Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ^X?D#\
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 *8A6Q9YT
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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 !D:k!
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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 zY
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分页支持类: aj7dH5SZl
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java代码: gA:TL{X0
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package com.javaeye.common.util; {*xBm#
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import java.util.List; ~
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publicclass PaginationSupport { 0s%6n5>
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publicfinalstaticint PAGESIZE = 30; P;U@y"s
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privateint pageSize = PAGESIZE; Rt4di^v
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privateList items; Bymny>.M
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privateint totalCount; Y3oMh,
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privateint[] indexes = newint[0]; *\q8BZ
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privateint startIndex = 0; AzjMv6N
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public PaginationSupport(List items, int tgN92Q.i6T
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totalCount){ Z3;=w%W
setPageSize(PAGESIZE); Y mDn+VIg
setTotalCount(totalCount); h6QWH
setItems(items); Vyt
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setStartIndex(0); ]P3[.$z
} FdxsUDL
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public PaginationSupport(List items, int rm|7
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totalCount, int startIndex){ $9H[3OZPVv
setPageSize(PAGESIZE); jT^!J+?6K+
setTotalCount(totalCount); Czu1 )y
setItems(items); o;;,iHu*
setStartIndex(startIndex); (,tHL
} chLeq
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public PaginationSupport(List items, int (j N]OE^
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totalCount, int pageSize, int startIndex){ [=~!w_
setPageSize(pageSize); cjY@Ot*i$
setTotalCount(totalCount); 4A o{M
setItems(items); ;1E_o
setStartIndex(startIndex); 9[{sEg=C$e
} 3^ ~Zj95M
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publicList getItems(){ "::9aYd!
return items; -tP.S1D
} |[WL2<
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publicvoid setItems(List items){ V.j#E1 P
this.items = items; /Sj_y*x1e
} ;Jo*|pju
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publicint getPageSize(){ k~|ZO/X@l%
return pageSize; ;tr)=)q&
} Rp4FXR jC
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publicvoid setPageSize(int pageSize){ <G9<"{
this.pageSize = pageSize; m3"c (L`B
} dqz1xQ1
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publicint getTotalCount(){ swt\Ru6,
return totalCount; 8bGD
} k+txb?
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publicvoid setTotalCount(int totalCount){ E7LbSZ
if(totalCount > 0){ X|)Il8
this.totalCount = totalCount; B$`d&7I;D
int count = totalCount / @>Ek '~m
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pageSize; ?\d5;%YSr
if(totalCount % pageSize > 0) PL!tk^;6-
count++; QX+Y(P`vMK
indexes = newint[count]; 'A1E^rl]=
for(int i = 0; i < count; i++){ *vD/(&pQ1:
indexes = pageSize * E6Q91Wz9f
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} c}'Xoc
}else{ 8xgc[#
this.totalCount = 0; !xH,y
} n4R]+&*
} b<\G I7
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publicint[] getIndexes(){ ~QO<
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return indexes; .Nk6
} *V<)p%l.
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publicvoid setIndexes(int[] indexes){ 0@w&J9yG
this.indexes = indexes; =x oBC&u
}
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publicint getStartIndex(){ w&9F>`VET
return startIndex; d(\ 1 }l
} m]e0X*Kg
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publicvoid setStartIndex(int startIndex){ sgD@}":m
if(totalCount <= 0) hsz$S:am
this.startIndex = 0; du8!3I
elseif(startIndex >= totalCount) Cl{{H]QngX
this.startIndex = indexes Bd QQ9$@5
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[indexes.length - 1]; TftOYY.hQ
elseif(startIndex < 0) sq48#5Tc^r
this.startIndex = 0; 35}P0+
else{ 6\XP|n-0+0
this.startIndex = indexes WEps.]s
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[startIndex / pageSize]; cS5w +`,L
} ^`/V i
} (+@faP
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publicint getNextIndex(){ Vj29L?3
int nextIndex = getStartIndex() + [KD}U-(Wg
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pageSize; A?\h|u<
if(nextIndex >= totalCount) D`8E-Bq
return getStartIndex(); s^obJl3
else I?A~zigO
return nextIndex; 7/4~>D&-b
} (tTLK0V-|3
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publicint getPreviousIndex(){ YBR)s\*
int previousIndex = getStartIndex() - gca|?tt
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pageSize; Q4#\{" N!
if(previousIndex < 0) #T
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return0; 7%W!k zp>
else 7Zhli Y1
return previousIndex; |_!PD$i-
} {6ajsy5=
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} 0H;"5
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抽象业务类 _Wq7U1v`
java代码: kg zwlKK
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/** n(9F:N
* Created on 2005-7-12 _P>1`IR
*/ l)|z2H
package com.javaeye.common.business; !d/`[9jY
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import java.io.Serializable;
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import java.util.List; 4U_rB9K$
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import org.hibernate.Criteria; }ZxW"5oq
import org.hibernate.HibernateException; jc3ExOH
import org.hibernate.Session; |L*6x
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import org.hibernate.criterion.DetachedCriteria; rD_Ss.\^g
import org.hibernate.criterion.Projections; R65;oJh
import h<t<]i'
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org.springframework.orm.hibernate3.HibernateCallback; cKaL K#~
import h]G6~TYI5
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org.springframework.orm.hibernate3.support.HibernateDaoS T]5U_AI@
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upport; ,oy4V ^B&
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import com.javaeye.common.util.PaginationSupport; V*0Y_ T{_
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public abstract class AbstractManager extends LPtx|Sx![
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HibernateDaoSupport { <!$j9) ~x
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privateboolean cacheQueries = false; :DF`A(
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privateString queryCacheRegion; eW<!^Aer
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publicvoid setCacheQueries(boolean (\5<GCW-
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cacheQueries){ pmE1EDPag
this.cacheQueries = cacheQueries; Nj! R9N
} ZYpD8u6U
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publicvoid setQueryCacheRegion(String &