[英]Saving object with Hibernate
我有3個表-Rasskazi(主表),CatsRelations(表Rasskazi和表CatsNames之間的關系)和CatsNames。
CREATE TABLE `rasskazi` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`rasskazName` varchar(777) DEFAULT NULL,
`rasskazText` text,
`rasskazDataDobav` datetime DEFAULT NULL,
`rasskazRazmer` float DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=11 DEFAULT CHARSET=utf8;
CREATE TABLE `catsRelations` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`rasskazId` int(11) DEFAULT NULL,
`catId` int(11) DEFAULT NULL,
PRIMARY KEY (`id`),
KEY `rasskazIdFK_idx` (`rasskazId`),
KEY `catIdFK_idx` (`catId`),
CONSTRAINT `z1` FOREIGN KEY (`rasskazId`) REFERENCES `rasskazi` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION,
CONSTRAINT `z2` FOREIGN KEY (`catId`) REFERENCES `catsNames` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
CREATE TABLE `catsNames` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`catName` varchar(777) DEFAULT NULL,
`oldId` varchar(100) DEFAULT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `oldId_UNIQUE` (`oldId`)
) ENGINE=InnoDB AUTO_INCREMENT=39 DEFAULT CHARSET=utf8;
休眠對象是:
Rasskazi.hbm.xml [http://pastebin.com/CF4D47M1][1]
Rasskazi.java [http://pastebin.com/29phnEEd][2]
CatsRelations.hbm.xml [http://pastebin.com/MqnXuAQ9][3]
CatsRelations.java [http://pastebin.com/BDqTKqeD][4]
CatsNames.hbm.xml [http://pastebin.com/9YtVkCjD][5]
CatsNames.java [http://pastebin.com/uwpWcLha][6]
所有文件打包為zip,可在此處下載
我嘗試通過代碼保存對象
Rasskazi r = new Rasskazi();
r.setRasskazName(storyName);
Set<CatsRelations> catsRelationses = new HashSet<>();
Elements katsInfo = doc.select("a[href*=ras.shtml?kat]");
for (Element kat : katsInfo) {
String katId = kat.attr("href");
CatsNames cat = mainBean.getCat(katId); // Here I got CatsNames from my bean, from table named CatsNames
CatsRelations catsRelations = new CatsRelations();
catsRelations.setCatsNames(cat);
catsRelations.setRasskazi(r);
catsRelationses.add(catsRelations);
}
r.setCatsRelationses(catsRelationses);
r.setRasskazText(textStr);
Session session = sessionFactory.getCurrentSession();
session.save(r);
但是Hibernate僅將記錄保存在名為rasskazi的表中:
Hibernate:
insert
into
grabberRasskazov.rasskazi
(rasskazName, rasskazText, rasskazDataDobav, rasskazRazmer)
values
(?, ?, ?, ?)
而且它不會將任何數據保存到名為CatsNames的表中。 為什么它不將數據保存到表CatsNames中,為什么它忽略了代碼
CatsRelations catsRelations = new CatsRelations();
catsRelations.setCatsNames(cat);
catsRelations.setRasskazi(r);
catsRelationses.add(catsRelations);
}
r.setCatsRelationses(catsRelationses);
?
問題是您沒有從父級到子級級聯:
<set name="children" inverse="true" cascade="all">
<key column="parent_id"/>
<one-to-many class="Child"/>
</set>
確保將級聯添加到所有一對多關聯中。
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