Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 #Vn>ue+?
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 EL 8N[]RF
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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 $p}~,Kp/
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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 d0H
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分页支持类: fbzKO^Ub
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java代码: C\a:eSgaC
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package com.javaeye.common.util; N[
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import java.util.List; ?2;n=&ZM
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publicclass PaginationSupport { Rbj+P;t&
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publicfinalstaticint PAGESIZE = 30; O"J.k&C<,
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privateint pageSize = PAGESIZE; 1{Alj27
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privateList items; NW4
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privateint totalCount; <v7KE*#
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privateint[] indexes = newint[0]; 0Yzb=QMD
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privateint startIndex = 0; MZP><Je&
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public PaginationSupport(List items, int g7 U:A0Z
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totalCount){ > ^v8N
setPageSize(PAGESIZE); \]`(xxt1
setTotalCount(totalCount); +|"n4iZ!)
setItems(items); &!YH"{b
setStartIndex(0); $W_o$'crW
} 1uge>o&
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public PaginationSupport(List items, int qVRO"/R
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totalCount, int startIndex){ ot+~|Dl
setPageSize(PAGESIZE); [rQ(ae
setTotalCount(totalCount); '5,,XhP
setItems(items); +heS\I_Mp
setStartIndex(startIndex); '
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} ihBl",l&Hq
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public PaginationSupport(List items, int OO
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totalCount, int pageSize, int startIndex){ @1ta`7#
setPageSize(pageSize); bSmaE7
setTotalCount(totalCount); zT-"kK
setItems(items); =]xk-MY"|R
setStartIndex(startIndex); >(6\ C
} XK/@!ud"`
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publicList getItems(){ dDn4nwH
return items; LLHOWD C(2
} :lQjy@J
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publicvoid setItems(List items){ g5 |\G%dOt
this.items = items; !>@V#I
} P"~T*Qq-R
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publicint getPageSize(){ }qdJ8K
return pageSize; 9la~3L_g
} ,h`D(,?X
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publicvoid setPageSize(int pageSize){ /"{ ,m!
this.pageSize = pageSize; :RO:k|g
} ,UZE;lXJ'Q
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publicint getTotalCount(){ ZWW8Hr
return totalCount; 9qy 9
} cH-Zj
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publicvoid setTotalCount(int totalCount){ S|4/C
if(totalCount > 0){ *AQbXw]w
this.totalCount = totalCount; HbSx}bM_9
int count = totalCount / J+gsmP-_
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pageSize; W1`ZS*12D
if(totalCount % pageSize > 0) H&IP>8Dk
count++; _-\{kJ
indexes = newint[count]; Df3v"iCq}
for(int i = 0; i < count; i++){ x2wWp-Z
indexes = pageSize * =F[,-B~
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} XJ?z{gXJ
}else{
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this.totalCount = 0; }B/xQsTx-
} )II,HT-LY
} Ud*[2Oi|R
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publicint[] getIndexes(){ oXkhj,{y5
return indexes; G_mu7w
} oA@^N4PD
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publicvoid setIndexes(int[] indexes){ to=##&ld<
this.indexes = indexes; 2wsZ&y%
} >G~;2K[
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publicint getStartIndex(){ NmF2E+'
return startIndex; w! 7/;VJ3d
} L"/ato
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publicvoid setStartIndex(int startIndex){ /U]5#'i
if(totalCount <= 0) gNQJ:!
this.startIndex = 0; 1dsxqN(:
elseif(startIndex >= totalCount) }>U03aa!
this.startIndex = indexes 0pOha(,~
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[indexes.length - 1]; O8o18m8UH
elseif(startIndex < 0) cEu98nP
this.startIndex = 0; Y|nTc.A
else{ ev
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this.startIndex = indexes Y%@'a~
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[startIndex / pageSize]; i`L66uV
} @7'gr>_E
} yQ50f~9
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publicint getNextIndex(){ kzXW<V9
int nextIndex = getStartIndex() + Y,~]ecI
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pageSize; f}eVfAf
if(nextIndex >= totalCount) /]&1 XT?
return getStartIndex(); 8
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else DYK|"@
return nextIndex; -NeF6
} 8w'8n
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publicint getPreviousIndex(){ .*"IJD9
int previousIndex = getStartIndex() - S:s^si2/
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pageSize; t:7jlD!d
if(previousIndex < 0) N0PX<$y
return0; C@i g3fhV
else !ZW0yCwLQ
return previousIndex; *p^MAk9=
} QCw<* Id+
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} 5hMiCod
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抽象业务类 :e;fs.C
java代码: J:a^''
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/** Wwz{98,K
* Created on 2005-7-12 I j /J
*/ -=w.tJD
package com.javaeye.common.business; 2RCnk&u
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import java.io.Serializable; \!3='~2:=o
import java.util.List; .^23qCs
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import org.hibernate.Criteria; ^8iy(
import org.hibernate.HibernateException; MgekLP)&
import org.hibernate.Session; 5cU8GgN`
import org.hibernate.criterion.DetachedCriteria; By9/tB
import org.hibernate.criterion.Projections; *bx cq
import sMx\WTyz
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org.springframework.orm.hibernate3.HibernateCallback; 6FE[snw
import y~fy0P:T
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org.springframework.orm.hibernate3.support.HibernateDaoS C1J'. !
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