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/*
* Copyright © 2016-2018 European Support Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.onap.config.api;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
public class DynamicConfiguration<T> {
private String tenant;
private String namespace;
private String key;
private Configuration configuration;
private Class clazz;
private T defaultValue;
public static <K> DynamicConfiguration<List<K>> getDynConfiguration(String tenant, String namespace, String key,
Class<K> clazz, K defaultValue, Configuration configuration) {
if (clazz.isPrimitive()) {
throw new RuntimeException("Only Wrapper classes like Integer, Long, Double, "
+ "Boolean etc including String are supported.");
}
return getDynamicConfiguration(tenant, namespace, key, getArrayClass(clazz),
Collections.singletonList(defaultValue), configuration);
}
public static <T> DynamicConfiguration<T> getDynamicConfiguration(String tenant, String namespace, String key,
Class<T> clazz, T defaultValue, Configuration configuration) {
DynamicConfiguration<T> dynamicConfiguration = new DynamicConfiguration<>();
dynamicConfiguration.tenant = tenant;
dynamicConfiguration.namespace = namespace;
dynamicConfiguration.key = key;
dynamicConfiguration.clazz = clazz;
dynamicConfiguration.defaultValue = defaultValue;
dynamicConfiguration.configuration = configuration;
return dynamicConfiguration;
}
public static Class getArrayClass(Class clazz) {
Class arrayClass = null;
switch (clazz.getName()) {
case "java.lang.Byte":
arrayClass = Byte[].class;
break;
case "java.lang.Short":
arrayClass = Short[].class;
break;
case "java.lang.Integer":
arrayClass = Integer[].class;
break;
case "java.lang.Long":
arrayClass = Long[].class;
break;
case "java.lang.Float":
arrayClass = Float[].class;
break;
case "java.lang.Double":
arrayClass = Double[].class;
break;
case "java.lang.Boolean":
arrayClass = Boolean[].class;
break;
case "java.lang.Character":
arrayClass = Character[].class;
break;
case "java.lang.String":
arrayClass = String[].class;
break;
default:
}
return arrayClass;
}
public T get() {
Object toReturn = configuration.get(tenant, namespace, key, clazz, Hint.LATEST_LOOKUP, Hint.EXTERNAL_LOOKUP,
Hint.NODE_SPECIFIC);
if (toReturn != null && toReturn.getClass().isArray()) {
toReturn = Arrays.asList((Object[]) toReturn);
}
return toReturn == null ? defaultValue : (T) toReturn;
}
}
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