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/**
* Copyright (C) 2006 Google Inc.
*
* 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 com.google.inject.name;
import com.google.inject.Binder;
import com.google.inject.Key;
import java.util.Enumeration;
import java.util.Map;
import java.util.Properties;
/**
* Utility methods for use with {@code @}{@link Named}.
*
* @author crazybob@google.com (Bob Lee)
*/
public class Names {
private Names() {}
/**
* Creates a {@link Named} annotation with {@code name} as the value.
*/
public static Named named(String name) {
return new NamedImpl(name);
}
/**
* Creates a constant binding to {@code @Named(key)} for each entry in
* {@code properties}.
*/
public static void bindProperties(Binder binder, Map<String, String> properties) {
binder = binder.skipSources(Names.class);
for (Map.Entry<String, String> entry : properties.entrySet()) {
String key = entry.getKey();
String value = entry.getValue();
binder.bind(Key.get(String.class, new NamedImpl(key))).toInstance(value);
}
}
/**
* Creates a constant binding to {@code @Named(key)} for each property. This
* method binds all properties including those inherited from
* {@link Properties#defaults defaults}.
*/
public static void bindProperties(Binder binder, Properties properties) {
binder = binder.skipSources(Names.class);
// use enumeration to include the default properties
for (Enumeration<?> e = properties.propertyNames(); e.hasMoreElements(); ) {
String propertyName = (String) e.nextElement();
String value = properties.getProperty(propertyName);
binder.bind(Key.get(String.class, new NamedImpl(propertyName))).toInstance(value);
}
}
}
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