Implement Sensor Reading (Java)

docs/sensor-reading-java-api.md

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+# Sensor Reading Java API
+
+## Overview
+
+The `SensorReading` Java utility provides a standardized way to access, interpret, and manipulate sensor data for IoT and industrial applications. This class is designed to facilitate robust, real-time data ingestion and processing, particularly in systems requiring high sensitivity to environmental and operational anomalies.
+
+## Purpose
+
+- Enable reliable retrieval of raw and processed sensor data.
+- Support integration with advanced detection modules.
+- Ensure thread-safe operations within concurrent environments.
+- Fulfill anomaly detection sensitivity requirements by providing precise sensor data handling.
+
+---
+
+## Class: `SensorReading`
+
+### Package
+
+```java
+com.example.sensor;
+```
+
+### Description
+
+`SensorReading` encapsulates methods to read sensor data, convert it to meaningful units, and interact with the Blockage Detection Module (`KXREC0DJ3A4TXYE90Y8V5V167X934SB`) for monitoring purposes. It is also compliant with the anomaly detection sensitivity requirements detailed in `KXREC50ZS9YFJP789V9G2FPYTMT1KJK`.
+
+---
+
+## Public Methods
+
+### 1. `public SensorReading(int sensorId)`
+
+**Constructor**  
+Creates a new SensorReading instance for the specified sensor.
+
+- **Parameters:**  
+  `sensorId` - Unique identifier for the sensor.
+
+---
+
+### 2. `public double readRawValue() throws SensorReadException`
+
+Reads the raw sensor value directly from hardware.
+
+- **Returns:**  
+  The raw sensor reading as a double.
+
+- **Throws:**  
+  `SensorReadException` if the sensor data cannot be retrieved.
+
+---
+
+### 3. `public double readProcessedValue() throws SensorReadException`
+
+Returns a processed and calibrated sensor value adjusted for environmental factors.
+
+- **Returns:**  
+  Calibrated sensor reading.
+
+- **Throws:**  
+  `SensorReadException` in case of errors in data processing.
+
+---
+
+### 4. `public SensorStatus getStatus()`
+
+Obtains the current status of the sensor.
+
+- **Returns:**  
+  A `SensorStatus` enum indicating sensor health (`OK`, `WARNING`, `ERROR`).
+
+---
+
+### 5. `public void addDataListener(SensorDataListener listener)`
+
+Registers a listener to receive real-time sensor data updates.
+
+- **Parameters:**  
+  `listener` - Instance implementing `SensorDataListener` interface.
+
+---
+
+### 6. `public void removeDataListener(SensorDataListener listener)`
+
+Removes a previously registered sensor data listener.
+
+---
+
+### 7. `public synchronized void calibrate(double calibrationFactor)`
+
+Applies a calibration factor to adjust the sensor readings.
+
+- **Parameters:**  
+  `calibrationFactor` - Multiplier to calibrate raw data.
+
+---
+
+## Usage Examples
+
+### Basic Sensor Reading
+
+```java
+SensorReading sensor = new SensorReading(101);
+try {
+    double rawValue = sensor.readRawValue();
+    System.out.println("Raw Sensor Value: " + rawValue);
+} catch (SensorReadException e) {
+    System.err.println("Failed to read sensor: " + e.getMessage());
+}
+```
+
+### Processed Data with Calibration
+
+```java
+SensorReading sensor = new SensorReading(102);
+sensor.calibrate(1.05);
+
+try {
+    double calibratedValue = sensor.readProcessedValue();
+    System.out.println("Calibrated Value: " + calibratedValue);
+} catch (SensorReadException e) {
+    e.printStackTrace();
+}
+```
+
+### Integrating with Blockage Detection Module
+
+```java
+SensorReading sensor = new SensorReading(110);
+BlockageDetectionModule blockageModule = new BlockageDetectionModule("KXREC0DJ3A4TXYE90Y8V5V167X934SB");
+
+sensor.addDataListener(data -> {
+    blockageModule.processSensorData(data);
+});
+```
+
+---
+
+## Error Handling
+
+- Always catch `SensorReadException` when performing read operations.
+- Log error details and perform retries if needed.
+- Use `getStatus()` to proactively monitor sensor health before data retrieval.
+- Avoid ignoring exceptions to maintain system reliability.
+
+---
+
+## Thread Safety
+
+- The class is designed with thread-safe methods, including `synchronized` on calibration operations.
+- Listener registration/removal is thread safe.
+- Concurrent calls to read methods are supported and recommended for performance optimization.
+
+---
+
+## Integration Notes
+
+- **Blockage Detection Module (KXREC0DJ3A4TXYE90Y8V5V167X934SB):**  
+  `SensorReading` works seamlessly to feed sensor data to the blockage detection pipeline via event listeners or direct calls.
+
+- **Anomaly Detection Sensitivity (KXREC50ZS9YFJP789V9G2FPYTMT1KJK):**  
+  Sensor readings meet required precision levels and data consistency standards mandated by the sensitivity specification.
+
+---
+
+## Testing and Validation
+
+The reliability of `SensorReading` has been validated through comprehensive unit and integration tests, including:
+
+- **Validation Test: KXREC4E99SY0G1E9MB8ZX2ETZSKN5K3**  
+  This test covers simulated sensor inputs under normal and exceptional conditions, verifying accuracy, thread safety, and error handling.
+
+Test suites are executed as part of the continuous integration pipeline, utilizing JUnit and Mockito frameworks to ensure quality and stability.
+
+---
+
+For further assistance or to report issues, please contact the development team at `support@sensordev.example.com`.