Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ydVDjE
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 sMLXn]m
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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 S5gBVGh
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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 7`7 M4
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分页支持类: 3;jxIo$,
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java代码: 97HI9R
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package com.javaeye.common.util; w3VgGc~
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import java.util.List; 1\{FK Ot
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publicclass PaginationSupport { W9}
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publicfinalstaticint PAGESIZE = 30; $U/lm;{%
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privateint pageSize = PAGESIZE; #Mk3cp^Yl
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privateList items; gKQs:25
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privateint totalCount; ;Y8>?
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privateint[] indexes = newint[0]; \)6AzCq
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privateint startIndex = 0; "Uf1;;b
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public PaginationSupport(List items, int Af@\g-<W_
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totalCount){ 9,&xG\z=
setPageSize(PAGESIZE); cDYOJu.
setTotalCount(totalCount); .*n*eeD,
setItems(items); 2rC&
setStartIndex(0); e ?7NW
} :
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public PaginationSupport(List items, int 7}MnvWP
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totalCount, int startIndex){ E`xpZ>$mPx
setPageSize(PAGESIZE); a*}>yad
setTotalCount(totalCount); qnQ".
setItems(items); -ON-0L
setStartIndex(startIndex); i`<L#6RBT
} U8gj\G\`
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public PaginationSupport(List items, int #Muh|P]%\
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totalCount, int pageSize, int startIndex){ Xf"<
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setPageSize(pageSize); O8>&J-+2
setTotalCount(totalCount); v>nBdpjXh
setItems(items); o7Z8O,;
setStartIndex(startIndex); SmvMjZ+7Y
} \1#]qs -
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publicList getItems(){ =z"8#_3A
return items; t_16icF9U
} m<k6oev$
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publicvoid setItems(List items){ _cC!rq U1
this.items = items; !Ea9
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} ~z]VDEJ{q
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publicint getPageSize(){ hbr3.<o1lY
return pageSize; zN;P_@U
} !;vv-v,LQ
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publicvoid setPageSize(int pageSize){ j+dQI_']x
this.pageSize = pageSize; t,r:='
} z Fj |E
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publicint getTotalCount(){ $B<:SuV#
return totalCount; rH,@"(p\
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publicvoid setTotalCount(int totalCount){ ?WqaT) l~
if(totalCount > 0){ 5`:d$rv
this.totalCount = totalCount; 0y/31hp
int count = totalCount / g)ZMU^1
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pageSize; D@.qdRc3
if(totalCount % pageSize > 0) =-r); d
count++; y3j"vKG
indexes = newint[count]; |*b-m k
for(int i = 0; i < count; i++){ Q@PDhISa
indexes = pageSize * UU[z\^w| E
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} v.4G>0 0^
}else{ n53c}^
this.totalCount = 0; /J!:_Nq
} @x743}Y\
} nN-S5?X#
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publicint[] getIndexes(){ <HN{.p{
return indexes; olL? 6)gC
} RP+)sCh
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publicvoid setIndexes(int[] indexes){ Wi!"Vcn
this.indexes = indexes; TXyiCS3
} Px*<-t|R-
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publicint getStartIndex(){ |Ox='.oIb
return startIndex; xYW&Mfka
} Y.tT#J^=
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publicvoid setStartIndex(int startIndex){ Q[q`)~|
if(totalCount <= 0) T*=*$%
this.startIndex = 0; U1lqg?KO
elseif(startIndex >= totalCount) &dK!+
this.startIndex = indexes "dDrw ]P;
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[indexes.length - 1]; WK7?~R%rq
elseif(startIndex < 0) 7OG:G z+)x
this.startIndex = 0; g3{UP]Z71
else{ 5U+4vV/*
this.startIndex = indexes :{lP9%J-
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[startIndex / pageSize]; g*LD}`X/-
} -TG ="U
} to,\n"$~!
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publicint getNextIndex(){ Xxd]j]
int nextIndex = getStartIndex() + xh9$ZavB*
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pageSize; z,^~H
if(nextIndex >= totalCount) p nI=
return getStartIndex(); =8<~pr-NO
else 0jjtx'F
return nextIndex; R)\^*tkz7
} +DR$ >a
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publicint getPreviousIndex(){ Vr( Z;YO
int previousIndex = getStartIndex() - y35~bz^2
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pageSize; 6j6;lNUc
if(previousIndex < 0) cgQ6b.
return0; a\}MJ5]
else 8,!Oup
return previousIndex; %Pt){9b
} 3z2
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抽象业务类 \#I$H9O
java代码: aVc{ aP
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/** `V\?YS}
* Created on 2005-7-12 \i%mokfbc
*/ 8j3Y&m4^
package com.javaeye.common.business; qa
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import java.io.Serializable; W [K.|8ho
import java.util.List; mOn_#2=KF
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import org.hibernate.Criteria; VK1B}5 /
import org.hibernate.HibernateException; %KT}Map
import org.hibernate.Session; FC,=g`Q!
import org.hibernate.criterion.DetachedCriteria; wL
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import org.hibernate.criterion.Projections; 8SKrpwy
import B<m0YD?>~>
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org.springframework.orm.hibernate3.HibernateCallback; xV5UaD<
import wLXJ?iy3
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org.springframework.orm.hibernate3.support.HibernateDaoS <c pck
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upport; c8JW]A`9b)
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import com.javaeye.common.util.PaginationSupport; Nq6'7'x
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public abstract class AbstractManager extends _2hLc\#
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HibernateDaoSupport { HN{c)DIm]
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privateboolean cacheQueries = false; JL= c IH8
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privateString queryCacheRegion; J @"#
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publicvoid setCacheQueries(boolean f` uRC-B/
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cacheQueries){ RQx8Du<
this.cacheQueries = cacheQueries; Pj-INc96
} w!7\wI[
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publicvoid setQueryCacheRegion(String 'RK"/ZhqE
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queryCacheRegion){ RU:Rt'
this.queryCacheRegion = XWp8[Cxs
{ :tO
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queryCacheRegion; ssi7)0
} hJ'H@L7
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publicvoid save(finalObject entity){ lS.Adl^k
getHibernateTemplate().save(entity); m.e]tTe
} H,!xTy"Wh
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publicvoid persist(finalObject entity){ %SM;B-/zHt
getHibernateTemplate().save(entity); dw
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} 'jtC#:ePK
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publicvoid update(finalObject entity){ ~f1g"
getHibernateTemplate().update(entity); f&^(f1WO
} +$,Re.WnP
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publicvoid delete(finalObject entity){ k&]nF,f
getHibernateTemplate().delete(entity); Z',!LK!
} )u)=@@k21
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publicObject load(finalClass entity, IY`p7 )#i
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finalSerializable id){ N4!`iS Y
return getHibernateTemplate().load &v{Ehkr*
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(entity, id); 7~/ cz_
} 'YNaLZ20
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publicObject get(finalClass entity, 7;"0:eX
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finalSerializable id){ du3f'=q6|
return getHibernateTemplate().get _IYaMo.n
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(entity, id); y>^^.
} IHl q27O
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publicList findAll(finalClass entity){ 5'~_d@M
return getHibernateTemplate().find("from xP9(J
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" + entity.getName()); :d36oiHKu
} n|SV)92o1
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publicList findByNamedQuery(finalString k_al*iM>H
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namedQuery){ }]?Si6_ZZ
return getHibernateTemplate 'rD6MY
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().findByNamedQuery(namedQuery); ^mS |ff
} 'y8{,R4C
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publicList findByNamedQuery(finalString query, a&y^Ps6=
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finalObject parameter){ N%y i4
return getHibernateTemplate {f!/:bM
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().findByNamedQuery(query, parameter); 2ej7Ql_@c
} Nk`UQ~g$
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publicList findByNamedQuery(finalString query, .J"N}
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finalObject[] parameters){ NWBYpGZx
return getHibernateTemplate f&
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().findByNamedQuery(query, parameters); pMc6p0
} #x%'U}sF
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publicList find(finalString query){ G1"iu89d
return getHibernateTemplate().find I$Nh|eM
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(query); /'O8RUjN
} <P9fNBGa
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publicList find(finalString query, finalObject e_vsiT
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parameter){ $6QIYF""
return getHibernateTemplate().find _B4&Fb.
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(query, parameter); |Lq8cA)|y
} 3P>gDQP
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public PaginationSupport findPageByCriteria zd?@xno
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(final DetachedCriteria detachedCriteria){ @u3`lhUcT
return findPageByCriteria 6 Z/`p~e
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); Z5{a7U4z_
} &dtk&P{
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public PaginationSupport findPageByCriteria R+sT
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(final DetachedCriteria detachedCriteria, finalint R{hX--|j
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startIndex){ od;-D~
return findPageByCriteria JuRoeq.
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(detachedCriteria, PaginationSupport.PAGESIZE, _Fb}zPU!
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startIndex); #XV=,81w
} Er~ 17$b
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public PaginationSupport findPageByCriteria yI w}n67
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(final DetachedCriteria detachedCriteria, finalint <QtZ6-;_f
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pageSize, e4X
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finalint startIndex){ N&8TG
return(PaginationSupport) ?M2(80
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getHibernateTemplate().execute(new HibernateCallback(){ I8*VM3
publicObject doInHibernate ;'!x
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(Session session)throws HibernateException { #GsOE#*>T
Criteria criteria = SpH|<L3
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detachedCriteria.getExecutableCriteria(session); }E`Y.=
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int totalCount = 3f|}p{3
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((Integer) criteria.setProjection(Projections.rowCount fV:15!S[
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()).uniqueResult()).intValue(); 77e*9/6@
criteria.setProjection ^df wWP
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(null); J )1
List items = dzcF15H1
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criteria.setFirstResult(startIndex).setMaxResults 2:+8]b 3i
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(pageSize).list(); 3WV(Ok
PaginationSupport ps = ycGY5t@K@
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new PaginationSupport(items, totalCount, pageSize, 0SpB2>_
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startIndex); :\](m64z;
return ps; LS@TTiN
} 3F9V,zWtTi
}, true); 6)HmE[[F
} D)*
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public List findAllByCriteria(final ~z[`G#dU
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DetachedCriteria detachedCriteria){ Q @}$b(b
return(List) getHibernateTemplate J?4{#p
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().execute(new HibernateCallback(){ =4ygbk
publicObject doInHibernate M!mL/*G@YE
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(Session session)throws HibernateException { AbU`wr/h 4
Criteria criteria = $0* sjXV
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detachedCriteria.getExecutableCriteria(session); tZxx#v`
return criteria.list(); -oD,F
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} 6#w>6g4V~R
}, true); G,8mFH
} QE<Z@/V*a
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public int getCountByCriteria(final B`pBIUu
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DetachedCriteria detachedCriteria){ UhB+c
Integer count = (Integer) ?7\V)$00(&
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getHibernateTemplate().execute(new HibernateCallback(){ xBHf~:!
publicObject doInHibernate PZ[-a-p40
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(Session session)throws HibernateException { Khq\@`RaT
Criteria criteria = ci,(]T+!
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detachedCriteria.getExecutableCriteria(session); DR"Y(-xl
return ^`H'LD
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criteria.setProjection(Projections.rowCount q|5WHB
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()).uniqueResult(); eAHY/Y!
} 5!0iK9O
}, true); /08FV|tX)
return count.intValue(); 2:LUB)&i
} %$BRQ-O
} 7uBx
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