Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 6dG:3n}
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 pXfg{2
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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 ,\y)k}0lH
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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 vJheM*C
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分页支持类: Iv6(Z>pAB
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java代码: @z8,XW
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package com.javaeye.common.util; ggr\nY
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import java.util.List; pDGX$1O"
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publicclass PaginationSupport { B|Y6;4?
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publicfinalstaticint PAGESIZE = 30; 481SDG[b
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privateint pageSize = PAGESIZE; _5F8F4QY`
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privateList items; $
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privateint totalCount; -^m]Tb<u
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privateint[] indexes = newint[0]; q[l!kC+Eh
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privateint startIndex = 0; zJnF#G
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public PaginationSupport(List items, int $"z|^ze
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totalCount){ Ax*=kZmH|
setPageSize(PAGESIZE); -!OFt}
setTotalCount(totalCount); teO%w9ByY
setItems(items); P8lx\DA
setStartIndex(0); `uz15])1<
} $9pFRQC'q
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public PaginationSupport(List items, int Yx4TUA$c'
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totalCount, int startIndex){ bLrC_
setPageSize(PAGESIZE); 2f'3Vjp~G
setTotalCount(totalCount); | |=q"h3(
setItems(items); &tT*GjPwg;
setStartIndex(startIndex); W'l
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public PaginationSupport(List items, int M_wqb'=
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totalCount, int pageSize, int startIndex){ O?<R.W<QI
setPageSize(pageSize); oxN~(H)/ #
setTotalCount(totalCount); ['p%$4i$
setItems(items); "PM!03rb
setStartIndex(startIndex); !;";L5()
} ;9>(yJI+
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publicList getItems(){ BU-m\Kf)
return items; Bnju_)U5)
} )Mw<e
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publicvoid setItems(List items){ OR4ZjogzY
this.items = items; Q{ hXP*5
} 1bW[RK;GE
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publicint getPageSize(){ N# o" W
return pageSize; DA)mkp
} F9DY\EI
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publicvoid setPageSize(int pageSize){ Q~R7 ]AyR
this.pageSize = pageSize; S GAu.8Js
} )<w`E{q
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publicint getTotalCount(){ a!Z.ZA
return totalCount; [yzDa:%
} T~shJ0%
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publicvoid setTotalCount(int totalCount){ Rj&V~or
if(totalCount > 0){ g. V6:>,
this.totalCount = totalCount; )sWC5\
int count = totalCount / FyZp,uD
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pageSize; 7M~w05tPh
if(totalCount % pageSize > 0) +}IOTw"O`
count++; ( Z-~Eh
indexes = newint[count]; 5r;M61
for(int i = 0; i < count; i++){ Ok7i^-85
indexes = pageSize * i
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} cR0+`&
}else{ K OZHz`1!
this.totalCount = 0; =yn|.%b
} <I}O_:%
} +9S_H(
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publicint[] getIndexes(){ NXQdy g,
return indexes; y:TLGQ0
} JTH8vk:@
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publicvoid setIndexes(int[] indexes){ obUX7N
this.indexes = indexes; 3*13XQ
} wYTF:Ou^5~
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publicint getStartIndex(){ sq6|J])GgU
return startIndex; "xS?#^a
} m791w8Vr
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publicvoid setStartIndex(int startIndex){ SKx&t-
if(totalCount <= 0) B>dXyo
this.startIndex = 0; CO25
elseif(startIndex >= totalCount) XdKhT61 8G
this.startIndex = indexes 8$SA"c)
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[indexes.length - 1]; #!,tId
elseif(startIndex < 0) * A B
this.startIndex = 0; J%ym1A9
else{ uj@rv&
this.startIndex = indexes ,z6&k
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[startIndex / pageSize]; %M+ID['K9/
} YG<7Zv
} }nrl2yp:%
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publicint getNextIndex(){ mT8")J|2
int nextIndex = getStartIndex() + :Gyv%>.
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pageSize; \IZfp=On
if(nextIndex >= totalCount) K2J DG.<
return getStartIndex(); 6PETIs
else /aa'ryl_%
return nextIndex; tlo"tl_]
} =;(w Bj
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publicint getPreviousIndex(){ _h#SP+>
int previousIndex = getStartIndex() - 5f&+(Wqw
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pageSize; we6']iaV
if(previousIndex < 0) b<UZDy N~
return0; K*Tj;
else `>^2MHF3LT
return previousIndex; )L?JH?$C
} T7E9l
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} ve.rpF\
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抽象业务类 tA?P$5?-*
java代码: +(d\`{A
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/** 9;3f`DK@2k
* Created on 2005-7-12 [([?+Ouy
*/ y>zPsc,
package com.javaeye.common.business; mZ9+.lm
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import java.io.Serializable; yQ)y#5/<6
import java.util.List; wTBp=)1)f
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import org.hibernate.Criteria; uQ4WM
import org.hibernate.HibernateException; Z2d,J>-
import org.hibernate.Session; $_,?SXM
import org.hibernate.criterion.DetachedCriteria; SdF*"]t
import org.hibernate.criterion.Projections; so h3d
import Fxwe,
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org.springframework.orm.hibernate3.HibernateCallback; 2lw0'
import ( r_xs
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org.springframework.orm.hibernate3.support.HibernateDaoS /M>8ad
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upport; <'H^}gQow
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import com.javaeye.common.util.PaginationSupport; xmz83Ll9
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public abstract class AbstractManager extends VIo %((
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HibernateDaoSupport { >U @7xeK
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privateboolean cacheQueries = false; B9;dX6c
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privateString queryCacheRegion; cPe0o'`[
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publicvoid setCacheQueries(boolean 7B
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cacheQueries){ <F!On5=W*
this.cacheQueries = cacheQueries; `A O_e4D0i
} L1#z'<IO
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publicvoid setQueryCacheRegion(String IDbqhZp(
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queryCacheRegion){ ]Bw2> 6W
this.queryCacheRegion = 1MI/:vy-
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queryCacheRegion; |<&9_Aq_
} D_r&B@4w
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publicvoid save(finalObject entity){ HJT}v/FZ
getHibernateTemplate().save(entity); >YuBi:z
} *"#62U6
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publicvoid persist(finalObject entity){ !MoJb#B3^]
getHibernateTemplate().save(entity); o9+"6V|.
} 3# G;uWN-
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