Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ?r+-
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ; XN{x
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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 -701j'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 Y6L~K?
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分页支持类: y(pks$
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java代码: #PQB(=299P
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package com.javaeye.common.util; Um-[~-
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import java.util.List; ~-J]W-n
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publicclass PaginationSupport { aL&7 1^R,
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publicfinalstaticint PAGESIZE = 30; I \[_9
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privateint pageSize = PAGESIZE; K;z7/[%
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privateList items; DOJ N2{IP
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privateint totalCount; 'd$P`Vw:
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privateint[] indexes = newint[0]; aV|hCN~
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privateint startIndex = 0; ,+xB$e
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public PaginationSupport(List items, int Ww%=1M]e-
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totalCount){ DLMM/WJg@
setPageSize(PAGESIZE); W=vP]x
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setTotalCount(totalCount); hB>oJC
setItems(items); ( _)jkI
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setStartIndex(0); 1@R
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} R:k5QD9/&p
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public PaginationSupport(List items, int $?<Z!*x
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totalCount, int startIndex){ DSk/q-'u
setPageSize(PAGESIZE); 4.=3M
setTotalCount(totalCount); S` ;?z
setItems(items); fM63+9I)\
setStartIndex(startIndex); 4?7W+/~<&
} ^,8)iV0j_
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public PaginationSupport(List items, int x+x40!+\
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totalCount, int pageSize, int startIndex){ $[&*Bj11Yg
setPageSize(pageSize); 7~aM=8r
setTotalCount(totalCount); #Xb+`'
setItems(items); !~&R"2/
setStartIndex(startIndex); Hp|_6hO 2
} fhp<oe>D
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publicList getItems(){ JSW}*HR
return items; ayD}r#7
} W"'iIh)z
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publicvoid setItems(List items){ NchXt6$i9
this.items = items; "xHg qgFyO
} "WK{ >T
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publicint getPageSize(){ ;b(p=\i
return pageSize; xA$nsZ]
} rZ^v?4Z\
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publicvoid setPageSize(int pageSize){ 0B@Jity#!
this.pageSize = pageSize; p2udm! )J
} <5jzl
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publicint getTotalCount(){ :WL'cJ9a
return totalCount; ),!;| bh
} ?Poq2
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publicvoid setTotalCount(int totalCount){ Ej>g.vp8I
if(totalCount > 0){ xz{IH,?IG
this.totalCount = totalCount; _Bp1co85MQ
int count = totalCount / .]7Qu;L
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pageSize; Y +\%
if(totalCount % pageSize > 0) P*Tx14xe4
count++; ~Oq +IA~9
indexes = newint[count];
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for(int i = 0; i < count; i++){ -!L"')
indexes = pageSize * y>|{YWbp?
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} A7`1-#
}else{ UaV iI/ks
this.totalCount = 0; M7+h(\H]2
} PF7&p~O(Z
} j"@93D~
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publicint[] getIndexes(){ qTo-pAG`
return indexes; t2iv(swTe
} JiU9CeD3
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publicvoid setIndexes(int[] indexes){ [j:[
this.indexes = indexes; -TOI c%
} (V% `k'N7f
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publicint getStartIndex(){ k8uvNLA)a
return startIndex; 5pRV3K{H
} 3#45m+D
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publicvoid setStartIndex(int startIndex){ "AhTH.ZP
if(totalCount <= 0) .ol'.t,S
this.startIndex = 0; H7kPM[
elseif(startIndex >= totalCount) R?EASc!b
this.startIndex = indexes I;?X f
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[indexes.length - 1]; (x$9~;<S*d
elseif(startIndex < 0) GzTq5uU&
this.startIndex = 0; EK$Kee}~
else{ `g1iCF
this.startIndex = indexes <x),,a=X
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[startIndex / pageSize]; |J~eLh[d
} UP{j5gR:_
} _ZAch zV
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publicint getNextIndex(){ N=)z
int nextIndex = getStartIndex() + M#@aB"@J>
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pageSize; uGl| pJ\y=
if(nextIndex >= totalCount) n!E2_
return getStartIndex(); ='E$-_
else Bz`yfl2
return nextIndex; -n? g~(/P
} <vbIp&
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publicint getPreviousIndex(){ b( ^^m:(w
int previousIndex = getStartIndex() - FCc=e{
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pageSize; 9%iFV
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if(previousIndex < 0) www`=)A;
return0; qYp$fmj
else k,Zm GllQ]
return previousIndex; 5H:@8,B
} - n6jG}01b
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} !=*.$4
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抽象业务类 DjW$?>
java代码: ;</Twm;:
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/** xnq><4
* Created on 2005-7-12 YbMssd2Yg
*/ u=qPzmywt
package com.javaeye.common.business; px9>:t[P
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import java.io.Serializable; s!6=|SS7
import java.util.List; 77:'I
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import org.hibernate.Criteria; X$wehMBX
import org.hibernate.HibernateException; '0+$ m=
import org.hibernate.Session; S@:B6](D$
import org.hibernate.criterion.DetachedCriteria; Wtv#h~jy9
import org.hibernate.criterion.Projections; `%E9xcD%
import GH3#E*t+[
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org.springframework.orm.hibernate3.HibernateCallback; GzdgL"M[
import u+% tPe
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org.springframework.orm.hibernate3.support.HibernateDaoS XS0V:<+,
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upport; *e<_; Kr?
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import com.javaeye.common.util.PaginationSupport; o?!uX|Fy
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public abstract class AbstractManager extends qB JRS'6'9
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HibernateDaoSupport { cjg=nTsBA
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privateboolean cacheQueries = false; VBx,iuaw
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privateString queryCacheRegion; B/Ba5z"r$
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publicvoid setCacheQueries(boolean >0T3'/k<H
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cacheQueries){ `D)S-7BR
this.cacheQueries = cacheQueries; Cj$H[K}>
} h>tsis'N9
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publicvoid setQueryCacheRegion(String .cw=*<zeg
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queryCacheRegion){ XaGz].Sv
this.queryCacheRegion = +UaO<L
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queryCacheRegion; u<q)SQ1
} nCB[4
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publicvoid save(finalObject entity){ dMgbW<uAu
getHibernateTemplate().save(entity); ={xqNRVd
} Wy,"cT
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publicvoid persist(finalObject entity){ 7 FIFSt
getHibernateTemplate().save(entity); dAwS<5!
} 'Ix5,^M}B
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publicvoid update(finalObject entity){ _6J<YQK
getHibernateTemplate().update(entity); _"v~"k 90^
} }9FD/
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publicvoid delete(finalObject entity){ j>V"hf
getHibernateTemplate().delete(entity); Cd9t{pQD4
} ,FS?"Ni
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publicObject load(finalClass entity, 7~lB}$L
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finalSerializable id){ &(WE]ziuO
return getHibernateTemplate().load qY# m*R
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(entity, id);
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} 8\P
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publicObject get(finalClass entity, cyDiA(ot&
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finalSerializable id){ D@2Ya/c
return getHibernateTemplate().get yi&?d&rK
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(entity, id); 1k0^6gE|
} M3)v-"
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publicList findAll(finalClass entity){ D1"1MUSod
return getHibernateTemplate().find("from X"laZd947>
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" + entity.getName()); cvn-*Sj
} U[blq
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publicList findByNamedQuery(finalString Qu!OV]Cc
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namedQuery){ #tCIuQ,
return getHibernateTemplate B'NS&7+].
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().findByNamedQuery(namedQuery); F%w\D9+P
} 6(!,H<bON
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publicList findByNamedQuery(finalString query, ^[k6]1h
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finalObject parameter){ V6A5(-%`y
return getHibernateTemplate x(exx
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().findByNamedQuery(query, parameter); { mK pD
} *Cc$eR]-
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publicList findByNamedQuery(finalString query, j 8~Gv=(h
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finalObject[] parameters){ * fOS"-CL
return getHibernateTemplate \JF57t}Zk
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().findByNamedQuery(query, parameters); #c8"
} 2b{@]Fp
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publicList find(finalString query){ >KH(nc$
return getHibernateTemplate().find Q*TQ*J7".X
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(query); s.k`];wo
} LNsE7t
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publicList find(finalString query, finalObject |\yDgs%EGy
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parameter){ 2/a04qA#
return getHibernateTemplate().find d1C/u@8^
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(query, parameter); &**.naSo
} m-&a~l
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public PaginationSupport findPageByCriteria 3l41r[\
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(final DetachedCriteria detachedCriteria){ KJ05Zx~uma
return findPageByCriteria "1pZzad
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); .5$V7t.t$\
} /Wta$!X{-
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public PaginationSupport findPageByCriteria 8?]%Qi
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(final DetachedCriteria detachedCriteria, finalint OHXeqjhy
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startIndex){ GO&R