Java tutorial
/* * Copyright 2002-2014 the original author or authors. * * 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 * * https://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.springframework.core.env; import java.util.Map; import org.springframework.lang.Nullable; import org.springframework.util.StringUtils; /** * {@link PropertySource} that reads keys and values from a {@code Map} object. * * @author Chris Beams * @author Juergen Hoeller * @since 3.1 * @see PropertiesPropertySource */ public class MapPropertySource extends EnumerablePropertySource<Map<String, Object>> { public MapPropertySource(String name, Map<String, Object> source) { super(name, source); } @Override @Nullable public Object getProperty(String name) { return this.source.get(name); } @Override public boolean containsProperty(String name) { return this.source.containsKey(name); } @Override public String[] getPropertyNames() { return StringUtils.toStringArray(this.source.keySet()); } }