Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 gnLn7?
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 C\Vg{&'
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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 8IGt4UF&?
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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 /L v1$~
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分页支持类: OeElMRU"
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java代码: m"d/b~q
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package com.javaeye.common.util; OBOwz4<
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import java.util.List; DlTR|(AL
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publicclass PaginationSupport { |`O7nOM
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publicfinalstaticint PAGESIZE = 30; 4(cJ^]wb ^
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privateint pageSize = PAGESIZE; vl:J40Kfn
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privateList items; 4w$_]ke
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privateint totalCount; #E$X,[ZFo
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privateint[] indexes = newint[0]; ^6;V}2>v}
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privateint startIndex = 0; @T:faJ5\'
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public PaginationSupport(List items, int bw4oLu?
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totalCount){ SO{p ;g
setPageSize(PAGESIZE); nFM@@oA
setTotalCount(totalCount);
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setItems(items); DN8}glVxV
setStartIndex(0); ~i0R^qfr
} / T
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public PaginationSupport(List items, int b]Z@^<_E
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totalCount, int startIndex){ @;Opx."
setPageSize(PAGESIZE); ?jO 5 9n
setTotalCount(totalCount); <l,o&p,>|c
setItems(items); u0o'K9.r
setStartIndex(startIndex); NwlU%{7W6
} -YGbfd<wq
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public PaginationSupport(List items, int G64Fx*`
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totalCount, int pageSize, int startIndex){ bzZ>lyH
setPageSize(pageSize); b-^p1{A0zW
setTotalCount(totalCount);
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setItems(items); )3A{GZj#6
setStartIndex(startIndex); Y&.UIosWb
} {b)~V3rsY
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publicList getItems(){ Vb|#MNf)
return items; ZC0-wr\
} :aAEJ
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publicvoid setItems(List items){ h9s >LY
this.items = items; FMw&(
} K>/%X!RW
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publicint getPageSize(){
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return pageSize; D=r))
} Iah[j,]r
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publicvoid setPageSize(int pageSize){ 9N8I
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this.pageSize = pageSize; ;#/@+4@a&
} G$M9=@Ug
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publicint getTotalCount(){ 0(TTw(;
return totalCount; RFaSwf,5n
} c=O,;lWFqm
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publicvoid setTotalCount(int totalCount){ S$q=;"
if(totalCount > 0){ 'tgKe!-@
this.totalCount = totalCount; hqvE!Of
int count = totalCount / _fk#<
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pageSize; 3VO2,PCZ
if(totalCount % pageSize > 0) G6 0S|d
count++; YwEpy(}hJm
indexes = newint[count]; %ysZ5:X
for(int i = 0; i < count; i++){ CY:d`4
indexes = pageSize * ~uWOdm-"[
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} kOwMs<1J
}else{ g=L]S-e
this.totalCount = 0; 56lCwXCgA
} 0|4%4Mt
} ||7x;2e
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publicint[] getIndexes(){ y9H%
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return indexes; gV;H6"
} e}Vw!w
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publicvoid setIndexes(int[] indexes){ !|hoYU>@2L
this.indexes = indexes; LkruL_E>
} ,_.I\EY[
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publicint getStartIndex(){ 3g'S\G@
return startIndex; %8~Q!=*Iq
} {P%9
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publicvoid setStartIndex(int startIndex){ IY'=DePd
if(totalCount <= 0)
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this.startIndex = 0; f"G-
elseif(startIndex >= totalCount) CvSIV7zYo
this.startIndex = indexes ?Ea;J0V
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[indexes.length - 1]; ^FmU_Q0
elseif(startIndex < 0) >eQr<-8
this.startIndex = 0; 7"F*u :
else{ #AkV/1Y
this.startIndex = indexes h0--B]f@
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[startIndex / pageSize]; $4kH3+WJ
} 8I20*#
} GG064zPq7
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publicint getNextIndex(){ Bs+(L [Z
int nextIndex = getStartIndex() + ok^d@zI
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pageSize; ='ZRfb&
if(nextIndex >= totalCount) )~4II.`%^
return getStartIndex(); Mv544>:
else "I?Am&>'
return nextIndex; GcIDG`RX
} \6n!3FLl
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publicint getPreviousIndex(){ 6oaazB^L
int previousIndex = getStartIndex() - h!~3Dw>,N
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pageSize; 3`d}~v{
if(previousIndex < 0) ?_x
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else 4'j
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return previousIndex; F^"_TV0va
} sQ6}\
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} M#"524Nz
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抽象业务类 0N[&3Ee8
java代码: d2oh/j6`TA
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/** 3&u_A?;
* Created on 2005-7-12 _{t9 x\=
*/ M` q?Fk
package com.javaeye.common.business; E J$36
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import java.io.Serializable; >_rha~
import java.util.List; N8qDdr9p?c
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import org.hibernate.Criteria; P71 (
import org.hibernate.HibernateException; IdYzgDH
import org.hibernate.Session; ] h-,o
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import org.hibernate.criterion.DetachedCriteria; ur
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import org.hibernate.criterion.Projections; U4m9e|/H;z
import /{wJEuE
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org.springframework.orm.hibernate3.HibernateCallback; ul%h@=n
import ZX ?yL>4
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org.springframework.orm.hibernate3.support.HibernateDaoS TG}*5Z`
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upport; tz#gClo
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import com.javaeye.common.util.PaginationSupport; /9o!*K
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public abstract class AbstractManager extends X;<BzA!H
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HibernateDaoSupport { ?9l [y
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privateboolean cacheQueries = false; 6KD `oUx
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privateString queryCacheRegion; Hzrtlet
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publicvoid setCacheQueries(boolean +/#Ei'do
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cacheQueries){ C6O8RHg
this.cacheQueries = cacheQueries; SyAvKd`g
} UzXE_S
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publicvoid setQueryCacheRegion(String 2X:4CC%5
t){"Tfc:
queryCacheRegion){ 2o>)7^9|#<
this.queryCacheRegion = 83;NIE;
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queryCacheRegion; WL` 9~S
} ypJ".
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publicvoid save(finalObject entity){ Vy_2 .
getHibernateTemplate().save(entity); 8q1wHZ
} Wrr cx(
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publicvoid persist(finalObject entity){ hFiIW77s2
getHibernateTemplate().save(entity); piU/&
} c/_+o;Bc
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publicvoid update(finalObject entity){ o)OUWGjb/K
getHibernateTemplate().update(entity); qlA7tU2p&
} k`GA\&zt
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publicvoid delete(finalObject entity){ DE2a5+^
getHibernateTemplate().delete(entity); rP!#RzL
} iCHt1VV]
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publicObject load(finalClass entity, upeU52@\
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finalSerializable id){ TYI7<-Mp:[
return getHibernateTemplate().load >vuY+o;B
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(entity, id); 7\ nf:.
}
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publicObject get(finalClass entity, q~o,WZG
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finalSerializable id){ U^qt6$bK
return getHibernateTemplate().get 'ejvH;V3i
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(entity, id); 0flg=U9
} Ela-,(Glk
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publicList findAll(finalClass entity){
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return getHibernateTemplate().find("from rHP%0f9:
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" + entity.getName()); u*qV[y5Bl
} N{-]F|XX
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publicList findByNamedQuery(finalString c\% r38
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namedQuery){ ?BhMjsy.
return getHibernateTemplate P>9aI/d9
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().findByNamedQuery(namedQuery); JWA@+u*k
} `# sTmC)
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publicList findByNamedQuery(finalString query, ",{ibh)g$`
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finalObject parameter){ 3pmWDG6L
return getHibernateTemplate KFa_
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().findByNamedQuery(query, parameter); V5 U?F6
} =TqQbadp
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publicList findByNamedQuery(finalString query, n ]dL?BJ
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finalObject[] parameters){ @-OnHE
return getHibernateTemplate KRjV}\}
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().findByNamedQuery(query, parameters); =}PdH`S
} BcD&sQ2F
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publicList find(finalString query){ Z@Ae$ '9H
return getHibernateTemplate().find wu"&|dt
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(query); c*UvYzDZL
} qH['09/F6
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publicList find(finalString query, finalObject inlk++Og
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parameter){ fAB e
return getHibernateTemplate().find fr!Pj(Q1
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(query, parameter); (MHAJ]Rx
} HNL42\Kz!
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public PaginationSupport findPageByCriteria GU Q{r!S
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(final DetachedCriteria detachedCriteria){ _{jjgQJ5
return findPageByCriteria "`asFg
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); fL]Pztsk+
} _w*}\~`=^
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public PaginationSupport findPageByCriteria xAggn
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(final DetachedCriteria detachedCriteria, finalint 2S' {!A
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startIndex){ 'H7x L
return findPageByCriteria !;_H$r0
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(detachedCriteria, PaginationSupport.PAGESIZE, -X+H2G
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startIndex); c)0amM
} $wYFEz
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public PaginationSupport findPageByCriteria DS|KkTy3
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(final DetachedCriteria detachedCriteria, finalint fg#x7v4O
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pageSize, ^}f -!nf[
finalint startIndex){ fh^lO ^
return(PaginationSupport) 0kDK~iT
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getHibernateTemplate().execute(new HibernateCallback(){ #Km:}=
publicObject doInHibernate DQwGUF'(
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(Session session)throws HibernateException { t tXjn
Criteria criteria = /.M+fr S
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detachedCriteria.getExecutableCriteria(session); ];%0qb
int totalCount = KsrjdJx, '
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((Integer) criteria.setProjection(Projections.rowCount %&
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()).uniqueResult()).intValue(); $Ci0I+5w
criteria.setProjection X,8<oX1r
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(null); ^t7x84jhL
List items = g/CxXSv@0
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criteria.setFirstResult(startIndex).setMaxResults m^!Sv?hV
sn k$^
(pageSize).list(); Oo%!>!Lt,
PaginationSupport ps =
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new PaginationSupport(items, totalCount, pageSize, K, (65>86;
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startIndex); O OlTrLL
return ps; FuP}Kec
} `ypL]$cW
}, true); 5]"BRn1*
} `ENP=kL(+
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public List findAllByCriteria(final jW5iqU"{*
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DetachedCriteria detachedCriteria){ 7u%a/ <
return(List) getHibernateTemplate *m_93J
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().execute(new HibernateCallback(){ ko[TDh$T5
publicObject doInHibernate g5R,% 6
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(Session session)throws HibernateException { \.>.c g
Criteria criteria = vj3isI4lU
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detachedCriteria.getExecutableCriteria(session); 9y+[o
return criteria.list(); Zd<[=%d
} {% F`%_{"
}, true); GoeIjuELR
} x YT}>#[
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public int getCountByCriteria(final gB+
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DetachedCriteria detachedCriteria){ IIP.yyh>
Integer count = (Integer) :VFTVmr
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getHibernateTemplate().execute(new HibernateCallback(){ t{ H1u
publicObject doInHibernate G^KC&
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(Session session)throws HibernateException { WD;)VsP
Criteria criteria = *tG11gR,&