Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 jZ*WN|FK?
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 kHK0(bYK
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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 cr;`Tl~}s
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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 aSutM
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分页支持类: (5Nv8H8|
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java代码: 2?q(cpsN
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package com.javaeye.common.util; \wvg,j=
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import java.util.List; yYZxLJ='
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publicclass PaginationSupport { u9qMqeF
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publicfinalstaticint PAGESIZE = 30; j]rz] k
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privateint pageSize = PAGESIZE; ?Bi*1V<R
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privateList items; Di.3113t
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privateint totalCount; $A_]:qI2
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privateint[] indexes = newint[0]; nw:-J1kWR
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privateint startIndex = 0; 9LJZ-/Wq
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public PaginationSupport(List items, int -V.d?A4"
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totalCount){ f9$xk|2g
setPageSize(PAGESIZE); +j14Q$
setTotalCount(totalCount); l! bv^
setItems(items); pKG<Nvgz&
setStartIndex(0); (5L-G{4
} kS5_
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public PaginationSupport(List items, int B=f,QU
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totalCount, int startIndex){ x Gk6n4Gg
setPageSize(PAGESIZE); o+B:#@9?
setTotalCount(totalCount); O*6n$dUj3
setItems(items); 1 T<+d5[C
setStartIndex(startIndex); I{'f|+1
} _f0C Y"
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public PaginationSupport(List items, int 6?tlU>A2s
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totalCount, int pageSize, int startIndex){ &
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setPageSize(pageSize); Elj_,z
setTotalCount(totalCount); {y= W6uP
setItems(items); >4` dy
setStartIndex(startIndex); g^Yl TB
} g]~h(mI
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publicList getItems(){ +avMX&%
return items; YUU-D(
} X!hIwi A,t
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publicvoid setItems(List items){ `>(W"^
this.items = items; )m3Uar
} Oc].@Jy
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publicint getPageSize(){ 3\O|ii
return pageSize; .jw}JJ
} {]*x*aa\
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publicvoid setPageSize(int pageSize){ 3chPY4~A
this.pageSize = pageSize; (:V>Hjt
} +ECDD'^!
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publicint getTotalCount(){ ]
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return totalCount; g:l.MJT
} [&[^G25
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publicvoid setTotalCount(int totalCount){ BaF!O5M
if(totalCount > 0){ 620%Z*
this.totalCount = totalCount; <:>SGSE9
int count = totalCount / >I
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pageSize; Am0{8
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if(totalCount % pageSize > 0) Qhi '')Q
count++; Y/<lWbj*A
indexes = newint[count]; '+>fFM,*B
for(int i = 0; i < count; i++){ /
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indexes = pageSize * 7M_U2cd|TD
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} dCe4u<so\
}else{ /^{BUo
this.totalCount = 0; u=F+(NE"
} 3ya1'qUC
} `O?TUQGR
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publicint[] getIndexes(){ s`j~-P
return indexes; ,21 np
} yH 9!GS#
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publicvoid setIndexes(int[] indexes){ ZoB*0H-
this.indexes = indexes; @$"J|s3M
} W%2
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publicint getStartIndex(){ &c(WE
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return startIndex; $mmup|;(
} >h2%[j=
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publicvoid setStartIndex(int startIndex){ iI@jZVk
if(totalCount <= 0) .roqEasu8
this.startIndex = 0; v8gdU7Ll,
elseif(startIndex >= totalCount) p^nL&yIW,%
this.startIndex = indexes E9|eu\
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[indexes.length - 1]; ,/&'m13b/L
elseif(startIndex < 0) l.\re"Q
this.startIndex = 0; (bOpV>\Q7
else{ Tu{&v'!j6
this.startIndex = indexes f'I z
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[startIndex / pageSize]; p(xC*KWB
} XoLJ L]+?
} [ xOzzp4
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publicint getNextIndex(){ EV#MQM
int nextIndex = getStartIndex() + "'8KV\/D
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pageSize; N"/-0(9[
if(nextIndex >= totalCount) 8zLY6@
return getStartIndex(); !Fw?H3X!"q
else @D-AO_
return nextIndex; GLn{s
} i&njqK!wS
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publicint getPreviousIndex(){ F62V3 Xy
int previousIndex = getStartIndex() - nVu&/
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pageSize; Q$obOEr2(
if(previousIndex < 0) 9!9Z~/*m
return0; W3vi@kb]
else j*e6vX
return previousIndex; mNf8kwr
} E3@QI?n^^
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} [S.ZJUns
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抽象业务类 D'Z|}(d&
java代码: lnovykR
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/** a $"ib
* Created on 2005-7-12 87}&`
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package com.javaeye.common.business; 6:U$w7P0
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import java.io.Serializable; AC
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import java.util.List; 8<mjh0F-,
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import org.hibernate.Criteria; KbL V'%D
import org.hibernate.HibernateException; \;VhYvEH
import org.hibernate.Session; ve
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import org.hibernate.criterion.DetachedCriteria; EFpIp4_Y
import org.hibernate.criterion.Projections; nd;fy$<J\
import d!KsNkk
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org.springframework.orm.hibernate3.HibernateCallback; +(xeT+J
import vA$o~?a]/
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org.springframework.orm.hibernate3.support.HibernateDaoS +\li*G]:J
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upport; !R*-R.%
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import com.javaeye.common.util.PaginationSupport; bX.ja;;
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public abstract class AbstractManager extends $Vc~/>
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HibernateDaoSupport { o7B[R) 4
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privateboolean cacheQueries = false; iX'rU@C
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privateString queryCacheRegion; UgWs{y2SE.
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publicvoid setCacheQueries(boolean "MIq.@8ra
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cacheQueries){ )}TLC 2%
this.cacheQueries = cacheQueries; )CX4kPj
} 0y<wvLv2C
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publicvoid setQueryCacheRegion(String R*|LI
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queryCacheRegion){ \4"S7.% |
this.queryCacheRegion = `@i5i((
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queryCacheRegion; -XRn~=5
} 3nY1[,
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publicvoid save(finalObject entity){ )BfT7{WN
getHibernateTemplate().save(entity);
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} .(J?a"
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publicvoid persist(finalObject entity){ Zo KcJA
getHibernateTemplate().save(entity); 0l;<5
} H+
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publicvoid update(finalObject entity){ *9)SmSs
getHibernateTemplate().update(entity); b3wM;jv
} {JV@"t-X3"
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publicvoid delete(finalObject entity){ IVr 2y8K
getHibernateTemplate().delete(entity); >NB?&|
} nm7;ieMfr
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publicObject load(finalClass entity, $A3<G-4O
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finalSerializable id){ +GsWTEz
return getHibernateTemplate().load XC7%vDIt
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(entity, id); *m%]zj0bo
} $+}+zZX5
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publicObject get(finalClass entity, [ofqGwpDG
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finalSerializable id){ 6<0n *&
return getHibernateTemplate().get ~[k%oA%W
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(entity, id); k%y9aO
} T0)"1D<l
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publicList findAll(finalClass entity){ `nUO l
return getHibernateTemplate().find("from l"n{.aL
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" + entity.getName()); d--y
} x.1-)\
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publicList findByNamedQuery(finalString qo)?8kx>l
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namedQuery){ Yxv9
return getHibernateTemplate = 07Gy, =i
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().findByNamedQuery(namedQuery); {brMqE>P#
} p0.|<
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publicList findByNamedQuery(finalString query, ~)?
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finalObject parameter){ y/V%&.$o=
return getHibernateTemplate GRy-+#,b"
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().findByNamedQuery(query, parameter); {{C`mgC
} ,Ma.V\T[
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publicList findByNamedQuery(finalString query, c:83LZ
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finalObject[] parameters){ /ug8]Lo0
return getHibernateTemplate c`x7u}C
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().findByNamedQuery(query, parameters); ( 6(x'ByT
} B=
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publicList find(finalString query){ 4h6k`ie!$
return getHibernateTemplate().find 5 ,0d
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(query); DoC(Z)o
} QZ
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publicList find(finalString query, finalObject iVB^,KQ@
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parameter){ nS()u}c;r
return getHibernateTemplate().find U $Qv>7
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(query, parameter); ,fEO>
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} n6F/Ac:
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public PaginationSupport findPageByCriteria z9W`FBg
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(final DetachedCriteria detachedCriteria){ dk8wIa"K`
return findPageByCriteria `ovtHl3Q
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); SPj><5Ro
} {;2i.m1
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public PaginationSupport findPageByCriteria \b}~2oX
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(final DetachedCriteria detachedCriteria, finalint #6Xs.*b5C
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startIndex){ >-E<