Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 cVv4gQD\
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 V+@%(x@D_
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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 kxKnmB#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 el*pYI
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分页支持类: JWm^RQ
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java代码: r>:7${pF
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package com.javaeye.common.util; V?L$ys
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import java.util.List; Ubos#hP
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publicclass PaginationSupport { )su
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publicfinalstaticint PAGESIZE = 30; H2p XJ/XF
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privateint pageSize = PAGESIZE; %(7wZ0Z
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privateList items; tX`[6`
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privateint totalCount; i4n%EDQ
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privateint[] indexes = newint[0]; BC0c c[x
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privateint startIndex = 0; la"A$Tbu~
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public PaginationSupport(List items, int MnrGD>M@|
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totalCount){ D A)0Y_
setPageSize(PAGESIZE); bCx1g/
setTotalCount(totalCount); +]~w ?^h
setItems(items); UC
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setStartIndex(0); H*
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} LK-6z w5=(
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public PaginationSupport(List items, int my #u^O;
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totalCount, int startIndex){ V]PhXVJ
setPageSize(PAGESIZE); `J7Lecgo
setTotalCount(totalCount); f [I'j0H%
setItems(items); pNf9
setStartIndex(startIndex); uW--
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} _Ag/gu2-?
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public PaginationSupport(List items, int m+8b2H:V
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totalCount, int pageSize, int startIndex){ 0jZ{ ?
setPageSize(pageSize); Kac j
setTotalCount(totalCount); V<7K!<g)b
setItems(items); eYSGxcx
setStartIndex(startIndex); SUi1*S
} wj:3
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publicList getItems(){ 3L%r_N*a
return items; FC-*?
} F@(}=w^(A
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publicvoid setItems(List items){ '<W,-i
this.items = items; HF=C8ZtlL
} 1*,~ 1!>
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publicint getPageSize(){ r-Xe<|w
return pageSize; ~JRuMP
} 8sjHQ)<
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publicvoid setPageSize(int pageSize){ 88=FPEU
this.pageSize = pageSize; 8cPf0p:
} Gv
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publicint getTotalCount(){ r~!%w(N|M
return totalCount; pmD-]0
}
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publicvoid setTotalCount(int totalCount){ >sS:x,-
if(totalCount > 0){ l
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this.totalCount = totalCount; 7<'i #E~
int count = totalCount / 1YD.jU^;HD
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}
pageSize; f I-"8f0_
if(totalCount % pageSize > 0) F$y FR
count++; h \cK
indexes = newint[count]; 0BP~0z
for(int i = 0; i < count; i++){ =ZIFS
indexes = pageSize * *>*/|
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} JP*wi-8D
}else{
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this.totalCount = 0; PL_wa(}y]D
} eKti+n.
} 2DqHqq9m
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publicint[] getIndexes(){
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return indexes; "/-v 9
} x[@3;_'K
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publicvoid setIndexes(int[] indexes){ }`FC__
this.indexes = indexes; {Qmb!`F
} uqeWdj*Y
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publicint getStartIndex(){ k)' z<EL6c
return startIndex; E_uH'E
} jy|xDQ
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publicvoid setStartIndex(int startIndex){ MW@b;=(
if(totalCount <= 0) $,#IPoi~X
this.startIndex = 0; =0fx6V
elseif(startIndex >= totalCount) 959jp85
this.startIndex = indexes 0(f;am0y
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[indexes.length - 1]; >:nJTr
elseif(startIndex < 0) }'v?Qq
this.startIndex = 0; F9J9pgVP
else{ DJjDKVO5t
this.startIndex = indexes ,lYU#Hx*
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[startIndex / pageSize]; y'wW2U/1-
} KCT"a:\
} "A`'~]/hE
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publicint getNextIndex(){ Xn'>k[}<k
int nextIndex = getStartIndex() + 19`0)pzZ*P
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pageSize; U*h)nc
if(nextIndex >= totalCount) \eN/fTPm
return getStartIndex(); ew ['9
else ?S:_J!vX{
return nextIndex; Q</HFpE
} +%$V?y
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publicint getPreviousIndex(){ IH:Cm5MV
int previousIndex = getStartIndex() - ${eh52)`
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pageSize; r:Cid*~m
if(previousIndex < 0) \1_&?(pU
return0; [M>_(u6
else [+7X&B
return previousIndex; [kkcV5I-
} n}kz&,
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}
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抽象业务类 q2i~<;Z)9
java代码: HjR<4;2
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/** w2AWdO6
* Created on 2005-7-12 @6`@.iZ
*/ +c_CYkHJ/
package com.javaeye.common.business; pz =Wq4l
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import java.io.Serializable; 7^X_tQf
import java.util.List; +q%goG8
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import org.hibernate.Criteria; t4uxon
import org.hibernate.HibernateException; {u3u%^E;R
import org.hibernate.Session; r{&"]'/X
import org.hibernate.criterion.DetachedCriteria; "//
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import org.hibernate.criterion.Projections; (E[hl
import #JM*QVzv
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org.springframework.orm.hibernate3.HibernateCallback; biK.HL\V
import
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org.springframework.orm.hibernate3.support.HibernateDaoS nJC}wh2d#
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upport; vkmR
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import com.javaeye.common.util.PaginationSupport; =p$ Wo
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public abstract class AbstractManager extends Jq)k?WS
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HibernateDaoSupport { >?<d}9X
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privateboolean cacheQueries = false; i[J',
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privateString queryCacheRegion; ;oE4,
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publicvoid setCacheQueries(boolean S0yT%V
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cacheQueries){ N%yFL
this.cacheQueries = cacheQueries; en)DN3
} b
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publicvoid setQueryCacheRegion(String qsx1:Ny1
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queryCacheRegion){ )=@ XF0
this.queryCacheRegion = \
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publicvoid save(finalObject entity){ #$E
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getHibernateTemplate().save(entity); ,5:86'p
} +0DIN4Y(4
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publicvoid persist(finalObject entity){ `R^VK-=C
getHibernateTemplate().save(entity); =|/b[Gd(
} 0:EiCKb)ol
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publicvoid update(finalObject entity){ )9O{4PbU!
getHibernateTemplate().update(entity); %e(,PL
} 7 &Aakl
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publicvoid delete(finalObject entity){ uPPe"$
getHibernateTemplate().delete(entity); gu!A:Q
} arJ[.f9s
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publicObject load(finalClass entity, p"Y=
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finalSerializable id){ hV)I
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return getHibernateTemplate().load MRc^lYj{
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(entity, id); [A47OR
} sh1fz 6g
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publicObject get(finalClass entity, &~8}y+z
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finalSerializable id){ g@L4G?hLn
return getHibernateTemplate().get (Lp-3Xx
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} %oo&M;
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publicList findAll(finalClass entity){ kMA>)\
return getHibernateTemplate().find("from tznT*EQr
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" + entity.getName()); \?ZdUY
} U&NOf;h$
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publicList findByNamedQuery(finalString FYJB.lAT
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namedQuery){ 2%I:s6r
return getHibernateTemplate t9}XO M*
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().findByNamedQuery(namedQuery); v3p..A~XZ.
} iX28+weH
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publicList findByNamedQuery(finalString query, !Zrvko
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finalObject parameter){ m`|Z1CT
return getHibernateTemplate \r2w@F{C
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().findByNamedQuery(query, parameter); bu.36\78
} ;"3Mm$
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publicList findByNamedQuery(finalString query, {:Q2Itsy
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finalObject[] parameters){ z} %to0W
return getHibernateTemplate 8Xr3q eh+
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().findByNamedQuery(query, parameters); qhtc?A/0}
} )q,}jeM8
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publicList find(finalString query){ nF-FoO98
return getHibernateTemplate().find Z6=!}a%
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(query); CY:pYke=
} IO+z:D{
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publicList find(finalString query, finalObject M$)+Uo2
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parameter){ Wwz>tE
return getHibernateTemplate().find PIA&s6U
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(query, parameter); ;#
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} g^idS:GtX5
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public PaginationSupport findPageByCriteria }yw\+fc
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(final DetachedCriteria detachedCriteria){ U{x'@/Ld
return findPageByCriteria 'D4NPG`z
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); KQqlM
} G`n-WP
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public PaginationSupport findPageByCriteria /\9Kr;@vk
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(final DetachedCriteria detachedCriteria, finalint %guot~S|
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startIndex){ I9MI}0}7
return findPageByCriteria %nIjRmqM~
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(detachedCriteria, PaginationSupport.PAGESIZE, 9we=aX5
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startIndex); Mf
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} c]9OP9F
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