add writer to store the configuration in key-value database

use solely kv database within 'AuthConfigurationProvider'
add constants declaring db keys

4 files changed, 41 insertions, 5 deletions

diff --git a/id/server/moa-id-commons/src/main/java/com/datentechnik/moa/id/conf/persistence/Configuration.java b/id/server/moa-id-commons/src/main/java/com/datentechnik/moa/id/conf/persistence/Configuration.java
index 6ec43c583..43f7d9454 100644
--- a/id/server/moa-id-commons/src/main/java/com/datentechnik/moa/id/conf/persistence/Configuration.java
+++ b/id/server/moa-id-commons/src/main/java/com/datentechnik/moa/id/conf/persistence/Configuration.java
@@ -27,7 +27,7 @@ public interface Configuration {
 	 * @param key
 	 * @param value
 	 */
-	void set(String key, Object value);
+	boolean set(String key, Object value);
 
 	/**
 	 * 
@@ -45,4 +45,11 @@ public interface Configuration {
 	 * @return
 	 */
 	<T> List<T> getList(String key, Class<T> clazz);
+
+	/**
+	 *
+	 * @param key
+	 * @return
+	 */
+	void delete(String key);
 }
\ No newline at end of file
diff --git a/id/server/moa-id-commons/src/main/java/com/datentechnik/moa/id/conf/persistence/ConfigurationImpl.java b/id/server/moa-id-commons/src/main/java/com/datentechnik/moa/id/conf/persistence/ConfigurationImpl.java
index 7a52d0c9d..eebecf509 100644
--- a/id/server/moa-id-commons/src/main/java/com/datentechnik/moa/id/conf/persistence/ConfigurationImpl.java
+++ b/id/server/moa-id-commons/src/main/java/com/datentechnik/moa/id/conf/persistence/ConfigurationImpl.java
@@ -66,7 +66,7 @@ public class ConfigurationImpl implements Configuration {
 	}
 
 	@Override
-	public void set(String key, Object value) {
+	public boolean set(String key, Object value) {
 
 		ConfigProperty keyValue = new ConfigProperty();
 		keyValue.setKey(key);
@@ -74,10 +74,11 @@ public class ConfigurationImpl implements Configuration {
 			keyValue.setValue(mapper.serialize(value));
 			// System.out.println(">> key - value: " + keyValue.getKey() + " - " + keyValue.getValue() + "\n");
 			configPropertyDao.saveProperty(keyValue);
-
+			return true;
 		} catch (JsonProcessingException e) {
 			// TODO do proper error handling
 			e.printStackTrace();
+			return false;
 		}
 
 	}
@@ -98,6 +99,10 @@ public class ConfigurationImpl implements Configuration {
 	public <T> List<T> getList(String key, Class<T> clazz) {
 
 		CollectionType listType = TypeFactory.defaultInstance().constructCollectionType(List.class, clazz);
+
+		if(configPropertyDao.getProperty(key)==null){
+			return new ArrayList<T>();
+		}
 		String json = configPropertyDao.getProperty(key).getValue();
 		ObjectMapper mapper = new ObjectMapper();
 
@@ -120,6 +125,12 @@ public class ConfigurationImpl implements Configuration {
 		return property.getValue();
 	}
 
+	@Override
+	public void delete(String key) {
+		configPropertyDao.delete(key);
+	}
+
+
 	/**
 	 * 
 	 *
@@ -178,4 +189,5 @@ public class ConfigurationImpl implements Configuration {
 
 	};
 
+
 }
diff --git a/id/server/moa-id-commons/src/main/java/com/datentechnik/moa/id/conf/persistence/dal/ConfigPropertyDao.java b/id/server/moa-id-commons/src/main/java/com/datentechnik/moa/id/conf/persistence/dal/ConfigPropertyDao.java
index a11d23ce8..50dddd745 100644
--- a/id/server/moa-id-commons/src/main/java/com/datentechnik/moa/id/conf/persistence/dal/ConfigPropertyDao.java
+++ b/id/server/moa-id-commons/src/main/java/com/datentechnik/moa/id/conf/persistence/dal/ConfigPropertyDao.java
@@ -42,4 +42,11 @@ public interface ConfigPropertyDao {
 	 * @param properties The list containing all the properties to be persisted.
 	 */
 	public void saveProperties(Set<ConfigProperty> properties);
+
+	/**
+	 * Deletes the object associated with the given key.
+	 * @param key the key
+	 */
+	public void delete(String key);
+
 }
diff --git a/id/server/moa-id-commons/src/main/java/com/datentechnik/moa/id/conf/persistence/dal/ConfigPropertyDaoImpl.java b/id/server/moa-id-commons/src/main/java/com/datentechnik/moa/id/conf/persistence/dal/ConfigPropertyDaoImpl.java
index 2b28cb245..752c7dc09 100644
--- a/id/server/moa-id-commons/src/main/java/com/datentechnik/moa/id/conf/persistence/dal/ConfigPropertyDaoImpl.java
+++ b/id/server/moa-id-commons/src/main/java/com/datentechnik/moa/id/conf/persistence/dal/ConfigPropertyDaoImpl.java
@@ -64,12 +64,12 @@ public class ConfigPropertyDaoImpl implements ConfigPropertyDao {
 
 	@Override
 	public List<ConfigProperty> getProperties() {
-		
+
 		if (null == em) {
 			log.error("No EntityManager set!");
 			return null;
 		}
-		
+
 		log.debug("Retrieving all properties from database.");
 		TypedQuery<ConfigProperty> query = em.createQuery("select mc from ConfigProperty mc", ConfigProperty.class);
 		try {
@@ -90,4 +90,14 @@ public class ConfigPropertyDaoImpl implements ConfigPropertyDao {
 		em.flush();
 	}
 
+	@Override
+	public void delete(String key) {
+		log.debug("Deleting entry with key '{}'.", key);
+		try{
+		em.remove(em.find(ConfigProperty.class, key));
+		}catch (IllegalArgumentException e){
+			log.trace("Error while deleting entry with key '{}':" + e.getMessage(), key);
+		}
+	}
+
 }