Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 8{&.[SC7
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 p]s)Xys
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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 66MUrNW
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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 NSzTl-eS
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分页支持类: GJ?J6@|
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java代码: 6 pQo_l}
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package com.javaeye.common.util; AOqL&z
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import java.util.List; Lo)T
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publicclass PaginationSupport { PyQ\O*
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publicfinalstaticint PAGESIZE = 30; c[vFh0s"m
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privateint pageSize = PAGESIZE; v(uNqX.BC
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privateList items; !,J]5$M
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privateint totalCount; urL@SeV+$
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privateint[] indexes = newint[0]; :[C|3KKe"
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privateint startIndex = 0; }4,[oD
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public PaginationSupport(List items, int SapVS*yx@
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totalCount){ cwHbm%
setPageSize(PAGESIZE); :pvVm>
setTotalCount(totalCount); cI@'Pr4:FJ
setItems(items); f$?`50D"1
setStartIndex(0); e?GzvM'2
} ^>fr+3a"P
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public PaginationSupport(List items, int eQfXUpk3@I
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totalCount, int startIndex){ y"_rDj`
setPageSize(PAGESIZE); O^3XhTW^\~
setTotalCount(totalCount); w`/~y
setItems(items); szOa yAS
setStartIndex(startIndex); g`6I, 6G
} *~UK5Brf1
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public PaginationSupport(List items, int 16~5 ;u
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totalCount, int pageSize, int startIndex){ Q:ql~qew
setPageSize(pageSize); TyR@3H
setTotalCount(totalCount); & TN.6Hm3
setItems(items); $/E{3aT@F2
setStartIndex(startIndex); b>}
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} i\K88B&24
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publicList getItems(){ Yqt~h
return items; Yic4|N?u
} Gy'/)}}Z
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publicvoid setItems(List items){ =6qSo
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this.items = items; {Q^ -
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publicint getPageSize(){ sei%QE]!/
return pageSize; [E9_ZdBT
} cNy*< Tv
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publicvoid setPageSize(int pageSize){ oRmA\R*
this.pageSize = pageSize; GIS,EwA
} _( QW2m?K
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publicint getTotalCount(){ ^*,?x
return totalCount; J8&0l&~6
} EgOiJH
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publicvoid setTotalCount(int totalCount){ }fhGofN$e
if(totalCount > 0){ h~=~csya:
this.totalCount = totalCount; :p$Q3
int count = totalCount / y
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pageSize; SU. $bsu
if(totalCount % pageSize > 0) s}4k^NGFJ
count++; +4[Je$qYa
indexes = newint[count]; 0.U-
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for(int i = 0; i < count; i++){ (J
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indexes = pageSize * Z v 7}C
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} @|d`n\%x
}else{ IL%P\Zs
this.totalCount = 0; l%
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} e,*@+E\4
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publicint[] getIndexes(){ %)o;2&aD
return indexes; LP?*RrM
} z
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publicvoid setIndexes(int[] indexes){ N1l^%Yf J
this.indexes = indexes; }~v0o#
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} NU3s^ 8\(
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publicint getStartIndex(){ A%EGu4
return startIndex; ;a(7%
} w!Ii
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publicvoid setStartIndex(int startIndex){ J
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if(totalCount <= 0) 5RKs2eV
this.startIndex = 0; .6iJ:A6T
elseif(startIndex >= totalCount) P#,g5
this.startIndex = indexes 80LN(0?x
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[indexes.length - 1]; EB
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elseif(startIndex < 0) 2=n,{rkmj%
this.startIndex = 0; $N4i)>&T2
else{ cM=_i{c
this.startIndex = indexes TTSq }sb}
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[startIndex / pageSize]; 4B-+DH>{6
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publicint getNextIndex(){ 6^z):d#u
int nextIndex = getStartIndex() + xv_Z$&9e>l
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pageSize; 8@KGc
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if(nextIndex >= totalCount)
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return getStartIndex(); YcM0A~<
else m3`J9f,c/
return nextIndex; y6>fK@K~
} ~@D{&7@
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publicint getPreviousIndex(){ z+j3j2
int previousIndex = getStartIndex() - 7C~g?1
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pageSize; [h0)V(1KR
if(previousIndex < 0) n-CFB:L
return0; /,+&O#SX
else stq%Eg?
return previousIndex; o^x,JT
} ^:ehG9
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} uh3<%9#\k
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抽象业务类 T{*!.+E
java代码: PLK;y
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/** O/fm/
* Created on 2005-7-12 ]mx1djNA
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package com.javaeye.common.business; v@qVT'qlU
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import java.io.Serializable; x#'v}(v
import java.util.List; G@,XUP
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import org.hibernate.Criteria; Ym9~/'%]
import org.hibernate.HibernateException; _[y<u})
import org.hibernate.Session; IGI$,C
import org.hibernate.criterion.DetachedCriteria; :\|<7n
import org.hibernate.criterion.Projections; y~py+:_
import <p#+('N`
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org.springframework.orm.hibernate3.HibernateCallback; B{7hRk.5!
import W>E|Iv[o
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org.springframework.orm.hibernate3.support.HibernateDaoS 3d(:Y6D)
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upport; ?rQIUP{D7
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import com.javaeye.common.util.PaginationSupport; +3r4GEa
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public abstract class AbstractManager extends 6f;20dn6
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HibernateDaoSupport { KH9D},
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privateboolean cacheQueries = false; )_1;mc8B
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privateString queryCacheRegion; %kV #UzL
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publicvoid setCacheQueries(boolean = Tq\Ag:
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cacheQueries){ ;~n^/D2.
this.cacheQueries = cacheQueries; nRheByYm
} vFi+ExBU
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publicvoid setQueryCacheRegion(String mN1n/LNi
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queryCacheRegion){ hfRxZ>O2
this.queryCacheRegion = 0!q@b
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queryCacheRegion; IkgRZ{Y
} x\K,@
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publicvoid save(finalObject entity){ dg@'5.ApPu
getHibernateTemplate().save(entity); Ypx"<CKP}
} 4.q^r]m*
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publicvoid persist(finalObject entity){ noO#o+
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getHibernateTemplate().save(entity); )^j62uv
} >ui;B$=
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publicvoid update(finalObject entity){ Tvd: P^C
getHibernateTemplate().update(entity); oGz5ZDa#
} Pk&sY'
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publicvoid delete(finalObject entity){ m[Cp
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getHibernateTemplate().delete(entity); f^G-ba
} \ 9#X]H
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publicObject load(finalClass entity, [s~6,wz
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finalSerializable id){ TECp!`)j"
return getHibernateTemplate().load |eP5iy wg
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publicObject get(finalClass entity, aJ
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finalSerializable id){ 4,?WNPqo
return getHibernateTemplate().get
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(entity, id); !>)o&sM
} PyM59v
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publicList findAll(finalClass entity){ tiF-lq
return getHibernateTemplate().find("from ?{wD%58^oG
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} YZ6"
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publicList findByNamedQuery(finalString Xx ou1l!
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namedQuery){ zB'_YwW
return getHibernateTemplate yBfX4aH:`
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} cue aOtD
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publicList findByNamedQuery(finalString query, nRs:^Q~o
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finalObject parameter){ aq- |
return getHibernateTemplate x pBQ(6Y
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().findByNamedQuery(query, parameter); |cL,$G
} )Kq@ m1>@
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publicList findByNamedQuery(finalString query, OtoG,~?
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finalObject[] parameters){ oObQN;A@6
return getHibernateTemplate )&qr2Cm*
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