Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 l7y`$8Co
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 `Ta(P30
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 ?D 9#dGK
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 b2kbuk]
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分页支持类: wgP3&4cSUc
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java代码: 2*DS_=6o
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package com.javaeye.common.util; >} (*s^!k
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import java.util.List; r&~iEO|?\
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publicclass PaginationSupport { d?X6x
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publicfinalstaticint PAGESIZE = 30; RKb3=}
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privateint pageSize = PAGESIZE; 4$w-A-\t
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privateList items; QjbPBk Q
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privateint totalCount; 84\o7@$#
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privateint[] indexes = newint[0]; qinQ5 t
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privateint startIndex = 0; ;//qjo
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public PaginationSupport(List items, int U>jk`?zW
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totalCount){ /s_$CSiB
setPageSize(PAGESIZE); A'R sy6
setTotalCount(totalCount); 2Yjysn
setItems(items); V]cY+4Y
setStartIndex(0); 1OeDWEcB
} )O(Gw-jWE
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public PaginationSupport(List items, int 7ij=%if2@k
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totalCount, int startIndex){ OB@t(KNx*P
setPageSize(PAGESIZE); D4-U[l+K>
setTotalCount(totalCount); -iX!F~qS,
setItems(items); L, GtIZkE
setStartIndex(startIndex);
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} y_r6T
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public PaginationSupport(List items, int }#^F'%zf
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totalCount, int pageSize, int startIndex){ Db:WAjU
setPageSize(pageSize); dPX>A4wp
setTotalCount(totalCount); IvSrJe[;
setItems(items); :|Ty 0>k
setStartIndex(startIndex); \./2Qc,
} E#]%e^
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publicList getItems(){ yln.E vJjD
return items; E:OeU_\
} AtYYu
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publicvoid setItems(List items){ N^at{I6C
this.items = items; 4w[ta?&6B
} A+8b]t_k
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publicint getPageSize(){ ,Ou)F;r
return pageSize; KgSxF#
} !!>G{
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publicvoid setPageSize(int pageSize){ 1nmWL0
this.pageSize = pageSize; c:T P7"vG
} =Ji:nEl]z
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publicint getTotalCount(){ 6*Qpq7Ml
return totalCount; xb>+~5 9:
} r"{1H
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publicvoid setTotalCount(int totalCount){ mg]dK p
if(totalCount > 0){ J n/=v\K@
this.totalCount = totalCount; nVD
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int count = totalCount / 2uEu,YC
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pageSize; AG2jl/
if(totalCount % pageSize > 0) c5pG?jr+d
count++; w:v:znQrW
indexes = newint[count]; .ji%%f
for(int i = 0; i < count; i++){ j=4>In?x
indexes = pageSize * (1vS)v
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} _>I5Ud8(-
}else{ ]Hq%Q~cE
this.totalCount = 0; ".IhV<R
} .}s a2-
} _A*0K,F-
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publicint[] getIndexes(){ v<W++X7z
return indexes; \PJ89u0
} iL<O|' be
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publicvoid setIndexes(int[] indexes){ "?-s
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this.indexes = indexes; eH6cBX#P.
} cB^lSmu5
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publicint getStartIndex(){ g-36Q~`9v
return startIndex; )-gyDA
} u)-l+U.
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publicvoid setStartIndex(int startIndex){ Pipif.
if(totalCount <= 0) <LY+"
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this.startIndex = 0; /FY_LM
elseif(startIndex >= totalCount) T8LwDqio
this.startIndex = indexes F_`Gs8-VH
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[indexes.length - 1]; IT|CfQ [D
elseif(startIndex < 0) pP&~S<[
this.startIndex = 0; Lq.k?!D3uh
else{ |n;7fqK
this.startIndex = indexes 3(kZfH~
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[startIndex / pageSize]; `'`XB0vb
} #q%/~-Uk
} zF7T5Ge
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publicint getNextIndex(){ e6Y0G,K
int nextIndex = getStartIndex() + ]h6<o*
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pageSize; c9V'Z d#
if(nextIndex >= totalCount) {1[8,Ho
return getStartIndex(); %Ok.XBS)
else va\cE*,@ns
return nextIndex; PQ" Dl=,
} E),T,
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publicint getPreviousIndex(){ rE
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int previousIndex = getStartIndex() - O#g31?TO
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pageSize; QMP:}
if(previousIndex < 0) ?uQpt(
return0; lOZZ-
else I5{SC-7
return previousIndex; 7-)KTBFL
} ~<-i7uM
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抽象业务类 $|KbjpQ
java代码: 38F8(QU{
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/** >Uz3F7nHi
* Created on 2005-7-12 P:G^@B3^
*/ /KkUCq2A
package com.javaeye.common.business; A#}IbcZ|b
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import java.io.Serializable; 8Pq|jK "
import java.util.List; c;VW>&,B
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import org.hibernate.Criteria; o 0B`~7(
import org.hibernate.HibernateException; gO29:L[t
import org.hibernate.Session; /1YqDK0
import org.hibernate.criterion.DetachedCriteria; W>.qGK|l
import org.hibernate.criterion.Projections; UWz<~Vy
import F{v+z8nW
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org.springframework.orm.hibernate3.HibernateCallback; o&zeOJW
import #~"jo[
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org.springframework.orm.hibernate3.support.HibernateDaoS YIfbcR5
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upport; z ,vjY$t:/
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import com.javaeye.common.util.PaginationSupport; @>?&Mw\c
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public abstract class AbstractManager extends s<:J(gD
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HibernateDaoSupport {
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privateboolean cacheQueries = false; |X>:"?4t
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privateString queryCacheRegion; 8D-g%Aj-
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publicvoid setCacheQueries(boolean uXXwMc<p
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cacheQueries){ K:mb$YJ&
this.cacheQueries = cacheQueries; \%UA6uj
} JHcC}+H[
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publicvoid setQueryCacheRegion(String o`G@Je_}x
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queryCacheRegion){ rQU;?[y
this.queryCacheRegion = WlU5`NJl]2
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queryCacheRegion; Xr-eDUEi
} tcfUhSz,I
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publicvoid save(finalObject entity){ IYd)Vv3'j
getHibernateTemplate().save(entity); fN@2 B
} f5AK@]4G
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publicvoid persist(finalObject entity){ 13Q|p,^R
getHibernateTemplate().save(entity); ^$VOC>>9
} WL<Cj_N_{H
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publicvoid update(finalObject entity){ 2%QY~Ku~
getHibernateTemplate().update(entity); J?HYN%
} }{s<!b
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publicvoid delete(finalObject entity){ bEbnZ<kz*
getHibernateTemplate().delete(entity); m3 ,i{
} YoJN.],gf
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publicObject load(finalClass entity, qm2
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finalSerializable id){ V1M oW;&
return getHibernateTemplate().load k/Z}nz
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(entity, id); V#zDYrp
} n>{>3?
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publicObject get(finalClass entity, 72.ZE%Ue
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finalSerializable id){ w[t!?(![>
return getHibernateTemplate().get ):1NeJOFF
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(entity, id); s J,:[
} G}d@^9FkE
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publicList findAll(finalClass entity){ ;kY'DKL(
return getHibernateTemplate().find("from !>+YEZ"
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" + entity.getName()); 3DbS\jja
} S
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publicList findByNamedQuery(finalString ?Jio9Zr
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namedQuery){ WOiw 0
return getHibernateTemplate 1jpcoJ@s
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().findByNamedQuery(namedQuery); vzG(u_,9[
} ^<Q+=\h
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publicList findByNamedQuery(finalString query, Srg`Tt]
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finalObject parameter){ a2/!~X9F
return getHibernateTemplate g^/
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().findByNamedQuery(query, parameter); s0WI93+z
} %Sf%XNtu
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publicList findByNamedQuery(finalString query, 1)U%p
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finalObject[] parameters){ ?*){%eE
return getHibernateTemplate dX?8@uzu
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().findByNamedQuery(query, parameters); 8wMu^3r
} &N.D!7X
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publicList find(finalString query){ sE{A~{a`
return getHibernateTemplate().find {
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(query); >fNRwmi
} MIGcV9hf
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publicList find(finalString query, finalObject
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parameter){ `KgIr,Q)
return getHibernateTemplate().find ]lV\D8#
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(query, parameter); B@U;[cO&
} >,wm-4&E
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public PaginationSupport findPageByCriteria
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(final DetachedCriteria detachedCriteria){ ~`~mnlN
return findPageByCriteria z)*7LI
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); XR3=Y0YDf
} R-5EztmLae
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public PaginationSupport findPageByCriteria ;n0VF77>O
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(final DetachedCriteria detachedCriteria, finalint u2}zRC=
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startIndex){ qn=~4rg]R
return findPageByCriteria w_4/::K*
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(detachedCriteria, PaginationSupport.PAGESIZE, ~?`V$G=?,
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startIndex); fsRRnD
} <_(UAv
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public PaginationSupport findPageByCriteria 99)m d
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(final DetachedCriteria detachedCriteria, finalint W(.q.Sx>
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pageSize, %an"cQ
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finalint startIndex){ &Cv0oi&B
return(PaginationSupport) AM?62
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getHibernateTemplate().execute(new HibernateCallback(){ 2vbm=~)$F
publicObject doInHibernate 7S'3U}Y>VX
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(Session session)throws HibernateException { NFxs4:]
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Criteria criteria = ~
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