Parameters

public Object getPropertyValue(E_product product, String propertyName)
        throws SdaiException {
    E_product_definition pd = getDesignDefinition(product);
    E_shape_aspect shapeAspect = getShapeAspectForProperty(pd, propertyName);

    if (shapeAspect == null) return null;

    E_property_definition propDef = getPropertyDefinition(shapeAspect);
    E_property_definition_representation pdr =
        getPropertyDefinitionRepresentation(propDef);
    E_representation rep = pdr.getUsed_representation(null);

    // Get the first representation item
    A_representation_item items = rep.getItems(null);
    E_representation_item item = items.getByIndex(1);

    if (item instanceof E_measure_representation_item) {
        E_measure_representation_item mri = (E_measure_representation_item) item;
        return mri.getMeasure(null);
    }
    return null;
}

public Map<String, Object> getAllProperties(E_product product)
        throws SdaiException {
    Map<String, Object> properties = new LinkedHashMap<>();
    E_product_definition pd = getDesignDefinition(product);
    List<E_property_definition> propDefs = getPropertyDefinitions(pd);

    for (E_property_definition propDef : propDefs) {
        String name = propDef.getName(null);
        Object value = getPropertyValue(propDef);
        if (value != null) {
            properties.put(name, value);
        }
    }
    return properties;
}

public double getResistance(E_product resistor) throws SdaiException {
    Object value = getPropertyValue(resistor, "resistance");
    if (value instanceof Number) {
        return ((Number) value).doubleValue();
    }
    throw new IllegalArgumentException("No resistance property found");
}

public double getCapacitance(E_product capacitor) throws SdaiException {
    Object value = getPropertyValue(capacitor, "capacitance");
    if (value instanceof Number) {
        return ((Number) value).doubleValue();
    }
    throw new IllegalArgumentException("No capacitance property found");
}

public String getPropertyUnit(E_product product, String propertyName)
        throws SdaiException {
    // Navigate to the unit entity
    E_representation rep = getPropertyRepresentation(product, propertyName);
    E_representation_context context = rep.getContext_of_items(null);
    // Extract unit information from context
    return getUnitName(context);
}

public List<ComponentParameter> extractAllParameters(E_product assembly)
        throws SdaiException {
    List<ComponentParameter> params = new ArrayList<>();
    List<E_product> components = getComponentProducts(assembly);

    for (E_product component : components) {
        Map<String, Object> properties = getAllProperties(component);
        for (Map.Entry<String, Object> entry : properties.entrySet()) {
            params.add(new ComponentParameter(
                component.getId(null),
                entry.getKey(),
                entry.getValue()
            ));
        }
    }
    return params;
}