1 files changed, 161 insertions, 0 deletions
diff --git a/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/config/persistence/ConfigurationImpl.java b/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/config/persistence/ConfigurationImpl.java
new file mode 100644
index 000000000..c90b60440
--- /dev/null
+++ b/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/config/persistence/ConfigurationImpl.java
@@ -0,0 +1,161 @@
+package at.gv.egovernment.moa.id.commons.config.persistence;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.persistence.EntityExistsException;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Required;
+import org.springframework.stereotype.Component;
+
+import at.gv.egovernment.moa.id.commons.db.dao.config.ConfigProperty;
+import at.gv.egovernment.moa.id.commons.db.dao.config.ConfigPropertyDao;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonMappingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.type.CollectionType;
+import com.fasterxml.jackson.databind.type.TypeFactory;
+
+/**
+ * The implementation of a key-value configuration implementing the {@link Configuration} interface.
+ * It employs the {@link ConfigPropertyDao} to persist configuration data.
+ */
+@Component
+public class ConfigurationImpl implements Configuration {
+
+	private final Logger log = LoggerFactory.getLogger(getClass());
+	
+	ConfigPropertyDao configPropertyDao;
+	private JsonMapper mapper = new JsonMapper();
+
+	/**
+	 * Sets the {@link ConfigPropertyDao}.
+	 * @param configPropertyDao the ConfigPropertyDao
+	 */
+	@Required
+	public void setConfigPropertyDao(ConfigPropertyDao configPropertyDao) {
+		this.configPropertyDao = configPropertyDao;
+	}
+
+	@Override
+	public List<String> getAllKeys(){
+		try {
+			return this.configPropertyDao.getAllKeys();
+		} catch (Exception e) {
+			log.debug("Error while retrieving a list of all keys in the database.");
+			return null;
+		}
+	}
+
+	@Override
+	public Object get(String key) {
+		// return null if key does not exist
+		try {
+			ConfigProperty property = configPropertyDao.getProperty(key);
+			if (property != null && property.getValue() != null) {
+				return mapper.deserialize(property.getValue(), null);
+			} else {
+				return null;
+			}
+		} catch (IllegalArgumentException e) {
+			log.debug("Error while searching for key '{}' in the database.", key);
+			return null;
+		} catch (Exception e) {
+			log.debug("Error while deserializing value of key '{}' to object.", key);
+			return null;
+		}
+	}
+
+	@Override
+	public <T> T get(String key, Class<T> clazz) {
+		// return null if key does not exist
+		try {
+			ConfigProperty property = configPropertyDao.getProperty(key);
+			if (property != null && property.getValue() != null) {
+				return clazz.cast(mapper.deserialize(property.getValue(), clazz));
+			} else {
+				return null;
+			}
+		} catch (IllegalArgumentException e) {
+			log.debug("Error while searching for key '{}' in the database.", key);
+			return null;
+		} catch (Exception e) {
+			log.debug("Error while deserializing value of key '{}' to object of type {}.", key, clazz.getClass());
+			return null;
+		}
+	}
+
+	@Override
+	public boolean set(String key, Object value) {
+
+		try {
+			if (value == null) {
+				configPropertyDao.delete(key);
+				return true;
+			} else {
+
+				ConfigProperty keyValue = new ConfigProperty();
+				keyValue.setKey(key);
+
+				keyValue.setValue(mapper.serialize(value));
+				configPropertyDao.saveProperty(keyValue);
+				return true;
+			}
+		} catch (JsonProcessingException e) {
+			log.debug("Error while serializing object for key '{}'.", key);
+			return false;
+		} catch (EntityExistsException e) {
+			log.debug("Property '{}' already exists!", key);
+			return false;
+		} catch (Exception e) {
+			log.debug("Error while setting value for key '{}' in the database.", key);
+			return false;
+		}
+	}
+
+	@Override
+	public <T> T get(String key, Class<T> clazz, Object defaultValue) {
+
+		T value = get(key, clazz);
+		if (value != null) {
+			return value;
+		} else {
+			return clazz.cast(defaultValue);
+		}
+	}
+
+	@SuppressWarnings("unchecked")
+	@Override
+	public <T> List<T> getList(String key, Class<T> clazz) {
+
+		CollectionType listType = TypeFactory.defaultInstance().constructCollectionType(List.class, clazz);
+		try {
+			if ((configPropertyDao.getProperty(key) == null)
+					|| (configPropertyDao.getProperty(key).getValue() == null)) {
+				return new ArrayList<T>();
+			}
+			String json = configPropertyDao.getProperty(key).getValue();
+			ObjectMapper mapper = new ObjectMapper();
+
+			return (List<T>) mapper.readValue(json, listType);
+		} catch (JsonMappingException e) {
+			ArrayList<T> tmp = new ArrayList<T>();
+			T value = get(key, clazz);
+			if (value != null) {
+				tmp.add(value);
+			}
+			return tmp;
+		} catch (IOException e) {
+			log.debug("Error while deserializing value for key '{}' to List<{}>.", key, clazz.getClass());
+			return new ArrayList<T>();
+		} catch (Exception e){
+			log.debug("Error while searching key '{}' in the database.", key);
+			return new ArrayList<T>();
+		}
+	}
+	
+}