Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 )~>YH*g
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 9 hl_|r~%*
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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 .-zom~N-?
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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 Rq -ZL{LR7
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分页支持类: 5xiEPh
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java代码: KNl$3nX
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package com.javaeye.common.util; Eci\a]
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import java.util.List; }>\C{ClI
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publicclass PaginationSupport {
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publicfinalstaticint PAGESIZE = 30; " bG2:
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privateint pageSize = PAGESIZE; JF]JOI6.e
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privateList items; +@UV?"d
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privateint totalCount; (FV >m
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privateint[] indexes = newint[0]; hH.G#-JO
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privateint startIndex = 0; 4H/OBR
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public PaginationSupport(List items, int [g,}gyeS(
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totalCount){ *8q.YuZ
setPageSize(PAGESIZE); +ZYn? #IQ
setTotalCount(totalCount); !D6]JPX
setItems(items); P>T"cv
setStartIndex(0); NK+o1
} KvSG;
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public PaginationSupport(List items, int buC{r,
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totalCount, int startIndex){ x-c"%Z|
setPageSize(PAGESIZE); bt *k.=p
setTotalCount(totalCount); -j(6;9"7]|
setItems(items); _F{C\}
setStartIndex(startIndex); ~&O%N
} reVgqYp{{-
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public PaginationSupport(List items, int ?2a $*(
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totalCount, int pageSize, int startIndex){ =Qq+4F)MD
setPageSize(pageSize); BUFv|z+H
setTotalCount(totalCount); =a!=2VN9y
setItems(items); & kIFcd@
setStartIndex(startIndex); }u|q0>^8
} $]1=\I
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publicList getItems(){ $>gFf}#C
return items; E^PB)D(.
} 6@o*xK7L
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publicvoid setItems(List items){ QJNFA}*>
this.items = items; mOSv9w#,
} 4Hg9N}
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publicint getPageSize(){ ;<5q]/IHK
return pageSize; R]dg_Da
} d-m7}2c
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publicvoid setPageSize(int pageSize){ NI5``BwpO
this.pageSize = pageSize; n%-0V>
} E]6
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publicint getTotalCount(){ l%ZhA=TKQ
return totalCount; J1kM\8%b\
} IID5c"
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publicvoid setTotalCount(int totalCount){ 67TwPvh
if(totalCount > 0){ >/\'zi]L
this.totalCount = totalCount; Si,6o!0k
int count = totalCount / 'yth'[
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pageSize; $(9U @N9E
if(totalCount % pageSize > 0) !W0v >p
count++; A
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indexes = newint[count]; >7r!~+B"9'
for(int i = 0; i < count; i++){ l,:F
indexes = pageSize * X8|EHb<
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} K^$=dLp
}else{ ':W[ A
this.totalCount = 0; HDKbF/
} ] - .aL
} b[yiq$K/
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publicint[] getIndexes(){ 8Y3I0S
return indexes; y]imZ4{/
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publicvoid setIndexes(int[] indexes){ /bEAK-
this.indexes = indexes; G:JR7N$
} k8Xm n6X
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publicint getStartIndex(){ :LTN!jj
return startIndex; nm+s{
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publicvoid setStartIndex(int startIndex){ zJXplvaL;
if(totalCount <= 0) z=FZiH
this.startIndex = 0; .-=vx r
elseif(startIndex >= totalCount) Tr|JYLwF
this.startIndex = indexes *kVV+H<X|b
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[indexes.length - 1]; KgG4*<
elseif(startIndex < 0) 8_tQa^.n\
this.startIndex = 0; ':}\4j&{E
else{ .l|$dE/E
this.startIndex = indexes ExM,g' 7
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[startIndex / pageSize]; f-d1KNY
} |' .
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publicint getNextIndex(){ W`&hp6Jq
int nextIndex = getStartIndex() + \f)#>+X-
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pageSize; yBRC*0+Vy
if(nextIndex >= totalCount) m3ff;,
return getStartIndex(); {^'HL
else 4~=l}H>&
return nextIndex; 0ksa
} ?}7p"3j'z
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publicint getPreviousIndex(){ ;wVwX6:ZKr
int previousIndex = getStartIndex() - T Ge_G_'o
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pageSize; ? q&T$8zc4
if(previousIndex < 0) Gy)@Is9
return0; p#[.{
else {PmZ9
return previousIndex; aoTP[Bp
} tu?MY p;
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} rs.M]8a2{&
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抽象业务类 - YV>j
java代码: .mAjfP*
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/** ipILG4
* Created on 2005-7-12 5-G@L?~Vw
*/ j7c3(*Pl
package com.javaeye.common.business; L-\GHu~)
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import java.io.Serializable; Ru~j,|0r4
import java.util.List; d[35d J7F
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import org.hibernate.Criteria; Z/K{A`
import org.hibernate.HibernateException; N&pCx&
import org.hibernate.Session; NCx%L-GPi
import org.hibernate.criterion.DetachedCriteria; frQ{iUx
import org.hibernate.criterion.Projections; H.2QKws^F
import J$!iq|
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org.springframework.orm.hibernate3.HibernateCallback; @A5?3(e
import UDni]P!E
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org.springframework.orm.hibernate3.support.HibernateDaoS -(#iIgmP
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upport; gdoLyxQ
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import com.javaeye.common.util.PaginationSupport; 9K&:V(gmw
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public abstract class AbstractManager extends AK#1]i~
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HibernateDaoSupport { e$pV%5=
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privateboolean cacheQueries = false; * H9 8Du
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privateString queryCacheRegion; :h V7>
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publicvoid setCacheQueries(boolean )Beiu*
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cacheQueries){ 3&/Ixm:
this.cacheQueries = cacheQueries; Bw{I;rW{2
} -GgA&dh
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publicvoid setQueryCacheRegion(String h*Pc=/p
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queryCacheRegion){ ,iq4Iw
this.queryCacheRegion = #V}IvQl|
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queryCacheRegion; yOg+iFTr
} \j)E5b+
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publicvoid save(finalObject entity){ $j?1g#
getHibernateTemplate().save(entity); ~!3r&(
} PzR[KUK
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publicvoid persist(finalObject entity){ o+9j?|M
getHibernateTemplate().save(entity); xRsWI!d+|
} 6u}</>}
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publicvoid update(finalObject entity){ Z`BK/:vo3H
getHibernateTemplate().update(entity); %!L9)(}"
} Ib0ZjX6
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publicvoid delete(finalObject entity){ KK%M~Y+tU'
getHibernateTemplate().delete(entity); \B
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} )];K .zP
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publicObject load(finalClass entity, 0P(!j_2m
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finalSerializable id){ I)W`sBL
return getHibernateTemplate().load ^Va1f'g
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(entity, id); F*K_+
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} $DUZ!zaH!
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publicObject get(finalClass entity, &l[$*<P5V
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finalSerializable id){ -FCe:iY! A
return getHibernateTemplate().get !&Pui{F
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(entity, id); UOmY-\ &c
} Q?/o%`N
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publicList findAll(finalClass entity){ 63~
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return getHibernateTemplate().find("from m<g~H4
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" + entity.getName()); I15{)o(8$
} c\V7i#u[d;
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publicList findByNamedQuery(finalString FjI`uP
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namedQuery){ .q 3/_*
return getHibernateTemplate y<bDTeoo
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().findByNamedQuery(namedQuery); 7
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} lo!+f"7ym\
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publicList findByNamedQuery(finalString query, AjgF6[B
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finalObject parameter){ R+,u^;\
return getHibernateTemplate mju>>\9
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().findByNamedQuery(query, parameter); :TC@tM~Oy
} D+7Rz_=
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publicList findByNamedQuery(finalString query, qc~iQSI
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finalObject[] parameters){ !o[7wKrXb
return getHibernateTemplate d6sye^P
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().findByNamedQuery(query, parameters); VgC2+APg
} p`#R<K
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publicList find(finalString query){ Vr1<^Ib
return getHibernateTemplate().find e2W".+B1
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(query); H_<C!OgR
} f &wb
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publicList find(finalString query, finalObject Z@@K[$
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parameter){ yw3$2EW
return getHibernateTemplate().find XJ5.
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(query, parameter); m&?r%x
} A1?2*W
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public PaginationSupport findPageByCriteria TSWM
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(final DetachedCriteria detachedCriteria){ =-lb)Z"d
return findPageByCriteria u21EP[[,
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); tlp@?(u
} 3az&