net.e6tech.elements.common.inject.spi.Binding Maven / Gradle / Ivy
/*
* Copyright 2017 Futeh Kao
*
* 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 net.e6tech.elements.common.inject.spi;
import net.e6tech.elements.common.inject.Injector;
import net.e6tech.elements.common.util.SystemException;
/**
* Created by futeh.
*/
class Binding {
private Class implementation;
private Object value;
public Binding() {
}
Binding(Object value) {
this.value = value;
}
Binding(Class implementation) {
this.implementation = implementation;
}
@SuppressWarnings("unchecked")
public Binding getInstance(Injector injector) {
if (implementation != null) {
try {
Object instance = implementation.getDeclaredConstructor().newInstance();
injector.inject(instance);
return new Binding(instance);
} catch (Exception e) {
throw new SystemException(e);
}
}
return this;
}
public Class getImplementation() {
return implementation;
}
public Object getValue() {
return value;
}
}