簡(jiǎn)談hibernate 簡(jiǎn)化繼承映射 外文翻譯

《簡(jiǎn)談hibernate 簡(jiǎn)化繼承映射 外文翻譯》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在工程資料-天天文庫。

1、簡(jiǎn)談Hibernate簡(jiǎn)化繼承映射外文翻譯簡(jiǎn)談Hibernate簡(jiǎn)化繼承映射外文翻譯導(dǎo)讀：Hibernate簡(jiǎn)化繼承映射外文翻譯ureJavaobject-relationalmappingandpersistenceframeapplainoldJavaobjectstorelationaldatabasetablesusingXMLconfigurationfiles.UsingHibernatecansavealotofdevelopmenttimeonaproject,sincetheanagedbytheframeeans內(nèi)蒙

2、古工業(yè)大學(xué)本科畢業(yè)設(shè)計(jì)外文文獻(xiàn)翻譯HibernatesimplifiesinheritancemappingHibernateisanobject-relationalmappingandpersistenceframeintrospectiontopolymorphismandinheritancemapping.Butmappingclasshierarchiestoarelationaldatabasemodelmightprovesomemingtoeasilymapplexobjectmodelstorelationaldat

3、abasemodels.OvervieappingandpersistenceframeapplainoldJavaobjectstorelationaldatabasetablesusingXMLconfigurationfiles.UsingHibernatecansavealotofdevelopmenttimeonaproject,sincetheanagedbytheframeeansthatyourapplication'sdataaccesslayeroftheunderlyingdatamodel.Hibernateha

4、sanumberofadvantagesoverothersimilarobject-relationalmappingapproaches(JDO,entitybeans,in-housedevelopment,andsoon):it'sfreeandopensource,ithasachievedagoodlevelofmaturity,it'sunit345678簡(jiǎn)談Hibernate簡(jiǎn)化繼承映射外文翻譯導(dǎo)讀：Hibernate簡(jiǎn)化繼承映射外文翻譯ebsite.CopythenecessaryHibernatelibraries(

5、JARfiles)toyourapplication'sCLASSPATH.2.CreatetheXMLconfigurationfilesthatapyourJavaobjectstoyourdatabasetables.(Lconfigurationfilestoyourapplicatioyforum.TointegrateHibernateintoanexistingJavaproject,you'llneedtoetheHibernateLconfigurationfilesthatapyourJavaobjectstoyou

6、rdatabasetables.(Lconfigurationfilestoyourapplication'sCLASSPATH.You'llnoticethatyoudon'thavetomodifyanyJavaobjectstosupporttheframeagine,forinstance,thatyouneededtosomehoingacolumn,forexample.Onceyou'dchangedthetable,allyou'dhavetodotoupdateyourJavaapplicationilarSQL.Fo

7、rthoseofyou.Butours345678簡(jiǎn)談Hibernate簡(jiǎn)化繼承映射外文翻譯導(dǎo)讀：Hibernate簡(jiǎn)化繼承映射外文翻譯HQLdiffersfromSQLinthatyoudon'todel(thatis,onyourtables,columns,etc.),butratheronyouJavaobjects,usingtheirpropertiesandrelationships.Listing1illustratesabasicexample.ThisHQLcoderetrievesallIndividualseis

8、;Johupportingexamplepletouse.YouiliarkeySQL,likeSELECT,FROM,andLconfigurationfilesThecoreofHibernate'sf