42BV#47 added EasyAbstractConverter class with pre-implemented toStri…

…ng() method

src/main/java/org/csveed/bean/conversion/EasyAbstractConverter.java

@@ -0,0 +1,14 @@
+package org.csveed.bean.conversion;
+
+public abstract class EasyAbstractConverter<K> extends AbstractConverter<K> {
+
+    public EasyAbstractConverter(Class<K> clazz) {
+        super(clazz);
+    }
+
+    @Override
+    public String toString(K value) throws Exception {
+        return null;
+    }
+
+}

src/test/java/org/csveed/bean/conversion/Coordinate.java

@@ -0,0 +1,41 @@
+package org.csveed.bean.conversion;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public class Coordinate {
+
+    private final Integer x;
+
+    private final Integer y;
+
+    public Coordinate(Integer x, Integer y) {
+        this.x = x;
+        this.y = y;
+    }
+
+    public Integer getX() {
+        return x;
+    }
+
+    public Integer getY() {
+        return y;
+    }
+
+    public static Coordinate fromString(String coordinateText) {
+        Pattern r = Pattern.compile("(\\d+)/(\\d+)");
+        Matcher m = r.matcher(coordinateText);
+        if (m.find()) {
+            return new Coordinate(
+                    Integer.parseInt(m.group(1)),
+                    Integer.parseInt(m.group(2))
+            );
+        }
+        return null;
+    }
+
+    public String toString() {
+        return x + "/" + y;
+    }
+
+}

src/test/java/org/csveed/bean/conversion/EasyAbstractConverterTest.java

@@ -0,0 +1,21 @@
+package org.csveed.bean.conversion;
+
+import org.junit.Test;
+
+import static junit.framework.Assert.assertEquals;
+
+public class EasyAbstractConverterTest {
+
+    @Test
+    public void testEasyAbstractConverter() throws Exception {
+        Converter<Coordinate> converter = new EasyAbstractConverter<Coordinate>(Coordinate.class) {
+            @Override
+            public Coordinate fromString(String text) throws Exception {
+                return Coordinate.fromString(text);
+            }
+        };
+        Coordinate coords = converter.fromString("11/38");
+        assertEquals((Integer)11, coords.getX());
+        assertEquals((Integer)38, coords.getY());
+    }
+}