added reader config

Author: TomBlock

core/src/main/java/com/bc/fiduceo/core/SystemConfig.java

@@ -56,7 +56,7 @@ public static SystemConfig load(InputStream inputStream) {
             final Document document = saxBuilder.build(inputStream);
             return new SystemConfig(document);
         } catch (JDOMException | IOException | RuntimeException e) {
-            throw new RuntimeException("Unable to initialize use case configuration: " + e.getMessage(), e);
+            throw new RuntimeException("Unable to initialize system configuration: " + e.getMessage(), e);
         }
     }
 

core/src/main/java/com/bc/fiduceo/reader/slstr/SlstrReaderConfig.java

@@ -0,0 +1,43 @@
+package com.bc.fiduceo.reader.slstr;
+
+import com.bc.fiduceo.util.JDomUtils;
+import org.jdom.Document;
+import org.jdom.Element;
+import org.jdom.JDOMException;
+import org.jdom.input.SAXBuilder;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+class SlstrReaderConfig {
+
+    private boolean usePixelGeoCoding;
+
+    SlstrReaderConfig(Document document) {
+        this();
+
+        final Element rootElement = JDomUtils.getMandatoryRootElement("slstr-reader-config", document);
+        final Element usePixelGeoCodingElement = rootElement.getChild("use-pixel-geocoding");
+        if (usePixelGeoCodingElement != null) {
+            usePixelGeoCoding = Boolean.parseBoolean(usePixelGeoCodingElement.getTextTrim());
+        }
+    }
+
+    SlstrReaderConfig() {
+        usePixelGeoCoding = false;
+    }
+
+    static SlstrReaderConfig load(InputStream inputStream) {
+        final SAXBuilder saxBuilder = new SAXBuilder();
+        try {
+            final Document document = saxBuilder.build(inputStream);
+            return new SlstrReaderConfig(document);
+        } catch (JDOMException | IOException | RuntimeException e) {
+            throw new RuntimeException("Unable to initialize reader configuration: " + e.getMessage(), e);
+        }
+    }
+
+    boolean usePixelGeoCoding() {
+        return usePixelGeoCoding;
+    }
+}

core/src/test/java/com/bc/fiduceo/reader/slstr/SlstrReaderConfigTest.java

@@ -0,0 +1,30 @@
+package com.bc.fiduceo.reader.slstr;
+
+import org.junit.Test;
+
+import java.io.ByteArrayInputStream;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+public class SlstrReaderConfigTest {
+
+    @Test
+    public void testConstruction() {
+        final SlstrReaderConfig config = new SlstrReaderConfig();
+
+        assertFalse(config.usePixelGeoCoding());
+    }
+
+    @Test
+    public void testLoadAndGet_usePixelGeoCoding() {
+        final String useCaseXml = "<slstr-reader-config>" +
+                "    <use-pixel-geocoding>true</use-pixel-geocoding>" +
+                "</slstr-reader-config>";
+        final ByteArrayInputStream inputStream = new ByteArrayInputStream(useCaseXml.getBytes());
+
+        final SlstrReaderConfig config = SlstrReaderConfig.load(inputStream);
+
+        assertTrue(config.usePixelGeoCoding());
+    }
+}

src/main/config/slstr-reader-config.xml

@@ -0,0 +1,3 @@
+<slstr-reader-config>
+    <use-pixel-geocoding>false</use-pixel-geocoding>
+</slstr-reader-config>