Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 `ZHP1uQ<
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 t> Q{yw
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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 bk#xiuwT
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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 T)u4S[
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分页支持类: g%J./F=@3
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java代码: 4~?2wvz G4
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package com.javaeye.common.util; Z-Wfcnk
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import java.util.List; dBEIMn@
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publicclass PaginationSupport { VAj<E0>
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publicfinalstaticint PAGESIZE = 30; tbj=~xYf
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privateint pageSize = PAGESIZE; >Gd.&flSj
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privateList items; Y^lQX~I2{
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privateint totalCount; fp !:u
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privateint[] indexes = newint[0]; l:e9y $_)
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privateint startIndex = 0; r#h {$iW
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public PaginationSupport(List items, int Lo3-X
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totalCount){ O k(47nC
setPageSize(PAGESIZE); JieU9lA^&B
setTotalCount(totalCount); mCk5B*Jy
setItems(items); jb@\i@-
setStartIndex(0); c cr" ep
} z-Hkz
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public PaginationSupport(List items, int Z`xyb>$
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totalCount, int startIndex){ EVz9WY
setPageSize(PAGESIZE); U>3
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setTotalCount(totalCount); 0VG=?dq
setItems(items); Fzs>J&sY&
setStartIndex(startIndex); @
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} F ?mA1T>x
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public PaginationSupport(List items, int 4!'1/3cY
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totalCount, int pageSize, int startIndex){ pGk"3.ce
setPageSize(pageSize); u[[/w&UV.,
setTotalCount(totalCount); 32KR--mn%
setItems(items); fk\5D[j^
setStartIndex(startIndex); "o==4?*L
} c%yh(g
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publicList getItems(){ }~GV'7d1
return items; t'Htx1#Zc[
} g^n;IE$B
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publicvoid setItems(List items){ 3:O+GQ*
this.items = items; >0M:&NMda
} wy\o*P9mG)
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publicint getPageSize(){ |$ w0+bV*
return pageSize; g1dmkX
} Si[eAAd'
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publicvoid setPageSize(int pageSize){ }{#7Z8
this.pageSize = pageSize; z=%IcSx;
} {Ot[WF
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publicint getTotalCount(){ {V=vnL--
return totalCount; h+
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}
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publicvoid setTotalCount(int totalCount){ l]/> `62
if(totalCount > 0){ |oFI[PE
this.totalCount = totalCount; s|KfC>#
int count = totalCount / Ta,u-!/I
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pageSize; -
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if(totalCount % pageSize > 0) BMe72
count++; JH-nvv
indexes = newint[count]; P)4x
for(int i = 0; i < count; i++){ @V7;TJk
indexes = pageSize * mnQal>0~
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} a?l_-Fi
}else{ s%hU*^ 8
this.totalCount = 0; |\rSa^:5
} (PyTq
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} EF0Pt
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publicint[] getIndexes(){ $;Q=iv3
return indexes; `s#sE.=o
} _Eszr(zJ
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publicvoid setIndexes(int[] indexes){ <tGI]@Nwk
this.indexes = indexes; aViJ
} k q/t]%(
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publicint getStartIndex(){ nmTm(?yE
return startIndex; 5F% h>tqh
} (X0`1s
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publicvoid setStartIndex(int startIndex){ N:"M&EUM
if(totalCount <= 0) Qd9-u)L<
this.startIndex = 0; EKV+?jj$
elseif(startIndex >= totalCount) |Gf1^8:C9
this.startIndex = indexes +R3\cRM
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[indexes.length - 1]; w++B-_
elseif(startIndex < 0) )er?*^9Z
this.startIndex = 0; A73V6"
else{ 4Z<]4:o
this.startIndex = indexes OHx,*}N
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[startIndex / pageSize]; 8<E!rn-
} 7yc9`j}]
} YlZYS'_
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publicint getNextIndex(){ !$%/
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int nextIndex = getStartIndex() + Y&K<{KA\4
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pageSize; 1(#*'xR
if(nextIndex >= totalCount) )*psDjZ7*
return getStartIndex(); Zj%B7s1A
else R=#q"9qz
return nextIndex; c,3'wnui
} v#FJ+
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publicint getPreviousIndex(){ !mpMa]G3
int previousIndex = getStartIndex() - N'lGA;}i
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pageSize; CS^ oiV%{s
if(previousIndex < 0) }QX2:a
return0; w~cq%%
else JxMyeo%gv
return previousIndex; ^rxfNcU7
} }5TfQV6
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} fY)4]= L
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抽象业务类 q>D4ma^
java代码: $ly#zQR
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/** #G[
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* Created on 2005-7-12 =hOj8;2
*/ .NNcc4+
package com.javaeye.common.business; &dwI8@&
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import java.io.Serializable; G]m[S-
import java.util.List; &8:iB {n
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import org.hibernate.Criteria; /`j K
import org.hibernate.HibernateException; L_.xr
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import org.hibernate.Session; mhJOR'2
import org.hibernate.criterion.DetachedCriteria; YQB]t=Ha
import org.hibernate.criterion.Projections; 6>LQGO
import Gg3?2h"d
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org.springframework.orm.hibernate3.HibernateCallback; 9+N._u
import +*:x#$phx
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org.springframework.orm.hibernate3.support.HibernateDaoS tx|"v|&e2
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upport; KH@) +Rj
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import com.javaeye.common.util.PaginationSupport; mn6p s6OB
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public abstract class AbstractManager extends W O \lny!
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HibernateDaoSupport { L2/<+Zw
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privateboolean cacheQueries = false; _uy5?auQ
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privateString queryCacheRegion; CSk
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publicvoid setCacheQueries(boolean Z+"E*
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cacheQueries){ |"tV["a
this.cacheQueries = cacheQueries; N:gstp
} ^) b7m
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publicvoid setQueryCacheRegion(String -)->Jx:{
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queryCacheRegion){ ~V$5 m j
this.queryCacheRegion = n.H`1@
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queryCacheRegion; `v/tf|v6
} J\,e/{,X
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publicvoid save(finalObject entity){ Z]> e & N
getHibernateTemplate().save(entity); "d^lS@~
} +[l{C+p
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publicvoid persist(finalObject entity){ [#@p{[ ?r
getHibernateTemplate().save(entity); 8-g$HXqs_#
} #.G>SeTn2}
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publicvoid update(finalObject entity){ CPCB!8-5
getHibernateTemplate().update(entity); V:"\(Y
} CYic_rF$
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publicvoid delete(finalObject entity){ G?/8&%8
getHibernateTemplate().delete(entity); W!9f'Yn
} r Xk
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publicObject load(finalClass entity, LF,c-Cv!jL
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finalSerializable id){ 1nM?>j%k
return getHibernateTemplate().load 8w@jUGsc
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(entity, id); gdn,nL`dP
} |c+N)FB
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publicObject get(finalClass entity, +wgUs*(W
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finalSerializable id){ &7y1KwfXn
return getHibernateTemplate().get %;XuA*e
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(entity, id); ;0}"2aGY
} ea;c\84_N
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publicList findAll(finalClass entity){ sBG(CpQ
return getHibernateTemplate().find("from
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" + entity.getName()); sU3V)7"
} 8i
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publicList findByNamedQuery(finalString G!lykk]
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namedQuery){ n7<-lQRaxZ
return getHibernateTemplate hzVr3;3Zn
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().findByNamedQuery(namedQuery); BP><G^
} #Y b9w3N
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publicList findByNamedQuery(finalString query, k5<