Bugfix: propyerty key is value of enum constant.

src/main/java/de/kreth/property2java/Generator.java

@@ -3,12 +3,13 @@ package de.kreth.property2java;
 import java.io.IOException;
 import java.io.Reader;
 import java.io.Writer;
+import java.text.DateFormat;
 import java.util.ArrayList;
+import java.util.Date;
 import java.util.Enumeration;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
-import java.util.Map.Entry;
 import java.util.Properties;
 
 import de.kreth.property2java.cli.ArgumentConfiguration;
@@ -17,9 +18,11 @@ import freemarker.template.TemplateException;
 
 public class Generator {
 
-	private Configuration config;
+	private static final DateFormat dateTimeInstance = DateFormat.getDateTimeInstance();
 
-	private Template template;
+	private final Configuration config;
+
+	private final Template template;
 
 	public Generator(Configuration config) {
 		this.config = config;
@@ -27,14 +30,13 @@ public class Generator {
 			template = FreemarkerConfig.INSTANCE.getTemplate();
 		}
 		catch (IOException e) {
-
 			throw new IllegalStateException("Unable to load freemarker template", e);
 		}
 	}
 
 	public void start() throws IOException, TemplateException {
 
-		for (Entry<String, Reader> entry : config.getInput().entrySet()) {
+		for (Map.Entry<String, Reader> entry : config.getInput().entrySet()) {
 			String fileName = entry.getKey();
 			Writer out = config.outWriter(fileName);
 			Properties properties = new Properties();
@@ -47,11 +49,13 @@ public class Generator {
 			throws IOException, TemplateException {
 
 		Map<String, Object> root = new HashMap<>();
+		root.put("generator_name", getClass().getName());
+		root.put("generation_date", dateTimeInstance.format(new Date()));
 		root.put("package", config.getPackage());
 		root.put("fileName", fileName);
 		root.put("classname", config.mapFilenameToClassName(fileName));
 
-		List<Entry<String, String>> entries = new ArrayList<>();
+		List<Entry> entries = new ArrayList<>();
 
 		root.put("entries", entries);
 
@@ -62,24 +66,8 @@ public class Generator {
 			final String propertyKeyString = propertyNames.nextElement();
 			final String propertyValue = properties.getProperty(propertyKeyString);
 
-			Entry<String, String> entry = new Entry<String, String>() {
-
-				@Override
-				public String getKey() {
-					return propertyKeyString.toUpperCase().replaceAll("[\\.-]", "_");
-				}
-
-				@Override
-				public String getValue() {
-					return propertyValue;
-				}
-
-				@Override
-				public String setValue(String value) {
-					throw new UnsupportedOperationException("Set Value not supported!");
-				}
-			};
-			entries.add(entry);
+			entries.add(new Entry(propertyKeyString.toUpperCase().replaceAll("[\\.-]", "_"), propertyKeyString,
+					propertyValue));
 		}
 		template.process(root, out);
 	}
@@ -89,4 +77,32 @@ public class Generator {
 		generator.start();
 	}
 
+	public class Entry {
+
+		public final String constant;
+
+		public final String key;
+
+		public final String value;
+
+		public Entry(String constant, String key, String value) {
+			super();
+			this.constant = constant;
+			this.key = key;
+			this.value = value;
+		}
+
+		public String getConstant() {
+			return constant;
+		}
+
+		public String getKey() {
+			return key;
+		}
+
+		public String getValue() {
+			return value;
+		}
+
+	}
 }

src/main/resources/template/enum_template.tpl

@@ -4,16 +4,19 @@
 import java.util.ResourceBundle;
 import java.util.function.UnaryOperator;
 
+import javax.annotation.processing.Generated;
+
 /**
- * Property key from ${fileName}
+ * Property keys from ${fileName}
  */
+@Generated(date = "${generation_date}", value = "${generator_name}")
 public enum ${classname} {
 
-<#list entries as entry>
+<#list entries as e>
 	/**
-	 * "${entry.value}"
+	 * ${e.key} = "${e.value}"
 	 */
-	${entry.key} ("${entry.value}")<#sep>,
+	${e.constant} ("${e.key}")<#sep>,
 </#sep>
 </#list>;