Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ?b~V uo
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 8]N+V:
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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 oP".>g-.
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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 )-2o}KU]>
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分页支持类: h&Ehp
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java代码: s45Y8!c
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package com.javaeye.common.util; E{d Mdz
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import java.util.List; B3'qmi<
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publicclass PaginationSupport { su(y*187A
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publicfinalstaticint PAGESIZE = 30; I;L$Nf{v
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privateint pageSize = PAGESIZE; \@Gyl_6^
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privateList items; E) >~0jv
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privateint totalCount; -@G|i$!
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privateint[] indexes = newint[0]; 0b=OK0n!%
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privateint startIndex = 0; 9tXLC|yl?
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public PaginationSupport(List items, int m~#S76!w
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totalCount){ Tn/T:7C
setPageSize(PAGESIZE); dh%C@n:B
setTotalCount(totalCount); i)\`"&.j>N
setItems(items); Y*3qH]
setStartIndex(0); \CB{Ut+s
} X(1nAeQ
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public PaginationSupport(List items, int M'W@K
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totalCount, int startIndex){ JTpKF_Za<
setPageSize(PAGESIZE); AShJtxxa
setTotalCount(totalCount); rOB-2@-
setItems(items); }?#<)|_5
setStartIndex(startIndex); ' G-]>
} {LY$
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public PaginationSupport(List items, int ${KDGJ,^
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totalCount, int pageSize, int startIndex){ 57)S"
setPageSize(pageSize); s7SW4ff1
setTotalCount(totalCount); 4kNf4l9Y
setItems(items); BkJV{>?_+
setStartIndex(startIndex); HLAWx/c,j"
} ,$mnD@)
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publicList getItems(){ c&3
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return items; P`5@$1CJ
} \)DP(wC
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publicvoid setItems(List items){ FsY}mql
this.items = items; 6/T
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} R(=Lhz6R4
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publicint getPageSize(){ LS Na
return pageSize; %U)/>Z
} $91c9z;f^
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publicvoid setPageSize(int pageSize){ p<'#f,o
this.pageSize = pageSize; ~o= Sxaf
} oU$Niw9f
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publicint getTotalCount(){ gf2l19aP
return totalCount; @YMef`T:
} G7pj.rQ
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publicvoid setTotalCount(int totalCount){ .Frc:Y{
if(totalCount > 0){ `&4L'1eF{
this.totalCount = totalCount; F5wCl2I
int count = totalCount / _$NFeqLww
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pageSize; V?
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if(totalCount % pageSize > 0) 8uM >Up X
count++; :f ybH)*
indexes = newint[count]; ,<zGvksk
for(int i = 0; i < count; i++){ :qc@S&v@]
indexes = pageSize * |zKe*H/
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} '49&qO5B
}else{ 7qA0bUee5
this.totalCount = 0; cTHS Pr?<
} xpx=t71Hq
} Tw)nFr8oF]
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publicint[] getIndexes(){ KIC5U50J
return indexes; d `>M-:dF
} UQaLhKv:
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publicvoid setIndexes(int[] indexes){ 2 #kR1rJP
this.indexes = indexes; &&xBq?
} 1% ]|O
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publicint getStartIndex(){ (#BkL:dg
return startIndex; e Pq(:ih
} a57Y9.H`o
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publicvoid setStartIndex(int startIndex){ fB:9:NX
if(totalCount <= 0) hq6fDRO/4
this.startIndex = 0; 1Zx|SBF
elseif(startIndex >= totalCount) HlqCL1\<
this.startIndex = indexes \-0@9E<D
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[indexes.length - 1]; Ah;2\0|t
elseif(startIndex < 0) ^G[xQcM73
this.startIndex = 0; -X'HZ\)
else{ bvuoGG*
this.startIndex = indexes `ky<
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[startIndex / pageSize]; R5g-b2Lm
} y{,HpPp#o
} "fdgBso
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publicint getNextIndex(){ --d<s
int nextIndex = getStartIndex() + ;gYW!rM
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pageSize; KoRJ'WW^
if(nextIndex >= totalCount) o%i^t4J$e
return getStartIndex(); PBbJfm
else yQ}$G
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return nextIndex; l)[\TD
} n1 =B
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publicint getPreviousIndex(){ gS _)(
int previousIndex = getStartIndex() - vp?87h
t
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pageSize; <gF=$u|}3[
if(previousIndex < 0) _T&?H
return0; J0*hJ-/u
else iZ<^p1i
return previousIndex; "CLoM\M)
} ym9Z:2g
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} E0!}~Z)
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抽象业务类 Py$Q]s?\1
java代码: eqU2>bIf
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/** mE'y$5ZxY
* Created on 2005-7-12 ye:pGa w
*/ /x,gdZPX
package com.javaeye.common.business; e:fp8 k<
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import java.io.Serializable; Ef{rY|E
import java.util.List; @wy|l)%
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import org.hibernate.Criteria; |t+M/C0y/
import org.hibernate.HibernateException; )Fx"S.Ok
import org.hibernate.Session; 9] fhH
import org.hibernate.criterion.DetachedCriteria; M(|Qvh{Q6
import org.hibernate.criterion.Projections; v".q578
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import fft FNHP
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org.springframework.orm.hibernate3.HibernateCallback; eQu%TZ(x-$
import <f.* =/]W2
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org.springframework.orm.hibernate3.support.HibernateDaoS ~qt)r_jW
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upport; Jz7a|pgep
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import com.javaeye.common.util.PaginationSupport; aDmyr_f$
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public abstract class AbstractManager extends Gdmh#pv
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HibernateDaoSupport { C~4_Vc*
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privateboolean cacheQueries = false; mR@|] T
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privateString queryCacheRegion; Z:DEET!c'k
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publicvoid setCacheQueries(boolean ph{p[QI:{X
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cacheQueries){ O4RNt,?l
this.cacheQueries = cacheQueries; :f%FM&b
} DX GClH
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publicvoid setQueryCacheRegion(String 59mNb:<
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queryCacheRegion){ )]WWx-Uf'
this.queryCacheRegion = 5I/wP qR[
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queryCacheRegion; JYuI~<:
} E}AOtY5a
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publicvoid save(finalObject entity){ 56gpAc
getHibernateTemplate().save(entity); mkgGX|k;
} 6hDK;J J&
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publicvoid persist(finalObject entity){ o#3?")>|
getHibernateTemplate().save(entity); y_EkW
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} uw!
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publicvoid update(finalObject entity){ u$ [R>l9
getHibernateTemplate().update(entity); +13h*
} wI.i\S
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publicvoid delete(finalObject entity){ Vij P;
getHibernateTemplate().delete(entity); f0p+l-iEv
} = ms(dr^n
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publicObject load(finalClass entity, 8|^dM$
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finalSerializable id){ 6BM[RL?T
return getHibernateTemplate().load 9ZvBsG)
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(entity, id); t`NZ_w /
} !wiW#PR
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publicObject get(finalClass entity, $jT&]p
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finalSerializable id){ A{\#.nC/z
return getHibernateTemplate().get zRTR
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(entity, id); Vp8t8X1`
} s2f95<B
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publicList findAll(finalClass entity){ ~^d. zIN!
return getHibernateTemplate().find("from UjibQl3:m
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" + entity.getName()); C
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} #oRm-yDr
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publicList findByNamedQuery(finalString z ogtIn)
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namedQuery){ RC7|@a
return getHibernateTemplate *Q2;bmIc
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().findByNamedQuery(namedQuery); 9~+A<X]Hd
} 7sP;+G
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publicList findByNamedQuery(finalString query, Eu/~4:XN
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finalObject parameter){ OLXkiesK{
return getHibernateTemplate &qw7BuF
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().findByNamedQuery(query, parameter); 5
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} C${{&$&