Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 WfRXP^a
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 0IWf!Sk
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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 |V7*l1
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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 5E
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分页支持类: EBmt9S
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java代码: 4`=mu}Y2
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package com.javaeye.common.util; r@,2E6xn
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import java.util.List; {f p[BF
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publicclass PaginationSupport { S`]k>'
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publicfinalstaticint PAGESIZE = 30; J|rq*XD}q
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privateint pageSize = PAGESIZE; lk80#( :Z
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privateList items; rQ snhv
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privateint totalCount; '/%H3A#L
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privateint[] indexes = newint[0]; Mrb)
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privateint startIndex = 0; S$XSei_q
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public PaginationSupport(List items, int |! "eWTJ
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totalCount){ IO:G1;[/2L
setPageSize(PAGESIZE); #A8sLkY
setTotalCount(totalCount); Fv`,3aNB
setItems(items); ""~ajy
setStartIndex(0); `5Zz5V
} C+&l<
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public PaginationSupport(List items, int El"Q'(:/U
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totalCount, int startIndex){ b5n'=doR/I
setPageSize(PAGESIZE); )@bQu~Y
setTotalCount(totalCount); kylVH!
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setItems(items); %D "I
setStartIndex(startIndex); 9(wK@
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public PaginationSupport(List items, int ufT`"i
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totalCount, int pageSize, int startIndex){ ^K@C"j?M/
setPageSize(pageSize); D.XvG _
setTotalCount(totalCount); )w%!{hn
setItems(items); u\JNr}bL
setStartIndex(startIndex); K",N!koj
} 5l*&>C[(i
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publicList getItems(){ VY\&8n}e(
return items; N ZSSg2TX#
} V3j= Kf
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publicvoid setItems(List items){ h 9W^[6
this.items = items; '2^Q1{ :\
} 'uEl~> l7
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publicint getPageSize(){ $E.I84UfX
return pageSize; pyvSwD5t
} cExS7~*
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publicvoid setPageSize(int pageSize){ -3Vx76Y
this.pageSize = pageSize; wD)XjX
} #;nYg?d=
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publicint getTotalCount(){
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return totalCount; [ibu/W$
} &.?'i1!
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publicvoid setTotalCount(int totalCount){ w`zTR0`
if(totalCount > 0){ C~iL3Cb
this.totalCount = totalCount; @sC`!Rmy'-
int count = totalCount / kW&TJP+5*
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pageSize; ?(i{y~
if(totalCount % pageSize > 0) 3/n5#&c\4
count++; ?.;c$'
indexes = newint[count]; ) hfpwdQ
for(int i = 0; i < count; i++){ 6,{$J
indexes = pageSize * ~IN>3\j
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} #4 pB@_
}else{ B_m8{44zM
this.totalCount = 0; ^ (zYzd
} ikiypWq
} 7O-x<P;
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publicint[] getIndexes(){ @2 fg~2M1
return indexes; 03 #lX(MB
} 0.k7oB;f(@
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publicvoid setIndexes(int[] indexes){ HRfYl,S,
this.indexes = indexes; u5f9Jw}
} UrEs4R1#
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publicint getStartIndex(){ 6G""I]uT
return startIndex; 338k?nHxv
} _^%,x
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publicvoid setStartIndex(int startIndex){ q6V>zi
if(totalCount <= 0) CdjI`
this.startIndex = 0; ZeaA%y67U
elseif(startIndex >= totalCount) 6zuTQ^pz
this.startIndex = indexes [%1CRk
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[indexes.length - 1]; +*/Zu`kzX
elseif(startIndex < 0) }*pi<s
this.startIndex = 0; K/yxE|w<
else{
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this.startIndex = indexes K} X&AJ5A
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[startIndex / pageSize]; -Cc^d!::
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publicint getNextIndex(){ 6)
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int nextIndex = getStartIndex() + l L@XM2"
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pageSize; O:{~urV
if(nextIndex >= totalCount) !Pfr,a
return getStartIndex(); YHygo#4=8
else uGK.\PB$
return nextIndex; 6HWE~`ok6
} ytJ/g/,A0i
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publicint getPreviousIndex(){
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int previousIndex = getStartIndex() - yg=q;Z>[~
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pageSize; 9x9 T<cx
if(previousIndex < 0) >7T'OC
return0; l'E*=Rn
else ! Y~FLA_
return previousIndex; }?_?V&K|
} 0{p#j~ZhC
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} (Y? gn)*t
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抽象业务类 Ma']?Rb`
java代码: Eib5
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/** n&qg;TT
* Created on 2005-7-12 s %``H`
*/ CMG&7(MR
package com.javaeye.common.business; )|R)Q6UJ
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import java.io.Serializable; U!?_W=?
import java.util.List; ;dtA4:IRZ4
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import org.hibernate.Criteria; H.|#c^I
import org.hibernate.HibernateException; m_?~OL S
import org.hibernate.Session; PI:4m%[
import org.hibernate.criterion.DetachedCriteria; (pCrmyB
import org.hibernate.criterion.Projections; ):6 8%,
import ~IfJwBn-i
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org.springframework.orm.hibernate3.HibernateCallback; ~"&|W'he[
import pnowy;
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org.springframework.orm.hibernate3.support.HibernateDaoS d *|Y
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upport; ^w@%cVh
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import com.javaeye.common.util.PaginationSupport; DJXmGt]
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public abstract class AbstractManager extends 2G67NC?+
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HibernateDaoSupport { Jr
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privateboolean cacheQueries = false; 7$vYo
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privateString queryCacheRegion; Yq0| J
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publicvoid setCacheQueries(boolean hl7bzKO*w
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cacheQueries){ b8`)y<