org.wamblee.cdi.CdiInjector Maven / Gradle / Ivy
/*
* Copyright 2005-2010 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
*
* 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.wamblee.cdi;
import javax.enterprise.context.spi.CreationalContext;
import javax.enterprise.inject.spi.AnnotatedType;
import javax.enterprise.inject.spi.BeanManager;
import javax.enterprise.inject.spi.InjectionTarget;
import org.wamblee.inject.Injector;
/**
* Class encapsulating bean injection into a specific non-contextual object of a
* given class.
*
* @author Erik Brakkee
*/
public class CdiInjector implements Injector {
private Class clazz;
private InjectionTarget target;
private CreationalContext ctx;
/**
* Constructs the injector.
*
* @param aMgr
* Bean manager.
* @param aClass
* Class to analyse for injection.
*/
public CdiInjector(BeanManager aMgr, Class aClass) {
clazz = aClass;
AnnotatedType type = aMgr.createAnnotatedType(aClass);
target = aMgr.createInjectionTarget(type);
ctx = aMgr.createCreationalContext(null);
}
/*
* (non-Javadoc)
*
* @see org.wamblee.cdi.Injector#inject(java.lang.Object)
*/
public void inject(Object aComponent) {
if (aComponent != null) {
if (!clazz.isInstance(aComponent)) {
throw new IllegalArgumentException("Object '" + aComponent +
"' is of type " + aComponent.getClass().getName() +
" but expected " + clazz.getName());
}
target.inject(aComponent, ctx);
}
}
}