Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 jG^OF5.
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 >;X^+JH!)
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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 (Jy >,~O
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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 }& 01=nY
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分页支持类: B)ibxM(n*
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java代码: ! ?m8UE
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package com.javaeye.common.util; ~
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import java.util.List; MLn?t^v-
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publicclass PaginationSupport { ":^cb =
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publicfinalstaticint PAGESIZE = 30; Xx=.;FYk
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privateint pageSize = PAGESIZE; 3q1u9`4;
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privateList items; <V*M%YWs
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privateint totalCount; {qBbzBG
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privateint[] indexes = newint[0]; wEIAU
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privateint startIndex = 0; !'%`g,,r
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public PaginationSupport(List items, int v:Z.8m8D
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totalCount){ 9 Dx9alJR
setPageSize(PAGESIZE); }!Xj{Eoc
setTotalCount(totalCount); a EqDxr6
setItems(items); -cWxS{vO
setStartIndex(0); n]%yf9,w
} LwIX&\Ub
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public PaginationSupport(List items, int +DP{ _x)t
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totalCount, int startIndex){ .Ue1}'v*,
setPageSize(PAGESIZE); i9y&<^<W
setTotalCount(totalCount); Y&`nB,'
setItems(items); qXQ7Jg9
setStartIndex(startIndex); zI3Bb?4.
} X6:
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public PaginationSupport(List items, int 3+ r8yiY
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totalCount, int pageSize, int startIndex){ SN|:{Am
setPageSize(pageSize); v"smmQZik
setTotalCount(totalCount); G |vG5$Nf
setItems(items); 97(*-e= e
setStartIndex(startIndex); . vQCX1V(
} j*N:Kdzvl
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publicList getItems(){ R>.
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return items; `}fwR
} p'IF2e&z
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publicvoid setItems(List items){ -AxO1
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this.items = items; [O(8izv
} ].<B:]:,
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publicint getPageSize(){ j]5bs*G
return pageSize; 2:l8RH!Y
} KZSvT{
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publicvoid setPageSize(int pageSize){ }W k!):=y
this.pageSize = pageSize; QWV12t$v
} -?68%[4lm_
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publicint getTotalCount(){ QGQ>shIeZ
return totalCount; IXef}%1N?
} [Dq!t1
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publicvoid setTotalCount(int totalCount){ DZ Q=Sinry
if(totalCount > 0){ vmZyvJSE
this.totalCount = totalCount; i>68gfx
int count = totalCount / .0>2j(
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pageSize; \P|PAU@,
if(totalCount % pageSize > 0) G\1\L*+0
count++; B#K{Y$!v
indexes = newint[count]; u:f.g?!`"
for(int i = 0; i < count; i++){ 7U\GX
indexes = pageSize * G>);8T%l
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} '{?7\+o.x
}else{ 69$[yt>KYz
this.totalCount = 0; hln.EAW'Yc
} Yq?FiE0
} VgO:`bDF
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publicint[] getIndexes(){ <,!e*V*U
return indexes; AsW!GdIN
} hc;8Vsa
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publicvoid setIndexes(int[] indexes){ MIJ^n(-G
this.indexes = indexes; vP{22P
} 58@YWvAk
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publicint getStartIndex(){ >qBQfz:U>
return startIndex; hY@rt,! 8
} Io81zA
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publicvoid setStartIndex(int startIndex){ $R2iSu{kO
if(totalCount <= 0) yIL6Sb
this.startIndex = 0; z_^Vgb]
elseif(startIndex >= totalCount) l$~3_3+
this.startIndex = indexes eiV[y^?
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[indexes.length - 1]; i0y^b5@MOb
elseif(startIndex < 0) V9 dRn2- [
this.startIndex = 0; M ;\iL?,
else{ qQu}4Ye>
this.startIndex = indexes W
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[startIndex / pageSize]; |ZAR!u&0
} 5DEK`#*
} 0 xUw}T6
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publicint getNextIndex(){ U$fh ~w<[
int nextIndex = getStartIndex() + q`l%NE
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pageSize; ?W*{%my
if(nextIndex >= totalCount) Nj<}t/e
return getStartIndex(); +M"Fv9
else 2+7rLf`l
return nextIndex; em+dQ15
} :4f>S)m
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publicint getPreviousIndex(){ \CP)$0j-&o
int previousIndex = getStartIndex() - ok"v`76~f5
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pageSize; 9Q<8DMX^
if(previousIndex < 0) WPmH4L>T
return0; `m.).Hda
else [<+A?M=
return previousIndex; 5v f?E"\r
} Vy:I[@6@+
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} l$PSID
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抽象业务类 pO*$'8L
java代码: D`?=]Ysz(
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/** aL9yNj}2
* Created on 2005-7-12 /A8ua=Kn
*/ (aAv7kB&
package com.javaeye.common.business; J|9kWjOf+i
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import java.io.Serializable; G% |$3
import java.util.List; eDh]uKg
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import org.hibernate.Criteria; xpJ6M<O{8
import org.hibernate.HibernateException; ZPktZ
import org.hibernate.Session; JumZ>\'p(
import org.hibernate.criterion.DetachedCriteria; </UUvMf"
import org.hibernate.criterion.Projections; f4JmY1)@
import $)1i)/]9U
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org.springframework.orm.hibernate3.HibernateCallback; 0]3 ,0s $}
import hV(>}hb
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org.springframework.orm.hibernate3.support.HibernateDaoS e;+6U"Jx*
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upport; Wchu-]
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import com.javaeye.common.util.PaginationSupport; LH=gNFgzt
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public abstract class AbstractManager extends B-oQ 9[~
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HibernateDaoSupport { 5`TbM
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privateboolean cacheQueries = false; %h}Q f&U_
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privateString queryCacheRegion; S(B$[)(
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publicvoid setCacheQueries(boolean WrA!'I
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cacheQueries){ PQl^jS
this.cacheQueries = cacheQueries; S}O>@%
} [~3[Tu( C
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publicvoid setQueryCacheRegion(String Zj+S"`P
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queryCacheRegion){ (=2-*((&(A
this.queryCacheRegion = W'|NYw_B
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queryCacheRegion; YXJr eM5
} kPhdfF*Q
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publicvoid save(finalObject entity){ ~4 ~c+^PF
getHibernateTemplate().save(entity); TY."?` [FK
} 7L%JCH#F
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publicvoid persist(finalObject entity){ y:Wq;xEiDo
getHibernateTemplate().save(entity); P3Wnso
} PykVXZ7j;
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publicvoid update(finalObject entity){ 50s1o{xwc
getHibernateTemplate().update(entity); o1kTB&E4B
} IhIz 7.|
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publicvoid delete(finalObject entity){ zBQV2.@
getHibernateTemplate().delete(entity); wMW."gM|
} u|ph_?6o
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publicObject load(finalClass entity, Oe)d|6=
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finalSerializable id){ 8t1XZ
return getHibernateTemplate().load j*.K|77WHj
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(entity, id); &z;bX-"E
} :w!A_~ w2
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publicObject get(finalClass entity, yt'P,m
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finalSerializable id){ L;7u0Yg
return getHibernateTemplate().get ?*)Q[P5
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(entity, id); ]C;X/8'Jf5
} x%v[(*F#y
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publicList findAll(finalClass entity){ H[S}&l\D4
return getHibernateTemplate().find("from 4.=jKj9j
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" + entity.getName()); uc<JF=
} kxanzsSr9
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