Java tutorial
/* * Copyright 2011-2013 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 kr.debop4j.data.hibernate.interceptor; import com.google.common.base.Objects; import com.google.common.collect.Lists; import kr.debop4j.core.ValueObjectBase; import lombok.Getter; import lombok.Setter; import org.hibernate.EmptyInterceptor; import org.hibernate.type.Type; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.io.Serializable; import java.util.Calendar; import java.util.Iterator; import java.util.List; /** * ? ? ? ? DB? ?. * * @author ? ( sunghyouk.bae@gmail.com ) * @since 12. 12. 16. */ public class LoggingInterceptor extends EmptyInterceptor { private static final Logger log = LoggerFactory.getLogger(LoggingInterceptor.class); private static final boolean isTraceEnabled = log.isTraceEnabled(); private static final long serialVersionUID = -5900714659767205225L; private List<Log> logs = Lists.newArrayList(); @Override public boolean onSave(Object entity, Serializable id, Object[] state, String[] propertyNames, Type[] types) { if (!(entity instanceof Log)) { if (isTraceEnabled) logs.add(new Log("insert", (String) id, entity.getClass().getName())); } return false; } @Override public boolean onFlushDirty(Object entity, Serializable id, Object[] currentState, Object[] previousState, String[] propertyNames, Type[] types) { if (!(entity instanceof Log)) { if (isTraceEnabled) logs.add(new Log("update", (String) id, entity.getClass().getName())); } return false; } @Override public void postFlush(Iterator entities) { // DB? ^^ // if (isTraceEnabled) { for (Log x : logs) { log.debug("[{}]", x); } } logs.clear(); } @Getter @Setter public static class Log extends ValueObjectBase { private String entityName; private String entityId; private String action; private Calendar time; public Log() { } public Log(String action, String entityId, String entityName) { super(); this.action = action; this.entityId = entityId; this.entityName = entityName; this.time = Calendar.getInstance(); } @Override protected Objects.ToStringHelper buildStringHelper() { return super.buildStringHelper().add("entityId", entityId).add("entityName", entityName) .add("action", action).add("timePart", time); } private static final long serialVersionUID = 523516299748244454L; } }