Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ETR7%0$r
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 {96NtR0Z
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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 ]{I>HA5[
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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 nFro#qx
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分页支持类: FRQkD%k
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java代码: TT){15T;"
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package com.javaeye.common.util; E^~ {thf
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import java.util.List; =w:H9uj6F
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publicclass PaginationSupport { #kJ8 qN
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publicfinalstaticint PAGESIZE = 30; !L_xcov!Y
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privateint pageSize = PAGESIZE; )a+bH </'
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privateList items; "kucFf f
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privateint totalCount; v~p?YYOm<
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privateint[] indexes = newint[0]; 8zwH^q[`r
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privateint startIndex = 0; ] HRHF'4
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public PaginationSupport(List items, int
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totalCount){ z,VXH ?.Zo
setPageSize(PAGESIZE); 77 ?TRC
setTotalCount(totalCount); sr~VvciIy
setItems(items); `2xt%kC
setStartIndex(0); z3w;W{2Q;V
} ;]rj Kc=
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public PaginationSupport(List items, int Q0xQxz
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totalCount, int startIndex){ 8"u.GL.
setPageSize(PAGESIZE); ?w)A`G_
setTotalCount(totalCount); i_I`
setItems(items); 475jmQ{q
setStartIndex(startIndex); zD
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} TJ,?C$3
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public PaginationSupport(List items, int Kke
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totalCount, int pageSize, int startIndex){ u R!'v
setPageSize(pageSize); 'qeUI}[
setTotalCount(totalCount); S:c
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setItems(items); vTp,j-^
setStartIndex(startIndex); q"LT 8nD\
} 6-nf+!#G
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publicList getItems(){ $% W.=a'5
return items; zS?DXE
} 5)w;0{X!P
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publicvoid setItems(List items){ aCBq}Xcn
this.items = items; 0s.4]Zg>5
} m# ^).+
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publicint getPageSize(){ 2$gFiZ
return pageSize; t"6u
} AP?m,nd6
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publicvoid setPageSize(int pageSize){ e"2x!(&n(
this.pageSize = pageSize; u5,vchZ
} d-]!aFj|U
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publicint getTotalCount(){ A}1:fw\Fn3
return totalCount; #|Je%t}~
} `oE.$~'
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publicvoid setTotalCount(int totalCount){ Ba
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if(totalCount > 0){ N/E=-&E8
this.totalCount = totalCount; ]oC7{OoX
int count = totalCount / 'qidorT>N
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pageSize; JJP!9<
if(totalCount % pageSize > 0) y<y9'tx
count++; _Aw-{HE'
indexes = newint[count]; j9=)^?
for(int i = 0; i < count; i++){ v)'Uoe"R%
indexes = pageSize * ay28%[Q b4
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} ?j}
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}else{ oMN
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this.totalCount = 0; e#?rK=C?9
} X-%91z:o58
} X|60W
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publicint[] getIndexes(){ `iwGPG!
return indexes; 3d_g@x#9
} )KY U[
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publicvoid setIndexes(int[] indexes){ =&vRT;6
this.indexes = indexes;
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publicint getStartIndex(){ FFf
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return startIndex; d,t'e?
} S,C/l1s
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publicvoid setStartIndex(int startIndex){ kgRgHkAH~
if(totalCount <= 0) B 5va4@
this.startIndex = 0; e?dR'*-z
elseif(startIndex >= totalCount) 6Kd,(DI
this.startIndex = indexes "o<&3c4
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[indexes.length - 1]; SS-7y:6y>
elseif(startIndex < 0) e\]CZ5hs3
this.startIndex = 0; 1ka58_^
else{ et6@);F
this.startIndex = indexes it=ir9
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[startIndex / pageSize]; wpm $?X
} <U""CAE
} pKk{Q0Rt
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publicint getNextIndex(){ y Xi$w.gr
int nextIndex = getStartIndex() + TK%MVL TK
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pageSize; A#w*r-P
if(nextIndex >= totalCount) `VRt{p
return getStartIndex(); R6G%_,p$7
else luO4ap]*
return nextIndex; /I q6'oo
} gUv`G
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publicint getPreviousIndex(){ +*$@ K'VL
int previousIndex = getStartIndex() - rcjj(
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pageSize; 4iZ7BD
if(previousIndex < 0) T@DT|lTI
return0; ww~gmz
else }Ym~[S*x
return previousIndex; eX{Tyd{
} #^<Rx{
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} &?yVLft
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抽象业务类 b/'RJQSAc
java代码: q,_ 1?A)
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/** :8Jn?E (36
* Created on 2005-7-12 >*[Bq;
*/ 0D48L5kH#'
package com.javaeye.common.business; -8, lXrH
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import java.io.Serializable; 2sXX0kq~V
import java.util.List; `n~bDG>
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import org.hibernate.Criteria; n$(_(&
import org.hibernate.HibernateException; O8WLulo
import org.hibernate.Session; nHmi%R7k
import org.hibernate.criterion.DetachedCriteria; m=%WA5c?
import org.hibernate.criterion.Projections; Ptv=Bwg
import 28PT19&
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org.springframework.orm.hibernate3.HibernateCallback; 5oE!^bF?
import (8OaXif
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org.springframework.orm.hibernate3.support.HibernateDaoS M}tr*L
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upport; O[#pB.
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import com.javaeye.common.util.PaginationSupport; BF>3CW7
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public abstract class AbstractManager extends &5F@u
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HibernateDaoSupport { R} aHo0r
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privateboolean cacheQueries = false; fu?Y'Qet
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privateString queryCacheRegion; Ok&u4'<
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publicvoid setCacheQueries(boolean #97w6,P+
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cacheQueries){ N_"mC^Vx
this.cacheQueries = cacheQueries; H{3A6fb<
} :If1zB)
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publicvoid setQueryCacheRegion(String F82_#|kpS
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queryCacheRegion){ 6?v)Hb}J%d
this.queryCacheRegion = s'|^ 6/
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queryCacheRegion; L0O},O
} 7-hSso.'
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publicvoid save(finalObject entity){ -h<Rby
getHibernateTemplate().save(entity); SMdQ,n1]
} amK.H"
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publicvoid persist(finalObject entity){ ^s&1,
getHibernateTemplate().save(entity); 2_]"9d4
} @4N@cM0
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publicvoid update(finalObject entity){ %l7|+%M.{
getHibernateTemplate().update(entity); n/fMq,<8
} 1]uHaI(
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publicvoid delete(finalObject entity){ 3G7Qo
getHibernateTemplate().delete(entity); OK}+:Y
} y84=Q
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publicObject load(finalClass entity, ?lYi![.o
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finalSerializable id){ ]"<
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return getHibernateTemplate().load \Q+<G-Kb.
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(entity, id); GX+o A]
} D|[~Py
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publicObject get(finalClass entity, *VFUC:
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finalSerializable id){ (Wu_RXfCw_
return getHibernateTemplate().get Q!<b"8V]
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(entity, id); ]#N~r&hmQ
} _f8<t=R
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publicList findAll(finalClass entity){ QDg\GA8|
return getHibernateTemplate().find("from \y9( b
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" + entity.getName()); u^T{sQ"_
} hi I`ot
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publicList findByNamedQuery(finalString nZbfc;da
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namedQuery){ :b&O{>M]Y
return getHibernateTemplate 5X5 &(S\
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().findByNamedQuery(namedQuery); _T 5ZL
} bt/u^E
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publicList findByNamedQuery(finalString query, OA??fb,b
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finalObject parameter){ MXbt`]`_
return getHibernateTemplate 0\*6UH
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().findByNamedQuery(query, parameter); Xx~XW^lsh
} NX^%a1D!
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publicList findByNamedQuery(finalString query, VQ/<MY C
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finalObject[] parameters){ ;=IGl:
return getHibernateTemplate
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().findByNamedQuery(query, parameters); _
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} {"dU?/d
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publicList find(finalString query){ &