org.tsm.concharto.lab.audit.SimpleAuditInterceptor.java Source code

Introduction

Here is the source code for org.tsm.concharto.lab.audit.SimpleAuditInterceptor.java

Source

/*******************************************************************************
 * Copyright 2009 Time Space Map, LLC
 * 
 * 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.tsm.concharto.lab.audit;

import java.io.Serializable;
import java.util.Date;

import org.hibernate.EmptyInterceptor;
import org.hibernate.Transaction;
import org.hibernate.type.Type;
import org.tsm.concharto.model.Auditable;

public class SimpleAuditInterceptor extends EmptyInterceptor {

    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    private int updates;
    private int creates;
    private int loads;

    public void onDelete(Object entity, Serializable id, Object[] state, String[] propertyNames, Type[] types) {
        // do nothing
    }

    public boolean onFlushDirty(Object entity, Serializable id, Object[] currentState, Object[] previousState,
            String[] propertyNames, Type[] types) {

        if (entity instanceof Auditable) {
            updates++;
            for (int i = 0; i < propertyNames.length; i++) {
                if ("lastModified".equals(propertyNames[i])) {
                    currentState[i] = new Date();
                    return true;
                }
            }
        }
        return false;
    }

    public boolean onLoad(Object entity, Serializable id, Object[] state, String[] propertyNames, Type[] types) {
        if (entity instanceof Auditable) {
            loads++;
        }
        return false;
    }

    public boolean onSave(Object entity, Serializable id, Object[] state, String[] propertyNames, Type[] types) {
        boolean updated = false;
        if (entity instanceof Auditable) {
            creates++;
            for (int i = 0; i < propertyNames.length; i++) {
                if ("created".equals(propertyNames[i])) {
                    state[i] = new Date();
                    updated = true;
                } else if ("lastModified".equals(propertyNames[i])) {
                    state[i] = new Date();
                    updated = true;
                }
            }
        }
        return updated;
    }

    public void afterTransactionCompletion(Transaction tx) {
        if (tx.wasCommitted()) {
            System.out.println("Creations: " + creates + ", Updates: " + updates + "Loads: " + loads);
        }
        updates = 0;
        creates = 0;
        loads = 0;
    }

}