Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ~;}\zKQKE
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 *]FgfttES
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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 S2Zx &D/_
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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 W|lH
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分页支持类: |drf"lX<{
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java代码: jh>N_cp
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package com.javaeye.common.util; g&Z"_7L~
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import java.util.List; yXkt:O,i
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publicclass PaginationSupport { M
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publicfinalstaticint PAGESIZE = 30; b,9@P&=:2
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privateint pageSize = PAGESIZE; X|,["Az
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privateList items; ]7*kWc2
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privateint totalCount; / HL_$g<
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privateint[] indexes = newint[0]; uN8/Q2
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privateint startIndex = 0; -ovoRI^6`}
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public PaginationSupport(List items, int iM"asEU
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totalCount){ w;~>k%}j
setPageSize(PAGESIZE); oooS s&t
setTotalCount(totalCount); Y|_O8[
setItems(items); g@Ld"5$^2
setStartIndex(0); )J&|\m(e
} YKY2Cw
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public PaginationSupport(List items, int P8<hvMF
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totalCount, int startIndex){ ;?zF6zvQ
setPageSize(PAGESIZE); f}2;N
setTotalCount(totalCount); IytDvz*|
setItems(items); cv]BV>=E
setStartIndex(startIndex); oPsK:GC`U
} =HS4I.@c_5
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public PaginationSupport(List items, int IkQe~;Y
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totalCount, int pageSize, int startIndex){ I>aGp|4
setPageSize(pageSize); z+
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setTotalCount(totalCount); b)`pZiQP
setItems(items); WFem#hq
setStartIndex(startIndex); I|T7+{5z
} AuXs B
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publicList getItems(){ T
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return items; BPewc9RxV
} [S0mY["
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publicvoid setItems(List items){ vY_eDJ~'
this.items = items; -?z\5z
} #1gO?N(<=
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publicint getPageSize(){ g YUTt
return pageSize; X3yS5whd(
} V&iS~V0.
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publicvoid setPageSize(int pageSize){ \c%g M1
this.pageSize = pageSize; (A4&k{C_
} ^V.'^=l
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publicint getTotalCount(){ \0&SI1Yp
return totalCount; ?4[NNL
} RB;BQoGX
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publicvoid setTotalCount(int totalCount){ q:]Q% IC^
if(totalCount > 0){ O aaH$B
this.totalCount = totalCount; D5L{T+}Oi%
int count = totalCount / :c:V%0Yji
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pageSize; p[qg&VKB
if(totalCount % pageSize > 0) yWY|]Pp
count++; R6P\T\~E
indexes = newint[count]; niz 'b]] +
for(int i = 0; i < count; i++){ FM\[].
indexes = pageSize * X~L!e}Rz
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} cmDT
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this.totalCount = 0; D/:3RZF
} x<F$aXOS
} iRve)
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publicint[] getIndexes(){ tvpN/p
return indexes; x7$ax79ly
} [.&[<!,.
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publicvoid setIndexes(int[] indexes){ C:j]43`
this.indexes = indexes; Yt{&rPv,
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publicint getStartIndex(){ vRr9%zx
return startIndex; V3uXan_
} B^q<2S;
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publicvoid setStartIndex(int startIndex){ WcEt%mGQ,
if(totalCount <= 0) Nfb`YU=
this.startIndex = 0; (Ilsk{aB;A
elseif(startIndex >= totalCount) vpLMhf`
this.startIndex = indexes 1`l;xw1W
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[indexes.length - 1]; h<NRE0-
elseif(startIndex < 0) <\aU"_D
this.startIndex = 0; ;?~
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else{ '[0YIn
this.startIndex = indexes Pa&4)OD
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[startIndex / pageSize]; 9rcI+q=E
} Y[G9Vok
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publicint getNextIndex(){ rQj~[Y.c
int nextIndex = getStartIndex() + 1exfCm
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pageSize; $$4W}Ug3U
if(nextIndex >= totalCount) fM^<+o@
return getStartIndex(); '5rUe\k
else 9o_-=>(
return nextIndex; yL&/m~{s
} hW'
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publicint getPreviousIndex(){ L|\Diap
int previousIndex = getStartIndex() - %rcFT_
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pageSize; e{!vNJ0`
if(previousIndex < 0) VMHC/jlX@r
return0; Zi4d]
else =DMbz`t
return previousIndex; 28oJFi]
}
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} TB#Nk5
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抽象业务类 K\^&+7&zVg
java代码: t.U{Bu
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/** /^4"Qv\@/
* Created on 2005-7-12 VQ<5%+
*/ VGZ6
package com.javaeye.common.business; qd(hQsfqYU
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import java.io.Serializable; w1i?#!|
import java.util.List; )eR$:uO
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import org.hibernate.Criteria; ?v.Gn9Z&
import org.hibernate.HibernateException; woau'7}XOu
import org.hibernate.Session;
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import org.hibernate.criterion.DetachedCriteria; xR}of"
import org.hibernate.criterion.Projections; K)5;2lN,
import fl)zQcA
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org.springframework.orm.hibernate3.HibernateCallback; NvHN -^2
import A.U'Q|
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org.springframework.orm.hibernate3.support.HibernateDaoS IG|\:Xz
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upport; v{koKQ'Y()
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import com.javaeye.common.util.PaginationSupport; M/B/b<['
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public abstract class AbstractManager extends w-FHhf
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HibernateDaoSupport { Q52bh'cuU
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