Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 \C6m.%%={R
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 F3f>pK5
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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 'qD9kJ`
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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 *K 7L5.
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分页支持类: @kK=|(OB'
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java代码: D|BN_ai9
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package com.javaeye.common.util; >@|<1Fx|
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import java.util.List; Jzj~uz
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publicclass PaginationSupport { ~@O4>T+VW
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publicfinalstaticint PAGESIZE = 30; %In"Kh*
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privateint pageSize = PAGESIZE; E}GSii%S
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privateList items; CNz[@6-cYU
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privateint totalCount; 3$b(iI< "
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privateint[] indexes = newint[0]; D0P% .r"v
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privateint startIndex = 0; ",+uvJT1O
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public PaginationSupport(List items, int b(VU{cf2d
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totalCount){ R}VL UL$
setPageSize(PAGESIZE); {MtB!x
setTotalCount(totalCount); R;yAqr29
setItems(items); Rt|Hma
setStartIndex(0); n\YxRs7
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} 3{z|301<m
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public PaginationSupport(List items, int }M9al@"
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totalCount, int startIndex){ i<?4iwX%i*
setPageSize(PAGESIZE); 6.jZy~
setTotalCount(totalCount); Hn~1x'$
setItems(items); 6b|`[t
setStartIndex(startIndex); E~P0}'
} gK( 4<PO'
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public PaginationSupport(List items, int @FV;5M:I
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totalCount, int pageSize, int startIndex){ 8iN As#s
setPageSize(pageSize); Zy%Z]dF
setTotalCount(totalCount); E0Djo'64
setItems(items); $yAfs3/%)s
setStartIndex(startIndex); ;cr6Xop#?
} c
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publicList getItems(){ -Tx tX8v
return items; Mvv=)?:
} %np#Bv-L
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publicvoid setItems(List items){ av?BpN"l
this.items = items; a:}"\>Aj
} )'~FDw\6
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publicint getPageSize(){ .B13)$C
return pageSize; G#:!wI
} mW-W7-JhO7
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publicvoid setPageSize(int pageSize){ 'qJ-eQ7e
this.pageSize = pageSize; 02[II_< 1
} R!,)?j;
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publicint getTotalCount(){ Jf$wBPg
return totalCount; pG6-.F;
} ea0tx3'
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publicvoid setTotalCount(int totalCount){ N -]PK%*
if(totalCount > 0){ PuaosMn(9
this.totalCount = totalCount; D8Rmxq!
int count = totalCount / PNgMLQI6
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pageSize; _vH!0@QFU
if(totalCount % pageSize > 0) hH}/v0_ jb
count++; e9_+$Oo
indexes = newint[count]; 6sl<Z=E#
for(int i = 0; i < count; i++){ VWy:U#;+8
indexes = pageSize * lg>AWTW[
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} 7V
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}else{ =bWq 3aP)P
this.totalCount = 0; }!V<"d,!
} !d.>r
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} )`mF.87b&h
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publicint[] getIndexes(){ ; ZV^e
return indexes; ;|QR-m2/
} acY[?L_6J
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publicvoid setIndexes(int[] indexes){ 2TEeP7
this.indexes = indexes; RCYbRR4y
} "n }fEVJ,
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publicint getStartIndex(){ 2bnIT>(
return startIndex; 9Fx z!-9m
} hX%v`8
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publicvoid setStartIndex(int startIndex){ NB5B$q_'#
if(totalCount <= 0) -_DiD^UcXn
this.startIndex = 0; o%PoSZZ
elseif(startIndex >= totalCount) Z4ov
this.startIndex = indexes So%1RY{)
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[indexes.length - 1]; J 7;n;Mx
elseif(startIndex < 0) V
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this.startIndex = 0; hX| UE
else{ h_G|.7!
this.startIndex = indexes C$G88hesn
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[startIndex / pageSize]; `OReSg
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} 50bP&dj&
} |uwteG5?$s
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publicint getNextIndex(){ ku9FN
int nextIndex = getStartIndex() + X /,1]
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pageSize; *2
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if(nextIndex >= totalCount) #'Y6UGJ\n
return getStartIndex(); a 8hv .43
else (Zn3-t*
return nextIndex; q\y#
} 9Q7cUoxY
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publicint getPreviousIndex(){ A;j$rGx
int previousIndex = getStartIndex() - sFM>gG
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pageSize; %802H%+
if(previousIndex < 0) YZ:'8<
return0; m\Fb ,
else wQrPS
return previousIndex; ?Gv!d
} `)!2E6 =
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} 9
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抽象业务类 P}WhE
java代码: X`v79`g_
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/** ]#-/i2-K
* Created on 2005-7-12 VBsFT2XiL
*/ iLd"tn'
package com.javaeye.common.business; [xs)u3b
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import java.io.Serializable; (:bCOEZ
import java.util.List; *ez~~ Y
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import org.hibernate.Criteria; ><
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import org.hibernate.HibernateException; tTh;.88Z{
import org.hibernate.Session; 0CVsDVA
import org.hibernate.criterion.DetachedCriteria; z0Z\d
import org.hibernate.criterion.Projections; 7- 3N
import 0e:QuV2X
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org.springframework.orm.hibernate3.HibernateCallback; 9s6>9hMb)
import a2=uM}Hsp
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org.springframework.orm.hibernate3.support.HibernateDaoS Or#+E2%1E
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upport; pT;-1c%:
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import com.javaeye.common.util.PaginationSupport; g*r{!:,t
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public abstract class AbstractManager extends [cLU*:
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HibernateDaoSupport { :*&9TNUE@
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privateboolean cacheQueries = false; bR8
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}!yD^:[5
privateString queryCacheRegion; 6v2RS
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publicvoid setCacheQueries(boolean #9hXZr/8
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cacheQueries){ QOh w
this.cacheQueries = cacheQueries; LY88;*:S
} e<O;pM:
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publicvoid setQueryCacheRegion(String HSr"M.k5
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queryCacheRegion){ hKzBq*cV
this.queryCacheRegion = _Dcc<-.
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queryCacheRegion;
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} E_![`9i
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publicvoid save(finalObject entity){ K,C$J
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getHibernateTemplate().save(entity); M\?uDC9
} pW3)Y5/D
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publicvoid persist(finalObject entity){ 1l|A[G
getHibernateTemplate().save(entity); ;LF)u2x=
} F<ocY0=9p
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publicvoid update(finalObject entity){ .iP G /e
getHibernateTemplate().update(entity); %X9:R'~ sP
} ox\B3U%`p}
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publicvoid delete(finalObject entity){ Nvx)H(8F
getHibernateTemplate().delete(entity); |!xfIR>=F
} %M;_(jda
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publicObject load(finalClass entity, /!{A=N
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finalSerializable id){ =FD`A#\C~
return getHibernateTemplate().load ReB(T7Vk=
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(entity, id); Q&.IlVB[
} iQm.]A
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publicObject get(finalClass entity, Z*)y.i `
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finalSerializable id){ EYJ i6#
return getHibernateTemplate().get JW% /^'
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(entity, id); AK~`pq[.
} SP
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publicList findAll(finalClass entity){ =_?pOq
return getHibernateTemplate().find("from |B1;l<|`
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" + entity.getName()); O'!r]0Q
} "3Xv%U9@
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publicList findByNamedQuery(finalString rKy-u
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namedQuery){ 1|l)gfcP
return getHibernateTemplate I4o=6ts
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().findByNamedQuery(namedQuery); N)vk0IM!
} }o!#_N0T
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publicList findByNamedQuery(finalString query, 6m-:F.k1(
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finalObject parameter){ f- k|w%R@
return getHibernateTemplate { /F rs*AF
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().findByNamedQuery(query, parameter); Uaus>Frx.T
} =YXe1$ $
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publicList findByNamedQuery(finalString query, ElEv(>G*
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finalObject[] parameters){ _X,[]+ziu%
return getHibernateTemplate /slm
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().findByNamedQuery(query, parameters); ,TKs/-_?
} ~$&:NB1~q
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publicList find(finalString query){ w PG1P'w;
return getHibernateTemplate().find I9[1U
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(query); (
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} `x{.z=xC
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publicList find(finalString query, finalObject N"Qg\PS_
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parameter){ Yo~LckFF
return getHibernateTemplate().find "wnpiB}
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(query, parameter); ?fbgU
} VxkCK02k
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public PaginationSupport findPageByCriteria z.2r@Psk
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(final DetachedCriteria detachedCriteria){ BR& Aq
return findPageByCriteria sJ))<,e5I
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); 93W
} .N~PHyXZR
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public PaginationSupport findPageByCriteria KA 5~">l
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(final DetachedCriteria detachedCriteria, finalint v`#j
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startIndex){ !US8aT
return findPageByCriteria c;:">NR
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(detachedCriteria, PaginationSupport.PAGESIZE, ID67?:%r
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startIndex); v229H<
} _ztZ>'
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public PaginationSupport findPageByCriteria ]{f^;y8
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(final DetachedCriteria detachedCriteria, finalint 0bMoUy*q
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pageSize, v ! 7s
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finalint startIndex){ G'ij?^?
return(PaginationSupport) R)0N0gH
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getHibernateTemplate().execute(new HibernateCallback(){ 403[oOj
publicObject doInHibernate $> "J"IX
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(Session session)throws HibernateException { Q~Ay8L+
Criteria criteria = v,/[&ASz
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detachedCriteria.getExecutableCriteria(session); ~I{EE[F>qL
int totalCount = 9T(L"9r-e
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((Integer) criteria.setProjection(Projections.rowCount e^j<jV`1
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()).uniqueResult()).intValue(); r55qmPhg
criteria.setProjection 2t+D8 d|c<
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(null); nz4<pvC,*
List items = *IC^IC:
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criteria.setFirstResult(startIndex).setMaxResults ')B =|T)
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(pageSize).list(); \|CPR6I
PaginationSupport ps = 10p8|9rE}B
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new PaginationSupport(items, totalCount, pageSize, `
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startIndex); %BUEX
return ps; 4-mVB wq
} 3Jk[/.h
}, true); H&M1>JtE
} a:85L!~:l
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public List findAllByCriteria(final 9B
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DetachedCriteria detachedCriteria){ $@_{p*q
return(List) getHibernateTemplate 93j{.0]X
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().execute(new HibernateCallback(){ |,b2b2v?
publicObject doInHibernate zj<ahg%z
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(Session session)throws HibernateException { l^\(ss0~
Criteria criteria = lsk_P&M
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