Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 il(dVW
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 QeuIAs* _
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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 th}Q`vg0
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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 r?{tu82#i
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分页支持类: .S>:-j'u
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java代码: .E-)R
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package com.javaeye.common.util; I,OEor6%R(
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import java.util.List; _5 Zhv-7
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publicclass PaginationSupport { -.~Dhk
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publicfinalstaticint PAGESIZE = 30; N2[EdOJT_
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privateint pageSize = PAGESIZE; I&^B?"Y
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privateList items; *^e06xc:
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privateint totalCount; owHhlS{
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privateint[] indexes = newint[0]; $Zf hQ5bat
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privateint startIndex = 0; }wJ-*By{+
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public PaginationSupport(List items, int `./$hh
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totalCount){ &~Qi+b0!
setPageSize(PAGESIZE); #\U;,r
setTotalCount(totalCount); ANh7`AUuO
setItems(items); e=S51q_0
setStartIndex(0); N) D;)ZH
} qP=4D
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public PaginationSupport(List items, int V`Ve__5;
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totalCount, int startIndex){ 3.,O7 k7y
setPageSize(PAGESIZE); AG/?LPJ
setTotalCount(totalCount); K'z|a{ru.{
setItems(items); g*t(%;_m
setStartIndex(startIndex); B=?4; l7
} !@j5 yYf
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public PaginationSupport(List items, int |]FJfMX
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totalCount, int pageSize, int startIndex){ 92zo+bc
setPageSize(pageSize); =To}yJ#
setTotalCount(totalCount); *Xm$w
setItems(items); t*X
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setStartIndex(startIndex); G1K72M}CW
} L9L!V"So1k
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publicList getItems(){ <*I%U]
return items; }?^V9K-
} n
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publicvoid setItems(List items){ ;oL`fQyr
this.items = items; Z:51Q
} Lckb*/jV&
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publicint getPageSize(){ wCT. (d_
return pageSize; gr]:u4}
} u!wR
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publicvoid setPageSize(int pageSize){ GI:J9TS
this.pageSize = pageSize; 19V
} +\r=/""DW
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publicint getTotalCount(){ 2|Of$oMc
return totalCount; @JFfyQ {-
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publicvoid setTotalCount(int totalCount){ c-1Hxd YD
if(totalCount > 0){ kY e3A&J
this.totalCount = totalCount; c& &^Do
int count = totalCount / mBb;:-5
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pageSize; 53vnON#{*
if(totalCount % pageSize > 0) a g=,oYn
count++; R1CoS6
indexes = newint[count]; bU3e*Er
for(int i = 0; i < count; i++){ e15_$M;RW
indexes = pageSize * iA=QK
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} ?ykQ]r6a<
}else{ x d9+P
this.totalCount = 0; _tl
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} 2;!,:bFb
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publicint[] getIndexes(){ }@+3QHwYU
return indexes; n+ot. -
} :[hZn/
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publicvoid setIndexes(int[] indexes){ U^AywE]
this.indexes = indexes; BYhF?
} H]^hEQ3DT
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publicint getStartIndex(){ LIm{Y`XU
return startIndex; H>zX8qP+
} U-b(
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publicvoid setStartIndex(int startIndex){ r4X0.
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if(totalCount <= 0) 7yUtG^'b
this.startIndex = 0; 4Lg!54P8
elseif(startIndex >= totalCount) df85g
this.startIndex = indexes pfs'2AFj
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[indexes.length - 1]; +-s$Htx
elseif(startIndex < 0) E:_m6
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this.startIndex = 0; 0@O:C::
else{ ][gr(-6 8
this.startIndex = indexes ()Tl\
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[startIndex / pageSize]; PG51+#
} _m?TEqB
} ?h$
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publicint getNextIndex(){ [WfigqY`b*
int nextIndex = getStartIndex() + %ZKP d8
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pageSize; 7I#<w[l>k
if(nextIndex >= totalCount) 6h?v/\
return getStartIndex(); B IW?/^
else lR<1x
return nextIndex; ?3duW$`
} oJ:\8>)9
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publicint getPreviousIndex(){ 6d# 7
int previousIndex = getStartIndex() - ?"+g6II
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pageSize; dE_d.[!
if(previousIndex < 0) 7o99@K,
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else z1AYXW6F
return previousIndex; @5=2+ M
} T4c]VWtD
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} #Wf9`
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抽象业务类 `[(.Q
java代码: qQ{i2D%)?f
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/** [YTOrN
* Created on 2005-7-12 ]lgI Q;r
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package com.javaeye.common.business; myvn@OsEw
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import java.io.Serializable; @p\te7(P%
import java.util.List; ,|7!/]0&
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import org.hibernate.Criteria; CKuf'h#
import org.hibernate.HibernateException; c_N'S_)~7Q
import org.hibernate.Session; dBeZx1Dy
import org.hibernate.criterion.DetachedCriteria; u,88V@^
import org.hibernate.criterion.Projections; .B? J@,
import >39\u&)
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org.springframework.orm.hibernate3.HibernateCallback; AnW72|=A(
import U 6`E\?d`
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org.springframework.orm.hibernate3.support.HibernateDaoS |9;MP&68
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upport; !C>'a:
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import com.javaeye.common.util.PaginationSupport; LEgx"H=c
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public abstract class AbstractManager extends hAvX{]
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HibernateDaoSupport { lD]/Kx
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privateboolean cacheQueries = false; T/YvCbo
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privateString queryCacheRegion; g-O}e4
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publicvoid setCacheQueries(boolean F8En)#
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cacheQueries){ Rct=vDU
this.cacheQueries = cacheQueries; ?]Wg{\NC6
} T!3_Q/~^r
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publicvoid setQueryCacheRegion(String ,2/y(JX}*!
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queryCacheRegion){ "<^]d~a_
this.queryCacheRegion = AriW&E
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queryCacheRegion; -A3>+G3[
} NkYU3[m$v
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publicvoid save(finalObject entity){ p(`?y:.3
getHibernateTemplate().save(entity); mq!_/3
} g0M9v]c
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publicvoid persist(finalObject entity){ etD8S KD
getHibernateTemplate().save(entity); NUjo5.7
} ??g `c=R!V
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publicvoid update(finalObject entity){ Smjg[
getHibernateTemplate().update(entity); *E1 v
} /GDGE }
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publicvoid delete(finalObject entity){ +~] :oj
getHibernateTemplate().delete(entity); "<LVA2v;
} f6O5k8n
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publicObject load(finalClass entity, X GhV?
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finalSerializable id){ MDqUl:]
return getHibernateTemplate().load gyx4= 'Q
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(entity, id); tMQz'3,X
} IP
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publicObject get(finalClass entity, r|!r!V8j
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finalSerializable id){ F>!gwmn~
return getHibernateTemplate().get H6Qb]H.C
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publicList findAll(finalClass entity){ }?vVJm'
return getHibernateTemplate().find("from v?S~ =$.
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" + entity.getName()); YR$)yl
} -'jPue2\
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publicList findByNamedQuery(finalString cHO8%xu`
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namedQuery){ =O?#>3A}
return getHibernateTemplate tq^d1b(j4
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().findByNamedQuery(namedQuery); 5|^{t00T~
} ['l.]k-b}
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publicList findByNamedQuery(finalString query, :a#pzEK
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finalObject parameter){ !R/-|Kjy
return getHibernateTemplate Zagj1OV|
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().findByNamedQuery(query, parameter); nR()ei^X
} `AO<r
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publicList findByNamedQuery(finalString query, Z;XiA<|
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finalObject[] parameters){ D" 4*&
return getHibernateTemplate #ErIot
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().findByNamedQuery(query, parameters); +uY)MExs2
} nHB=*Mj DV
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publicList find(finalString query){ ydyGPZt
return getHibernateTemplate().find ctzaqsr
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(query); ^ld?v
} YsHZFF
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publicList find(finalString query, finalObject 22<T.c
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parameter){ {_]'EK/w
return getHibernateTemplate().find $YM6}D@
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(query, parameter); P=j89-e
} :Gdfpz-{?
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public PaginationSupport findPageByCriteria ~
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(final DetachedCriteria detachedCriteria){ N~%F/`Z<+
return findPageByCriteria SgOn:xg;3L
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); +6xEz67A<
}
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public PaginationSupport findPageByCriteria ![v@+9
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(final DetachedCriteria detachedCriteria, finalint _TRO2p0
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startIndex){ @Ik@1
return findPageByCriteria H@uCbT
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(detachedCriteria, PaginationSupport.PAGESIZE, ,AC+s"VS
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startIndex); 2#n4t2p
} 39W6"^q"o
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public PaginationSupport findPageByCriteria }<EA)se"
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(final DetachedCriteria detachedCriteria, finalint WheJ 7~
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pageSize, Lmy ^/P%
finalint startIndex){ {I!sXj
return(PaginationSupport) 8q6b3q:c
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