/***
* Copyright (c) 2009 Caelum - www.caelum.com.br/opensource All rights reserved.
*
* 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 br.com.caelum.vraptor.environment;
import static com.google.common.base.Strings.isNullOrEmpty;
import javax.enterprise.context.ApplicationScoped;
import javax.enterprise.inject.Produces;
import javax.enterprise.inject.spi.Annotated;
import javax.enterprise.inject.spi.InjectionPoint;
import javax.inject.Inject;
/**
* A producer that allows us to inject environment properties. i.e
*
* <pre>
* <code>
* \@Inject \@Qualifier("mail.server.host")
* private String mailHost;
* </code>
* </pre>
*
* @author Rodrigo Turini
* @since 4.0
*/
@ApplicationScoped
public class EnvironmentPropertyProducer {
private final Environment environment;
/**
* @deprecated CDI eyes only
*/
public EnvironmentPropertyProducer() {
this(null);
}
@Inject
public EnvironmentPropertyProducer(Environment environment) {
this.environment = environment;
}
@Produces @Property
public String get(InjectionPoint ip) {
Annotated annotated = ip.getAnnotated();
Property property = annotated.getAnnotation(Property.class);
String key = property.value();
if (isNullOrEmpty(key)) {
key = ip.getMember().getName();
}
String defaultValue = property.defaultValue();
if(!isNullOrEmpty(defaultValue)){
return environment.get(key, defaultValue);
}
return environment.get(key);
}
}