Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 P1t5-q
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 Oe$C5KA>LW
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 G.Q+"+*^
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 /W9=7&R0
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分页支持类: r*
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java代码: CV k8MA
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package com.javaeye.common.util; :z[SI{Y
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import java.util.List; M<SZ7^9<
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publicclass PaginationSupport { @c.pOX[]m,
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publicfinalstaticint PAGESIZE = 30; }{$@|6)R
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privateint pageSize = PAGESIZE; M-n +3E9
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privateList items; gY%-0@g
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privateint totalCount; di|l?l^l
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privateint[] indexes = newint[0]; B#=dz,}
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privateint startIndex = 0; G]{)yZ'}
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public PaginationSupport(List items, int >1YJETysO
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totalCount){ r;-\z(h
setPageSize(PAGESIZE); @ Fu|et
setTotalCount(totalCount); #(%6urd
setItems(items); QgP
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setStartIndex(0); Lr`yl$6
} (uSfr]89'
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public PaginationSupport(List items, int N)QW$iw9
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totalCount, int startIndex){ Hg]r5Fe/c
setPageSize(PAGESIZE); xT%CY(:9X
setTotalCount(totalCount); )Ipa5i>t
setItems(items); $(BW |Pc
setStartIndex(startIndex); DUaj]V{_^
} KyjN' F$
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public PaginationSupport(List items, int 2vynz,^ET
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totalCount, int pageSize, int startIndex){ 8q_nOGd
setPageSize(pageSize); `On%1%k8
setTotalCount(totalCount); 2TdcZ<k}J
setItems(items); A," u~6Bn
setStartIndex(startIndex); b^0=X!bg
} q%nWBmPZ~y
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publicList getItems(){ 7"1M3P5*8
return items; gkDB8,C<j
} o<Q~pd#Ip,
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publicvoid setItems(List items){ `rvS(p[s
this.items = items; {q:6;yzxl
} HUZI7rC[=)
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publicint getPageSize(){ zpJQ7hym
return pageSize; Zv-#v
} q.*k
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publicvoid setPageSize(int pageSize){ [:Sl^ Z&6M
this.pageSize = pageSize; -GH>12YP
} :U=*@p4?
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publicint getTotalCount(){ 04o(05K
return totalCount; *4]}_ .rG#
} I=0`xF|4K-
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publicvoid setTotalCount(int totalCount){ V!uW\i/
if(totalCount > 0){ nGq{+
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this.totalCount = totalCount; O|d"0P
int count = totalCount / A|7%j0T
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pageSize; %AaZc=a[c
if(totalCount % pageSize > 0) eot%Th?[
count++; `@RTfBBg
indexes = newint[count]; _->d41
for(int i = 0; i < count; i++){ EJrP{GH
indexes = pageSize * iU+O(vi
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}else{ 0l;TZf=H
this.totalCount = 0; +87|gC7B
} ''tCtG"
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} >4
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publicint[] getIndexes(){ Qu|H_<8g
return indexes; 1aDx 6Mq
} 4}`z^P<C
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publicvoid setIndexes(int[] indexes){ 5<YV`T{5Kl
this.indexes = indexes; yvv]iRk<
} #A\@)wJ
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publicint getStartIndex(){ f3^Anaa]l
return startIndex; uVN2}3!)Y
} f?W_/daP
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publicvoid setStartIndex(int startIndex){ ]Q$S ei5
if(totalCount <= 0) }p5_JXBV
this.startIndex = 0; Kl_(4kQE_
elseif(startIndex >= totalCount) 3$G &~A{
this.startIndex = indexes g8kS}7/
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[indexes.length - 1]; u.;l=tzz
elseif(startIndex < 0) VkFMr8@|
this.startIndex = 0; cDS\=Bf
else{ 52ExRG S
this.startIndex = indexes 0Xb,ne
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[startIndex / pageSize]; z.lIlp2:
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publicint getNextIndex(){ S#kYPe
int nextIndex = getStartIndex() + s@zO`uBc
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pageSize; 7>"dc+Fg
if(nextIndex >= totalCount) /g$G
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return getStartIndex(); L>L IN 1A
else U$|q]N
return nextIndex; sKCYGt$
} hi`[
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publicint getPreviousIndex(){ t'1g+g
int previousIndex = getStartIndex() - bFjH*~
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pageSize; ,oykOda:|
if(previousIndex < 0) (@->AJF1\
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else )pSA|Qt N
return previousIndex; t W+"/<U
} \HXq~Y
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抽象业务类 'Lq+ONX5
java代码: & .0A%
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/** DkX^b:D*f
* Created on 2005-7-12 }`kiULC'=
*/ A'BqNsy
package com.javaeye.common.business; {n|ah{_p|
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import java.io.Serializable; nNq<x^@83
import java.util.List; l`.z^+!8@
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import org.hibernate.Criteria; p[w! SR%=
import org.hibernate.HibernateException; LN~mKoW
import org.hibernate.Session; ]DKRug5
import org.hibernate.criterion.DetachedCriteria; Q 9fK)j1$
import org.hibernate.criterion.Projections; EB|
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import dP?prT
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org.springframework.orm.hibernate3.HibernateCallback; QEg[
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org.springframework.orm.hibernate3.support.HibernateDaoS b"WF]x|^
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import com.javaeye.common.util.PaginationSupport; %cLS*=MO
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public abstract class AbstractManager extends 1aQm r=,
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HibernateDaoSupport { ,VS(4
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privateboolean cacheQueries = false; FY^2 Y
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privateString queryCacheRegion; cef[T(>
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publicvoid setCacheQueries(boolean "]#Ij6ml
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cacheQueries){ <4+P37^~
this.cacheQueries = cacheQueries; KF
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} Ym1vq=
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publicvoid setQueryCacheRegion(String L/Q[N^ (^
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queryCacheRegion){ 1l$2T
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this.queryCacheRegion = (IBT|K
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queryCacheRegion; j1KNgAo<4
} =B9-}]DDO
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publicvoid save(finalObject entity){ a;t}'GQGk
getHibernateTemplate().save(entity); ._^}M<o L
} 0W(mx-[H/
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publicvoid persist(finalObject entity){ ]R_R`X?
getHibernateTemplate().save(entity); n9xP8<w8
} Iz1x| EQ
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publicvoid update(finalObject entity){ `p&[b]b
getHibernateTemplate().update(entity); >*RU:X
} Hl`OT5pNf
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publicvoid delete(finalObject entity){ UB.1xcI
getHibernateTemplate().delete(entity); UxL*I[z5
} 5X20/+aT
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publicObject load(finalClass entity, uX*2Rs$s
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finalSerializable id){ d
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return getHibernateTemplate().load H"FK(N\
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(entity, id); lG)wa
} \P*_zd@%
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publicObject get(finalClass entity, bZNqv-5 4h
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finalSerializable id){ Z#Mm4(KNh
return getHibernateTemplate().get se\f be ^0
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(entity, id); &]DB-t#\
} ?qNU*d
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publicList findAll(finalClass entity){ $AZYY\1
return getHibernateTemplate().find("from !l9{R8m>eJ
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" + entity.getName()); <{isWEW9]3
} jc&k-d>=G
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publicList findByNamedQuery(finalString {4D`VfX_
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namedQuery){ =#2c
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return getHibernateTemplate ;cXw;$&D
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().findByNamedQuery(namedQuery); J?9jD:x
} Ipk;Nq
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publicList findByNamedQuery(finalString query, KLyRb0V
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finalObject parameter){ CIx(SeEF
return getHibernateTemplate {Rkd;`Q`!
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().findByNamedQuery(query, parameter); ?H=q!i
} L}`/v]E"eU
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publicList findByNamedQuery(finalString query, xU.1GI%UPu
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finalObject[] parameters){ ; ~pgF_
return getHibernateTemplate r[S(VPo[()
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().findByNamedQuery(query, parameters); /eI|m9ke
} 2!{D~Gfl=
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publicList find(finalString query){ #7]Jz.S
return getHibernateTemplate().find EhxpMTS
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(query); /eV)5`V
} 'Aq^z%|
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publicList find(finalString query, finalObject C%z)D1-
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parameter){ ("8 Hku?
return getHibernateTemplate().find D0Dz@25-
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(query, parameter); dKzG,/1W[m
} M~A#_%2U
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public PaginationSupport findPageByCriteria `?z('FV
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(final DetachedCriteria detachedCriteria){ q3x"9i
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return findPageByCriteria \u,CixV=
Db|f"3rq?
(detachedCriteria, PaginationSupport.PAGESIZE, 0); $e\s8$EO
} bo\ bs1
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public PaginationSupport findPageByCriteria EpS/"adI-!
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(final DetachedCriteria detachedCriteria, finalint y!b2;- Dp
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startIndex){ GHsDZ(d3.
return findPageByCriteria s<!A<+Sh
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(detachedCriteria, PaginationSupport.PAGESIZE, 74([~Qs _M
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startIndex); C~ &E7w