Created model objects and DB layer.

src/main/groovy/com/jdbernard/nlsongs/model/ApiKey.groovy

@@ -0,0 +1,7 @@
+package com.jdbernard.nlsongs.model
+
+public class ApiKey implements Serializable {
+
+    String key
+    String description
+}

src/main/groovy/com/jdbernard/nlsongs/model/Performance.groovy

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+package com.jdbernard.nlsongs.model
+
+public class Performance implements Serializable {
+
+    int serviceId
+    int songId
+    String pianist
+    String organist
+    String bassist
+    String drummer
+    String guitarist
+    String leader
+}

src/main/groovy/com/jdbernard/nlsongs/model/Service.groovy

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+package com.jdbernard.nlsongs.model
+
+public class Service implements Serializable {
+
+    int id
+    Date date
+    ServiceType serviceType
+}

src/main/groovy/com/jdbernard/nlsongs/model/ServiceType.java

@@ -0,0 +1,3 @@
+package com.jdbernard.nlsongs.model;
+
+public enum ServiceType { SUN_AM, SUN_PM, WED }

src/main/groovy/com/jdbernard/nlsongs/model/Song.groovy

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+package com.jdbernard.nlsongs.model
+
+public class Song implements Serializable {
+
+    int id
+    String name
+    List<String> artists
+}

src/main/groovy/com/jdbernard/nlsongs/model/User.groovy

@@ -0,0 +1,8 @@
+package com.jdbernard.nlsongs.model
+
+public class User {
+
+    int id
+    String username
+    String pwd
+}