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/* * Copyright 2014 the original author or authors. *//w w w .j av a2 s .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 org.springframework.sync.diffsync; import java.lang.reflect.Field; import org.springframework.util.ObjectUtils; /** * Determines if two objects are equivalent by comparing their "id" properties. * * @author Craig Walls */ public class IdPropertyEquivalency implements Equivalency { @Override public boolean isEquivalent(Object o1, Object o2) { try { Field idField1 = o1.getClass().getDeclaredField("id"); idField1.setAccessible(true); Object id1 = idField1.get(o1); Field idField2 = o2.getClass().getDeclaredField("id"); idField2.setAccessible(true); Object id2 = idField2.get(o2); return ObjectUtils.nullSafeEquals(id1, id2); } catch (NoSuchFieldException e) { return false; } catch (IllegalAccessException e) { return false; } } }