gresockj commented on a change in pull request #5131: URL: https://github.com/apache/nifi/pull/5131#discussion_r648376393
########## File path: nifi-commons/nifi-property-utils/src/main/java/org/apache/nifi/properties/ApplicationProperties.java ########## @@ -0,0 +1,106 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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.apache.nifi.properties; + +import java.util.Properties; +import java.util.Set; + +/** + * A base interface for configuration properties of an application (e.g. NiFi or NiFi Registry). + */ +public interface ApplicationProperties { + + /** + * Retrieves the property value for the given property key. + * + * @param key the key of property value to lookup + * @return value of property at given key or null if not found + */ + String getProperty(String key); + + /** + * Retrieves the property value for the given property key. + * + * @param key the key of property value to lookup + * @param defaultValue The default value to use if the property does not exist + * @return value of property at given key or null if not found + */ + String getProperty(String key, String defaultValue); + + /** + * Retrieves all known property keys. + * + * @return all known property keys + */ + Set<String> getPropertyKeys(); + + /** + * Returns the number of properties. + * @return The number of properties + */ + int size(); Review comment: It appears it's only used in NiFiProperties itself, so it looks like no. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
