oxirs_physics/simulation/
parameter_extraction.rs

1//! Parameter Extraction from RDF and SAMM
2
3use crate::error::{PhysicsError, PhysicsResult};
4use serde::{Deserialize, Serialize};
5use std::collections::HashMap;
6
7/// Extracts simulation parameters from RDF graphs and SAMM Aspect Models
8pub struct ParameterExtractor {
9    /// Optional RDF store connection (for future SPARQL queries)
10    #[allow(dead_code)]
11    store_path: Option<String>,
12}
13
14impl ParameterExtractor {
15    /// Create a new parameter extractor
16    pub fn new() -> Self {
17        Self { store_path: None }
18    }
19
20    /// Create a parameter extractor with RDF store connection
21    pub fn with_store(store_path: impl Into<String>) -> Self {
22        Self {
23            store_path: Some(store_path.into()),
24        }
25    }
26
27    /// Extract simulation parameters from RDF
28    pub async fn extract(
29        &self,
30        entity_iri: &str,
31        simulation_type: &str,
32    ) -> PhysicsResult<SimulationParameters> {
33        // For now, use mock parameters until full RDF integration is implemented
34        // Future implementation will query RDF store using SPARQL:
35        //
36        // SELECT ?prop ?value ?unit WHERE {
37        //     <entity_iri> ?prop ?value .
38        //     OPTIONAL { ?value phys:unit ?unit }
39        // }
40
41        self.extract_mock_parameters(entity_iri, simulation_type)
42            .await
43    }
44
45    /// Extract parameters using SPARQL queries (future implementation)
46    #[allow(dead_code)]
47    async fn extract_from_sparql(
48        &self,
49        entity_iri: &str,
50        _simulation_type: &str,
51    ) -> PhysicsResult<SimulationParameters> {
52        // Construct SPARQL query to extract properties
53        let _query = format!(
54            r#"
55            PREFIX phys: <http://example.org/physics#>
56            PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
57            PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
58
59            SELECT ?property ?value ?unit ?uncertainty WHERE {{
60                <{entity_iri}> ?property ?value .
61                OPTIONAL {{ ?value phys:unit ?unit }}
62                OPTIONAL {{ ?value phys:uncertainty ?uncertainty }}
63            }}
64            "#,
65            entity_iri = entity_iri
66        );
67
68        // TODO: Execute SPARQL query using oxirs-core::RdfStore
69        // TODO: Parse results into SimulationParameters structure
70        // TODO: Handle missing properties with defaults
71
72        Err(PhysicsError::ParameterExtraction(
73            "SPARQL extraction not yet implemented".to_string(),
74        ))
75    }
76
77    /// Mock parameter extraction for testing and development
78    async fn extract_mock_parameters(
79        &self,
80        entity_iri: &str,
81        simulation_type: &str,
82    ) -> PhysicsResult<SimulationParameters> {
83        // Generate reasonable default parameters based on simulation type
84        let (initial_conditions, material_properties) = match simulation_type {
85            "thermal" => {
86                let mut ic = HashMap::new();
87                ic.insert(
88                    "temperature".to_string(),
89                    PhysicalQuantity {
90                        value: 293.15, // 20°C in Kelvin
91                        unit: "K".to_string(),
92                        uncertainty: Some(0.1),
93                    },
94                );
95
96                let mut mp = HashMap::new();
97                mp.insert(
98                    "thermal_conductivity".to_string(),
99                    MaterialProperty {
100                        name: "Thermal Conductivity".to_string(),
101                        value: 1.0,
102                        unit: "W/(m*K)".to_string(),
103                    },
104                );
105                mp.insert(
106                    "specific_heat".to_string(),
107                    MaterialProperty {
108                        name: "Specific Heat Capacity".to_string(),
109                        value: 4186.0,
110                        unit: "J/(kg*K)".to_string(),
111                    },
112                );
113                mp.insert(
114                    "density".to_string(),
115                    MaterialProperty {
116                        name: "Density".to_string(),
117                        value: 1000.0,
118                        unit: "kg/m^3".to_string(),
119                    },
120                );
121
122                (ic, mp)
123            }
124            "mechanical" => {
125                let mut ic = HashMap::new();
126                ic.insert(
127                    "displacement".to_string(),
128                    PhysicalQuantity {
129                        value: 0.0,
130                        unit: "m".to_string(),
131                        uncertainty: Some(1e-6),
132                    },
133                );
134
135                let mut mp = HashMap::new();
136                mp.insert(
137                    "youngs_modulus".to_string(),
138                    MaterialProperty {
139                        name: "Young's Modulus".to_string(),
140                        value: 200e9, // Steel: 200 GPa
141                        unit: "Pa".to_string(),
142                    },
143                );
144                mp.insert(
145                    "poisson_ratio".to_string(),
146                    MaterialProperty {
147                        name: "Poisson's Ratio".to_string(),
148                        value: 0.3,
149                        unit: "dimensionless".to_string(),
150                    },
151                );
152
153                (ic, mp)
154            }
155            _ => (HashMap::new(), HashMap::new()),
156        };
157
158        Ok(SimulationParameters {
159            entity_iri: entity_iri.to_string(),
160            simulation_type: simulation_type.to_string(),
161            initial_conditions,
162            boundary_conditions: Vec::new(),
163            time_span: (0.0, 100.0),
164            time_steps: 100,
165            material_properties,
166            constraints: Vec::new(),
167        })
168    }
169
170    /// Parse SAMM Aspect Model (future implementation)
171    #[allow(dead_code)]
172    async fn parse_samm_model(&self, _samm_uri: &str) -> PhysicsResult<SimulationParameters> {
173        // TODO: Parse SAMM TTL file
174        // TODO: Extract aspects, properties, characteristics
175        // TODO: Convert to SimulationParameters
176        Err(PhysicsError::SammParsing(
177            "SAMM parsing not yet implemented".to_string(),
178        ))
179    }
180}
181
182impl Default for ParameterExtractor {
183    fn default() -> Self {
184        Self::new()
185    }
186}
187
188/// Simulation Parameters
189#[derive(Debug, Clone, Serialize, Deserialize)]
190pub struct SimulationParameters {
191    /// Entity IRI being simulated
192    pub entity_iri: String,
193
194    /// Simulation type (e.g., "thermal", "fluid", "structural")
195    pub simulation_type: String,
196
197    /// Initial conditions
198    pub initial_conditions: HashMap<String, PhysicalQuantity>,
199
200    /// Boundary conditions
201    pub boundary_conditions: Vec<BoundaryCondition>,
202
203    /// Time span (start, end)
204    pub time_span: (f64, f64),
205
206    /// Number of time steps
207    pub time_steps: usize,
208
209    /// Material properties
210    pub material_properties: HashMap<String, MaterialProperty>,
211
212    /// Physics constraints
213    pub constraints: Vec<String>,
214}
215
216/// Physical quantity with value and unit
217#[derive(Debug, Clone, Serialize, Deserialize)]
218pub struct PhysicalQuantity {
219    pub value: f64,
220    pub unit: String,
221    pub uncertainty: Option<f64>,
222}
223
224/// Boundary condition
225#[derive(Debug, Clone, Serialize, Deserialize)]
226pub struct BoundaryCondition {
227    pub boundary_name: String,
228    pub condition_type: String,
229    pub value: PhysicalQuantity,
230}
231
232/// Material property
233#[derive(Debug, Clone, Serialize, Deserialize)]
234pub struct MaterialProperty {
235    pub name: String,
236    pub value: f64,
237    pub unit: String,
238}
239
240#[cfg(test)]
241mod tests {
242    use super::*;
243
244    #[tokio::test]
245    async fn test_parameter_extractor_thermal() {
246        let extractor = ParameterExtractor::new();
247
248        let params = extractor
249            .extract("urn:example:battery:001", "thermal")
250            .await
251            .unwrap();
252
253        assert_eq!(params.entity_iri, "urn:example:battery:001");
254        assert_eq!(params.simulation_type, "thermal");
255        assert_eq!(params.time_steps, 100);
256        assert_eq!(params.time_span, (0.0, 100.0));
257
258        // Check thermal initial conditions
259        let temp = params.initial_conditions.get("temperature").unwrap();
260        assert_eq!(temp.value, 293.15); // 20°C
261        assert_eq!(temp.unit, "K");
262
263        // Check material properties
264        assert!(params
265            .material_properties
266            .contains_key("thermal_conductivity"));
267        assert!(params.material_properties.contains_key("specific_heat"));
268        assert!(params.material_properties.contains_key("density"));
269    }
270
271    #[tokio::test]
272    async fn test_parameter_extractor_mechanical() {
273        let extractor = ParameterExtractor::new();
274
275        let params = extractor
276            .extract("urn:example:beam:001", "mechanical")
277            .await
278            .unwrap();
279
280        assert_eq!(params.simulation_type, "mechanical");
281
282        // Check mechanical initial conditions
283        let disp = params.initial_conditions.get("displacement").unwrap();
284        assert_eq!(disp.value, 0.0);
285        assert_eq!(disp.unit, "m");
286
287        // Check mechanical properties
288        let youngs = params.material_properties.get("youngs_modulus").unwrap();
289        assert_eq!(youngs.value, 200e9); // Steel
290        assert_eq!(youngs.unit, "Pa");
291
292        let poisson = params.material_properties.get("poisson_ratio").unwrap();
293        assert_eq!(poisson.value, 0.3);
294        assert_eq!(poisson.unit, "dimensionless");
295    }
296
297    #[tokio::test]
298    async fn test_parameter_extractor_with_store() {
299        let extractor = ParameterExtractor::with_store("./test_store");
300
301        let params = extractor
302            .extract("urn:example:entity", "thermal")
303            .await
304            .unwrap();
305
306        // Should still work with mock parameters
307        assert!(!params.entity_iri.is_empty());
308    }
309
310    #[test]
311    fn test_physical_quantity_serialization() {
312        let quantity = PhysicalQuantity {
313            value: 300.0,
314            unit: "K".to_string(),
315            uncertainty: Some(0.5),
316        };
317
318        let json = serde_json::to_string(&quantity).unwrap();
319        let deserialized: PhysicalQuantity = serde_json::from_str(&json).unwrap();
320
321        assert_eq!(deserialized.value, 300.0);
322        assert_eq!(deserialized.unit, "K");
323        assert_eq!(deserialized.uncertainty, Some(0.5));
324    }
325
326    #[test]
327    fn test_simulation_parameters_serialization() {
328        let mut ic = HashMap::new();
329        ic.insert(
330            "temperature".to_string(),
331            PhysicalQuantity {
332                value: 293.15,
333                unit: "K".to_string(),
334                uncertainty: None,
335            },
336        );
337
338        let params = SimulationParameters {
339            entity_iri: "urn:test".to_string(),
340            simulation_type: "thermal".to_string(),
341            initial_conditions: ic,
342            boundary_conditions: Vec::new(),
343            time_span: (0.0, 100.0),
344            time_steps: 50,
345            material_properties: HashMap::new(),
346            constraints: Vec::new(),
347        };
348
349        let json = serde_json::to_string(&params).unwrap();
350        let deserialized: SimulationParameters = serde_json::from_str(&json).unwrap();
351
352        assert_eq!(deserialized.entity_iri, "urn:test");
353        assert_eq!(deserialized.simulation_type, "thermal");
354        assert_eq!(deserialized.time_steps, 50);
355    }
356
357    #[tokio::test]
358    async fn test_parameter_extractor_unknown_type() {
359        let extractor = ParameterExtractor::new();
360
361        let params = extractor
362            .extract("urn:example:entity", "unknown_type")
363            .await
364            .unwrap();
365
366        // Should return empty parameters for unknown types
367        assert!(params.initial_conditions.is_empty());
368        assert!(params.material_properties.is_empty());
369    }
370}
oxirs_physics/simulation/parameter_extraction.rs

oxirs_physics/simulation/
parameter_extraction.rs
