Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 (ug^2WG
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 PLmf.hD \
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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 Z-D4~?Tv
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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 ;.<0ln V
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分页支持类: WKB8k-.]ww
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java代码: IfdgMELk
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package com.javaeye.common.util; f4TNy^-
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import java.util.List; `Ko6;s#
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publicclass PaginationSupport { Jm l4EW7
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publicfinalstaticint PAGESIZE = 30; k5%:L2FO
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privateint pageSize = PAGESIZE; 2X t$KF,?
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privateList items; C=z7Gk=
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privateint totalCount; [N-t6Z*
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privateint[] indexes = newint[0]; U[Pll~m2b
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privateint startIndex = 0; -`o22G3w
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public PaginationSupport(List items, int w9J^s<e
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totalCount){ xxlYn9ke
setPageSize(PAGESIZE); "$VqOSo
setTotalCount(totalCount); _m+64qG_8'
setItems(items); BrQXSN$i
setStartIndex(0); 6H\apgHm
} X~ AE??
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public PaginationSupport(List items, int 1~HR;cTv=
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totalCount, int startIndex){ J,bE[52
setPageSize(PAGESIZE); Gg3cY{7
setTotalCount(totalCount); ~HH#aXh*
setItems(items); n2JwZ?
setStartIndex(startIndex); uD2v6x236
} Ris5)*7
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public PaginationSupport(List items, int QQ5G?E
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totalCount, int pageSize, int startIndex){ $RYsqX\v
setPageSize(pageSize); CqRG !J
setTotalCount(totalCount); BN?OvQ
setItems(items); ?>_[hZ
setStartIndex(startIndex); WzC_M>_
} 0pSqk/
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publicList getItems(){ %b
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return items; KKz{a{ePY%
} j5,vSh~q;'
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publicvoid setItems(List items){ q5irKT*Hs
this.items = items; wi]F\ q"Y^
} :CQ-?mT^LA
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publicint getPageSize(){ W+&w'~M
return pageSize; ~
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} eJ+uP,$
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publicvoid setPageSize(int pageSize){ b-1cA1#_cP
this.pageSize = pageSize; !NNq( t
} dJZMzn
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publicint getTotalCount(){ eRK
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return totalCount; [,Io!O
} MVGznf?
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publicvoid setTotalCount(int totalCount){ VPB,8zb]
if(totalCount > 0){ bN6FhKg|
this.totalCount = totalCount; cI9} YSk
int count = totalCount / ~v2E<S3
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pageSize; ^MyuD?va
if(totalCount % pageSize > 0) qeK_w
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count++; V Q6&7@
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indexes = newint[count]; <$^76=x,8P
for(int i = 0; i < count; i++){ z*cC2+R}=
indexes = pageSize * p*T`fOL
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} *Txt`z[|
}else{ 9Ytf7NpR
this.totalCount = 0; 8\+Q*7~@i
} bp06xHMu
} ohFUy}y
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publicint[] getIndexes(){ i )Hjmf3
return indexes; $nB4Ie!WcR
} y{.s
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publicvoid setIndexes(int[] indexes){ Jl-Lz03YG
this.indexes = indexes; w&eX)!
} vjy 59m
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publicint getStartIndex(){ 3x=f}SO&
return startIndex; <+1d'VQ2
} 3|=9aM^ x^
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publicvoid setStartIndex(int startIndex){ nM+(
if(totalCount <= 0) wic&
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this.startIndex = 0; }n+#o!uEf
elseif(startIndex >= totalCount) 6]=$c<.&
this.startIndex = indexes ^:.=S`,^
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[indexes.length - 1]; n o*p`a
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elseif(startIndex < 0) T+_pm DDN
this.startIndex = 0; STDT]3.
else{ '!)|;qe
this.startIndex = indexes Jww LAQ5
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[startIndex / pageSize]; _S4 3_hW
} _b+=q:$/
} j Y>BU&
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publicint getNextIndex(){ UN7>c0B
int nextIndex = getStartIndex() + "r6DZi(^K
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pageSize; ?U~9d"2=
if(nextIndex >= totalCount) <P)vx
return getStartIndex(); #$&!)13
else lx8@;9fLy
return nextIndex; iez@j
} xn49[T
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publicint getPreviousIndex(){ c$.h]&~dN
int previousIndex = getStartIndex() - H pHXt78
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pageSize; VCzmTnD
if(previousIndex < 0) EgAM,\
return0; W0n/B&C
else o ]UG*2
return previousIndex; |p"P+"#
}
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} d4Y8q1
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抽象业务类 1wX0x.4d
java代码: FL}k0
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/** P4xQ:$2!
* Created on 2005-7-12 Uq0GbLjv"
*/ qJ).;S{AAt
package com.javaeye.common.business; |{ E\ 2U
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import java.io.Serializable; ys+ AY^/
import java.util.List; GCn^+`.h1t
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import org.hibernate.Criteria; 1]wx Ru
import org.hibernate.HibernateException; ?[n{M
import org.hibernate.Session; "pdq_35
import org.hibernate.criterion.DetachedCriteria; W,<P])
import org.hibernate.criterion.Projections; Q;]g9T[)
import xZJ
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org.springframework.orm.hibernate3.HibernateCallback; W`}C0[%VW
import @D<q=:k
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org.springframework.orm.hibernate3.support.HibernateDaoS S+03aJNN#
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upport; iNn]~L1
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import com.javaeye.common.util.PaginationSupport; ?}y{tav=
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public abstract class AbstractManager extends g`6_Ao8
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HibernateDaoSupport { qDR`)hle
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privateboolean cacheQueries = false; Ij +
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privateString queryCacheRegion; "I"(yiKD
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publicvoid setCacheQueries(boolean )sWC5\
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cacheQueries){ E^uWlUb{
this.cacheQueries = cacheQueries; 7M~w05tPh
} 5(@P1Bi
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publicvoid setQueryCacheRegion(String "i+fO&LpZ
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queryCacheRegion){ 9$-V/7@)
this.queryCacheRegion = DOi\DJV!
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queryCacheRegion; 4a'GWzUtS
} W0vdU;?%
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publicvoid save(finalObject entity){ ^a=,,6T
getHibernateTemplate().save(entity); $ b Q4[
} ^rz8c+ly
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