/*
* Copyright 2013 Agorava
*
* 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 org.agorava.spi;
import org.agorava.api.atinject.ProviderRelated;
import org.agorava.api.exception.AgoravaException;
import java.lang.annotation.Annotation;
/**
* Root of all providers services configuration
*
* @author Antoine Sabot-Durand
*/
public abstract class ProviderConfig {
private final String providerName;
private final Annotation providerAnnotation;
/**
* Default constructor used to find Provider's name in {@link org.agorava.api.atinject.ProviderRelated} meta
* annotation that must be present on mandatory annotation on all concrete ProviderConfig descendants
*/
protected ProviderConfig() {
Annotation res = null;
Class<? extends ProviderConfig> clazz = getClass();
for (Annotation a : clazz.getAnnotations()) {
if (a.annotationType().isAnnotationPresent(ProviderRelated.class)) {
if (res == null)
res = a;
else
throw new AgoravaException("Class " + getClass() + " have more than one ProviderRelated " +
"annotation");
}
}
if (res == null)
throw new AgoravaException("Class " + getClass() + " doesn't have a ProviderRelated annotation");
providerAnnotation = res;
providerName = res.annotationType().getAnnotation(ProviderRelated.class).value();
}
/**
* @return the name of the provider that was resolved at construction time
*/
public String getProviderName() {
return providerName;
}
/**
* @return the Annotation of the provider
*/
public Annotation getProviderAnnotation() {
return providerAnnotation;
}
}