com.base4j.mybatis.sql.util.MybatisColumnsOGNL Maven / Gradle / Ivy
package com.base4j.mybatis.sql.util;
import com.base4j.mybatis.base.QueryParams;
import com.base4j.mybatis.config.datasource.ApplicationProperties;
import com.base4j.mybatis.sql.entity.EntityField;
import com.base4j.mybatis.sql.helper.FieldHelper;
import com.base4j.mybatis.tool.SpringContextHelper;
import com.base4j.mybatis.util.IdWorker;
import org.apache.ibatis.session.defaults.DefaultSqlSession;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.persistence.Id;
import java.beans.IntrospectionException;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.List;
/**
* OGNL静态方法
*
* Created by panlc on 2017-03-21.
*/
public abstract class MybatisColumnsOGNL {
private static Logger logger = LoggerFactory.getLogger(MybatisColumnsOGNL.class);
private static ApplicationProperties applicationProperties = SpringContextHelper.getBeanById("applicationProperties");
private static String idGenModel;
static {
idGenModel = applicationProperties.getIdGenModel();
}
/**
* 是否包含自定义查询列
*
* @param parameter
* @return
*/
public static boolean hasSelectColumns(Object parameter) {
if (parameter != null && parameter instanceof QueryParams) {
QueryParams Params = (QueryParams) parameter;
if (Params.getSelectColumns() != null && Params.getSelectColumns().size() > 0) {
return true;
}
}
return false;
}
/**
* 不包含自定义查询列
*
* @param parameter
* @return
*/
public static boolean hasNoSelectColumns(Object parameter) {
return !hasSelectColumns(parameter);
}
/**
* 判断参数的各字段是否有值
*
* @param record
* @return
* @throws IllegalAccessException
*/
public static boolean hasValue(Object record) throws IllegalAccessException {
boolean res = false;
if (record == null) {
throw new IllegalArgumentException("record can't be null!");
} else {
List all = FieldHelper.getAll(record.getClass());
for (EntityField entityField : all) {
Field field = entityField.getField();
if (field != null) {
field.setAccessible(true);
Object o = field.get(record);
if (o != null) {
res = true;
break;
}
}
}
}
if (!res) {
logger.error("All fields in the record(type:{}) are null! This is not allowed!", record.getClass());
throw new IllegalArgumentException("All fields in the record are null! This is not allowed!");
}
return res;
}
public static boolean idIsNull(Object parameter) throws IllegalAccessException, IntrospectionException, InvocationTargetException {
if ("seed".equals(idGenModel)) {
System.out.println(123123);
if (parameter == null) {
throw new IllegalArgumentException("record can't be null!");
} else {
setPkColumnsValue(parameter);
return false;
}
}
return true; //入库前未主动生成主键值
}
/**
* 设置id —— 当前不支持复合ID，即同一实体类中不能出现两个@ID注解的字段
*
* @param record 要操作的实体类
*/
private static void setPkColumnsValue(Object record) throws IntrospectionException, InvocationTargetException, IllegalAccessException {
Field[] declaredFields = record.getClass().getDeclaredFields();
for (Field field : declaredFields) {
if (field.isAnnotationPresent(Id.class)) {
if (!"java.lang.Long".equals(field.getType().getName())) {
throw new RuntimeException("当前只支持Lang类型的主键值");
}
PropertyDescriptor pd = new PropertyDescriptor(field.getName(), record.getClass());
Method readMethod = pd.getReadMethod();
if (readMethod.invoke(record) == null) { //ID未从外部设置值时，才自动生成ID
Method writeMethod = pd.getWriteMethod();
writeMethod.invoke(record, IdWorker.getId());//执行set方法设置id
}
break;
}
}
}
/**
* 为List批量增加主键
* @param parameter
* @throws IllegalAccessException
* @throws IntrospectionException
* @throws InvocationTargetException
*/
public static void initPkForList(Object parameter) throws IllegalAccessException, IntrospectionException, InvocationTargetException {
DefaultSqlSession.StrictMap map = (DefaultSqlSession.StrictMap) parameter;
List list = (List) map.get("list");
for (Object record : list) {
idIsNull(record);
}
}
}