Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 6$ \69
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ebTwU]Nb
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 S4!}7NOh
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 /f Ui2[y
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分页支持类: yM`QVO!;
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java代码: 0\DlzIO
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package com.javaeye.common.util; 47yzI-1H+
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import java.util.List; C?-_8OA
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publicclass PaginationSupport { .cCB,re
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publicfinalstaticint PAGESIZE = 30; 8;+dlWp
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privateint pageSize = PAGESIZE; CWx_9b zk
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privateList items; o7^u@*"F
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privateint totalCount; zLS=>iLD{
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privateint[] indexes = newint[0]; - D^.I
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privateint startIndex = 0; eGE[4Z
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public PaginationSupport(List items, int 'j oE-{
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totalCount){ &|#z" E^-
setPageSize(PAGESIZE); 34s>hm=0.
setTotalCount(totalCount); a$2WL g,
setItems(items); Q~#[_Upkc
setStartIndex(0); M?G4k]
} =CGB}qU l0
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public PaginationSupport(List items, int > a"4aYj
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totalCount, int startIndex){ 6 ,j&u7
setPageSize(PAGESIZE); Ps=<@,dks
setTotalCount(totalCount); & 8'QD~
setItems(items); c,FhI~>R
setStartIndex(startIndex); O od?ifA
} F?.J1]
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public PaginationSupport(List items, int >X0c:pPu
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totalCount, int pageSize, int startIndex){ .p?kAf`
setPageSize(pageSize); )uxXG`,h
setTotalCount(totalCount); 8Ssk>M*
setItems(items); @$]
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setStartIndex(startIndex); r}~|,O3bc'
} d_w^u|(K
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publicList getItems(){ Qu6Q)dZ<
return items; UukHz}(E
} !PuW6
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publicvoid setItems(List items){ C$#X6Q!,
this.items = items; [>xGynU0
} M%@=BT
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publicint getPageSize(){ [bZASeh
return pageSize; <lFQ4<"m
} #`Gh8n#
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publicvoid setPageSize(int pageSize){ t]PO4GA
this.pageSize = pageSize; XJ9l,:c,
} FEqR7
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publicint getTotalCount(){ v.pj
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return totalCount; }Pf7YuUZZ
} `|d&ta[{
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publicvoid setTotalCount(int totalCount){ o:C],G_
if(totalCount > 0){ DX)T}V&mP
this.totalCount = totalCount; Z2soy-
int count = totalCount / 7\p<k/TS
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pageSize; '@
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if(totalCount % pageSize > 0) pGh A
count++; 3t^r;b
indexes = newint[count]; L?~-<k
for(int i = 0; i < count; i++){ Kl)PF),
indexes = pageSize * gt=
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} 2Y'=~*tV
}else{ d/3
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this.totalCount = 0; 8 ?+t+m[
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} ~.'NG?
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publicint[] getIndexes(){ ]&kzIxh
return indexes; _m8JU
} 5qW*/
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publicvoid setIndexes(int[] indexes){
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this.indexes = indexes; {V{*rq<)
} K;}h
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publicint getStartIndex(){ #H1ng<QV
return startIndex; E%E3h1Ua
} g,seqh%
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publicvoid setStartIndex(int startIndex){ R9B !F{! 5
if(totalCount <= 0) 3"OD"
this.startIndex = 0; B U^3U x$
elseif(startIndex >= totalCount) ,'69RL?-Wg
this.startIndex = indexes !b+/zXp3I
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[indexes.length - 1]; ?MhY;z`=
elseif(startIndex < 0) ixFuqPij
this.startIndex = 0; _Xn[G>1
else{ d;kdw
this.startIndex = indexes D; 0iNcit
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[startIndex / pageSize]; N>$Nw<wV
} t6)wR
} ,Uh7Q-vd
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publicint getNextIndex(){ Kpo{:a
int nextIndex = getStartIndex() + =os%22*
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pageSize; 9V%s1@K
if(nextIndex >= totalCount) Ba],ONM4k
return getStartIndex(); *CH lg1
else <Eo;CaaF/
return nextIndex; _e;$Y#`EO
} z$d/Vz,a
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publicint getPreviousIndex(){ Y M_\ ZK:
int previousIndex = getStartIndex() - i-b++R/WN
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pageSize; wER>a (
if(previousIndex < 0) '14
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return0; 54 Baz
else xM/B"SG2
return previousIndex; i7fQj,
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} poqx
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} n~#%>C7
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抽象业务类 pOCLyM9c
java代码: ueiXY|
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/** GB(o)I#h
* Created on 2005-7-12 Ua^'KRSO
*/ 24)3^1P\V
package com.javaeye.common.business; pN)9GO5
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import java.io.Serializable; n+M:0{Y|
import java.util.List; ; J~NfL
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import org.hibernate.Criteria; [=Y @Ul
import org.hibernate.HibernateException; 1}C|Javkn
import org.hibernate.Session; /3!KfG
import org.hibernate.criterion.DetachedCriteria; $T\z
import org.hibernate.criterion.Projections; c]>s(/}T
import :t6w+h
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org.springframework.orm.hibernate3.HibernateCallback; SsDe\"?Q
import ThX%Uzd"[;
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org.springframework.orm.hibernate3.support.HibernateDaoS M ]dS>W%U
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upport; b8QA>]6A
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import com.javaeye.common.util.PaginationSupport; -v4kW0G
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public abstract class AbstractManager extends ngprTMO$&
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HibernateDaoSupport { YK/?~p9:
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privateboolean cacheQueries = false; ~n$VCLa
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privateString queryCacheRegion; ca@0?q#
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publicvoid setCacheQueries(boolean
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cacheQueries){ l+'@y (}Q
this.cacheQueries = cacheQueries; K14e"w%6rs
} .(OFYK<
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publicvoid setQueryCacheRegion(String QCFLi n+r
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queryCacheRegion){ 05mjV6j7m
this.queryCacheRegion = %O`e!p
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queryCacheRegion; 6fhH)]0
} 0Zp)
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publicvoid save(finalObject entity){
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getHibernateTemplate().save(entity); hPa:>e
} ^uIP
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publicvoid persist(finalObject entity){ 6eqxwj{S[
getHibernateTemplate().save(entity); <(dHh9$~
} }>I|\Z0I
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publicvoid update(finalObject entity){ 5o 4\Jwt
getHibernateTemplate().update(entity); D<5;4Mb
} FUic7>
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publicvoid delete(finalObject entity){ NGIbUH1[
getHibernateTemplate().delete(entity); 0Ym+10g
} `0Y`]kSY+
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publicObject load(finalClass entity, #Hl0>"k
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finalSerializable id){ ;*^2,_
return getHibernateTemplate().load +G';no\h
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(entity, id); 0b%"=J2/p.
} {3F;:%$`c
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publicObject get(finalClass entity, ~0"(C#l9
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finalSerializable id){ n $RhD93
return getHibernateTemplate().get qjQR0MC
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(entity, id); q}[g/%
} W($}G_j[B1
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publicList findAll(finalClass entity){ SJb+:L>
return getHibernateTemplate().find("from (- `h8M
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" + entity.getName()); !"~x.LX\
} (jbHV.]P9
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publicList findByNamedQuery(finalString h>AK^fX
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namedQuery){ wVU.j$+_#
return getHibernateTemplate xj8yQ Y1
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().findByNamedQuery(namedQuery); HBHDu;u
} \$GM4:R D
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publicList findByNamedQuery(finalString query, ]X
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finalObject parameter){ #-5.G>8
return getHibernateTemplate W^{zlg
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().findByNamedQuery(query, parameter); )Il)
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} 28,Hd!{
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publicList findByNamedQuery(finalString query, /J''`Tf
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finalObject[] parameters){ a"7zz]XO2
return getHibernateTemplate ~6YTm6o
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().findByNamedQuery(query, parameters); @r7ekyO8)
} /Kcp9Qx
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publicList find(finalString query){ |q0F*\z3
return getHibernateTemplate().find X{cFqW7
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(query); D%[yAr;r
} mX8k4$z
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publicList find(finalString query, finalObject ?8AV-rRX
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parameter){ Rq`B'G9|c
return getHibernateTemplate().find P1cI]rriW
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(query, parameter); ViZ Tl~
} 9)P-<
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public PaginationSupport findPageByCriteria jQ>~
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(final DetachedCriteria detachedCriteria){ '" MT$MrT
return findPageByCriteria 1ym^G0"s
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); {`RCh]W
} py\KY R
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public PaginationSupport findPageByCriteria bhk:Szqz
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(final DetachedCriteria detachedCriteria, finalint tUOqF
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startIndex){ ENoGV;WG
return findPageByCriteria hIBW$
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(detachedCriteria, PaginationSupport.PAGESIZE, oU|yBs1
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startIndex); `^d [$IbDW
} hCpX#rg?
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public PaginationSupport findPageByCriteria W20qn>{z
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(final DetachedCriteria detachedCriteria, finalint KOv?p@d
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pageSize, IA6,P>}N
finalint startIndex){ qoZUX3{
return(PaginationSupport) 6h5DvSO
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getHibernateTemplate().execute(new HibernateCallback(){ %imI.6
publicObject doInHibernate ve3-GWT{C
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(Session session)throws HibernateException { `8x.Mv
Criteria criteria = -F->l5
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detachedCriteria.getExecutableCriteria(session); v35!?
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int totalCount = gdj,e ^
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((Integer) criteria.setProjection(Projections.rowCount E]MyP=g$
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()).uniqueResult()).intValue(); r
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criteria.setProjection ]K<mkUpY
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(null); n0
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List items = Jxo#sV-
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criteria.setFirstResult(startIndex).setMaxResults l|jb}9(J
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(pageSize).list(); cXDG(.!n7B
PaginationSupport ps = ]ykMh
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new PaginationSupport(items, totalCount, pageSize, KtMD?
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startIndex); d,V] j-
return ps; RCC~#bb
} gH
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}, true); Au"7w=G`f
} C@F3iwTtp
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public List findAllByCriteria(final h\<;N*Xi
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DetachedCriteria detachedCriteria){ 6'a1]K
return(List) getHibernateTemplate yt5'2!jc
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().execute(new HibernateCallback(){ vyhxS .[9
publicObject doInHibernate 9{-
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(Session session)throws HibernateException { $`'%1;y@
Criteria criteria = Ld4Jp`Zg
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detachedCriteria.getExecutableCriteria(session); 7dh--.i
return criteria.list(); hsJS(qEh.'
} <#ZDA/G(
}, true); A5q%ytI
} C<B1zgX
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public int getCountByCriteria(final Cn"L*\o
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DetachedCriteria detachedCriteria){ 0s2@z5bfX
Integer count = (Integer) R=m9[TgBm
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getHibernateTemplate().execute(new HibernateCallback(){ =N?K)QD`
publicObject doInHibernate cERmCe|/CG
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(Session session)throws HibernateException { Kc#42C;t/
Criteria criteria = 6$'0^Ftm'
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detachedCriteria.getExecutableCriteria(session); ".|?A9m_
return XKEbK\
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criteria.setProjection(Projections.rowCount W^T6^q5;H
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()).uniqueResult(); Ks/Uyu. X
} *#&s+h,^
}, true); wf&1,t3Bgn
return count.intValue(); <