31 lines
1.0 KiB
Java
31 lines
1.0 KiB
Java
package org.springblade.seata.storage.service.impl;
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import com.baomidou.mybatisplus.core.toolkit.Wrappers;
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import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
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import org.springblade.seata.storage.entity.Storage;
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import org.springblade.seata.storage.mapper.StorageMapper;
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import org.springblade.seata.storage.service.IStorageService;
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import org.springframework.stereotype.Service;
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import org.springframework.transaction.annotation.Transactional;
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/**
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* StorageServiceImpl
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*
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* @author Chill
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*/
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@Service
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public class StorageServiceImpl extends ServiceImpl<StorageMapper, Storage> implements IStorageService {
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@Override
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@Transactional(rollbackFor = Exception.class)
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public int deduct(String commodityCode, int count) {
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Storage storage = baseMapper.selectOne(Wrappers.<Storage>query().lambda().eq(Storage::getCommodityCode, commodityCode));
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if (storage.getCount() < count) {
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throw new RuntimeException("超过库存数，扣除失败！");
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}
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storage.setCount(storage.getCount() - count);
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return baseMapper.updateById(storage);
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}
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}
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