com.px100systems.data.core.RawRecord.java Source code

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Here is the source code for com.px100systems.data.core.RawRecord.java

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/*
 * This file is part of Px100 Data.
 *
 * Px100 Data is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
    
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see http://www.gnu.org/licenses/
 */
package com.px100systems.data.core;

import java.util.Date;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import org.springframework.util.ObjectUtils;

/**
 * Serialized data record - used internally by persisters to load and serialize the entity.
 * 
 * @version 0.3 <br>Copyright (c) 2015 Px100 Systems. All Rights Reserved.<br>
 * @author Alex Rogachevsky
*/
public class RawRecord {
    private static final String JSON_DATE_FORMAT = "yyyy-MM-dd HH:mm:ss.SSS";

    private String unitName;
    private String idGeneratorName;
    private Long id;
    private Date lastUpdate;

    private Class<? extends Entity> entityClass;
    private String serializedEntity;

    public static Gson createGson() {
        return new GsonBuilder().setDateFormat(JSON_DATE_FORMAT).setPrettyPrinting().create();
    }

    public RawRecord() {
    }

    public RawRecord(String unitName, Long id) {
        super();
        this.unitName = unitName;
        this.id = id;
    }

    public RawRecord(Entity entity, Gson gson) {
        id = entity.getId();
        unitName = entity.unitName();
        idGeneratorName = entity.idGeneratorName();
        lastUpdate = entity.getModifiedAt();
        entityClass = entity.getClass();
        serializedEntity = gson.toJson(entity);
    }

    @SuppressWarnings("unchecked")
    public <T extends Entity> T toEntity(Gson gson) {
        return serializedEntity == null || serializedEntity.isEmpty() ? null
                : (T) gson.fromJson(serializedEntity, entityClass);
    }

    @Override
    public int hashCode() {
        return (unitName + id).hashCode();
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == null || !(obj instanceof RawRecord))
            return false;

        RawRecord o = (RawRecord) obj;

        String data1 = serializedEntity == null ? "" : serializedEntity;
        String data2 = o.serializedEntity == null ? "" : o.serializedEntity;
        if (!data1.equals(data2))
            return false;

        return ObjectUtils.nullSafeEquals(unitName, o.unitName) && ObjectUtils.nullSafeEquals(id, o.id)
                && ObjectUtils.nullSafeEquals(lastUpdate, o.lastUpdate);
    }

    public String getUnitName() {
        return unitName;
    }

    public void setUnitName(String unitName) {
        this.unitName = unitName;
    }

    public String getIdGeneratorName() {
        return idGeneratorName;
    }

    public void setIdGeneratorName(String idGeneratorName) {
        this.idGeneratorName = idGeneratorName;
    }

    public String getSerializedEntity() {
        return serializedEntity;
    }

    public void setSerializedEntity(String serializedEntity) {
        this.serializedEntity = serializedEntity;
    }

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public Date getLastUpdate() {
        return lastUpdate;
    }

    @SuppressWarnings("unused")
    public void setLastUpdate(Date lastUpdate) {
        this.lastUpdate = lastUpdate;
    }

    public Class<? extends Entity> getEntityClass() {
        return entityClass;
    }

    @SuppressWarnings("unused")
    public void setEntityClass(Class<? extends Entity> entityClass) {
        this.entityClass = entityClass;
    }
}