Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 =Ov;'MC
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 cAsSN.HFS
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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 uJ)\P
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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 $h|I7`
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分页支持类: M rH%hRV6R
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java代码: ATXx?
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package com.javaeye.common.util; (Ay4B*|!
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import java.util.List; nCSd:1DY
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publicclass PaginationSupport { @Z=y'yc'y.
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publicfinalstaticint PAGESIZE = 30; =E6i1x%j
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privateint pageSize = PAGESIZE; n_!]B_Vd$
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privateList items; RL]lt0O{
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privateint totalCount; 644hQW&W
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privateint[] indexes = newint[0]; 0F;(_2V-
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privateint startIndex = 0; |]]pHC_/W
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public PaginationSupport(List items, int XM5;AcD
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totalCount){ 'mY,>#sT
setPageSize(PAGESIZE); aBA#\eV
setTotalCount(totalCount); e&a[k
setItems(items); \ /X!tlwxh
setStartIndex(0); :0TSOT9.
} ?` ZGM
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public PaginationSupport(List items, int o4I!VK(C#s
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totalCount, int startIndex){ w\8rh\Mvh
setPageSize(PAGESIZE); $xn%i\
setTotalCount(totalCount); XtH_+W+O
setItems(items); 5KPPZmO
setStartIndex(startIndex); !A^w6Q;`V
} F#37Qv
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public PaginationSupport(List items, int |~"A:gf
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totalCount, int pageSize, int startIndex){ Jv{"R!e"P
setPageSize(pageSize); Qmc;s{-r;
setTotalCount(totalCount); ([XyW{=h!
setItems(items); G>{:D'#
setStartIndex(startIndex); <n2{+eO
} fOjt` ~ToI
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publicList getItems(){ (LvOsr~
return items; n~>CE"q
} [@?.}!
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publicvoid setItems(List items){ eRqexqO!
this.items = items; uB&I56
} Cq;K,B9
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publicint getPageSize(){ '*{Rn7B5
return pageSize; MVU'GHv
} %<*pM@
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publicvoid setPageSize(int pageSize){ wTuRo
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this.pageSize = pageSize; RknSWuFKt
} X|lmH{kf
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publicint getTotalCount(){ 8 P y_Y>
return totalCount; Fu$Gl$qV?%
} 5}^08Xl
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publicvoid setTotalCount(int totalCount){ n)7$xYuH
if(totalCount > 0){ D'hr\C^
this.totalCount = totalCount; RuEnr7gi
int count = totalCount / ^WYG?/{4
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pageSize; hr"+0KeX
if(totalCount % pageSize > 0) 3K]0sr
count++; <yaw9k+P
indexes = newint[count]; +A3\Hj&W
for(int i = 0; i < count; i++){ f6A['<%o
indexes = pageSize * ZaV66Y>
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} iK0J{'
}else{ [*E.G~IS`
this.totalCount = 0; BQmafpp`
} Pb&+(j
} gG> ^h1_o~
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publicint[] getIndexes(){ 1ORi]`
return indexes; 5Kxk9{\8
} 6? ly.h$
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publicvoid setIndexes(int[] indexes){ d(tf: @
this.indexes = indexes; ~4gKAD
} +W[#;)ea(
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publicint getStartIndex(){ k(Xv&Zn
return startIndex; dp W%LXM_
} A>@epCD
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publicvoid setStartIndex(int startIndex){ w:(7fu=
if(totalCount <= 0) ai9,4
this.startIndex = 0; euC,]n.
elseif(startIndex >= totalCount) \>azY
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this.startIndex = indexes \`# 0,pLr
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[indexes.length - 1]; 7u0R=q
elseif(startIndex < 0) QP0X8%+p
this.startIndex = 0; OEi9
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else{ V2skr_1
this.startIndex = indexes z3LPR:&Z
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[startIndex / pageSize]; 7?#32B
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} >Sah\u`
} z|H>jit+
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publicint getNextIndex(){ mr.DP~O:9p
int nextIndex = getStartIndex() + A[a+,TN{
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pageSize; !~v>&bCG>9
if(nextIndex >= totalCount) n3,wwymQ
return getStartIndex(); P^-9?uBno
else G$<0_0GF
return nextIndex; >^N:A
} [N)M]u
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publicint getPreviousIndex(){ :LG%8Z{R
int previousIndex = getStartIndex() - ,iUx'U
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pageSize; \>k+Oyj
if(previousIndex < 0) "-%H</
return0; YZ@-0_Z
else O!tD1^O!1}
return previousIndex; lX3h'h
} gZv<_0N
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} t;3.;
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抽象业务类 G]CY3xw98
java代码: b??1Up
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/** TZg7BLfy
* Created on 2005-7-12 UEUTu}4y
*/ ): 6d_g{2
package com.javaeye.common.business; iXFaQ
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import java.io.Serializable;
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import java.util.List; cx}-tj"m-
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import org.hibernate.Criteria; Z]<_a)>
import org.hibernate.HibernateException; /&yT2p
import org.hibernate.Session; hr5)$qZW
import org.hibernate.criterion.DetachedCriteria; P>|2~YxjU
import org.hibernate.criterion.Projections; c3##:"wr
import oWmla*nCKL
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org.springframework.orm.hibernate3.HibernateCallback; @V)WJ{
import o6 /?WR 9
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org.springframework.orm.hibernate3.support.HibernateDaoS LxT ]-
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upport; XJ;/kR
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import com.javaeye.common.util.PaginationSupport; bb{+
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public abstract class AbstractManager extends (V&$KDOA
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HibernateDaoSupport { U<K)'l6#2n
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privateboolean cacheQueries = false; UZz/v#y~
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privateString queryCacheRegion; xcty
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publicvoid setCacheQueries(boolean EN^5Hppb
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cacheQueries){ \(C6|-:GY
this.cacheQueries = cacheQueries; 8MU+i%hd
} x. 8fxogz
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publicvoid setQueryCacheRegion(String 7_HFQT1.N
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queryCacheRegion){ .~u[rc|<
this.queryCacheRegion = Qco8m4n
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queryCacheRegion; Q`kV|
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} a`I
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publicvoid save(finalObject entity){ AT%6K.
getHibernateTemplate().save(entity); 52ExRG S
} *+(rQ";x
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publicvoid persist(finalObject entity){ ]n}aePl}oU
getHibernateTemplate().save(entity); #zRHYZc'T|
} 9:R3+,ZN
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publicvoid update(finalObject entity){ 9A~w2z\G
getHibernateTemplate().update(entity); M0yv=g
} uP G\1
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publicvoid delete(finalObject entity){ {8>g?4Q#
getHibernateTemplate().delete(entity); D6-R>"}
} 9TX2h0U?
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publicObject load(finalClass entity, t W+"/<U
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finalSerializable id){ :{+~i.*
return getHibernateTemplate().load EHN(K-
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(entity, id); 4C/G &w&
} _3(rwD
, #=TputM
publicObject get(finalClass entity, zOd*>
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finalSerializable id){ O}>@G
return getHibernateTemplate().get v4<W57oH
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(entity, id); @Ddz|4 vEi
} 1RJFPv
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publicList findAll(finalClass entity){ !m^;wkrY
return getHibernateTemplate().find("from +j{(NwsX
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" + entity.getName()); f`:GjA,J$
} & XmaGtt
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publicList findByNamedQuery(finalString
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)7 q"l3e"u
namedQuery){ Lo3N)~5
return getHibernateTemplate Pr1qX5> =
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().findByNamedQuery(namedQuery); ?HJh;96B
} KF
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publicList findByNamedQuery(finalString query, ?V,q&=9
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finalObject parameter){ & ?x R
return getHibernateTemplate )O" E#%
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().findByNamedQuery(query, parameter); \?;
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}
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publicList findByNamedQuery(finalString query, rw,Ylr:3
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finalObject[] parameters){ [02rs@c>
return getHibernateTemplate <a]i"s
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().findByNamedQuery(query, parameters); |]4!WBK
} wkM1tKhy/
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publicList find(finalString query){ -T,?'J0 2
return getHibernateTemplate().find W}f)VC;D
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(query); 4p,:}h
} ^FKiVKI:
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publicList find(finalString query, finalObject -NXxxK
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parameter){ x"{aO6M
return getHibernateTemplate().find U?#wWbE1
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(query, parameter); /?eVWCR
} !&{rnK
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public PaginationSupport findPageByCriteria ;cXw;$&D
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(final DetachedCriteria detachedCriteria){ }:0_%=)N<
return findPageByCriteria @|\9<S
n9'3~qVZ
(detachedCriteria, PaginationSupport.PAGESIZE, 0); E+aePo U
} wM+1/[7
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public PaginationSupport findPageByCriteria w}ji]V}
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(final DetachedCriteria detachedCriteria, finalint F_Y]>,U
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startIndex){ ,^:{!?v
return findPageByCriteria +>"s)R43
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(detachedCriteria, PaginationSupport.PAGESIZE, G-d7}Uz?
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startIndex); cUY-
} aV\i3\da
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public PaginationSupport findPageByCriteria {7o3wxsS
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(final DetachedCriteria detachedCriteria, finalint O] @E8<?^
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pageSize, YO$Ig:a#
finalint startIndex){ ON,[!pc
return(PaginationSupport) Pk;\^DRC
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getHibernateTemplate().execute(new HibernateCallback(){ NiZfaC6V
publicObject doInHibernate ?2]fE[SqY
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(Session session)throws HibernateException { e9{ii2M
Criteria criteria = (VeK7cU
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detachedCriteria.getExecutableCriteria(session); 1SExlU
int totalCount = Db|f"3rq?
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((Integer) criteria.setProjection(Projections.rowCount jZA1fV
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()).uniqueResult()).intValue(); QTHY{:Rmu
criteria.setProjection zG9FO/@av
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(null); w!m4>w
List items = C~ &E7w