder.swift (1)
- 79-122: The new convenience initializer in
TextureHoldercorrectly creates a texture using the Metal framework based on the provided size and draw callback. Ensure that the Metal context is correctly utilized and that the texture creation process accurately reflects the intended design and functionality.shared/src/map/layers/tiled/vector/geojson/GeoJsonParser.h (1)
- 89-93: The modification to conditionally set the
featureContextbased on the presence of an "id" field in the input feature is a significant improvement for accurately transferring IDs as identifiers. Ensure that the logic correctly handles both string IDs and the generation of UUIDs when no ID is provided.shared/public/Value.h (1)
- 122-139: > 📝 NOTE
This review was outside the diff hunks, and no overlapping diff hunk was found. Original lines [1-1]
Ensure the file's copyright notice is up-to-date and accurately reflects the current year or the range of years during which the file was modified. This is important for maintaining proper copyright documentation.
| FeatureContext(vtzero::GeomType geomType, | ||
| mapType propertiesMap, | ||
| const std::string &stringIdentifier): | ||
| propertiesMap(std::move(propertiesMap)), | ||
| geomType(geomType) { | ||
| size_t hash = 0; | ||
| std::hash_combine(hash, std::hash<std::string>{}(stringIdentifier)); | ||
| identifier = hash; | ||
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| initialize(); | ||
| } |
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The new constructor in FeatureContext class that takes a string identifier and converts it to a hash for the identifier member introduces a potential issue with hash collisions. While the likelihood of collisions might be low, it's important to consider the implications of such an event, especially in mapping applications where unique identification is crucial. Consider implementing or documenting a strategy to handle potential hash collisions to ensure the robustness of feature identification.
| initialize(); | ||
| } | ||
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| FeatureContext(vtzero::GeomType geomType, | ||
| mapType propertiesMap, | ||
| const std::string &stringIdentifier): | ||
| propertiesMap(std::move(propertiesMap)), | ||
| geomType(geomType) { | ||
| size_t hash = 0; | ||
| std::hash_combine(hash, std::hash<std::string>{}(stringIdentifier)); | ||
| identifier = hash; | ||
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| initialize(); | ||
| } | ||
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| FeatureContext(vtzero::feature const &feature) { | ||
| geomType = feature.geometry_type(); | ||
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📝 NOTE
This review was outside the diff hunks and was mapped to the diff hunk with the greatest overlap. Original lines [1-136]
Consider reviewing the entire file for opportunities to optimize data structures and algorithms for better performance, especially in critical paths of the mapping application. For example, evaluating the use of std::unordered_map and std::vector in frequently accessed methods could lead to performance gains. Additionally, assess the maintainability of the code, ensuring that complex logic is well-documented and that the code structure facilitates easy modifications and extensions in the future.
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Review Status
Actionable comments generated: 2
Configuration used: CodeRabbit UI
Files selected for processing (2)
- shared/src/map/layers/tiled/vector/geojson/GeoJsonFeatureParser.cpp (2 hunks)
- shared/src/map/layers/tiled/vector/geojson/GeoJsonParser.h (3 hunks)
Files skipped from review as they are similar to previous changes (1)
- shared/src/map/layers/tiled/vector/geojson/GeoJsonFeatureParser.cpp
Additional comments: 1
shared/src/map/layers/tiled/vector/geojson/GeoJsonParser.h (1)
- 147-218: The parsing methods (
parsePoint,parseMultiPoint,parseLineString,parseMultiLineString,parsePolygon,parseMultiPolygon) and utility functions (parseProperties,getFeatureInfo,parseCoordinate) remain unchanged in this PR. These methods are crucial for the functionality of theGeoJsonParserclass and appear to be well-implemented based on the provided context. It's important to ensure that these methods are thoroughly tested, especially with the introduction of new functionality related to point geometries and ID handling.
| if(feature["id"].is_string()) { | ||
| geometry->featureContext = std::make_shared<FeatureContext>(geomType, properties, feature["id"].get<std::string>()); | ||
| } else { | ||
| geometry->featureContext = std::make_shared<FeatureContext>(geomType, properties, generator.generateUUID()); | ||
| } |
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The logic for setting featureContext based on the presence of an "id" field is sound. However, consider the implications of generating a UUID for every feature without an "id". This could lead to inconsistencies if the same GeoJSON is parsed multiple times, resulting in different UUIDs for the same features. It might be beneficial to document this behavior or consider a deterministic approach to generating UUIDs based on feature properties to ensure consistency.
| static std::vector<::GeoJsonPoint> getPointsWithProperties(const nlohmann::json &geojson) { | ||
| // preconditions | ||
| std::vector<::GeoJsonPoint> points; | ||
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| if (!geojson["type"].is_string() || | ||
| geojson["type"] != "FeatureCollection" || | ||
| !geojson["features"].is_array()) { | ||
| LogError <<= "Geojson is not valid"; | ||
| assert(false); | ||
| return points; | ||
| } | ||
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| UUIDGenerator generator; | ||
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| std::shared_ptr<GeoJson> geoJson = std::make_shared<GeoJson>(); | ||
| for (const auto &feature: geojson["features"]) { | ||
| if (!feature["geometry"].is_object() || | ||
| !feature["geometry"]["type"].is_string() || | ||
| !feature["geometry"]["coordinates"].is_array()) { | ||
| LogError <<= "Geojson feature is not valid"; | ||
| continue; | ||
| } | ||
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| const auto &geometryType = feature["geometry"]["type"]; | ||
| const auto &coordinates = feature["geometry"]["coordinates"]; | ||
| std::shared_ptr<GeoJsonGeometry> geometry; | ||
| vtzero::GeomType geomType; | ||
| if (geometryType == "Point") { | ||
| geometry = parsePoint(coordinates); | ||
| geomType = vtzero::GeomType::POINT; | ||
| } | ||
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| if(!geometry || geometry->coordinates.size() != 1 || geometry->coordinates.front().size() != 1) { | ||
| continue; | ||
| } | ||
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| if(!feature["id"].is_string()) { | ||
| continue; | ||
| } | ||
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| points.emplace_back(geometry->coordinates.front().front(), GeoJsonParser::getFeatureInfo(feature["properties"], feature["id"].get<std::string>())); | ||
| } | ||
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| return points; | ||
| } |
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The method getPointsWithProperties is a valuable addition for extracting point geometries with their properties. However, there are a few areas for improvement:
- The method's precondition checks (lines 106-112) are identical to those in
getGeoJson. Consider extracting these checks into a separate method to avoid code duplication. - The method assumes that all features with a "Point" geometry type will have exactly one coordinate (line 134). This is a valid assumption per the GeoJSON specification, but it's worth documenting this assumption in a comment for clarity.
- The method skips features without an "id" field (lines 138-140). This behavior is consistent with the handling in
getGeoJson, but it may be worth considering if there are use cases where points without an "id" should still be returned, perhaps with a generated UUID as ingetGeoJson.
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Review Status
Actionable comments generated: 0
Configuration used: CodeRabbit UI
Files selected for processing (1)
- shared/src/map/layers/tiled/vector/geojson/GeoJsonParser.h (3 hunks)
Files skipped from review as they are similar to previous changes (1)
- shared/src/map/layers/tiled/vector/geojson/GeoJsonParser.h
Summary by CodeRabbit
New Features
Refactor
Documentation