Added polar data file.

Added PolarParse class - currently commented out as it depends on polar table class. #story[900]
2017-05-10 15:11:51 +12:00
parent a4480f3ccf
commit aeee8ca748
4 changed files with 232 additions and 0 deletions
@@ -3,5 +3,175 @@ package seng302.DataInput;
 /**
 * Created by hba56 on 10/05/17.
 */
+
+import seng302.Exceptions.InvalidPolarFileException;
+import seng302.Model.Polar;
+
+import java.io.*;
+import java.util.ArrayList;
+
+
+/**
+ * Responsible for parsing a polar data file, and creating a polar data object.
+ */
 public class PolarParser {
+
+
+    /**
+     * Given a filename, this function parses it and generates a PolarTable object, which can be queried for polar information.
+     * @param filename
+     * @return
+     */
+    /*
+    ///TEMP PolarTable = ArrayList<Polar>
+    public static ArrayList<Polar> parse(String filename) throws InvalidPolarFileException {
+        //Temporary table to return later.
+        ArrayList<Polar> polarTable = new ArrayList<Polar>();
+
+
+        //Open the file for reading.
+        InputStream fileStream = PolarParser.class.getClassLoader().getResourceAsStream(filename);
+        if (fileStream == null) {
+            throw new InvalidPolarFileException("Could not open polar data file: " + filename);
+        }
+        //Wrap it with buffered input stream to set encoding and buffer.
+        InputStreamReader in = null;
+        try {
+            in = new InputStreamReader(fileStream, "UTF-8");
+        } catch (UnsupportedEncodingException e) {
+            throw new InvalidPolarFileException("Unsupported encoding: UTF-8", e);
+        }
+        BufferedReader inputStream = new BufferedReader(in);
+
+
+        //We expect the polar data file to have the column headings:
+        // Tws, Twa0, Bsp0, Twa1, Bsp1, UpTwa, UpBsp, Twa2, Bsp2, Twa3, Bsp3, Twa4, Bsp4, Twa5, Bsp5, Twa6, Bsp6, DnTwa, DnBsp, Twa7, Bsp7
+        //and to have 7 rows of data.
+        //Angles are expected to be in degrees, and velocities in knots.
+
+
+        //We read the heading and data rows, and split them into arrays of elements.
+        String[] headings;
+        ArrayList<String[]> dataRows = new ArrayList<>(7);
+        try {
+            //Heading.
+            //Read heading row.
+            String headingRow = inputStream.readLine();
+
+            //Split it into individual headings.
+            headings = headingRow.split(",");
+
+
+            //Data rows.
+            while (inputStream.ready()) {
+                //Read line.
+                String dataRow = inputStream.readLine();
+
+                //Split line.
+                String[] dataElements = dataRow.split(",");
+
+                //Add to collection.
+                dataRows.add(dataElements);
+
+            }
+
+        } catch (IOException e) {
+            throw new InvalidPolarFileException("Could not read from polar data file: " + filename, e);
+        }
+
+        //Finished reading in data, now we need to construct polar rows and table from it.
+        //For each row...
+        int rowNumber = 0;
+        for (String[] row : dataRows) {
+            //Create Polar row object.
+            Polar polarRow = new Polar();
+
+            //For each column...
+            for (int i = 0; i < row.length; i++) {
+
+                //Convert value to a double.
+                Double value;
+                try {
+                    value = Double.parseDouble(row[i]);
+                }
+                catch (NumberFormatException e) {
+                    throw new InvalidPolarFileException("Could not convert (Row,Col): (" + rowNumber + "," + i +") = " + row[i] + "to a double.", e);
+                }
+
+                //Set the values of the row.
+                //For reference:
+                //Tws, Twa0, Bsp0, Twa1, Bsp1, UpTwa, UpBsp, Twa2, Bsp2, Twa3, Bsp3, Twa4, Bsp4, Twa5, Bsp5, Twa6, Bsp6, DnTwa, DnBsp, Twa7, Bsp7
+                if (headings[i] == "Tws") {
+                    polarRow.setTrueWindSpeed(value);
+                }
+                else if (headings[i] == "Twa0") {
+                    polarRow.setTrueWindAngle0(value);
+                }
+                else if (headings[i] == "Bsp0") {
+                    polarRow.setBoatSpeed0(value);
+                }
+                else if (headings[i] == "Twa1") {
+                    polarRow.setTrueWindAngle1(value);
+                }
+                else if (headings[i] == "Bsp1") {
+                    polarRow.setBoatSpeed1(value);
+                }
+                else if (headings[i] == "UpTwa") {
+                    polarRow.setUpTrueWindAngel(value);
+                }
+                else if (headings[i] == "UpBsp") {
+                    polarRow.setUpBoatSpeed(value);
+                }
+                else if (headings[i] == "Twa2") {
+                    polarRow.setTrueWindAngle2(value);
+                }
+                else if (headings[i] == "Bsp2") {
+                    polarRow.setBoatSpeed2(value);
+                }
+                else if (headings[i] == "Twa3") {
+                    polarRow.setTrueWindAngle3(value);
+                }
+                else if (headings[i] == "Bsp3") {
+                    polarRow.setBoatSpeed3(value);
+                }
+                else if (headings[i] == "Twa4") {
+                    polarRow.setTrueWindAngle4(value);
+                }
+                else if (headings[i] == "Bsp4") {
+                    polarRow.setBoatSpeed4(value);
+                }
+                else if (headings[i] == "Twa5") {
+                    polarRow.setTrueWindAngle5(value);
+                }
+                else if (headings[i] == "Bsp5") {
+                    polarRow.setBoatSpeed5(value);
+                }
+                else if (headings[i] == "Twa6") {
+                    polarRow.setTrueWindAngle6(value);
+                }
+                else if (headings[i] == "Bsp6") {
+                    polarRow.setBoatSpeed6(value);
+                }
+                else if (headings[i] == "Twa7") {
+                    polarRow.setTrueWindAngle7(value);
+                }
+                else if (headings[i] == "Bsp7") {
+                    polarRow.setBoatSpeed7(value);
+                }
+
+                //Add the polar row to the polar table.
+                polarTable.add(polarRow);
+
+            }
+
+            //Increment row number.
+            rowNumber++;
+
+        }
+
+
+        return polarTable;
+    }
+*/
+
 }
@@ -0,0 +1,28 @@
+package seng302.Exceptions;
+
+/**
+ * Created by f123 on 10-May-17.
+ */
+
+/**
+ * An exception thrown when we cannot parse a polar data file.
+ */
+public class InvalidPolarFileException extends RuntimeException {
+
+    /**
+     * Constructs the exception with a given message.
+     * @param message Message to store.
+     */
+    public InvalidPolarFileException(String message) {
+        super(message);
+    }
+
+    /**
+     * Constructs the exception with a given message and cause.
+     * @param message Message to store.
+     * @param cause Cause to store.
+     */
+    public InvalidPolarFileException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}
@@ -0,0 +1,8 @@
+Tws,Twa0,Bsp0,Twa1,Bsp1,UpTwa,UpBsp,Twa2,Bsp2,Twa3,Bsp3,Twa4,Bsp4,Twa5,Bsp5,Twa6,Bsp6,DnTwa,DnBsp,Twa7,Bsp7
+4,0,0,30,4,45,8,60,9,75,10,90,10,115,10,145,10,155,10,175,4
+8,0,0,30,7,43,10,60,11,75,11,90,11,115,12,145,12,153,12,175,10
+12,0,0,30,11,43,14.4,60,16,75,20,90,23,115,24,145,23,153,21.6,175,14
+16,0,0,30,12,42,19.2,60,25,75,27,90,31,115,32,145,30,153,28.8,175,20
+20,0,0,30,13,41,24,60,29,75,37,90,39,115,40,145,38,153,36,175,24
+25,0,0,30,15,40,30,60,38,75,44,90,49,115,50,145,49,151,47,175,30
+30,0,0,30,15,42,30,60,37,75,42,90,48,115,49,145,48,150,46,175,32
@@ -0,0 +1,26 @@
+package seng302.DataInput;
+
+import org.testng.annotations.Test;
+
+import java.io.File;
+
+import static org.testng.Assert.*;
+
+/**
+ * Created by f123 on 10-May-17.
+ */
+public class PolarParserTest {
+
+    @Test
+    /**
+     * Tests if we can parse a polar data file (stored in a string), and create a polar table.
+     */
+    public void testParse() throws Exception {
+
+
+        //Polars = PolarParser.parse("polars/acc_polars.csv");
+
+
+    }
+
+}