Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 i.'"`pn_
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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 msxt'-$M
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 .v(GVkE}
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分页支持类: T^Ia^B-%}g
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java代码: .8W-,R4
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package com.javaeye.common.util; Y_Fn)(
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import java.util.List; PwW$=M{\.
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publicclass PaginationSupport { A:ts_*
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publicfinalstaticint PAGESIZE = 30; Mv%Qze,\V^
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privateint pageSize = PAGESIZE; sJx_X8
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privateList items; {[#)Q.2
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privateint totalCount; ;U>nj],uv
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privateint[] indexes = newint[0]; @]q^OMLY
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privateint startIndex = 0; zoi0Z
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public PaginationSupport(List items, int -XXsob}/8
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totalCount){ S[ !6Lw
setPageSize(PAGESIZE); Dx1(}D
setTotalCount(totalCount); x)=l4A\
setItems(items); Eo2`Vr9g
setStartIndex(0); )Mdddz4
} .iy>N/u
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public PaginationSupport(List items, int %JrZMs>
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totalCount, int startIndex){ f|VCi bI
setPageSize(PAGESIZE); Z@1kx3Wx$
setTotalCount(totalCount); d7](fw@c
setItems(items); [L2+k?
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setStartIndex(startIndex); 7P2n{zd,
} f$QkzWvr
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public PaginationSupport(List items, int n[0u&m8
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totalCount, int pageSize, int startIndex){ (
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setPageSize(pageSize); ymxA<bICS8
setTotalCount(totalCount); BW)-F (v
setItems(items); 1s(T#jh
setStartIndex(startIndex); g
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} xjr4')h
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publicList getItems(){ QNOdt 2NN
return items; jbipNgxkr
} `2]0 X#R
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publicvoid setItems(List items){ 0&sa#g2
this.items = items; d^A]]Xg
} H;4QuB'^
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publicint getPageSize(){ y:98}gW`n
return pageSize; AC1RP`c
} K7`6G[RMb
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publicvoid setPageSize(int pageSize){ DAb/B
this.pageSize = pageSize; r|UJJ9i
} 1l$C3c
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publicint getTotalCount(){ g8uqW1E^
return totalCount; =oI[E~1<
} z(LR!hr
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publicvoid setTotalCount(int totalCount){ OU UV8K
if(totalCount > 0){ "jyo'r
this.totalCount = totalCount; D<69xT,
int count = totalCount / 6}-No
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pageSize; Ur#jJR@%3
if(totalCount % pageSize > 0) +Mq\3
count++; P4Pc;8T@!
indexes = newint[count]; SM8N*WdiU
for(int i = 0; i < count; i++){ zEFS\nP}E
indexes = pageSize * ,e43m=KhK
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} *@' 'OyL
}else{ Mc.{I"c@
this.totalCount = 0; |gI>Sp%Fu
} pFS@yHs
} **%&|9He
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publicint[] getIndexes(){ ? Vd~
return indexes; ;Va(l$zD
} BS fmS(.
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publicvoid setIndexes(int[] indexes){ ,Suk_aX>
this.indexes = indexes; Axsezr/
} jKmjZz8L]%
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publicint getStartIndex(){ /al56n
return startIndex; ]]K?Q
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} x9>$197
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publicvoid setStartIndex(int startIndex){ a6n@
if(totalCount <= 0) >
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this.startIndex = 0; y!gPBkG&3n
elseif(startIndex >= totalCount) 1"Oe*@`pV
this.startIndex = indexes V8 8u-
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[indexes.length - 1]; n#x_da-m]
elseif(startIndex < 0) g7]S
this.startIndex = 0; pYQSn.`V~
else{ #aL.E(%
this.startIndex = indexes @/kI;8
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[startIndex / pageSize]; >`UqS`YQK
} dP_QkO
} Ag9GYm
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publicint getNextIndex(){ 6d]4
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int nextIndex = getStartIndex() + a%Q`R;W
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pageSize; ?h4[yp=w
if(nextIndex >= totalCount) ^WB[uFt-
return getStartIndex(); ,nYa+e
else ?I^$35
return nextIndex; .zZfP+Q]8
} P?V+<c{
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publicint getPreviousIndex(){ n~6$CQ5dF(
int previousIndex = getStartIndex() - *,G<X^
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pageSize; )8oyo~4?
if(previousIndex < 0) |iUF3s|?
return0; =? !FO'zt"
else (E0WZ$f}
return previousIndex; )q_,V"
} dY}5Kmt
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} U>*@VOgB
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抽象业务类 it H
java代码: @I4HpY7:
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/** d3rjj4N"z
* Created on 2005-7-12 E|;>!MMA;
*/ S*G^U1Sc+
package com.javaeye.common.business; E|9`J00
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import java.io.Serializable; gH(#<f@ZI
import java.util.List; uq]=L
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import org.hibernate.Criteria; +ZjDTTk
import org.hibernate.HibernateException; 25Z}.))
import org.hibernate.Session; W]Xwt'ABz
import org.hibernate.criterion.DetachedCriteria; %R4 \[e
import org.hibernate.criterion.Projections; DtBvfYO8)>
import HR?T
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org.springframework.orm.hibernate3.HibernateCallback; !q$VnqFk
import &w^9#L
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org.springframework.orm.hibernate3.support.HibernateDaoS vh.8m$,
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upport; Caj H;K\
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import com.javaeye.common.util.PaginationSupport; Hx+r9w
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public abstract class AbstractManager extends u^SInanw
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HibernateDaoSupport { W 3/]
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privateboolean cacheQueries = false; DC).p'0VL
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privateString queryCacheRegion; 6k@F?qHS
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publicvoid setCacheQueries(boolean '['%b
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cacheQueries){ nL^7t7mp
this.cacheQueries = cacheQueries; $'CS/U`E}
} r
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publicvoid setQueryCacheRegion(String 8cZ[Kl%
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queryCacheRegion){ F\&wFA'J
this.queryCacheRegion = N>EMVUVS
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queryCacheRegion; 0
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} u `w w
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publicvoid save(finalObject entity){ K+/wJ9^B
getHibernateTemplate().save(entity); fCu;n%
} U4dfO=
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publicvoid persist(finalObject entity){ MjQ>&fUK
getHibernateTemplate().save(entity); 6miXaAA8
} D@X"1X!F`G
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publicvoid update(finalObject entity){ -}xK>
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getHibernateTemplate().update(entity); y)|d`qC\
} N:64Gko"K
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publicvoid delete(finalObject entity){ u)EtEl7Wq
getHibernateTemplate().delete(entity); LR.]&(kyd
} &to~#.qc
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publicObject load(finalClass entity, 1h`F*:nva
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finalSerializable id){ KgYQxEbIW
return getHibernateTemplate().load 3bGU;2~}
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(entity, id); CEkf0%YJ
} _~1O #*|4
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publicObject get(finalClass entity, EpACd8Fb
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finalSerializable id){ IV1O/lGp
return getHibernateTemplate().get )Dv;,t
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(entity, id); j."V>p8u$
} &N7q9t
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publicList findAll(finalClass entity){ $bpu
return getHibernateTemplate().find("from >G?*rg4
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" + entity.getName()); 7a_u=\,
} SsMs#C8u%
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publicList findByNamedQuery(finalString &)q>Z!C-l
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namedQuery){ D?xR>Oo)
return getHibernateTemplate ?Nt m5(R
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().findByNamedQuery(namedQuery); EN^L.q9#
} `\z )EoI
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publicList findByNamedQuery(finalString query, yN[i6oe
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finalObject parameter){ w=nS*Qy2
return getHibernateTemplate ]GHw~s?
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().findByNamedQuery(query, parameter); s 64@<oU<"
} &