Hibernate Tutorial Step by Step

8/14/2019 Hibernate Tutorial Step by Step

1/61

Hibernate Tutorial Step by Step -- Code

Examples

by Satya Das

Other Hibernate Examples with Code


Advantage of Hibernate over J!C

Advantage of Hibernate over JDBC.

Hibernate Setup with an web Appli"ation

Hibernate Setp with an web Appli!ation

#irst Hibernate Appli"ationSimple program to insert re!ord into database and fet!h the re!ords

Hibernate mapping with atabase TA!$E

Hibernate mapping with Database "AB#E.Here is the Example. Hibernate ata Type-Java ata Type - S%$ ata Type mapping

"his ttorial mapped the Hibernate Data "ype$Java Data "ype $ S%# Data "ype mapping.

One to &any 'elation in Hibernate- (nidire"tional

One to &any 'elation in Hibernate with Example.

One to &any 'elation in Hibernate - !idire"tionalOne to &any 'elation in Hibernate Bidire!tional with Example.

&any to &any 'elation in Hibernate

&any to &any 'elation in Hibernate .

H%$) The Hibernate %uery $anguage )from "lause*Asso"iations and +oins* Aggregate

fun"tions*The order by "lause*The group by "lause*Sub,ueries

"his ttorial in!ldes from !lase(Asso!iations and )oins( Aggregate fn!tions("he order by

!lase("he grop by !lase(Sb*eries. Criteria %ueries

Criteria %eries Criteria %ueries ) E,ual .e,/* 0ot E,ual.ne/* $ess than .le/* greater than .gt/*greater

than or e,ual.ge/ and Ordering the results .order by/

E*al +e*,( -ot E*al+ne,( #ess than +le,( greater than +gt,(greater than or e*al+ge, and Ordering
http://www.techfaq360.com/tutorial.jsp?catId=7http://www.techfaq360.com/tutorial/hibernate_jdbc.jsphttp://www.techfaq360.com/tutorial/hibernate_setup.jsphttp://www.techfaq360.com/tutorial/firstHibernateApplication.jsphttp://www.techfaq360.com/tutorial/hibernatemapping.jsphttp://www.techfaq360.com/tutorial/hibernate_data_type.jsphttp://www.techfaq360.com/tutorial/one_to_many.jsphttp://www.techfaq360.com/tutorial/one_to_many_bi_directional.jsphttp://www.techfaq360.com/tutorial/many_to_many.jsphttp://www.techfaq360.com/tutorial/hql.jsphttp://www.techfaq360.com/tutorial/hql.jsphttp://www.techfaq360.com/tutorial/criteria.jsphttp://www.techfaq360.com/tutorial/criteriaquries.jsphttp://www.techfaq360.com/tutorial/criteriaquries.jsphttp://www.techfaq360.com/tutorial/hibernate_jdbc.jsphttp://www.techfaq360.com/tutorial/hibernate_setup.jsphttp://www.techfaq360.com/tutorial/firstHibernateApplication.jsphttp://www.techfaq360.com/tutorial/hibernatemapping.jsphttp://www.techfaq360.com/tutorial/hibernate_data_type.jsphttp://www.techfaq360.com/tutorial/one_to_many.jsphttp://www.techfaq360.com/tutorial/one_to_many_bi_directional.jsphttp://www.techfaq360.com/tutorial/many_to_many.jsphttp://www.techfaq360.com/tutorial/hql.jsphttp://www.techfaq360.com/tutorial/hql.jsphttp://www.techfaq360.com/tutorial/criteria.jsphttp://www.techfaq360.com/tutorial/criteriaquries.jsphttp://www.techfaq360.com/tutorial/criteriaquries.jsphttp://www.techfaq360.com/tutorial.jsp?catId=7


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the reslts +order by,

Criteria %ueries) And O' "onditions

"his se!tion will how the example of Criteria %eries And O' !onditions

Hibernate 1generator2 to generate id .primary 3ey/ in"rementallySample program to show how Hibernate /generator0 to generate id +primary 1ey, in!rementally.

(ser Thin3 Time 4ssue ) prevent "on"urrent update in Hibernate

prevent !on!rrent pdate in Hibernate .

How to perevent slate ob+e"t updatation in Hibernate 5

2erevent slate ob)e!t pdatation in Hibernate 3 6hat is version "he"3ing in Hibernate 5

4ersion !he!1ing in Hibernate

Struts Spring Hibernate 4ntegration 6eb Appli"ation using Tom"at"his ttorial gide yo how yo !an integrate Strts Spring Hibernate in a 5eb Appli!ation."his is simple appli!ation where ser form +67, as Strts and Servi!e as Spring and DAO is

Hibernate. 6ser Details in the 6ser 8orm and save the details into DataBase.


http://www.techfaq360.com/tutorial/criteriaquriesandor.jsphttp://www.techfaq360.com/tutorial/generatorkexample.jsphttp://www.techfaq360.com/tutorial/versioncheck.jsphttp://www.techfaq360.com/tutorial/versioncheck.jsphttp://www.techfaq360.com/tutorial/versioncheck.jsphttp://www.techfaq360.com/tutorial/spring/struts_spring_hibernate.jsphttp://www.techfaq360.com/tutorial.jsp?catId=7http://www.techfaq360.com/tutorial/criteriaquriesandor.jsphttp://www.techfaq360.com/tutorial/generatorkexample.jsphttp://www.techfaq360.com/tutorial/versioncheck.jsphttp://www.techfaq360.com/tutorial/versioncheck.jsphttp://www.techfaq360.com/tutorial/versioncheck.jsphttp://www.techfaq360.com/tutorial/spring/struts_spring_hibernate.jsphttp://www.techfaq360.com/tutorial.jsp?catId=7


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Hibernate Tutorial Step by Step -- Code Examples

Advantage of Hibernate over JDBC

Advantage are9, Hibernate is data base independent( same !ode will wor1 for all data bases li1e

O'AC#E(&yS%# (S%#Server et!.7n !ase of JDBC *ery mst be data base spe!ifi!.

:, As Hibernate is set of Ob)e!ts ( yo don;t need to learn S%# langage.


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testApp

|

----src // Java Source Code folder

|

-------------beans //Source Code folder

|----------------Offer.java //Source Code

-------------servlet //Source Code folder

|

----------------DBStartUpServlet.java //Source Code

-------------dao //Source Code folder

|

----------------HibernateUtil.java //Source Code

----confi // confi folder !"ere all t"e confiuration files present

|

-------------"ibernate.cf.#$l //Hibernate Confi file-------------Offer."b$.#$l// "ibernate $appin !it" Offer %AB&'

-------------lo(j.properties// lo(j settin

----)'B-*+, //!it"in folder

|

---------!eb.#$l //file

---------classes //folder

---------lib //!it"in folder

|

-------------"ibernate.jar //jar file

-------------antlr-..0rc1.jar //jar file

-------------as$.jar //jar file

-------------as$-attrs.jar //jar file

-------------cp2-2.3.2.jar //jar file for connection pool

-------------classes1.jar //if 4ou use O5AC&' DA%ABAS' jar file

-------------$4s6l-connector-java-7.2.(-bin.jar //if 4ou use 84S9& DA%ABAS' jar file

-------------co$$ons-loin.jar //jar file

-------------co$$ons-validator.jar //jar file

-------------do$(j-1.0.1.jar //jar file

-------------jta.jar //jar file

-------------lo(j-1..11.jar //jar file

-------------nls:c"arset1.jar //jar file

Step 8 Add !Start(pServlet Entry into the webxml file

"his servlet is only for load !onfigration files related to Hibernate and !reate Session 8a!tory

on start p .

Create Session #a"tory is very Expensive


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Create Session 8a!tory is very Expensive so we added one servlet to !reate on server startp

4nitiali9e Conne"tion pool on startup

7nitialie Conne!tion pool on startp sing !=p.

4nitiali9e log:+ "onfiguration

7nitialie log>) !onfigration on startp.

;1.2> encodin=>*SO-??73-1>

>"ttpE//java.sun.co$/dtd/!eb-app::.dtd>@

;!eb-app@

;displa4-na$e@Hibernate;/displa4-na$e@

;description@

Hibernate Setup ;/description@

;servlet@

;servlet-na$e@

DBStartUpServlet

;/servlet-na$e@

;servlet-class@

servlet.DBStartUpServlet

;/servlet-class@

;load-on-startup@1;/load-on-startup@

;/servlet@

;/!eb-app@

Step ; !Start(pServlet Code

package servlet;

public class DBStartUpServlet extends HttpServlet {

/** Initialising the Logger */

protected static inal Logger

logger!Logger"getLogger#DBStartUpServlet"class$;

public void init#Servlet%onig conig$ thro&s Servlet'xception {

S(ste)"out"println#+n**** Initiali,ing Hibernate Init Servlet

********** +n$;

super"init#conig$;

//-his is or local properties"

String cgDir ! D.++testpp++conig;

logger"ino#conig dir.0cgDir$;

initLog1ro#cgDir$;

tr({

HibernateUtil"appHo)e ! cgDir;

HibernateUtil"init2onitor#$;
http://java.sun.com/dtd/web-app_2_3.dtdhttp://java.sun.com/dtd/web-app_2_3.dtd


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3catch#'xception e${

e"printStack-race#$;

3

3

/** Handles the re4uests ro) http client"

* 5para) re4uest servlet re4uest

* 5para) response servlet response

*/

protected void service#HttpServlet6e4uest re4uest7HttpServlet6esponse

response$

thro&s Servlet'xception7 8ava"io"I9'xception {

3

private void initLog1ro#String path${tr({

1ropert(%onigurator"conigure#path0:ile"separator%har0log8"properties$;

3catch#'xception ex${

S(ste)"out"println#Log< can not be initiali,ed$;

logger"ino#Log< can not be initiali,ed$;

3

3

3

Step : Hibernate(til+ava "ode

package dao;

public class HibernateUtil {

public static String appHo)e ! =o;

private static Session:actor( session:actor(;

private static inal -hreadLocal threadSession ! ne&

-hreadLocal#$;

private static inal -hreadLocal thread-ransaction ! ne&-hreadLocal#$;

// %reate the initial Session:actor( ro) the deault

coniguration iles

public static void conigure#${

tr( {

String path>properties !


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appHo)e0:ile"separator%har0hibernate"cg"x)l;

%oniguration coniguration ! ne& %oniguration#$;

coniguration"add:ile#path>properties$;

session:actor(

!coniguration"conigure#$"buildSession:actor(#$;

3 catch #-hro&able ex$ {

thro& ne& 'xceptionInInitiali,er'rror#ex$;

3

3

public static Session:actor( getSession:actor(#$ {

i#session:actor(!!null$ conigure#$;

return session:actor(;

3

public static Session getSession#${

Session s ! #Session$ threadSession"get#$;// logger"debug#session0s$;

i #s !! null$ {

s ! getSession:actor(#$"openSession#$;

threadSession"set#s$;

// logger"debug#session ? @0s$;

3

return s;

3

3

Step -//Hibernate/Hibernate Confiuration D%D .2//'+>

>"ttpE//"ibernate.sourcefore.net/"ibernate-confiuration-.2.dtd>@

;"ibernate-confiuration@

;session-factor4@

;-- Database connection settins --@

;propert4

na$e=>connection.driver:class>@co$.$4s6l.jdbc.Driver;/propert4@

;propert4

na$e=>connection.url>@jdbcE$4s6lE//local"ostE20/tec"fa6db;/propert4

@

;propert4 na$e=>connection.userna$e>@tec"fa6;/propert4@

;propert4 na$e=>connection.pass!ord>@tec"fa6;/propert4@
http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtdhttp://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd


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;-- JDBC connection pool use t"e built-inI --@

;propert4 na$e=>"ibernate.cp2.$in:sie>@1;/propert4@

;propert4 na$e=>"ibernate.cp2.$a#:sie>@(;/propert4@

;propert4 na$e=>"ibernate.cp2.ti$eout>@1?22;/propert4@

;propert4 na$e=>"ibernate.cp2.$a#:state$ents>@72;/propert4@

;-- 84S9& dialect//different for different Database --@;propert4

na$e=>dialect>@or."ibernate.dialect.84S9&Dialect;/propert4@

;-- 'nable HibernateFs auto$atic session conte#t $anae$ent --@

;propert4 na$e=>current:session:conte#t:class>@t"read;/propert4@

;-- Disable t"e second-level cac"e --@

;propert4

na$e=>cac"e.provider:class>@or."ibernate.cac"e.+oCac"erovider;/pro

pert4@

;-- 'c"o all e#ecuted S9& to stdout --@

;propert4 na$e=>s"o!:s6l>@true;/propert4@;propert4 na$e=>"b$ddl.auto>@update;/propert4@

;$appin resource=>Offer."b$.#$l>/@

;/session-factor4@

;/"ibernate-confiuration@

Step = Offer+ava bean "lass.within beans folder/

package beans;

public class 9er {

private long oerId;private String oer=a)e;

/**

* 5return 6eturns the oerId"

*/ public long get9erId#$ {

return oerId;

3

/**

* 5para) oerId -he oerId to set"

*/

private void set9erId#long oerId$ {

this"oerId ! oerId;

3

/** * 5return 6eturns the oer=a)e"

*/

public String get9er=a)e#$ {

return oer=a)e;

3

/**

* 5para) oer=a)e -he oer=a)e to set"


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*/

public void set9er=a)e#String oer=a)e$ {

this"oer=a)e ! oer=a)e;

3

3

Step > Offer+ava and O##E' TA!$E mapping in Offerhbmxml

;1.2>

>"ttpE//"ibernate.sourcefore.net/"ibernate-$appin-.2.dtd>@

;"ibernate-$appin@

;class na$e=>beans.Offer> table=>O,,'5>@

;id na$e=>offer*d> colu$n=>offer:id> t4pe=>lon>@

;enerator class=>incre$ent>/@ // %"is enerates t"e pri$ar4

Ke4

;/id@

;propert4 na$e=>offer+a$e> colu$n=>offer:na$e>/@

;/class@

;/"ibernate-$appin@

Step ? O##E' TA!$E in your database

create table O,,'5 offer:id nu$berG offer:na$e varc"ar IG

"hen start the server.


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na$e varc"ar

IG

// ,O5 O5AC&'

create table '8&O''

id nu$berG

na$e varc"arIG

Step 8 Create Emp+ava bean "lass

Hibernate ses the 2lain Old Java Ob)e!ts +2OJOs, !lasses to map to the database table

+Emp.)ava to E&2#O-//Hibernate/Hibernate 8appin D%D .2//'+>>"ttpE//"ibernate.sourcefore.net/"ibernate-$appin-.2.dtd>@

;"ibernate-$appin@

;class na$e=>'$p> table=>'8&O''>@

;id na$e=>id> colu$n=>id> t4pe=>lon>@


Ke4
http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtdhttp://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd


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;/id@

;propert4 na$e=>na$e> colu$n=>na$e>/@

;/class@

;/"ibernate-$appin@

Step : add Emphbmxml into hibernate"fgxml

Hibernate provided !onne!tion pooling sning !=p and transa!tion management . Hibernate

ses the hibernate.!fg.xml to !reate the !onne!tion pool and setp re*ired environment

;



;session-factor4@


;propert4


;propert4


@




;propert4 na$e=>"ibernate.cp2.$in:sie>@1;/propert4@;propert4 na$e=>"ibernate.cp2.$a#:sie>@(;/propert4@



;-- 84S9& dialect//different for different Database --@

;propert4





;propert4na$e=>cac"e.provider:class>@or."ibernate.cac"e.+oCac"erovider;/pro

pert4@


;propert4 na$e=>s"o!:s6l>@true;/propert4@

;propert4 na$e=>"b$ddl.auto>@update;/propert4@

;$appin resource=>'$p."b$.#$l>/@

;/session-factor4@


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Step


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Hibernate mapping wit Database TAB#E

8ollow the steps to mapp with Database "AB#E.

Step 7 "reate a table name O##E' in your database

create table O,,'5 offer:id nu$berG offer:na$e varc"ar IG

Step 8 Create Offer+ava bean "lass

package beans;

public class 9er {

private long oerId;

private String oer=a)e;

/**

* 5return 6eturns the oerId"

*/ public long get9erId#$ {

return oerId;

3

/**

* 5para) oerId -he oerId to set"

*/

private void set9erId#long oerId$ {

this"oerId ! oerId;

3

/** * 5return 6eturns the oer=a)e"

*/

public String get9er=a)e#$ {

return oer=a)e;

3

/**

* 5para) oer=a)e -he oer=a)e to set"

*/

public void set9er=a)e#String oer=a)e$ {

this"oer=a)e ! oer=a)e;

3

3

Step ; Offerhbmxml - This mapps O##E' TA!$E and Offer+ava

;1.2>


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>-//Hibernate/Hibernate 8appin D%D .2//'+>


;"ibernate-$appin@

;class na$e=>beans.Offer> table=>O,,'5>@

;id na$e=>offer*d> colu$n=>offer:id> t4pe=>lon>@

;enerator class=>incre$ent>/@ // %"is enerates t"e pri$ar4Ke4

;/id@

;propert4 na$e=>offer+a$e> colu$n=>offer:na$e>/@

;/class@

;/"ibernate-$appin@

Step : add Offerhbmxml into hibernate"fgxml

;



;session-factor4@


;propert4


;propert4


@;propert4 na$e=>connection.userna$e>@tec"fa6;/propert4@








;propert4

na$e=>dialect>@or."ibernate.dialect.84S9&Dialect;/propert4@;-- 'nable HibernateFs auto$atic session conte#t $anae$ent --@



;propert4


pert4@
http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtdhttp://hibernate.sourceforge.net/hibernate-configuration-3.0.dtdhttp://hibernate.sourceforge.net/hibernate-mapping-3.0.dtdhttp://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd


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;$appin resource=>Offer."b$.#$l>/@

;/session-factor4@



Hibernate Data Type-Java Data Type - S$# Data Type mapping

deci)al =U2'6I%7 =U2B'

6

loat7 double loat7 double loat7 double

8ava"lang"Boolean7boolean boolean boolean7 int

8ava"lang"string string varchar7 varch

arC

Ger( long strings text %L9B7 -'-

8ava"util"Date date7 ti)e7 ti)esta)p D-'7 -I2'7 -I

2'S-21

8ava"util"%alendar calendar7 calendar>date -I2'S-217 D-

'

8ava"util"Locale locale varchar7varcha

rC

8ava"util"-i)eone ti)e,one varchar7 varch


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arC

8ava"util %urrenc( %urrenc( varchar7 varch

arC

8ava"s4l"%lob clob %L9B

8ava"s4l"Blob blob BL9B

@

;"ibernate-$appin@


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;class na$e=>)riter> table=>)5*%'5>@

;id na$e=>id> colu$n=>*D> t4pe=>int> unsaved-value=>2>@

;enerator class=>incre$ent>/@

;/id@

;list na$e=>stories> cascade=>all>@

;Ke4 colu$n=>parent:id>/@;one-to-$an4 class=>Stor4>/@

;/list@

;propert4 na$e=>na$e> colu$n=>+A8'> t4pe=>strin>/@

;/class@

;/"ibernate-$appin@

Step ; &apping storyhbmxml- 6hi"h maps to STO' TA!$E

;1.2>


;"ibernate-$appin@

;class na$e=>Stor4> table=>stor4>@



;/id@

;propert4 na$e=>info> colu$n=>*+,O> t4pe=>strin>/@

;/class@

;/"ibernate-$appin@

Step : Create 6riter+ava bean "lass

public class Jriter {

private int id;

private String na)e;

private List stories;

public void setId#int i$ {

id ! i;

3public int getId#$ {

return id;

3

public void set=a)e#String n$ {

na)e ! n;

3

public String get=a)e#$ {


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return na)e;

3

public void setStories#List l$ {

stories ! l;

3

public List getStories#$ {return stories;

3

3

Step -//Hibernate/Hibernate Confiuration D%D .2//'+>



;session-factor4@


;propert4


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;propert4


@


;propert4 na$e=>connection.pass!ord>@tec"fa6;/propert4@;-- JDBC connection pool use t"e built-inI --@






;propert4



;propert4 na$e=>current:session:conte#t:class>@t"read;/propert4@;-- Disable t"e second-level cac"e --@

;propert4


pert4@




;$appin resource=>stor4."b$.#$l>/@

;$appin resource=>!riter."b$.#$l>/@

;/session-factor4@


Here is the "ode ) how to save

Save 'xa)ple ""

Jriter &r ! ne& Jriter#$;

&r"set=a)e#Das$;

rra(List list ! ne& rra(List#$;

list"add#ne& Stor(#Stor( =a)e ?$$;

list"add#ne& Stor(#Stor( =a)e C$$;

&r"setStories#list$;

-ransaction transaction ! null;

tr( {

transaction ! session"begin-ransaction#$;

session"save#&r$;

transaction"co))it#$;

3 catch #'xception e$ {

i #transaction K! null$ {


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transaction"rollback#$;

thro& e;

3

3 inall( {

session"close#$;

3


%ne to &any Bi-Dire!tional )elation in Hibernate

"here are two table 5'7"E' and S"O'@;"ibernate-$appin@

;class na$e=>)riter> table=>)5*%'5>@



;/id@

;list na$e=>stories> cascade=>all>@

;Ke4 colu$n=>parent:id>/@


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;one-to-$an4 class=>Stor4>/@

;/list@


;/class@

;/"ibernate-$appin@

Step ; &apping storyhbmxml- 6hi"h maps to STO' TA!$E

;1.2>


;"ibernate-$appin@

;class na$e=>Stor4> table=>stor4>@

;id na$e=>id> colu$n=>*D> t4pe=>int> unsaved-value=>2>@;enerator class=>incre$ent>/@

;/id@

;propert4 na$e=>info> colu$n=>*+,O> t4pe=>strin>/@

;$an4-to-one na$e=>!riter> colu$n=>*D> la4=>false>/@

;/class@

;/"ibernate-$appin@

Step : Create 6riter+ava bean "lass

public class Jriter {private int id;


private List stories;

public void setId#int i$ {

id ! i;

3

public int getId#$ {

return id;

3


na)e ! n;

3


return na)e;

3

public void setStories#List l$ {

stories ! l;

3

public List getStories#$ {


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return stories;

3

3

Step "ttpE//"ibernate.sourcefore.net/"ibernate-confiuration-.2.dtd>@


;session-factor4@


;propert4


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;propert4


@


;propert4 na$e=>connection.pass!ord>@tec"fa6;/propert4@;-- JDBC connection pool use t"e built-inI --@






;propert4



;propert4 na$e=>current:session:conte#t:class>@t"read;/propert4@;-- Disable t"e second-level cac"e --@

;propert4


pert4@




;$appin resource=>stor4."b$.#$l>/@


;/session-factor4@



&any to &any )elation in Hibernate

"here are two table E4E-"S and S2EAGE'S . One Event !an have mltiple spea1ers. And OneSpea1er !an spea1 in mltiple Event. So this is many to many relation. "o maintain this relation

we have to introd!e third "AB#E name E4E-"S2EAGE'S .

Step 7 "reate a tables EBE0TS * S@EAE'S and EBE0TDS@EAE'S in your database

create table 'M'+%S

event:id nu$ber //5*8A5 L'

event:na$e varc"ar


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IG

create table S'AL'5S

speaKer:id nu$ber //5*8A5 L'

speaKer:na$e varc"ar

IG

create table 'M'+%:S'AL'5S elt nu$ber//pri$ar4 Ke4 event:id nu$ber speaKer:id nu$ber

IG

Step 8 eventhbmxml - Hibenate mapping-6hi"h maps to EBE0TS TA!$E

;1.2>

>"ttpE//"ibernate.sourcefore.net/"ibernate-$appin-.2.dtd>@;"ibernate-$appin@

;class na$e=>'vent> table=>events>@

;id na$e=>id> colu$n=>event:id> t4pe=>lon>@


;/id@

;propert4 na$e=>na$e> colu$n=>event:na$e> t4pe=>strin>

lent"=>122>/@

;set na$e=>speaKers> table=>event:speaKers>

cascade=>all>@

;Ke4 colu$n=>event:id>/@

;$an4-to-$an4 class=>SpeaKer>/@;/set@

;/class@

;/"ibernate-$appin@

Step ; &apping spea3erhbmxml- 6hi"h maps to S@EAE'S TA!$E

;1.2>>"ttpE//"ibernate.sourcefore.net/"ibernate-$appin-.2.dtd>@

;"ibernate-$appin@

;class na$e=>SpeaKer> table=>speaKers>@

;id na$e=>id> colu$n=>speaKer:id> t4pe=>lon>@


;/id@

;propert4 na$e=>na$e> colu$n=> speaKer:na$e>
http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtdhttp://hibernate.sourceforge.net/hibernate-mapping-3.0.dtdhttp://hibernate.sourceforge.net/hibernate-mapping-3.0.dtdhttp://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd


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t4pe=>strin> lent"=>122>/@

;set na$e=>events> table=>event:speaKers> cascade=>all>@

;Ke4 colu$n=>speaKer:id>/@

;$an4-to-$an4 class=>'vent>/@

;/set@

;/class@;/"ibernate-$appin@

Step : Create Event+ava bean "lass

public class 'vent{

private long id;


private Set speakers;

public void setId#long id$ {

this"id ! id;3

public long getId#$ {

return id;

3


return na)e;

3

public void set=a)e#String na)e$ {

this"na)e ! na)e;

3

public void setSpeakers#Set speakers$ {

this"speakers ! speakers;

3

public Set getSpeakers#$ {

return speakers;

3

3

Step


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return id;

3


return na)e;

3

public void set=a)e#String na)e$ {this"na)e ! na)e;

3

public Set get'vents#$ {

return this"events;

3

public void set'vents#Set events$ {

this"events ! events;

3

3

Step = add eventhbmxml and spea3erhbmxml into hibernate"fgxml

;



;session-factor4@


;propert4

na$e=>connection.driver:class>@co$.$4s6l.jdbc.Driver;/propert4@;propert4


@







;propert4 na$e=>"ibernate.cp2.$a#:state$ents>@72;/propert4@;-- 84S9& dialect//different for different Database --@

;propert4





;propert4


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pert4@




;$appin resource=>event."b$.#$l>/@;$appin resource=>speaKer."b$.#$l>/@

;/session-factor4@


Here is the "ode ) how to save and fet"h data

'vent event ! ne& 'vent#$;

event"set=a)e#Inverse test$;

event"setSpeakers#ne& HashSet#$$;

event"getSpeakers#$"add#ne& Speaker#6a)7 event$$;

event"getSpeakers#$"add#ne& Speaker#S(a)7 event$$;

session"save#event$; /// Save ll the Data

event ! #'vent$ session"load#'vent"class7 event"getId#$$;

Set speakers ! event"getSpeakers#$;

or #Iterator i ! speakers"iterator#$; i"has=ext#$;$ {

Speaker speaker ! #Speaker$ i"next#$;

S(ste)"out"println#speaker"get:irst=a)e#$$;

S(ste)"out"println#speaker"getId#$$;

3


H$#' Te Hibernate $uery #anguage%"e Hibernate 9uer4 &anuae is

e#ecuted usin session.create9uer4I. %"is tutorial includes fro$

clauseAssociations and joins Areate functions%"e order b4 clause%"e roup

b4 clauseSub6ueries.

The from "lause

fro$ '$plo4ee // '$plo4ee is class na$e $apped to

'8&O'' %AB&'

or

fro$ '$plo4ee as e

or

fro$ '$plo4ee e !"ere e.e$p*d = G


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&ist e$p&ist = session.create9uer4>fro$ '$plo4ee>I.listIG

Asso"iations and +oins

fro$ '$plo4ee e !"ere e.scope8od,la = 1 and pc.isDeleted = 1

&ist e$p&ist = session.create9uer4>fro$ '$plo4ee e !"ere

e.scope8od,la = 1 and pc.isDeleted = 1>I.listIG

Aggregate fun"tions

select avcat.!ei"tI su$cat.!ei"tI $a#cat.!ei"tI

countcatI fro$ Cat cat Scrollable5esults rs =

session.create9uer4>select avcat.!ei"tI su$cat.!ei"tI$a#cat.!ei"tI countcatI fro$ Cat cat>I.scrollIG

ifrs.ne#tIIN

S4ste$.out.printlnrs.et2IIG

S4ste$.out.printlnrs.et1IIG

S4ste$.out.printlnrs.etIIG

S4ste$.out.printlnrs.etIIG

The order by "lause

fro$ '$plo4ee e order b4 e.na$e desc

&ist e$p&ist = session.create9uer4>fro$ '$plo4ee e order b4

e.na$e desc>I.listIG

asc or desc indicate ascendin or descendin order

respectivel4.

The group by "lause

select e.dept su$e.salar4I counteI '$plo4ee e roup b4cat.dept

Sub,ueries

fro$ '$plo4ee as e

!"ere e.na$e = so$e


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select na$e.nicK+a$e fro$ +a$e as na$e

I


Criteria $ueries%"e interface or."ibernate.Criteria represents a 6uer4

aainst a particular persistent class. %"e Session is a factor4 for Criteria instances.

Criteria ) Sele"t from Employee

Criteria crie$p = session.createCriteria'$plo4ee.classIG

&ist e$plist = crie$p.listIG

'estri"tions to narrow result set

"he !lass org.hibernate.!riterion.'estri!tions sed to narrow reslt set.

// S'&'C% P ,5O8 '8&O'' )H'5' AQ'=(G ----S9&

CO88A+D

criteria 6uer4 for above 6uer4 is E

&ist e$p&ist =

session.createCriteria'$plo4ee.classI.add 5estrictions.e6>a

e> ne! *nteer(I I I.listIG// +ot '6ual in "ibernate criteria // S'&'C% P ,5O8 '8&O''

)H'5' AQ' =(G ----S9& CO88A+D


&ist e$p&ist =

session.createCriteria'$plo4ee.classI.add 5estrictions.ne>a

e> ne! *nteer(I I I.listIG

Ordering the results

// S'&'C% P ,5O8 '8&O'' )H'5' AQ'=( O5D'5 B'8:+A8' D'SCG ----S9& CO88A+D


&ist e$p&ist = session.createCriteria'$plo4ee.classI.

add 5estrictions.e6>ae> ne!

*nteer(I I I.addOrder Order.desc>e$pna$e>I I.listIG


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Asso"iations

// S'&'C% e.na$e ,5O8 '8&O'' e address a !"ere

e.address:id=a.address:id and a.countr4=FUSFG ----S9&

CO88A+D

criteria 6uer4 for above 6uer4 is E&ist e$p&ist =

session.createCriteria'$plo4ee.classI.createAlias>address>>a

dd>I. add 5estrictions.e6>add.countr4> >US> I I.listIG

Example ,ueries

"he !lass org.hibernate.!riterion.Example allows yo to !onstr!t a *ery !riterion from a given

instan!e.

// S'&'C% P ,5O8 '8&O'' e )H'5' e.dept=F*%FG ----S9&

CO88A+D


'$plo4ee e$p = ne! '$plo4eeIG

cat.setDeptF*%FIG

&ist e$plist = session.createCriteria'$plo4ee.classI

.add '#a$ple.createe$pI I

.listIG


Criteria $ueries ' E*ual +e*, .ot E*ual+ne, #ess tan +lt, #ess tan

or e*ual+le, greater tan +gt,greater tan or e*ual+ge, and %rdering te

results%"e interface or."ibernate.Criteria represents a 6uer4 aainst a particular

persistent class. %"e Session is a factor4 for Criteria instances. *n t"is section it

s"o! "o! to create %AB&' and OJO Java class and 8appin !it" t"e 9uer4.

Create TA!$E E&@$OEE

Create %AB&' '8&O''

id nu$berG

na$e varc"arG

ae nu$berG

IG


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Create Employee+ava bean "lass

Hibernate ses the 2lain Old Java Ob)e!ts +2OJOs, !lasses to map to the database table+Emp.)ava to E&2#O


;"ibernate-$appin@

;class na$e=>'$plo4ee> table=>'8&O''>@



Ke4

;/id@


;propert4 na$e=>ae> colu$n=>ae> t4pe=>int>/@


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;/class@

;/"ibernate-$appin@

E,ual .e,/

E*al +e*, 7s sed to !he!1 e*al in the *ery.

// S'&'C% P ,5O8 '8&O'' )H'5' AQ'=(G ----S9&

CO88A+D


&ist e$p&ist =

session.createCriteria'$plo4ee.classI.add 5estrictions.e6>a


0otE,ual .ne/

-otE*al +ne, 7s sed to !he!1 not e*al in the *ery.

// S'&'C% P ,5O8 '8&O'' )H'5' AQ' =(G ----S9&

CO88A+D

// +ot '6ual in "ibernate criteria criteria 6uer4 for above 6uer4

is E

&ist e$p&ist =

session.createCriteria'$plo4ee.classI.add 5estrictions.ne>a


$ess than .lt/

#ess than +lt, 7s sed to !he!1 less than in the *ery.

// S'&'C% P ,5O8 '8&O'' )H'5' AQ' ; (G ----S9&

CO88A+D


is E

&ist e$p&ist =

session.createCriteria'$plo4ee.classI.add 5estrictions.lt>ae

> ne! *nteer(I I I.listIG

$ess than or e,ual.le/


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#ess than or e*al+le, 7s sed to !he!1 less than or e*al in the *ery.

// S'&'C% P ,5O8 '8&O'' )H'5' AQ' ;= (G ----S9&

CO88A+D


is E&ist e$p&ist =

session.createCriteria'$plo4ee.classI.add 5estrictions.le>ae

> ne! *nteer(I I I.listIG

Freater than .gt/

Ireater than +gt, 7s sed to !he!1 greater than in the *ery.

// S'&'C% P ,5O8 '8&O'' )H'5' AQ' @ (G ----S9&

CO88A+D


is E

&ist e$p&ist =

session.createCriteria'$plo4ee.classI.add 5estrictions.t>a


Freater than or e,ual .gt/

Ireater than or e*al +gt, 7s sed to !he!1 greater than or e*al in the *ery.

// S'&'C% P ,5O8 '8&O'' )H'5' AQ' @= (G ----S9&

CO88A+D


is E

&ist e$p&ist =

session.createCriteria'$plo4ee.classI.add 5estrictions.e>a


Ordering the results

// S'&'C% P ,5O8 '8&O'' )H'5' AQ'=( O5D'5 B +A8'

D'SCG ----S9& CO88A+D


&ist e$p&ist = session.createCriteria'$plo4ee.classI.

add 5estrictions.e6>ae> ne!


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*nteer(I I I.addOrder Order.desc>na$e>I I.listIG


Criteria $ueries' And %) !onditions%"e interface or."ibernate.Criteria

represents a 6uer4 aainst a particular persistent class. %"e Session is a factor4 for

Criteria instances. *n t"is section it s"o! "o! to create %AB&' and OJO Java class

and 8appin !it" t"e 9uer4.

Create TA!$E E&@$OEE

Create %AB&' '8&O''

id nu$berG

na$e varc"arG

ae nu$berG

IG

Create Employee+ava bean "lass



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3

public int getge#$ {

return age;

3

private void setge#int age$ {

this"age ! age;3

3

Employeehbmxml - This mapps E&@$OEE TA!$E and Emp+ava

;1.2>

>"ttpE//"ibernate.sourcefore.net/"ibernate-$appin-.2.dtd>@;"ibernate-$appin@

;class na$e=>'$plo4ee> table=>'8&O''>@



Ke4

;/id@


;propert4 na$e=>ae> colu$n=>ae> t4pe=>int>/@

;/class@

;/"ibernate-$appin@

And Condtion

"his method retrns the !on)n!tions of two expressions. Both !onditions are ;tre; then it

ex!tes the *ery otherwise not.

// S'&'C% P ,5O8 '8&O'' )H'5' AQ'=( A+D AQ'=?G

----S9& CO88A+D


&ist e$p&ist = session.createCriteria'$plo4ee.classI.add 5estrictions.e6>ae> ne! *nteer(I I I

.add 5estrictions.e6>ae> ne! *nteer?I I I

.listIG

O' Condtion


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"his method retrns the dis)!tion of two expressions. Any given !ondition is ;tre; then it

exe!tes the *ery. 7n this ttorial( or is sed

// S'&'C% P ,5O8 '8&O'' )H'5' AQ'=( O5 AQ'=?G

----S9& CO88A+D

criteria 6uer4 for above 6uer4 is E&ist e$p&ist = session.createCriteria'$plo4ee.classI

.add'#pression.or

'#pression.e6>ae> ne! *nteer(I I I

'#pression.e6>ae> ne! *nteer?I I II

.listIG

Hibernate Tutorial Step by Step -- Code ExamplesHibernate /generator0 to generate id +primary 1ey,

"he optional /generator0 !hild element names a Java !lass sed to generate ni*e identifiers

for instan!es of the persistent !lass

incrementgenerates identifiers of type long( short or int that are ni*e only when no other

pro!ess is inserting data into the same table. Do not se in a !lster. 8ollow the setps

Step 7 "reate a table name E&@$OEE in your database

// for 84S9&

create table '8&O''

id biint2I

na$e varc"ar

IG

// ,O5 O5AC&'

create table '8&O''

id nu$berG

na$e varc"ar

IG

Step 8 Create Emp+ava bean "lass



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public class ')p {

private long id;


public long getId#$ {

return id;

3private void setId#long id$ {

this"id ! id;

3


return na)e;

3

public void set=a)e#String na)e$ {

this"na)e ! na)e;

3

3

Step ; Emphbmxml - This mapps E&@$OEE TA!$E and Emp+ava ) incrementfor

the generator "lass

;1.2>


;"ibernate-$appin@

;class na$e=>'$p> table=>'8&O''>@;id na$e=>id> colu$n=>id> t4pe=>lon>@


Ke4

;/id@


;/class@

;/"ibernate-$appin@

Step : add Emphbmxml into hibernate"fgxml

Hibernate provided !onne!tion pooling sning !=p and transa!tion management . Hibernate

ses the hibernate.!fg.xml to !reate the !onne!tion pool and setp re*ired environment

;


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;session-factor4@


;propert4



@







;propert4 na$e=>"ibernate.cp2.$a#:state$ents>@72;/propert4@;-- 84S9& dialect//different for different Database --@

;propert4





;propert4


pert4@




;$appin resource=>'$p."b$.#$l>/@

;/session-factor4@


Step


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Session session ! null;

tr({ // -his step &ill read hibernate"cg"x)l

Session:actor( session:actor( ! ne&

%oniguration#$"conigure#$"buildSession:actor(#$;

session !session:actor("openSession#$;

S(ste)"out"println#Inserting 6ecords$;')p e)p? ! ne& ')p#$;

e)p?"set=a)e#=ick$;

session"save#e)p?$; // Je are =ot adding id 7 hibernate auto)aticall(

incre)ent the value

')p e)pC ! ne& ')p#$;

e)pC"set=a)e#Das$;

session"save#e)pC$; // Je are =ot adding id 7 hibernate auto)aticall(

incre)ent the value

session"lush#$; // insert data into databse

S(ste)"out"println#Save Done inish database insert$;

// =o& etch the ')plo(ee data

List e)pList ! session"createEuer(#ro) ')p$"list#$;//e)pList contains the list o ')plo(ee

or#int i!F;i

')p e)p ! #')p$e)pList"get#i$;

S(ste)"out"println#e)p"getId#$$;

S(ste)"out"println#e)p"get=a)e#$$;

3

// 9ut put is . ? =ick C Das


3inall({

session"close#$;

3

3

3


2revent !on!urrent update in Hibernate

"his ttorial resolve the isse of 6ser thin1 time + one ser edit the re!ord for pdate and

thin1ing and !hanging vales ( same time other ser edit the same re!ord and pdate. then firstser pdate and :nd ser;s data is lost.,


40/61

data.

8or example

6ser A edit the row of the "AB#E for pdate + 7n the 6ser 7nterfa!e !hanging data $ "his is serthin1ing time, and in the same time 6ser B edit the same re!ord for pdate and !li!1 the pdate.

"hen 6ser A !li!1 the 6pdate and pdate done. Chnage made by ser B is lost.

7n hibernate yo !an perevent slate ob)e!t pdatation sing version !he!1ing.Che!1 the version of the row when yo are pding the row.

Iet the version of the row when yo are fet!hing the row of the "AB#E for pdate.

On the time of pdation )st fet!h the version nmber and mat!h with yor version nmber + onthe time of fet!hing,.

Below steps to prevent !on!rrent pdate in Hibernate.

Step 7 e"lare a variable Gversion4dG in your bean Class with setter and getter method

public class Jriter {

private int id;

private String na)e;private long versionId; public void setId#int i$ {

id ! i;

3

public int getId#$ {

return id;

3


na)e ! n;

3


return na)e;

3public long getGersionId#$ {

return versionId;

3

public void setGersionId#long versionId$ {

this"versionId ! versionId;

3

3

Step 8 Add Extra "oulmn name GversionG in the 6'4TE' TA!$E

create table )5*%'5

*D nu$ber //5*8A5 L'

+A8' varc"ar

version nu$ber

IG


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Step ; Add property in writerhbmxml and optimisti"-lo"3GversionG - 6hi"h maps to

6'4TE' TA!$E

;1.2>>"ttpE//"ibernate.sourcefore.net/"ibernate-$appin-.2.dtd>@

;"ibernate-$appin@

;class na$e=>)riter> table=>)5*%'5> opti$istic-

locK=>version>@



;/id@


;version na$e=>version*d> t4pe=>lon> colu$n=>version> /@

;/class@;/"ibernate-$appin@

Step : add writerhbmxml into hibernate"fgxml

;



;session-factor4@;-- Database connection settins --@

;propert4


;propert4


@




;propert4 na$e=>"ibernate.cp2.$in:sie>@1;/propert4@;propert4 na$e=>"ibernate.cp2.$a#:sie>@(;/propert4@




;propert4




42/61



;propert4


pert4@

;-- 'c"o all e#ecuted S9& to stdout --@;propert4 na$e=>s"o!:s6l>@true;/propert4@



;/session-factor4@


Step


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"his ttorial resolve the isse of 6ser thin1 time + one ser edit the re!ord for pdate andthin1ing and !hanging vales ( same time other ser edit the same re!ord and pdate. then first

ser pdate and :nd ser;s data is lost.,


44/61

create table )5*%'5


+A8' varc"ar

version nu$ber

IG


6'4TE' TA!$E

;1.2>


;"ibernate-$appin@


locK=>version>@



;/id@



;/class@

;/"ibernate-$appin@


;



;session-factor4@


;propert4



@






45/61





;propert4

na$e=>dialect>@or."ibernate.dialect.84S9&Dialect;/propert4@;-- 'nable HibernateFs auto$atic session conte#t $anae$ent --@



;propert4


pert4@




;$appin resource=>!riter."b$.#$l>/@;/session-factor4@


Step


46/61



"his ttorial resolve the isse of 6ser thin1 time + one ser edit the re!ord for pdate andthin1ing and !hanging vales ( same time other ser edit the same re!ord and pdate. then firstser pdate and :nd ser;s data is lost.,


47/61

Step 8 Add Extra "oulmn name GversionG in the 6'4TE' TA!$E

create table )5*%'5


+A8' varc"ar

version nu$berIG


6'4TE' TA!$E

;1.2>


;"ibernate-$appin@


locK=>version>@



;/id@



;/class@

;/"ibernate-$appin@


;



;session-factor4@


;propert4


;propert4


@




48/61






;-- 84S9& dialect//different for different Database --@;propert4





;propert4


pert4@


;propert4 na$e=>s"o!:s6l>@true;/propert4@;propert4 na$e=>"b$ddl.auto>@update;/propert4@


;/session-factor4@


Step


49/61

3ntegrate Struts Spring Hibernate 4eb Appli!ation

"his ttorial gide yo to 7ntegrate Strts Spring Hibernate in a web appli!ation.

Strts 4iew +6ser 7nterfa!e,Spring Servi!e #ayer

Hibernate DAO layer

Here is the steps for 7ntegration Strts Spring Hibernate 5eb Appli!ation

ou "an download the "ode with 9ip strutsspringhibernate9ipCode is ready+ust

download and run in tom"at Cli"3 donate button

Steps to run t"e do!nloded code E

step 1. unip t"e do!nloaded ip file to DERto$catR!ebappsR director4.step . DERto$catRbin @ stratup.bat

step . Qo to bro!ser and t4pe t"e U5& E

"ttpE//local"ostE?2?2/strutssprin"ibernate/user,or$.do
http://www.techfaq360.com/tutorial/spring/strutsspringhibernate.ziphttp://localhost:8080/strutsspringhibernate/userForm.dohttp://www.techfaq360.com/tutorial/spring/strutsspringhibernate.ziphttp://localhost:8080/strutsspringhibernate/userForm.do


50/61

step >. Enter 6ser -ame and Department and sbmit the save btton.

Here is te !ode Explanation

Struts 2art

Step 7 Add A"tionServlet in webxml

ActionServlet

ActionServlet is t"e controller in Struts.

ActionServlet loads t"e struts-confi.#$l.

On load-on-startup t"e servlet container *nstantiate t"e ActionServlet .


51/61

"irst Tas1 by A!tionServlet '%"e ActionServlet taKes t"e Struts Confi file na$e

as an init-para$.

At startup in t"e initI $et"od t"e ActionServlet reads t"e Struts Confi file and

load into $e$or4.

Se!ond Tas1 by A!tionServlet ' *f t"e user t4pes

"ttpE//local"ostE?2?1/strutssprin"ibernate/user,or$.doin t"e bro!ser U5& bar t"eU5& !ill be intercepted and processed b4 t"e ActionServlet since t"e U5& "as a

pattern P.do !it" a suffi# of >do>. Because servlet-$appin is

;servlet-$appin@

;servlet-na$e@action;/servlet-na$e@

;[email protected];/url-pattern@

;/servlet-$appin@

Tird Tas1 by A!tionServlet '%"en ActionServlet deleates t"e re6uest "andlin

to anot"er class called )e*uest2ro!essorb4 invoKin its processI $et"od.

;servlet@


;[email protected]"e.struts.action.ActionServlet;/servlet-class@

;init-para$@

;para$-na$e@confi;/para$-na$e@

;para$-value@/)'B-*+,/struts-confi.#$l;/para$-value@

;/init-para$@


;/servlet@

;servlet-$appin@


;[email protected];/url-pattern@;/servlet-$appin@

Step 8 add A"tion&apping in struts-"onfigxml

httpKKlo!alhost9KstrtsspringhibernateKser8orm.do!all to K)spKser8orm.)sp )sp.

;1.2> encodin=>*SO-??73-1>

>"ttpE//jaKarta.apac"e.or/struts/dtds/struts-confi:1:.dtd>@

;struts-confi@

;for$-beans@
http://localhost:8081/strutsspringhibernate/userForm.dohttp://localhost:8081/strutsspringhibernate/userForm.dohttp://jakarta.apache.org/struts/dtds/struts-config_1_2.dtdhttp://localhost:8081/strutsspringhibernate/userForm.dohttp://localhost:8081/strutsspringhibernate/userForm.dohttp://jakarta.apache.org/struts/dtds/struts-config_1_2.dtd


52/61

;for$-bean na$e=>User,or$>

t4pe=>co$.User,or$>@

;/for$-bean@

;/for$-beans@

;action-$appins@

;action

pat"=>/user,or$>

t4pe=>or.apac"e.struts.actions.,or!ardAction>

para$eter=>/jsp/user,or$.jsp>/@

;action

pat"=>/saveUser>t4pe=>co$.UserSaveAction>

na$e=>User,or$>

scope=>re6uest>

validate=>false>

input=>/paes/*nput.jsp>@

;for!ard na$e=>success> pat"=>/jsp/success.jsp>/@

;/action@

;/action-$appins@

;/struts-confi@

Enter sername and deptname and !li!1 the Save btton.

Save btton !alls Ksave6ser.do ( save6ser.do !alls !om.6serSaveA!tion based on above!onfigration in strts$!onfig.xml.

Step ; user#orm+sp and su""ess+sp

user,or$.jsp is t"e for$ !"ere 4ou enter t"e User +a$e and Depart$ent

M5 taglib uri!/J'BI=:/strutsht)l"tld preix!ht)lMN

M5 taglib uri!/J'BI=:/strutsbean"tld preix!beanMN

ht)l.or) action!/saveUser"do )ethod!postN

User =a)e . ht)l.text propert(!user=a)e si,e!OF

)axlength!?CF/N brN

Depart)ent . ht)l.text propert(!dept=a)e si,e!OF

)axlength!?CF/N brN


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ht)l.sub)itNSave/ht)l.sub)itN /ht)l.or)N

success.jsp

;"@User Data saved ;/"@

!om5(serSaveA!tion56ava

UserSaveAction et t"e user entered infor$ation 5e6uestrocessor set t"e user

entered data into t"e User,or$I. Qet t"e service fro$ applicationConte#t.#$l usin

UserService userservice = UserServiceI Service,inder.etConte#tre6uestI

.etBean>userservice>IG

*n t"e Action class just et t"e data fro$ User,or$ and call to

userservice.saveUseruserbeanIG

package co);

i)port 8avax"servlet"http"HttpServlet6e4uest;

i)port 8avax"servlet"http"HttpServlet6esponse;

i)port org"apache"struts"action"ction;

i)port org"apache"struts"action"ction:or);

i)port org"apache"struts"action"ction:or&ard;

i)port org"apache"struts"action"ction2apping;

public class UserSavection extends ction{

public ction:or&ard execute#ction2apping )apping7

ction:or) or)7

HttpServlet6e4uest re4uest7

HttpServlet6esponse response$ thro&s 'xception{

UserService userservice ! #UserService$

Service:inder"get%ontext#re4uest$

"getBean#userservice$;

User:or) user:or) ! #User:or)$ or);

UserBean userbean ! ne& UserBean#$;

userbean"setUser=a)e#user:or)"getUser=a)e#$$;

userbean"setDept=a)e#user:or)"getDept=a)e#$$;

userservice"saveUser#userbean$;

return )apping"ind:or&ard#success$;


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3

3

!om5(ser"orm56ava

User,or$ is t"e ,or$ !"ic" contain t"e entered user infor$ation.5e6uestrocessor set t"e user entered data into t"e User,or$I.

package co);

i)port org"apache"struts"action"ction:or);

public class User:or) extends ction:or){

String user=a)e;

String dept=a)e;

/**

* 5return 6eturns the dept=a)e"

*/

public String getDept=a)e#$ {

return dept=a)e;

3

/**

* 5para) dept=a)e -he dept=a)e to set"

*/

public void setDept=a)e#String dept=a)e$ {

this"dept=a)e ! dept=a)e;3

/**

* 5return 6eturns the user=a)e"

*/

public String getUser=a)e#$ {

return user=a)e;

3

/**

* 5para) user=a)e -he user=a)e to set"

*/

public void setUser=a)e#String user=a)e$ {

this"user=a)e ! user=a)e;

3

3

Spring 2art


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Step 7 Add Context$oaderServlet in webxml

ContextLoaderServlet

Conte#t&oaderServlet reister an pplication%ontextusin t"e t"e belo!

confiuration in !eb.#$l file.ou can et an4 service Defind in applicationConte#t.#$lI usin

re6uest.etSessionI.etServletConte#tI.etBean>userservice>IG

;para$-na$e@conte#tConfi&ocation;/para$-na$e@

;para$-value@/)'B-*+,/applicationConte#t.#$l;/para$-value@

;/conte#t-para$@

;servlet@

;servlet-na$e@conte#t;/servlet-na$e@

;servlet-

[email protected]$e!orK.!eb.conte#t.Conte#t&oaderServlet;/servlet-

class@


;/servlet@

Step 8 appli"ationContextxml

appli!ationContext.xml !ontains all the Dependen!y 7n)e!tions . And it !ontains hibernate

Session8a!tory information also. Here Hibernate integatred with Spring.serservi!e ob)e!t has serdao ob)e!t as setter 7n)e!tion

serdao ob)e!t has session8a!tory ob)e!t as setter 7n)e!tion.

;1.2> encodin=>U%,-?>


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na$e=>url>@;value@jdbcE$4s6lE//local"ostE20/tec"fa6;/value@;/prop

ert4@

;propert4 na$e=>userna$e>@;value@tec"fa6;/value@;/propert4@

;propert4 na$e=>pass!ord>@;value@tec"fa6;/value@;/propert4@

;/bean@;bean id=>$4Session,actor4>

class=>or.sprinfra$e!orK.or$."ibernate.&ocalSession,actor4Bean>@

;propert4 na$e=>dataSource>@;ref

bean=>$4DataSource>/@;/propert4@

;propert4 na$e=>$appin5esources>@

;list@

;value@/co$/user."b$.#$l;/value@

;/list@

;/propert4@

;propert4 na$e=>"ibernateroperties>@;value@

"ibernate.dialect=or."ibernate.dialect.84S9&Dialect

;/value@

;/propert4@

;/bean@

;bean id=>userdao> class=>co$.UserDAO>@

;propert4 na$e=>session,actor4>@;ref

bean=>$4Session,actor4>/@;/propert4@

;/bean@

;bean id=>userservice> class=>co$.UserService>@

;propert4 na$e=>userdao>@;ref bean=>userdao>/@;/propert4@

;/bean@

;/beans@

!om5(serServi!e56ava

package co);

public class UserService {

private UserD9 userdao;

public void saveUser#UserBean user${

getUserdao#$"saveUser#user$;


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3

/**

* 5return 6eturns the userdao"

*/

public UserD9 getUserdao#$ {return userdao;

3

/**

* 5para) userdao -he userdao to set"

*/

public void setUserdao#UserD9 userdao$ {

this"userdao ! userdao;

3

3

!om5Servi!e"inder56ava

package co);

i)port org"springra)e&ork"context"pplication%ontext;

i)port

org"springra)e&ork"&eb"context"support"Jebpplication%ontextUtils;

i)port 8avax"servlet"Servlet6e4uest;

i)port 8avax"servlet"http"HttpServlet6e4uest;

public class Service:inder {

public static pplication%ontext get%ontext#HttpServlet6e4uest

http6e4uest$ {

return Jebpplication%ontextUtils"get6e4uiredJebpplication%ontext#

http6e4uest"getSession#$"getServlet%ontext#$$;

33

Hibernate 2art

Step 7 Create Table in ata !ase


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C5'A%' %AB&' tec"fa6.user:test

user:id int12I unsined +O% +U&& auto:incre$ent

user:na$e varc"ar(7I default +U&&

dept:na$e varc"ar(7I default +U&&

5*8A5 L' user:idIIG

Step 8 userhbmxml whi"h maps to userDtest TA!$E

;1.2> encodin=>U%,-?>


;"ibernate-$appin@

;class na$e=>co$.UserBean> table=>US'5:%'S%>@

;id na$e=>user*d> colu$n=>US'5:*D> t4pe=>int>@

;enerator class=>native>/@

;/id@

;propert4 na$e=>user+a$e> colu$n=>user:na$e>/@

;propert4 na$e=>dept+a$e> colu$n=>dept:na$e>/@

;/class@

;/"ibernate-$appin@

Step ; (ser!ean+ava whi"h maps to userhbmxml and userDtest TA!$E

package co);

public class UserBean {

int userId;

String user=a)e;

String dept=a)e;


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/**

* 5return 6eturns the user=a)e"

*/

public String getUser=a)e#$ {

return user=a)e;3

/**

* 5para) user=a)e -he user=a)e to set"

*/

public void setUser=a)e#String user=a)e$ {

this"user=a)e ! user=a)e;

3

/**

* 5return 6eturns the dept=a)e"

*/

public String getDept=a)e#$ {return dept=a)e;

3

/**

* 5para) dept=a)e -he dept=a)e to set"

*/

public void setDept=a)e#String dept=a)e$ {

this"dept=a)e ! dept=a)e;

3

/**

* 5return 6eturns the userId"

*/

public int getUserId#$ {

return userId;

3

/**

* 5para) userId -he userId to set"

*/

public void setUserId#int userId$ {

this"userId ! userId;

3

3

Step : (serAO+ava whi"h is used to save user details into ata !ase

package co);

i)port org"hibernate"Session;

i)port org"hibernate"Session:actor(;


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i)port org"hibernate"-ransaction;

i)port

org"springra)e&ork"or)"hibernate"support"HibernateDaoSupport;

public class UserD9 {

private Session:actor( session:actor(;

public void saveUser#UserBean user${

Session session ! getSession:actor(#$"openSession#$;

tr(

{

-ransaction tx ! session"begin-ransaction#$;

session"save#user$;

tx"co))it#$;


e"printStack-race#$;3inall({

session"close#$;

3

3

/**

* 5return 6eturns the session:actor("

*/

public Session:actor( getSession:actor(#$ {

return session:actor(;

3

/**

* 5para) session:actor( -he session:actor( to set"

*/

public void setSession:actor(#Session:actor( session:actor($ {

this"session:actor( ! session:actor(;

3

3


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Hibernate Tutorial Step by Step

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