entitymodelbeanvalidator.java

基于eclipse的工具开发代码

package com.cownew.studio.modelDev.codeGen;

import java.util.List;

import com.cownew.studio.modelDev.common.CommonUtils;
import com.cownew.studio.modelDev.common.EntityFieldModelBean;
import com.cownew.studio.modelDev.common.EntityModelBean;
import com.cownew.studio.modelDev.common.ModeValidateException;
import com.cownew.studio.modelDev.common.enumdef.LinkTypeEnum;

public class EntityModelBeanValidator
{
	public static void validate(EntityModelBean bean)
			throws ModeValidateException
	{
		if (CommonUtils.isEmptyString(bean.getName()))
		{
			// 实体名不能为空
			throw new ModeValidateException(bean, "Name cannot be null!");
		}

		if (CommonUtils.isEmptyString(bean.getPackageName()))
		{
			// 实体的包名不能为空
			throw new ModeValidateException(bean, "PackageName cannot be null!");
		}

		if (bean.getFieldList() == null || bean.getFieldList().size() < 1)
		{
			// 必须定义字段
			throw new ModeValidateException(bean, "No Fields defination!");
		}
		if (CommonUtils.isEmptyString(bean.getDbTableName()))
		{
			// 数据库表名不能为空
			throw new ModeValidateException(bean, "DbTableName cannot be null!");
		}
		if (CommonUtils.isEmptyString(bean.getPrimaryKey()))
		{
			// 主键字段不能为空
			throw new ModeValidateException(bean, "PrimaryKey cannot be null!");
		}

		List<EntityFieldModelBean> fieldList = bean.getFieldList();
		for (int i = 0, n = fieldList.size(); i < n; i++)
		{
			// 校验每个字段
			validate(bean, fieldList.get(i));
		}
	}

	private static void validate(EntityModelBean bean,
			EntityFieldModelBean fieldBean) throws ModeValidateException
	{

		if (CommonUtils.isEmptyString(fieldBean.getName()))
		{
			// 字段名不能为空
			throw new ModeValidateException(bean, "FieldName cannot be null!");
		}

		if (fieldBean.isLinkProperty() == false
				&& CommonUtils.isEmptyString(fieldBean.getDbFieldName()))
		{
			// 如果字段不是关联实体字段的话那么表字段不能为空
			throw new ModeValidateException(bean, "DbFieldName of "
					+ fieldBean.getName() + " cannot be null!");
		}
		if (fieldBean.getDataype() == null)
		{
			// 字段类型不能为空
			throw new ModeValidateException(bean, "Dataype of "
					+ fieldBean.getName() + " cannot be null!");
		}
		// 如果是关联实体字段则进行关联字段相关的校验
		if (fieldBean.isLinkProperty())
		{
			if (CommonUtils.isEmptyString(fieldBean.getLinkEntity()))
			{
				// 关联实体不能为空
				throw new ModeValidateException(bean,
						"LinkEntity cannot be null!");
			}
			if (fieldBean.getLinkType() == null)
			{
				// 关联类型不能为空
				throw new ModeValidateException(bean,
						"LinkType cannot be null!");
			}
			if (fieldBean.getLinkType() != LinkTypeEnum.ONETOMANY
					&& CommonUtils.isEmptyString(fieldBean.getDbFieldName()))
			{
				// 如果关联类型不等于ONETOMANY的话，则对应的表字段不能为空
				throw new ModeValidateException(bean, "DbFieldName of "
						+ fieldBean.getName() + " cannot be null!");
			}
		}

	}
}