Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 q_[`PYT
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 4M+f#b1
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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 ^ (J%)&_\3
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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 ++ObsWZ
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分页支持类: f lt'~fe
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java代码: =\\rk,F
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package com.javaeye.common.util; Yq:/dpA_
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import java.util.List; x@:98P
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publicclass PaginationSupport { 9Vt6);cA-]
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publicfinalstaticint PAGESIZE = 30; -O?A"
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privateint pageSize = PAGESIZE; !>&G+R+k
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privateList items; a
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privateint totalCount; ^;?w<9Y
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privateint[] indexes = newint[0]; ETR7%0$r
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privateint startIndex = 0; dkSd
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public PaginationSupport(List items, int v[?gM.SF
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totalCount){ Urksj:N
setPageSize(PAGESIZE); nFro#qx
setTotalCount(totalCount); ucbtPTFYvr
setItems(items); 8
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setStartIndex(0); *Tmqs@L
} gLx?0eBBA
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public PaginationSupport(List items, int Oo
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totalCount, int startIndex){ - 8jlh
setPageSize(PAGESIZE); vi[~Qt
setTotalCount(totalCount); B =DV!oUg
setItems(items); .dvs&+I
setStartIndex(startIndex); R/6
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} PAVlZ}kj
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public PaginationSupport(List items, int ]n$ v ^
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totalCount, int pageSize, int startIndex){ h-o;vC9fC
setPageSize(pageSize); e"Z,!Q^-L
setTotalCount(totalCount); b'xBPTN
setItems(items); .RS
setStartIndex(startIndex); :73T9/
} U<'$ \P
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publicList getItems(){ ?pA_/wwp
return items; e`5:46k|
} =Hj3o_g-
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publicvoid setItems(List items){ 7'`nTF-@v
this.items = items; h}S2b@e|
} 4&6cDig7*2
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publicint getPageSize(){ -'i[/{
return pageSize; 6S(`Bw8h
} 5Iv"
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publicvoid setPageSize(int pageSize){ =E~_F>SD
this.pageSize = pageSize; *6v5JH&K
} cc"<H}g>`
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publicint getTotalCount(){ q@4Cw&AI+
return totalCount; FE06,i\{
} ~0vNs2D,S
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publicvoid setTotalCount(int totalCount){ )F0Q2P1I
if(totalCount > 0){ B\`${O(
this.totalCount = totalCount; cL"Ral-qB
int count = totalCount / paxZlA
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pageSize; TI8EW
if(totalCount % pageSize > 0) 0bGQO&s
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count++; C{6m?6
indexes = newint[count]; 2J`LZS
for(int i = 0; i < count; i++){ 2[KHmdgtB
indexes = pageSize * UZgrSX {
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} yT(86#st
}else{ hiWs:Yq
this.totalCount = 0; ZjnWbnW
} Z,F1n/7
} r&XxF>
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publicint[] getIndexes(){ **ls 4CE<
return indexes; 4&~*;an7
} I*(7(>zgyv
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publicvoid setIndexes(int[] indexes){ W7IAW7w8U
this.indexes = indexes; rE\&FVx
} *`tQX$F
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publicint getStartIndex(){ ^9|&w.:@Q
return startIndex; .GW)"`HbU
} eBe5H
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publicvoid setStartIndex(int startIndex){ TI7)yxa=`
if(totalCount <= 0) W'Qy4bl7C
this.startIndex = 0; S @)P#
elseif(startIndex >= totalCount) %@;xbKj
this.startIndex = indexes mQtOx
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[indexes.length - 1]; Btc[
elseif(startIndex < 0) "VAbUs
this.startIndex = 0; UD5f+,_;
else{ 6V1
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this.startIndex = indexes 2{L[D9c/6
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[startIndex / pageSize]; /j(<rz"j
} H]Gj$P=k
} hud'@O"R+
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publicint getNextIndex(){ 0fR?zT?
int nextIndex = getStartIndex() + D\sh
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pageSize; mpl^LF[
if(nextIndex >= totalCount) `P;uPQDzZ3
return getStartIndex(); [wUJ~~2#
else mS]soYTQ
return nextIndex; '_xa>T}
} }i\_`~
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publicint getPreviousIndex(){ r / L
int previousIndex = getStartIndex() - l{_1`rC'
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pageSize; kgRgHkAH~
if(previousIndex < 0) B 5va4@
return0; e?dR'*-z
else 6Kd,(DI
return previousIndex; .~4DlT
} QST-!`]v
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} it=ir9
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抽象业务类 pKk{Q0Rt
java代码: Dn;$4Dak(
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/** :D=y<n;S+
* Created on 2005-7-12 _ud!:q
*/ l' a<k"
package com.javaeye.common.business; F#7A6|
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import java.io.Serializable; ~ponYc.Y
import java.util.List; .BZ3>]F3<
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import org.hibernate.Criteria; qg8T}y>
import org.hibernate.HibernateException; XO4r rAYvW
import org.hibernate.Session; {hKf
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import org.hibernate.criterion.DetachedCriteria; 1${Cwb/F
import org.hibernate.criterion.Projections; " G0HsXi
import xA"7a
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org.springframework.orm.hibernate3.HibernateCallback; u_ym=N57`
import -r6LndQs
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org.springframework.orm.hibernate3.support.HibernateDaoS WR4 \dsgCU
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upport; 4B@L<Rl{\
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import com.javaeye.common.util.PaginationSupport; [Ma
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public abstract class AbstractManager extends Vu1X@@z
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HibernateDaoSupport { jX{t/8v/s4
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privateboolean cacheQueries = false; J"]P"`/
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privateString queryCacheRegion; $5#+;A'Q+
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publicvoid setCacheQueries(boolean LXcH<)
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cacheQueries){ n/-d56
this.cacheQueries = cacheQueries; ai(J%"D"
} _#6ekl|%
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publicvoid setQueryCacheRegion(String s4Z5t$0|
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queryCacheRegion){ % wS5m#n
this.queryCacheRegion = EU-=\Y
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queryCacheRegion; iMr/i?`i
} L&SlUXyt.c
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publicvoid save(finalObject entity){ Ue)8g#
getHibernateTemplate().save(entity); Z3
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} -+=+W
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publicvoid persist(finalObject entity){ @-Js)zcl q
getHibernateTemplate().save(entity); m>@ *-*8k
} O&u[^s/^
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publicvoid update(finalObject entity){ Z 2u5n`K
getHibernateTemplate().update(entity); 2kU=9W6ND
} Td>Lp=0rU
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publicvoid delete(finalObject entity){ ^8r4tX
getHibernateTemplate().delete(entity); !|gln)|A
} :svRn9_8H
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publicObject load(finalClass entity, !`%3?}mv,
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finalSerializable id){ C~dD'Tq]
return getHibernateTemplate().load i@}/KT
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(entity, id); !mLYW
} 5>'1[e45
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publicObject get(finalClass entity, J 4E G
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finalSerializable id){ 7+vyN^XJ"5
return getHibernateTemplate().get i-4pdK u
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(entity, id); REvY`
} qm1; ^j&