Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 A_xUP9g@?
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ;y%C\YB#
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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 wML5T+
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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 I15g G.)
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分页支持类: 3GUJlFj
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java代码: .X(*mmH
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package com.javaeye.common.util; (%^Bp\.02!
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import java.util.List; -4!i(^w[m/
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publicclass PaginationSupport { `Q~`Eq?@
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publicfinalstaticint PAGESIZE = 30; q" %;),@
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privateint pageSize = PAGESIZE; Ow7}&\;^-
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privateList items; kTe0"
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privateint totalCount; km+}./@
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privateint[] indexes = newint[0]; EPMdR66
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privateint startIndex = 0; 8E9W\@\
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public PaginationSupport(List items, int =|G l
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totalCount){ Tl ?]K
setPageSize(PAGESIZE); U3zwC5}BN
setTotalCount(totalCount); \%ZF<sVW
setItems(items); 3kl\W[`?
setStartIndex(0); .Lc<1s
} i'}Z>g5D
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public PaginationSupport(List items, int V3]"ROH
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totalCount, int startIndex){ hc4W|Ofj
setPageSize(PAGESIZE); ND|!U#wMNV
setTotalCount(totalCount); DTw3$:
setItems(items); 3%$nRP
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setStartIndex(startIndex); 0W1=9+c|X
} |( =`l
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public PaginationSupport(List items, int ixFuqPij
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totalCount, int pageSize, int startIndex){ ;v? !Pml2k
setPageSize(pageSize); Y)=89s&t
setTotalCount(totalCount); HBc^[fJ^-
setItems(items); 8}0O @ wq
setStartIndex(startIndex); jLEwFPz
} Zg@NMT
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publicList getItems(){ h) .([
return items; oU.LYz_
} !Xbr7:UPN1
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publicvoid setItems(List items){ k^IC"pUc
this.items = items; XdDy0e4{%<
} .CL\``
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publicint getPageSize(){ 1x^(vn#=
return pageSize; -$]Tn#`Fb
} ?r,lgaw
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publicvoid setPageSize(int pageSize){ ttwfWfX
this.pageSize = pageSize; IaU
} n0T'"i[
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publicint getTotalCount(){ 6J|Y+Y$
return totalCount; 4D`T_l
} fdD?"z
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publicvoid setTotalCount(int totalCount){ 5$e|@/(0
if(totalCount > 0){ \S)\~>.`y!
this.totalCount = totalCount; !`k{Ga
int count = totalCount / @}K'Ic
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pageSize; %r0yBK2uOp
if(totalCount % pageSize > 0) 3+<}Hm+
count++; 8xQ5[Ov
indexes = newint[count]; zUM;Qwl
for(int i = 0; i < count; i++){ Bf;dp`(/
indexes = pageSize * Wb] ha1$
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} C|"h]
}else{ gp:,DC?(
this.totalCount = 0; Y{TzN%|LV
} m
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} }jM&GH1
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publicint[] getIndexes(){ vs/.'yD/C
return indexes; vr|9NP]v
} !_VKJZuH
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publicvoid setIndexes(int[] indexes){ ngprTMO$&
this.indexes = indexes; ,%#FK|
} YK/?~p9:
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publicint getStartIndex(){ ~n$VCLa
return startIndex; fPf8hz>
} ca@0?q#
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publicvoid setStartIndex(int startIndex){ ErK5iTSD
if(totalCount <= 0) -aDGXQM{~
this.startIndex = 0; )\C:|
elseif(startIndex >= totalCount) aU,Zjm7fp
this.startIndex = indexes (c ?OcwTH
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[indexes.length - 1]; %vvA'WG
elseif(startIndex < 0) I
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this.startIndex = 0; H 3YFbR
else{ .eAN`-t;
this.startIndex = indexes |1zoT|}q
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[startIndex / pageSize]; epsh&)5a*
} 4=S.U`t7
} .7Zb,r
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publicint getNextIndex(){ cF9bSY_Eh
int nextIndex = getStartIndex() + Xm./XC
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pageSize; +1R?R9^Fw
if(nextIndex >= totalCount) n0_q-8r
return getStartIndex(); R _WP r[P
else CfKvC
return nextIndex; *Ppb;
} eXY*l>B
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publicint getPreviousIndex(){ >M{=qs
int previousIndex = getStartIndex() - Bb2;zOGdA
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pageSize; ;0ap#6 T
if(previousIndex < 0) )mw#MTv<[
return0; +:3K?G-
else ct+ ;W
return previousIndex; g5X;]%:
} 'M>QA"*48E
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} ezn%*X
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抽象业务类 BbEWa
java代码: "c8
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/** Q>Rjv.1
* Created on 2005-7-12 m~cz
*/ 5+*MqO>
package com.javaeye.common.business; o$]wd*+
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import java.io.Serializable;
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import java.util.List; )[&'\SOO
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import org.hibernate.Criteria; #@s[!4)_I
import org.hibernate.HibernateException; lXH?*
import org.hibernate.Session; fgrflW$
import org.hibernate.criterion.DetachedCriteria; wVU.j$+_#
import org.hibernate.criterion.Projections; xj8yQ Y1
import 0$)uOUVJ
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org.springframework.orm.hibernate3.HibernateCallback; \$GM4:R D
import mw2/jA7
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org.springframework.orm.hibernate3.support.HibernateDaoS
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import com.javaeye.common.util.PaginationSupport; )Il)
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public abstract class AbstractManager extends -]$q8Q(hM
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HibernateDaoSupport { -D*,*L
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privateboolean cacheQueries = false; 4&b*|"Iw
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privateString queryCacheRegion; =-wF Brw
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publicvoid setCacheQueries(boolean cAFYEx/(
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cacheQueries){ /4Ud6gscf
this.cacheQueries = cacheQueries; je_:hDr
} ^n Gj 7b
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publicvoid setQueryCacheRegion(String r<< ]41
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queryCacheRegion){ O5X@'.#rU
this.queryCacheRegion = in}d(%3h
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queryCacheRegion; JZ=ahSi
} gY!+x=cx0
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publicvoid save(finalObject entity){ $?x;?wS0V
getHibernateTemplate().save(entity); -|F(qf
} fcaUj9qN
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publicvoid persist(finalObject entity){ 7]\_7L|>]
getHibernateTemplate().save(entity); h 8Shf"
} g$X4ZRSel
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publicvoid update(finalObject entity){ 8v{0=9,Z
getHibernateTemplate().update(entity); i|N%dl+T=
} :pz`bFJk
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publicvoid delete(finalObject entity){ M3m)ui z
getHibernateTemplate().delete(entity); b}&2j3-n,
} UdGa#rcNW
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publicObject load(finalClass entity, "~V|p3
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finalSerializable id){ eMT}"u8$A
return getHibernateTemplate().load 79HKfG2+KB
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(entity, id); h7?uM^p
} Nqy)jfyex
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publicObject get(finalClass entity, FdwlRu G
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finalSerializable id){ 3'*}ZDC
return getHibernateTemplate().get 0,{tBo
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(entity, id); !3*:6
} ]K<mkUpY
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publicList findAll(finalClass entity){
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return getHibernateTemplate().find("from l|jb}9(J
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" + entity.getName()); S\jIs [Dz
} |g`:K0BI
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publicList findByNamedQuery(finalString RCC~#bb
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namedQuery){ k $d+w][
return getHibernateTemplate )O:T\{7+
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().findByNamedQuery(namedQuery); h*lU&8)m\
} znq/
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publicList findByNamedQuery(finalString query, 7dh--.i
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finalObject parameter){ \L5h&