Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 i>b^n+74>
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 15Yy&9D
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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 E$smr\
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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 ^[^uDE
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分页支持类: )1H]a'j
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java代码: $zxCv7
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package com.javaeye.common.util; {9'"!fH
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import java.util.List; hvZW~
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publicclass PaginationSupport { M7!&gFv8
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publicfinalstaticint PAGESIZE = 30; 1*;?uC\
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privateint pageSize = PAGESIZE; 4.CLTy3W
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privateList items; {*>$LlL
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privateint totalCount; AVyo)=&
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privateint[] indexes = newint[0]; p5G O@^i
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privateint startIndex = 0; *!lq1h
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public PaginationSupport(List items, int }_5z(7}3
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totalCount){ oaRPYgh4
setPageSize(PAGESIZE); LFV;Y.-(h
setTotalCount(totalCount); o"QpV
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setItems(items); ?#slg8[
setStartIndex(0); LNk
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} P,D >gxl
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public PaginationSupport(List items, int IO]Oo3
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totalCount, int startIndex){ .- c3f1i
setPageSize(PAGESIZE); ?aO%\<b
setTotalCount(totalCount); B:+}^=
setItems(items); dpJi5fN
setStartIndex(startIndex); G?>~w[#mQR
} ~~ )&? \N
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public PaginationSupport(List items, int v`x~O+
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totalCount, int pageSize, int startIndex){ |]r# IpVf
setPageSize(pageSize); "%A[%7LY
setTotalCount(totalCount); W+Gu\=s%O
setItems(items); pPG!{:YT
setStartIndex(startIndex); UY%@i
} iWQBo>x
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publicList getItems(){ a;/4 ht
return items; _2f}WY3S
} },[S 9I`p
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publicvoid setItems(List items){ B>a`mFM
this.items = items; YF&SH)Y7
} <uv{/L
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publicint getPageSize(){ n (cSfT
return pageSize; C. 8>
} >2$Ehw:K^
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publicvoid setPageSize(int pageSize){ )S8q.h
this.pageSize = pageSize; l*% voKZG
} #)cRD#0
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publicint getTotalCount(){ U@Aq@d+n
return totalCount; :GL|:
} 5\QNGRu"
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publicvoid setTotalCount(int totalCount){ Kau*e8
if(totalCount > 0){ ;;l(
this.totalCount = totalCount; Mh3zl
int count = totalCount / .fD k5uo
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pageSize; 2px5>4<
if(totalCount % pageSize > 0) X8;03EW;
count++; |G%MiYd
indexes = newint[count]; _Q.3X[88C
for(int i = 0; i < count; i++){ _}JygOew
indexes = pageSize * -P'>~W,~
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} =797;|B H
}else{ YT&_{nL#\
this.totalCount = 0; xn}'!S2-b
} 7*[>e7:A
} u c7Y8iO
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publicint[] getIndexes(){ EidIi"sr
return indexes; ,LzS"lmmo
} _f34p:B%s
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publicvoid setIndexes(int[] indexes){ {v]>sn;P1
this.indexes = indexes; 2ix_,yTO
} jv_sRV
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publicint getStartIndex(){ 1/1P;8F@G
return startIndex; uVisU%p
} f#X`e'1
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publicvoid setStartIndex(int startIndex){ {nHy!{+qqG
if(totalCount <= 0) Gl1`Nx0
this.startIndex = 0; 88G[XkL$2
elseif(startIndex >= totalCount) C<n.C*o
this.startIndex = indexes E,C<ox4e
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[indexes.length - 1]; KrbNo$0%
elseif(startIndex < 0) w y
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this.startIndex = 0; Ir}&|"~H
else{ SXod r}
this.startIndex = indexes 1p8E!c{}j
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[startIndex / pageSize]; ;#Mq=Fr-SG
} {[Yv@CpN
} _Yh4[TT~/
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publicint getNextIndex(){ ,;D74h2F
int nextIndex = getStartIndex() + 1W/=
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pageSize; 5<#H=A~(
if(nextIndex >= totalCount) <&+l;z
return getStartIndex(); gV`:eNo*
else "&2D6
return nextIndex; hw1ZTD:Y
} }xdI{E1 q)
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publicint getPreviousIndex(){ @*2FG\c<
int previousIndex = getStartIndex() - j?&FK
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pageSize; 3\'.1p
if(previousIndex < 0) ;V%lFP3#
return0; j+c)%
else Ws1<Jt3/."
return previousIndex; ?29
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} ;^
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} U}qW9X;o
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抽象业务类 \<PX'mnO
java代码: M>vM@j
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/**
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* Created on 2005-7-12 goHr#@
*/ YTGup]d
package com.javaeye.common.business; 1-qQp.Wj
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import java.io.Serializable; gVI*`$
import java.util.List; ~XZ1,2jA/
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import org.hibernate.Criteria; \Xkx`C
import org.hibernate.HibernateException; (JM4W
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import org.hibernate.Session; D!X{9q}S1
import org.hibernate.criterion.DetachedCriteria; U2bb|6j
import org.hibernate.criterion.Projections; eEU:
import :s$9#}hw,
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org.springframework.orm.hibernate3.HibernateCallback; S>*T&K
import Cu`ZgKLQ
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org.springframework.orm.hibernate3.support.HibernateDaoS %WO;WxG8^
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upport; r7IhmdA
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import com.javaeye.common.util.PaginationSupport; w6E?TI
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public abstract class AbstractManager extends DL~LSh
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HibernateDaoSupport { Z6
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privateboolean cacheQueries = false; wo_FM
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privateString queryCacheRegion; Q \{\uJ x
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publicvoid setCacheQueries(boolean t /47lYN)
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cacheQueries){ j&&^PH9ZY
this.cacheQueries = cacheQueries; a
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} BShZ)t
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publicvoid setQueryCacheRegion(String BHK_=2WYz
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queryCacheRegion){ ;wN.RPE_^
this.queryCacheRegion = zO+nEsf^O
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queryCacheRegion; '<Vvv^Er
} `Y[zF1$kz^
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publicvoid save(finalObject entity){ $]T7Iwk
getHibernateTemplate().save(entity); @vv`86bm
} \e=@h!p
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publicvoid persist(finalObject entity){ 2
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getHibernateTemplate().save(entity); QHQj6]
} $6J5yE
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publicvoid update(finalObject entity){ V]<dh|x
getHibernateTemplate().update(entity); b"zq3$6*
} :N[2*.c[
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publicvoid delete(finalObject entity){ s9'iHe
getHibernateTemplate().delete(entity); 95+}NJ;r
} OI-%Ig%C#l
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publicObject load(finalClass entity, JRNyvG>j
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finalSerializable id){ 7O{\^Jz1
return getHibernateTemplate().load tz)L`g/J~
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(entity, id); 7f(UbO@BD
} 56v<!L5%
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publicObject get(finalClass entity, F{}z[0
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finalSerializable id){ )GR^V=o7,Y
return getHibernateTemplate().get /TB_4{
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(entity, id); f{+8]VA
} v` B_xEl
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publicList findAll(finalClass entity){ [oYe/<3
return getHibernateTemplate().find("from `S.;&%B\
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" + entity.getName()); kg-%:;y.
} SC!IQ80H#D
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publicList findByNamedQuery(finalString [Y:HVr,
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namedQuery){ E+Gea[c
return getHibernateTemplate Ig6s'^
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().findByNamedQuery(namedQuery); CsE|pXVG
} }??q{B@v
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publicList findByNamedQuery(finalString query, qNvKlwR9;k
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finalObject parameter){ P]y5E9 k
return getHibernateTemplate +wio:==
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().findByNamedQuery(query, parameter); CBvBBt*
} -Pvt+I>
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publicList findByNamedQuery(finalString query, PzF)Vg
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finalObject[] parameters){ vi=yR
return getHibernateTemplate wbpxJtJB
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().findByNamedQuery(query, parameters); )45,~+XX
} T xN5K`q
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publicList find(finalString query){ ROfmAc
return getHibernateTemplate().find E+>;tLw3j
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(query); v(0vP}[Q7E
} 5<S1,u5
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publicList find(finalString query, finalObject :@p`E}1r{
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parameter){ 6suc0
return getHibernateTemplate().find g>Z1ZK0;M
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(query, parameter); 7X.1QSuE
} WH/a#F
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public PaginationSupport findPageByCriteria H1@"Yg8
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(final DetachedCriteria detachedCriteria){ kj[[78
return findPageByCriteria :Rq D0>1
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); [R~HhM
} 1HZexV
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public PaginationSupport findPageByCriteria u|Ai<2b$
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(final DetachedCriteria detachedCriteria, finalint !F%dE!
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startIndex){ 6-^+btl)#
return findPageByCriteria 6?`py}:
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(detachedCriteria, PaginationSupport.PAGESIZE, ;Rt,"W)
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startIndex); $@<