设计模式之静态工厂的使用

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静态工厂类

package com.pbh.filter;import com.alibaba.fastjson.serializer.PropertyFilter;/** *  * Description: 过滤序列化属性静态工厂类 * @author PanBaihui * @time 2017年9月19日 下午2:14:36 */public class PropertyFilterFactory {    /**     *      * @Description：懒加载对象过滤     * @author PanBaihui     * @time 2017年9月19日 下午5:47:44     * @return PropertyFilter     */    public static PropertyFilter SimplePropertyFilter() {        return new SimplePropertyFilter();    }    /**     *      * @Description：代理对象过滤     * @author PanBaihui     * @time 2017年9月19日 下午2:20:06     * @return PropertyFilter     */    public static PropertyFilter CarSubBrandSimplePropertyFilter() {        return new CarSubBrandSimplePropertyFilter();    }    /**     *      * @Description：车型过滤     * @author PanBaihui     * @time 2017年9月19日 下午2:19:50     * @return PropertyFilter     */    public static PropertyFilter CarTypeSimplePropertyFilter() {        return new CarTypeSimplePropertyFilter();    }}

接口实现类

package com.pbh.filter;import org.hibernate.collection.spi.PersistentCollection;import org.hibernate.proxy.HibernateProxy;import org.hibernate.proxy.LazyInitializer;import com.alibaba.fastjson.serializer.PropertyFilter;/** *  * Description: 序列化时忽略代理的懒加载对象 * @author PanBaihui * @time 2017年9月15日 下午4:15:45 */public class SimplePropertyFilter implements PropertyFilter {    @Override    public boolean apply(Object object, String name, Object value) {        if (value instanceof HibernateProxy) {//hibernate代理对象              LazyInitializer initializer = ((HibernateProxy) value).getHibernateLazyInitializer();              if (initializer.isUninitialized()) {                  return false;              }          } else if (value instanceof PersistentCollection) {//实体关联集合一对多等              PersistentCollection collection = (PersistentCollection) value;              if (!collection.wasInitialized()) {                  return false;              }              Object val = collection.getValue();              if (val == null) {                  return false;              }          }          return true;    }}

package com.pbh.filter;import org.hibernate.collection.spi.PersistentCollection;import org.hibernate.proxy.HibernateProxy;import org.hibernate.proxy.LazyInitializer;import com.alibaba.fastjson.serializer.PropertyFilter;import com.lianshangche.model.car.CarSeries;import com.lianshangche.model.car.CarSubBrand;/** *  * Description: 过滤Hibernate懒加载不能序列化对象 * @author PanBaihui * @time 2017年9月15日 下午4:15:45 */public class CarSubBrandSimplePropertyFilter implements PropertyFilter {    private Class<CarSubBrand> className = CarSubBrand.class;    private Class<CarSeries> carSeriesClassName = CarSeries.class;    private String [] propertieNames = {"remark", "enable"};    @Override    public boolean apply(Object object, String name, Object value) {        if (value instanceof HibernateProxy) {//hibernate代理对象              LazyInitializer initializer = ((HibernateProxy) value).getHibernateLazyInitializer();              if (initializer.isUninitialized()) {                  return false;              }          } else if (value instanceof PersistentCollection) {//实体关联集合一对多等              PersistentCollection collection = (PersistentCollection) value;              if (!collection.wasInitialized()) {                  return false;              }              Object val = collection.getValue();              if (val == null) {                  return false;              }          }        if (object.getClass().equals(className)||object.getClass().equals(carSeriesClassName)) {//非序列化判断            for (String propertie : propertieNames) {                if (name.equals(propertie)) {                    return false;                }            }        }        return true;    }}

package com.pbh.filter;import org.hibernate.collection.spi.PersistentCollection;import org.hibernate.proxy.HibernateProxy;import org.hibernate.proxy.LazyInitializer;import com.alibaba.fastjson.serializer.PropertyFilter;import com.lianshangche.model.car.CarType;/** *  * Description: 过滤Hibernate懒加载不能序列化对象 * @author PanBaihui * @time 2017年9月15日 下午4:15:45 */public class CarTypeSimplePropertyFilter implements PropertyFilter {    private Class<CarType> className = CarType.class;    private String [] propertieNames = {"yearType", "sizeType", "saleState", "enable", "price"};    @Override    public boolean apply(Object object, String name, Object value) {        if (value instanceof HibernateProxy) {//hibernate代理对象              LazyInitializer initializer = ((HibernateProxy) value).getHibernateLazyInitializer();              if (initializer.isUninitialized()) {                  return false;              }          } else if (value instanceof PersistentCollection) {//实体关联集合一对多等              PersistentCollection collection = (PersistentCollection) value;              if (!collection.wasInitialized()) {                  return false;              }              Object val = collection.getValue();              if (val == null) {                  return false;              }          }        if (object.getClass().equals(className)) {//非序列化判断            for (String propertie : propertieNames) {                if (name.equals(propertie)) {                    return false;                }            }        }        return true;    }}

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