io.micronaut.context.env.MapPropertySource Maven / Gradle / Ivy
/*
* Copyright 2017-2020 original 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 io.micronaut.context.env;
import java.util.Collections;
import java.util.Iterator;
import java.util.Map;
/**
* A {@link PropertySource} that uses a map.
*
* @author Graeme Rocher
* @since 1.0
*/
public class MapPropertySource implements PropertySource {
private final String name;
private final Map map;
/**
* Creates a map property source.
*
* @param name The name of the property source
* @param map The map
*/
public MapPropertySource(String name, Map map) {
this.name = name;
this.map = map;
}
@Override
public String getName() {
return name;
}
@Override
public Object get(String key) {
return map.get(key);
}
@Override
public Iterator iterator() {
Iterator i = map.keySet().iterator();
return new Iterator<>() {
@Override
public boolean hasNext() {
return i.hasNext();
}
@Override
public String next() {
return i.next().toString();
}
};
}
/**
* The backing map (unmodifiable).
*
* @return The backing map
*/
public Map asMap() {
return Collections.unmodifiableMap(map);
}
/**
* Create a new {@link MapPropertySource} from the given map.
*
* @param name The name of the property source
* @param map The map
* @return The map property source
*/
public static MapPropertySource of(String name, Map map) {
return new MapPropertySource(name, map);
}
@Override
public String toString() {
return getName();
}
}