Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 }7CMXw
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ODK$G
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 PF@+~FI
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 ._m+@Uy]H}
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分页支持类: ua1ov7w$]
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java代码: <va3L y)c&
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package com.javaeye.common.util; \P]w^
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import java.util.List; M:|Z3p K
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publicclass PaginationSupport { J#B%
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publicfinalstaticint PAGESIZE = 30; E4RvVfA0F
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privateint pageSize = PAGESIZE; [-!
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privateList items; }}XYV eI
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privateint totalCount; !=@Lyt)_b
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privateint[] indexes = newint[0]; `k65&]&d
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privateint startIndex = 0; FX7=81**4
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public PaginationSupport(List items, int a&~_ba+
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totalCount){ 9^h\vR|]S
setPageSize(PAGESIZE); mD-qJ6AM
setTotalCount(totalCount); iph>"b$D
setItems(items); _f$8{&`k
setStartIndex(0); 5Jq~EB{"
} i rMZLc6
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public PaginationSupport(List items, int Y3r m')c
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totalCount, int startIndex){ O{a<f7 W
setPageSize(PAGESIZE); Zh`lC1l'
setTotalCount(totalCount); ~\`lbGJ7?
setItems(items); !s#25}9zX5
setStartIndex(startIndex); qd"1KzQWO
} 6lO]V=+
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public PaginationSupport(List items, int qEr2Y/:i"
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totalCount, int pageSize, int startIndex){
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setPageSize(pageSize); [Hz_x(t26
setTotalCount(totalCount); 0ZPwEP
setItems(items); 9tsI1]1[m
setStartIndex(startIndex); fv_}7t7
} {]<l|qK
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publicList getItems(){ |WH'aGG
return items; QlJ
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} "P HkbU
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publicvoid setItems(List items){ &Yi)|TU3'R
this.items = items; qLBXyQ;U
} Y~Y-L<`I
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publicint getPageSize(){ F<q'ivj:w
return pageSize; m\`dLrPX4j
} Twyx(~'&R
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publicvoid setPageSize(int pageSize){ pC
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this.pageSize = pageSize; k@U8K(:x
} w@Uw8b
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publicint getTotalCount(){ w~a^r]lPW
return totalCount; PVHJIB
} ~4h<nc
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publicvoid setTotalCount(int totalCount){ S[!K
if(totalCount > 0){ ){`s&? M0
this.totalCount = totalCount; :b)IDcW&j:
int count = totalCount / Gm;)Om_
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pageSize; $&/JY
if(totalCount % pageSize > 0) n/#zx:d?
count++; 3ny>5A!;2
indexes = newint[count]; &Oc^LV$6
for(int i = 0; i < count; i++){ ]|62l+
indexes = pageSize * bVmHUcR0
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} ^;jJVYx-PP
}else{ ^T@ (`H4@
this.totalCount = 0; 4Gs#_|!
} yQE|FbiA
} eznt "Rr2
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publicint[] getIndexes(){ lo*OmAF
return indexes; \7PPFKS
} i2KN^"v?N
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publicvoid setIndexes(int[] indexes){ D+ mZ7&L
this.indexes = indexes; tJ[yx_mf
} YXI_ '
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publicint getStartIndex(){ )9F-h8
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return startIndex; 6yk=4l\
} 0fwmQ'lW(
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publicvoid setStartIndex(int startIndex){ 4k/B=%l
if(totalCount <= 0) ST$~l7p
this.startIndex = 0; g^|}e?
elseif(startIndex >= totalCount) !.1oW(
this.startIndex = indexes _+PiaJ&'
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[indexes.length - 1]; #\s*>Z
elseif(startIndex < 0) .[&0FHnJ5
this.startIndex = 0; K
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else{ 2Ya)I k{
this.startIndex = indexes MuXp*s3[
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[startIndex / pageSize]; gU\pP,a
} CXt9 5O?
} %@tKcQ
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publicint getNextIndex(){ MB.\G.bV
int nextIndex = getStartIndex() + &_Kb;UVRj
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pageSize; -!MrG68
if(nextIndex >= totalCount)
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return getStartIndex(); /(IV+
else Pyh+HD\
return nextIndex; e??tp]PLn
} d 90
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publicint getPreviousIndex(){ ro|mWP0
int previousIndex = getStartIndex() - -]""Jl^
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pageSize; fkf69,+"]
if(previousIndex < 0) V]I@&*O~r
return0; Gl8D
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else D4,kGU@
return previousIndex; ;1qE:x}'H
} 8B#;ffkmN
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抽象业务类 A!EmJ
java代码: j"(o>bv7
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/** 5=/&[=
* Created on 2005-7-12 /`(Kbwh
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package com.javaeye.common.business; UNLmnj;-Q
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import java.io.Serializable; W\]bh'(
import java.util.List; ;R[ xo!
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import org.hibernate.Criteria; \8j5b+
import org.hibernate.HibernateException; *u
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import org.hibernate.Session; k(hYNmmo
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import org.hibernate.criterion.DetachedCriteria; HI iMq'H^
import org.hibernate.criterion.Projections; #a1zk\R3
import LX<arHz
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org.springframework.orm.hibernate3.HibernateCallback; W|@7I@@$"
import s5/5>a V
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org.springframework.orm.hibernate3.support.HibernateDaoS h>Z NPP8N
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upport; ]vj.s/F~
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import com.javaeye.common.util.PaginationSupport; nW)-bAV<
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public abstract class AbstractManager extends
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HibernateDaoSupport { Xae0xs
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privateboolean cacheQueries = false; 'ec G:B`S
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privateString queryCacheRegion; UI:YzR
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publicvoid setCacheQueries(boolean \YUl$d0
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cacheQueries){ DI9hy/T(
this.cacheQueries = cacheQueries; <//82j+px
} jA'qXc+\
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publicvoid setQueryCacheRegion(String j
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queryCacheRegion){ _N`'R.va
this.queryCacheRegion = WP(+jL^-
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queryCacheRegion; 'u9,L FO
} 8H2zMIB
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publicvoid save(finalObject entity){ N$'/J-^
getHibernateTemplate().save(entity); 2!-?
} Q1ox<-
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publicvoid persist(finalObject entity){ -Iq
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getHibernateTemplate().save(entity); ~bm
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} _(J;!,
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publicvoid update(finalObject entity){ GCrIaZ
getHibernateTemplate().update(entity); 1zo0/<dk
} 3C:!\R
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publicvoid delete(finalObject entity){ MHF31/g\
getHibernateTemplate().delete(entity); Z|78>0SAt
} euxkw]`h6
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publicObject load(finalClass entity, Qu 7#^%=
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finalSerializable id){ z@70{*
return getHibernateTemplate().load 4}i2j
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(entity, id); LwPZR E#
} fj
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publicObject get(finalClass entity, =1!,A
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finalSerializable id){ `/|S.a#g
return getHibernateTemplate().get eA4dDKX+
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(entity, id); C-wwQbdG/
} l7{]jKJue
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publicList findAll(finalClass entity){ *HT)Au"5
return getHibernateTemplate().find("from ?nVwT[
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" + entity.getName()); 5,Q3#f~!
} <V> [H7
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publicList findByNamedQuery(finalString tQ:g#EqL9B
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namedQuery){
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return getHibernateTemplate ^A&i$RRO
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().findByNamedQuery(namedQuery); ;q=0NtCS=4
} ^[UWG^d
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publicList findByNamedQuery(finalString query, B #[URZ9S
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finalObject parameter){ '7'*+sgi$
return getHibernateTemplate Mx-? &
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().findByNamedQuery(query, parameter); 7m4gGkX#r
} 4yZ'+\ +I
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publicList findByNamedQuery(finalString query, %NyV2W=~X
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finalObject[] parameters){ @Feusprs
return getHibernateTemplate I "8:IF
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().findByNamedQuery(query, parameters); -d j9(~?^
} ]q,5'[=~4h
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publicList find(finalString query){ nZ4JI+Q)~
return getHibernateTemplate().find WFGcR9mN?
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(query); /J0YF
} i8h(b2odQ
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publicList find(finalString query, finalObject U~;Rzoe)q*
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parameter){ f *Xum[
return getHibernateTemplate().find /.knZ_aJ!
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(query, parameter); JYAtQTOR
} `6R.*hq
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public PaginationSupport findPageByCriteria MD"a%H#p
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(final DetachedCriteria detachedCriteria){ .=~-sj@k
return findPageByCriteria qD/GYqvm
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); G}2DZ=&>'
} \n&l
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public PaginationSupport findPageByCriteria P#8+GN+bF
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(final DetachedCriteria detachedCriteria, finalint QNN*/n
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startIndex){ wqB 5KxO
return findPageByCriteria 3Y;<Q>roT
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(detachedCriteria, PaginationSupport.PAGESIZE, T%[&[8{8
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startIndex); bOB<m4
} 1WTDF
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public PaginationSupport findPageByCriteria B4&K2;fg_
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(final DetachedCriteria detachedCriteria, finalint ""Ub^:ucD
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pageSize, &N