/*
* Copyright [2014] [Christian Loehnert, krampenschiesser@gmail.com]
* 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 de.ks.persistence.entity;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
public interface IdentifyableEntity {
static ThreadLocal<MethodHandle> handle = ThreadLocal.withInitial(IdentifyableEntity::resolveHandle);
String getIdPropertyName();
Object getIdValue();
default MethodHandle getIdHandle() {
return handle.get();
}
static MethodHandle resolveHandle() {
try {
return MethodHandles.lookup().findVirtual(IdentifyableEntity.class, "getIdValue", MethodType.methodType(Object.class));
} catch (NoSuchMethodException | IllegalAccessException e) {
throw new RuntimeException(e);
}
}
}