Android下Entity封装工具类

翻出大半年前写的代码，还是可以揪出点东西、收获良多，比如entiy和协议，数据库的绑定

总结一下
在android下面实现的数据entity的封装。


         通过对bean进行配置注解，网络交互，数据库的CRUD操作都只要调用统一接口，具体实现都在BaseEntity父类，以下代码是在发送数据组装的具体实现

@AnoDBType(tableName = "e")

public class ReportShow extends BaseEntity {

   @AnoDbField(columnName = "a", isPrymaryKey = true)

   private int id;

   @AnoDbField(columnName = "b")

   @AnoNetField(netName = "time")

   private String time;

   @AnoDbField(columnName = "c")

   @AnoNetField(netName = "position")

BaseEntity类的实现：

public class BaseEntity {

    public String createXml() {

        StringBuilder builder = new StringBuilder();

        Field[] declaredFields = this.getClass().getDeclaredFields();

        try {

            for (Field field : declaredFields) {

                field.setAccessible(true);

                AnoNetField annotation = field.getAnnotation(AnoNetField.class);

                if (annotation != null) {

                   String netName = annotation.netName();

                   builder.append("<").append(netName).append(">");

                   Object object = field.get(this);

                   if (object != null) {

                       builder.append(object);

                   }

                   builder.append("</").append(netName).append(">");

                }

            }

        } catch (IllegalArgumentException e) {

            e.printStackTrace();

        } catch (IllegalAccessException e) {

            e.printStackTrace();

        }

        return builder.toString();

以下代码是实现解析网络数据的具体实现，resultFilePath 参数是本地xml的地址，因为收到数据包之后，为了分析每一条协议，我把他持久化保存在本地磁盘上面。 解析成entity时候通过注解设置相应的值，并通过递归的方式寻找每一个子项，子项的子项。。并给他们设置值。最终转成entity对象。

public BaseEntity parseXml(String resultFilePath) {

         PlusXmlParser xmlParser = new PlusXmlParser(resultFilePath);

         XmlBean xmlBean = xmlParser.getRootXmlBean();

         return buildEntity(xmlBean);

    }

    public BaseEntity buildEntity(XmlBean mainBean) {

         Field[] declaredFields = this.getClass().getDeclaredFields();

         try {

             for (Field field : declaredFields) {

                  field.setAccessible(true);

                  AnoNetField annotation = field.getAnnotation(AnoNetField.class);

                  if (annotation != null && annotation.netName().length() > 0) {

                      String netName = annotation.netName();

                      Set<Entry<Integer, XmlBean>> entrySet = mainBean

                               .getChildren().entrySet();

                      if (annotation.isChildEntity()) {

                          List<BaseEntity> list = new ArrayList<BaseEntity>();

                          for (Entry<Integer, XmlBean> entry : entrySet) {

                               XmlBean value = entry.getValue();

                               if (value.getName().equals(netName)) {

                                   Class<? extends BaseEntity> childClass = annotation

                                            .childClass();

                                   BaseEntity newInstance = childClass

                                            .newInstance();

                                   BaseEntity buildEntity = newInstance

                                            .buildEntity(value);

                                   list.add(buildEntity);

                               }

                          }

                          field.set(this, list);

                      } else {

                          for (Entry<Integer, XmlBean> entry : entrySet) {

                               XmlBean value = entry.getValue();

                               if (netName.equals(value.getName())) {

                                   field.set(this, value.getContent());

                               }

                          }

                      }

                  } else {

                      /** 这里是没有配置注解的属性 */

                  }

             }

         } catch (InstantiationException e) {

             e.printStackTrace();

         } catch (IllegalAccessException e) {

             e.printStackTrace();

 

         }

         return this;

    }

以下是数据库CUID的接口实现，具体代码比较多就不贴上来。因为都是持久化数据，所以这个解析和组装的实现是和网络模块一致的。

public boolean update(BaseEntity entity, BaseEntity alterEntity,String condition) {}

 

public boolean delete(BaseEntity entity) {}

 

public boolean insert(BaseEntity baseEntity) {}

 

public <T> LinkedList<T> query(BaseEntity baseEntity, Class<T> entityClass,



         String condition) {}