Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 d4rJ?qw
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 X+G*Q}5
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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 R^w >aZoJ
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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 x'PjP1
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分页支持类: _-2n3py
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java代码: -O q=J;
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package com.javaeye.common.util; }u$aPS<$!
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import java.util.List; t
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publicclass PaginationSupport { L,ey3i7a\
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publicfinalstaticint PAGESIZE = 30; 1OGv+b)
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privateint pageSize = PAGESIZE; rMFf8D(Y
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privateList items; :JG}%
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privateint totalCount; FbT&w4Um=
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privateint[] indexes = newint[0]; _ r)hr7
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privateint startIndex = 0; ?At-
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public PaginationSupport(List items, int NjMLq|X
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totalCount){ ;SP3nU))
setPageSize(PAGESIZE); S~9kp?kR$
setTotalCount(totalCount); 5rSth.&
setItems(items); U.9nHo{
setStartIndex(0); FnU;n
} K%@SS8!oy
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public PaginationSupport(List items, int aQuy*\$$
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totalCount, int startIndex){ mM%BO(X{=
setPageSize(PAGESIZE); x1ex}_\
setTotalCount(totalCount); O!yn
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setItems(items); VrP%4P+
setStartIndex(startIndex); 7im;b15j`'
} `Hu;Gdj=
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public PaginationSupport(List items, int YZJP7nN
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totalCount, int pageSize, int startIndex){ 9~af\G
setPageSize(pageSize); $h
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setTotalCount(totalCount); Q)dns)_x
setItems(items); ~hX'FV
setStartIndex(startIndex); mw%_yDZ{
} $dUN+9
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publicList getItems(){ X;g|-<
return items; <6 $%Y2
} k9?+9bExXA
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publicvoid setItems(List items){ '^AXUb
this.items = items; E':Z_ ^4
} nwVtfsb
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publicint getPageSize(){ s os&
return pageSize; r}bKVne
} >iV(8EgBS
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publicvoid setPageSize(int pageSize){ 6dlPS{H#U
this.pageSize = pageSize; Ss}0.5Bq
} OkXOV
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publicint getTotalCount(){ Z2
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return totalCount; d_hcv|%
} HB:i0m2fJW
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publicvoid setTotalCount(int totalCount){ R~([
if(totalCount > 0){ s q$|Pad[
this.totalCount = totalCount; 6;DPGx
int count = totalCount / eU0-_3gN_
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pageSize; f|)t[,c
if(totalCount % pageSize > 0) /;1FZ<zU
count++;
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indexes = newint[count]; L&%iY7sC`
for(int i = 0; i < count; i++){ [OSUARm
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indexes = pageSize * 4 vphLAm
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} PHkvt!uH
}else{ 'cv/"26#
this.totalCount = 0; o6oYJ`PY
} ~r3g~MCHS
} 0Og =H79<
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publicint[] getIndexes(){ b;vO`
return indexes; th{h)( +H
}
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publicvoid setIndexes(int[] indexes){ 5ZLH=8L
this.indexes = indexes; T7`Jtqf
} "fdG5|NJe
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publicint getStartIndex(){ n>'}tT)U
return startIndex; (0r6_8e6xv
} x,+zw9
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publicvoid setStartIndex(int startIndex){ pFh2@O
if(totalCount <= 0) p5\b&~
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this.startIndex = 0; &x3y.}1
elseif(startIndex >= totalCount) 'Tn$lh
this.startIndex = indexes be_t;p`3
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[indexes.length - 1]; w[iQndu
elseif(startIndex < 0) rlq8J/0/+
this.startIndex = 0; qXW5_iX
else{ /D12N'VaE
this.startIndex = indexes z|Xl%8
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[startIndex / pageSize]; <q|19fH-5
} t0Uax-E(
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publicint getNextIndex(){ /CP1mn6H
int nextIndex = getStartIndex() + `k+k&t
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pageSize; Lt)t}0
if(nextIndex >= totalCount) $ _zdjzT
return getStartIndex(); +ad 2
else TSOt$7-
return nextIndex; QS[%`-dR2
} z;-2xD0&U[
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publicint getPreviousIndex(){ ^vzNs>eJ
int previousIndex = getStartIndex() - o_cj-
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pageSize; 9%x[z%06
if(previousIndex < 0) n[<Vj1n
return0; 7w9) ^
else [p(Y|~
return previousIndex; Kh27[@s
} f@yST z;u
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} t{$t3>p-t
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抽象业务类 b747 eR 7E
java代码: Ih.o;8PpK
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/** qh=lF_%uj
* Created on 2005-7-12 `A#r6+
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package com.javaeye.common.business; 3o6N&bQ b
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import java.io.Serializable; f F?=W
import java.util.List; 7-)Y\D
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import org.hibernate.Criteria; TK'(\[E
import org.hibernate.HibernateException; t.NG]ejZ
import org.hibernate.Session; TN&1C8xr
import org.hibernate.criterion.DetachedCriteria; k)4
import org.hibernate.criterion.Projections; 3dXyKi
import x}-r Ar
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org.springframework.orm.hibernate3.HibernateCallback; >zXw4=J
import ^G15]Pyw
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org.springframework.orm.hibernate3.support.HibernateDaoS dw'%1g.113
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upport; _uL m !ku
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import com.javaeye.common.util.PaginationSupport; \ B<(9
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public abstract class AbstractManager extends u"tv6Qp
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HibernateDaoSupport { RoPz?,u
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privateboolean cacheQueries = false; Z?X
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privateString queryCacheRegion; G.1pg]P!
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publicvoid setCacheQueries(boolean amOBUD5Ld`
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cacheQueries){ BT>8
this.cacheQueries = cacheQueries; SxNs
} .BuY[,I+
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publicvoid setQueryCacheRegion(String (V}DPA
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queryCacheRegion){ XswEAz0=
this.queryCacheRegion = gQ h;4v
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queryCacheRegion; FX 0^I 0
} -fn["R]
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publicvoid save(finalObject entity){ 5Tkh6 s
getHibernateTemplate().save(entity); |{<g-)
} 1P@&xcvS\
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publicvoid persist(finalObject entity){ g.Z>9(>;Y
getHibernateTemplate().save(entity); 9["yL{IPe
} e=QnGT*b5
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publicvoid update(finalObject entity){ ~"iCx+pr
getHibernateTemplate().update(entity); /&Khk #
} \,oT(p4N%M
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publicvoid delete(finalObject entity){ 7{2knm^
getHibernateTemplate().delete(entity); -%NT)o
} -aXV}ZY"
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publicObject load(finalClass entity, 7?dB&m6W
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finalSerializable id){ Y6 ,< j|
return getHibernateTemplate().load |r$Vb$z
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(entity, id); 1)X%n)2pr
} m&EwX ^1-
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publicObject get(finalClass entity, Da0E)
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finalSerializable id){ 3#j%F
return getHibernateTemplate().get O
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(entity, id); Yy@;U]R
} ]Jq1b210
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publicList findAll(finalClass entity){ 5M;fh)fT
return getHibernateTemplate().find("from t:9}~%~
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" + entity.getName()); k*\WzBTd
} "[q/2vC
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publicList findByNamedQuery(finalString I QS|
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namedQuery){ hbD@B.PD
return getHibernateTemplate ;$wS<zp6
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().findByNamedQuery(namedQuery); 4/&Us
} zQMsS
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publicList findByNamedQuery(finalString query, y{0`+/\`
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finalObject parameter){ Zrr3='^s
return getHibernateTemplate {OL*E0
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().findByNamedQuery(query, parameter); RY8;bUSR
} ;]D@KxO$dJ
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publicList findByNamedQuery(finalString query, iW(HOsA
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finalObject[] parameters){ vvU;55-
return getHibernateTemplate AU)"L_
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().findByNamedQuery(query, parameters); AyB-+oTf(
} B.-5$4*s
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publicList find(finalString query){ \rY|l
return getHibernateTemplate().find zm-j FY ?
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(query); !@{_Qt1
} OkGg4X|9
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publicList find(finalString query, finalObject qL091P\F
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parameter){ Q#wASd.
return getHibernateTemplate().find 4(o: #9I
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(query, parameter); @C62%fU {5
} c[}h( jkP
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public PaginationSupport findPageByCriteria I&l 1b>
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(final DetachedCriteria detachedCriteria){ VI,z7
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return findPageByCriteria O+%Y1=S[WQ
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); 'C)^hj.
} /6B!&b2f
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public PaginationSupport findPageByCriteria SL" ;\[uI
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(final DetachedCriteria detachedCriteria, finalint )_"Cz".|9
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startIndex){ E]WammX c
return findPageByCriteria Vh$~]>t:f
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(detachedCriteria, PaginationSupport.PAGESIZE, V|zzj[c
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startIndex); $%ZEP>]
} 4SCb9|/Q
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public PaginationSupport findPageByCriteria an={h,
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(final DetachedCriteria detachedCriteria, finalint o[q
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pageSize, ]Cnj=\'
finalint startIndex){ S9d+#6rn
return(PaginationSupport) &1YAPxX
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getHibernateTemplate().execute(new HibernateCallback(){ Pwf2dm$,+
publicObject doInHibernate 7].tt
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(Session session)throws HibernateException { Yf&x]<rkCp
Criteria criteria = V^B'T]s
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detachedCriteria.getExecutableCriteria(session); <^6|ZgR
int totalCount = 0M(\xO
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((Integer) criteria.setProjection(Projections.rowCount vS%o>"P
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()).uniqueResult()).intValue(); |K| c
criteria.setProjection F?&n5