Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ^!d3=}:0
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 s<Ziegmw|g
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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 LoV<:|GTI
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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
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分页支持类: %EH)&k
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java代码: V0@=^Bls
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package com.javaeye.common.util; l#o
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import java.util.List; )5,v!X)
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publicclass PaginationSupport { {c'lhUB
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publicfinalstaticint PAGESIZE = 30; 0B2t"(&
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privateint pageSize = PAGESIZE; %J(:ADu]
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privateList items; Y<OFsWYY
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privateint totalCount; T)/eeZ$
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privateint[] indexes = newint[0]; o/E >f_k[
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privateint startIndex = 0; 1}x%%RD_
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public PaginationSupport(List items, int afVT~Sf{
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totalCount){ +7Gwg
setPageSize(PAGESIZE); @ Y+oiB~Y
setTotalCount(totalCount); -w2/w@&
setItems(items); 01]f2.5
setStartIndex(0); K-v#.e4
} D*jM1w_`
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public PaginationSupport(List items, int -@'FW*b
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totalCount, int startIndex){ .v
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setPageSize(PAGESIZE); p K*TE5]
setTotalCount(totalCount); 1EK*g;H
setItems(items); dO'(2J8
setStartIndex(startIndex); {: /}NpA$
} ?uu*L6
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public PaginationSupport(List items, int wk^B"+Uhy
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totalCount, int pageSize, int startIndex){ M`_0C38
setPageSize(pageSize); Jy)/%p~
setTotalCount(totalCount); O.? JmE
setItems(items); Gc?a +T
setStartIndex(startIndex); _BufO7`.
} K(4_a``05
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publicList getItems(){ Mx}gN:Wt
return items; 5P2K5,o|n~
} _a, s
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publicvoid setItems(List items){ \fOEqe*5SM
this.items = items; vx
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} #!=tDc
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publicint getPageSize(){ ZJoM?g~WFI
return pageSize; c<~H(k'+c
} 6tZI["\
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publicvoid setPageSize(int pageSize){ }MySaL>
this.pageSize = pageSize; _`X:jj>
} ?ub35NLa
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publicint getTotalCount(){ Pz7XAcPQ(
return totalCount; X$
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} kh<2BOV
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publicvoid setTotalCount(int totalCount){ :FF=a3/"6
if(totalCount > 0){ &{:-]g\
this.totalCount = totalCount; gXU8hTd8
int count = totalCount / u8^lB7!e/
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pageSize; lE;!TQj:X
if(totalCount % pageSize > 0) bA 2pbjg=
count++; @ Qe0! (_=
indexes = newint[count]; btB%[]
for(int i = 0; i < count; i++){ rv;3~'V
indexes = pageSize * :RYTL'hes
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} XW/o<[91
}else{ crCJrN=
this.totalCount = 0; \8tsDG(1 '
} H,J8M{
} )7@0[>
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publicint[] getIndexes(){ lZ0 =;I
return indexes; *p d@.|^)m
} 3`HV(5U[
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publicvoid setIndexes(int[] indexes){ K3C <{#r
this.indexes = indexes; kfNWI#'9
} \e_O4
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publicint getStartIndex(){ ICCc./l|
return startIndex; fA-7VdR`R
} zs;JJk^
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publicvoid setStartIndex(int startIndex){ CTK;dM'uQ
if(totalCount <= 0) *Ex|9FCt$
this.startIndex = 0; 1YA% -~
elseif(startIndex >= totalCount) ;S{(]K7i
this.startIndex = indexes '-6~tWC~7
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[indexes.length - 1]; g0H[*"hj
elseif(startIndex < 0) 'qi}|I
this.startIndex = 0; Rcv9mj]l
else{ <3iMRe
this.startIndex = indexes 0(Ij%Wi,
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[startIndex / pageSize]; 49P4b<1
}
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} GILfbNcd
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publicint getNextIndex(){ 9L9sqZUB
int nextIndex = getStartIndex() + ^8tEach
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pageSize; )"LJ
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if(nextIndex >= totalCount) SuznN
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return getStartIndex(); Cw%{G'O
else c,22*.V/
return nextIndex; zi:BF60]=
} 0V]s:S
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publicint getPreviousIndex(){ tkhCw/
int previousIndex = getStartIndex() - IID5c"
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pageSize; 67TwPvh
if(previousIndex < 0) Q\)F;: |
return0; 'yth'[
else BY*Q_Et
return previousIndex; E4!Fupkpf
} %\DX#.
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} 'S~5"6r
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抽象业务类 JRFtsio*
java代码: v:p} B$
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/** Fi1@MG5$2
* Created on 2005-7-12 zL it
*/ P4?glh q#
package com.javaeye.common.business; +#By*;BJ
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import java.io.Serializable; y]imZ4{/
import java.util.List; :EH=_"
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import org.hibernate.Criteria; "j-CZ\]U|
import org.hibernate.HibernateException; r/sNrB1U"y
import org.hibernate.Session; U&xUfBDt
import org.hibernate.criterion.DetachedCriteria; :LTN!jj
import org.hibernate.criterion.Projections; nm+s{
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org.springframework.orm.hibernate3.HibernateCallback; zJXplvaL;
import z=FZiH
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org.springframework.orm.hibernate3.support.HibernateDaoS Tr|JYLwF
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upport; b\ PgVBf9
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import com.javaeye.common.util.PaginationSupport; [V!tVDs&'o
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public abstract class AbstractManager extends 2Hdu:"j
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HibernateDaoSupport { I|J/F}@p
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privateboolean cacheQueries = false; mt`.6Xz~
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privateString queryCacheRegion; w:l"\Tm
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publicvoid setCacheQueries(boolean W l16`9
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cacheQueries){ yBRC*0+Vy
this.cacheQueries = cacheQueries; m3ff;,
} {^'HL
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publicvoid setQueryCacheRegion(String J=L5=G7(
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queryCacheRegion){ +O5hH8<&b
this.queryCacheRegion = 7Qsgys#/=
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queryCacheRegion; ap~^Ty<>
} *qMY22X
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publicvoid save(finalObject entity){ iO[<1?
getHibernateTemplate().save(entity); I l.K"ll
} !-Y3V"
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publicvoid persist(finalObject entity){ v3qA":(w+(
getHibernateTemplate().save(entity); 'n|5ZhXPB
} 6^Sa;
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publicvoid update(finalObject entity){ Wl Sm
getHibernateTemplate().update(entity); Sc
} d %#b:(,
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publicvoid delete(finalObject entity){ oE~Bq/p
getHibernateTemplate().delete(entity); Q,9oKg
} j.kG};f
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publicObject load(finalClass entity, =2 kG%9
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finalSerializable id){ `XB
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return getHibernateTemplate().load g1o8._f.
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(entity, id); fX+O[j
} 0^ibNiSP
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publicObject get(finalClass entity, 6R5Qy]]E
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finalSerializable id){ m`_ONm'T&
return getHibernateTemplate().get bTu9;(
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(entity, id); Y<rU#Z #T
} ]q-Y }1di8
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publicList findAll(finalClass entity){ HKr
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return getHibernateTemplate().find("from :c[L3rJl
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" + entity.getName());
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} _~
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publicList findByNamedQuery(finalString j)GtEP<n#
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namedQuery){ Yuc> fFA
return getHibernateTemplate )/EO&F
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().findByNamedQuery(namedQuery); x=jK:3BF
} ;'Nd~:-]
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publicList findByNamedQuery(finalString query, yA>nli=
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finalObject parameter){ ,=:D
return getHibernateTemplate /SrAW`;"
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().findByNamedQuery(query, parameter); N"1B/u
} +@:x!q|^
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publicList findByNamedQuery(finalString query, |&[EZ+[
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finalObject[] parameters){ @gtQQxf"
return getHibernateTemplate ^BL"wk
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().findByNamedQuery(query, parameters); FEVlZ<PW3I
} .%OR3"9@
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publicList find(finalString query){ TuYCR>P[
return getHibernateTemplate().find 6i*sm.SDw
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(query); TW>WHCAm
} $2el&I
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publicList find(finalString query, finalObject y|q3Wa
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parameter){ KK%M~Y+tU'
return getHibernateTemplate().find TBrPf-Xr
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(query, parameter);
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} Y]5l.SV
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public PaginationSupport findPageByCriteria +&"zU GTIc
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(final DetachedCriteria detachedCriteria){ Q1l '7N
return findPageByCriteria (2
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); .y,0[i V
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} ~| 6[j<ziL
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public PaginationSupport findPageByCriteria d5z`B H.
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(final DetachedCriteria detachedCriteria, finalint a+PzI x2
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startIndex){ 7fX<511(
return findPageByCriteria 63~
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(detachedCriteria, PaginationSupport.PAGESIZE, {$Gd2gO
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startIndex); u=_mvN
}
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public PaginationSupport findPageByCriteria 4X(H;
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(final DetachedCriteria detachedCriteria, finalint |qZ1|
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pageSize, Bng@-#`/
finalint startIndex){ d$AWu{y
return(PaginationSupport) 5-xX8-ElYz
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getHibernateTemplate().execute(new HibernateCallback(){ mS~kJy_-
publicObject doInHibernate /_#q@r4ZQ
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(Session session)throws HibernateException { G<^{&E+=
Criteria criteria = MO <3"@/,
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detachedCriteria.getExecutableCriteria(session); AlW66YAuQ
int totalCount = 9lDhIqx0~
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((Integer) criteria.setProjection(Projections.rowCount 9v!1V,`j"
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()).uniqueResult()).intValue(); g^ i&gNDx
criteria.setProjection g!z&~Z:
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(null); klR|6u]%
List items = fLm*1S|%\
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criteria.setFirstResult(startIndex).setMaxResults Yr=Y@~ XL
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(pageSize).list(); r s?R:+
PaginationSupport ps = Ktm4 A O
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new PaginationSupport(items, totalCount, pageSize, Y.ToIka{
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startIndex); ?vHU#
return ps; :+|Z@KB
} [o5Hl^
}, true); Jl9k``r*
} fku<,SV$O4
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public List findAllByCriteria(final %lGfAYEM=
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DetachedCriteria detachedCriteria){ cXOK)g#
return(List) getHibernateTemplate &7wd?)s
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().execute(new HibernateCallback(){ P0PWJ^+,+
publicObject doInHibernate tlp@?(u
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