Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 @4sEHk
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 O*qSc^ 9q
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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 +]?/c>M
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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 Buxn!s
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分页支持类: kT7x
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java代码: Cn\5Vyrl
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package com.javaeye.common.util; :vsBobiJ
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import java.util.List; Tt^PiaS!
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publicclass PaginationSupport { p~v
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publicfinalstaticint PAGESIZE = 30; 7E0L-E=.
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privateint pageSize = PAGESIZE; _ ^ JhncL
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privateList items; whH_<@!
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privateint totalCount; QmHj=s:x\
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privateint[] indexes = newint[0]; oc|%|pmRd<
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privateint startIndex = 0; l g0 'qH8
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public PaginationSupport(List items, int v8{ jEAK
, ZisJksk
totalCount){ 6 b/UFO
setPageSize(PAGESIZE); blVt:XS{,m
setTotalCount(totalCount); d17RJW%A
setItems(items); &XvSAw+D@
setStartIndex(0); @%FLT6MY
} Q4;%[7LU
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public PaginationSupport(List items, int jH5VrN*Q
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totalCount, int startIndex){ #1,"^k^
setPageSize(PAGESIZE); 0c-.h
setTotalCount(totalCount); \`kH2`
setItems(items); h)NZG6R
setStartIndex(startIndex); BB$(0mM^
} 4+tKg*|
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public PaginationSupport(List items, int ^X?D4a|;#g
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totalCount, int pageSize, int startIndex){ B,xohT
setPageSize(pageSize); T"bH{|:%*=
setTotalCount(totalCount); bmid;X|
setItems(items); fen~k#|l
setStartIndex(startIndex); AhyV
} jV|j]m&t
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publicList getItems(){ s^&Oh*SP*
return items; =/#+,
} _N @h
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publicvoid setItems(List items){ :cE6-Fv
this.items = items; )qID<j#
} e=H,|)P
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publicint getPageSize(){ ~dtS
return pageSize; xs}3=&c(
} $n><p>`
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publicvoid setPageSize(int pageSize){ ZFxa2J~ ;
this.pageSize = pageSize; 7{BTtUMAC
} &^7^7:Y=?
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publicint getTotalCount(){ j@o
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return totalCount; lSG"c+iV
} \jpm
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publicvoid setTotalCount(int totalCount){ vyA
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if(totalCount > 0){ hI#1Ybl
this.totalCount = totalCount; }x~1w:zHd
int count = totalCount / yKhN1kY
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pageSize; {CaTu5\
if(totalCount % pageSize > 0) au;ZAXM|
count++; (DnrJ.QU}t
indexes = newint[count]; VpO+52&
for(int i = 0; i < count; i++){ ! N!A%
indexes = pageSize * xb (Cd
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} 3UNmUDl[~
}else{ c $fYK
this.totalCount = 0; lP;X=X>
} f\vy5''
} /\wm/Yx?S
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publicint[] getIndexes(){ {/2
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return indexes; +
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} K;'s+ZD
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publicvoid setIndexes(int[] indexes){ 1w$X;q"
this.indexes = indexes; #*tWhXU
} {aoG60N
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publicint getStartIndex(){ #wS/QrRE
return startIndex; uLq%Nu
} S2\|bs7;J,
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publicvoid setStartIndex(int startIndex){ [dIlt"2fV
if(totalCount <= 0) *RllKP Y)
this.startIndex = 0; KB5<)[bs
elseif(startIndex >= totalCount) 9`FPV`/
this.startIndex = indexes W }
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[indexes.length - 1]; Q13>z%Rge
elseif(startIndex < 0) r^Mu`*x*
this.startIndex = 0; Ls2g#+
else{ "/g\?Nce
this.startIndex = indexes Z[GeU>?P
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[startIndex / pageSize]; p02E:?
} tPz!C&.=
} :$f9(f&
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publicint getNextIndex(){ 2_C&p6VGj
int nextIndex = getStartIndex() + n:P++^ j
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pageSize; v2KK%Qy
if(nextIndex >= totalCount) lBZhg~{
return getStartIndex(); ><DXT nt'x
else >0AVs6&;v
return nextIndex; +6;1.5Tc
} 3q)y;T\yW
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publicint getPreviousIndex(){ XdV(=PS!a@
int previousIndex = getStartIndex() - \2OjIEQQ
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pageSize; *V[6ta'
if(previousIndex < 0) * R_mvJlT
return0; di|5|bn7
else Z~6PrM-M
return previousIndex; 5-B % 08T
} 48g`i
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抽象业务类 \eoJ6IRE\T
java代码: +sm9H"_0
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/** #7BX,jvn>
* Created on 2005-7-12 \ ~uY);
*/ +<$b6^>!$
package com.javaeye.common.business; SadffAvSA{
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import java.io.Serializable; cqZuG}VR
import java.util.List; -;RW)n^n
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import org.hibernate.Criteria; Xd@_:ds
import org.hibernate.HibernateException; @lu`oyM
import org.hibernate.Session; /=+Bc=<lZ
import org.hibernate.criterion.DetachedCriteria; ~0T,_N
import org.hibernate.criterion.Projections; 5hg
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import ,cwjieM
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org.springframework.orm.hibernate3.HibernateCallback; =2R0 g2n
import g'<ekY+V:
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org.springframework.orm.hibernate3.support.HibernateDaoS 2|:x_rcj
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upport; oBI@.&tG}
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import com.javaeye.common.util.PaginationSupport; g?>V4WF
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public abstract class AbstractManager extends
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HibernateDaoSupport { c?7Wjy
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privateboolean cacheQueries = false; HE.YfD)
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privateString queryCacheRegion; z8*{i]j
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publicvoid setCacheQueries(boolean uK5 C-
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cacheQueries){ !UF(R^
this.cacheQueries = cacheQueries; mb#&yK(h
} x>eV$UJ
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publicvoid setQueryCacheRegion(String 3.@I\p}
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queryCacheRegion){ ' "I-! +
this.queryCacheRegion = nf)y_5y
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queryCacheRegion; qN@0k>11?
} p{W'[A{J .
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publicvoid save(finalObject entity){ XyrQJ}WR|
getHibernateTemplate().save(entity); i=aK ?^+
} 2Nvb Q 3c5
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publicvoid persist(finalObject entity){ rlP?Uh
getHibernateTemplate().save(entity); (GB*+@
} ;)ji3 M
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publicvoid update(finalObject entity){ h-6zQs
getHibernateTemplate().update(entity); ]^BgSC
} 0;SRmj@W
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publicvoid delete(finalObject entity){ +A%"_7L}
getHibernateTemplate().delete(entity); 0o_wy1O1,
} 3Sl2c
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publicObject load(finalClass entity, 3R)_'!R[B
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finalSerializable id){ |]+PDc%
return getHibernateTemplate().load \Rz-*zr&
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(entity, id); \+VQoB/
} # "KaRh
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publicObject get(finalClass entity, %(i(Cf8@
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finalSerializable id){ ["ML&2|o
return getHibernateTemplate().get 9ELRn@5.
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(entity, id); M\6u4p!G!
} iiD}2yb
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publicList findAll(finalClass entity){ *G(ZRj@33
return getHibernateTemplate().find("from ~%d* #Yxq
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" + entity.getName()); b|E1>TkY
} KGNBzy~9
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publicList findByNamedQuery(finalString j*#k%;c
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namedQuery){ ObEp0-^?
return getHibernateTemplate 09sdt;V Q
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().findByNamedQuery(namedQuery); $ i;_yTht
} x
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publicList findByNamedQuery(finalString query, <= Aqi9 1
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finalObject parameter){ M$MFUGS'
return getHibernateTemplate 3U&rK)F
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().findByNamedQuery(query, parameter); w i=&W
} 1qd(3A41
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publicList findByNamedQuery(finalString query, 5~\GAjf
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finalObject[] parameters){ A`ScAzx5{
return getHibernateTemplate uG{/yJeU
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().findByNamedQuery(query, parameters); DxJY{e9
} ,@r 0-gL
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publicList find(finalString query){ !B:wzb_
return getHibernateTemplate().find SeIL
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(query); K}TSwY
} xF])NZy|
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publicList find(finalString query, finalObject `z~L0h
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parameter){ `PI?RU[g*
return getHibernateTemplate().find f}uW(:f
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(query, parameter); zIy&gOX
} #Pe|}!)u
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public PaginationSupport findPageByCriteria }CB9H$FkCY
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(final DetachedCriteria detachedCriteria){ k btQ
return findPageByCriteria )F65sV{
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); gib'f@i ;
} S/)yi
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public PaginationSupport findPageByCriteria 35Cm>X
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(final DetachedCriteria detachedCriteria, finalint JHCXUT-r{
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startIndex){ -i*]Sgese
return findPageByCriteria /j;HM[
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(detachedCriteria, PaginationSupport.PAGESIZE, WI\jm&H r
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startIndex); 7Kn}KO!Y8
} L#Rj~&U
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public PaginationSupport findPageByCriteria -Gd@baV
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(final DetachedCriteria detachedCriteria, finalint b3l~wp6>
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pageSize, `C>De4nT@
finalint startIndex){ bo40s9"-*W
return(PaginationSupport) %1z`/B
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getHibernateTemplate().execute(new HibernateCallback(){ U_<k*o@:
publicObject doInHibernate y?ypRCgO.u
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(Session session)throws HibernateException { T/iZ"\(~w
Criteria criteria = )kvrQ6
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detachedCriteria.getExecutableCriteria(session); Z^6qxZJ7
int totalCount = 33OkYC%e
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((Integer) criteria.setProjection(Projections.rowCount m)e~HP7M
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()).uniqueResult()).intValue(); ^C70b)68
criteria.setProjection mae@L
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(null); &*9' 0
List items = =.2)wA"e'
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criteria.setFirstResult(startIndex).setMaxResults QW=
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(pageSize).list(); dlCmSCp%
PaginationSupport ps = `{ ` W-C
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new PaginationSupport(items, totalCount, pageSize, Fr)6<9%xVm
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startIndex); W
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return ps; CM4#Nn=i~
} - sL4tMP
}, true); !;E{D
} &Rt^G
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public List findAllByCriteria(final LZz]4Mf
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DetachedCriteria detachedCriteria){ w<Ot0&