Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 LS`Gg7]S
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 JW$#~"@r
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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 L(L;z'3y
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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 TUT>*
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分页支持类: wS4zAu
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java代码: 7Y-GbG.'
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package com.javaeye.common.util; 3KGDS9I
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import java.util.List; 5i0<BZDTef
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publicclass PaginationSupport { }Vt5].TA
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publicfinalstaticint PAGESIZE = 30; (t <Um
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privateint pageSize = PAGESIZE; bz@4obRqf
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privateList items; #JVcl $0Y
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privateint totalCount; +s`n]1HC
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privateint[] indexes = newint[0]; e|`&K"fnq
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privateint startIndex = 0; JV@>dK8
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public PaginationSupport(List items, int _c[t.\-`]
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totalCount){ ?R";EnD
setPageSize(PAGESIZE); I`
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setTotalCount(totalCount); UlyX$f%2
setItems(items); R!:1{1
setStartIndex(0); 7-)Y\D
} }lhJt|q c
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public PaginationSupport(List items, int vQA: \!
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totalCount, int startIndex){ REw!@Y."
setPageSize(PAGESIZE); qUCiB}
setTotalCount(totalCount); Hq=RtW2
setItems(items); m|'TPy
setStartIndex(startIndex); m@OgT<E]_
} N~SG=\rP;o
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public PaginationSupport(List items, int N1_nBQF )
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totalCount, int pageSize, int startIndex){ aVd{XVE
setPageSize(pageSize); 8He^j5
setTotalCount(totalCount); O0wD"V^W
setItems(items); g!4"3Dtdg
setStartIndex(startIndex); 8eL[,uw
} R(3V !ph
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publicList getItems(){ "#(]{MY
return items; +,If|5>(
} 9;kWuP>k4u
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publicvoid setItems(List items){ !<@Zf4m
this.items = items; #AE'arT<
} ]x! vPIyq
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publicint getPageSize(){ aHS.U^2
return pageSize; [K,&s8N5
} gZ:)l@ Wu
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publicvoid setPageSize(int pageSize){
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this.pageSize = pageSize; |>Kf_b Y#
} sJ25<2/
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publicint getTotalCount(){ ewD61Y8-
return totalCount; Q lql(*
} sLPFeibof5
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publicvoid setTotalCount(int totalCount){ d'J))-*#UO
if(totalCount > 0){ n"$D/XJO
this.totalCount = totalCount; ="z\
int count = totalCount / "3W!p+W
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pageSize; 3@_je)s
if(totalCount % pageSize > 0) K'7i$bl%
count++; '
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indexes = newint[count]; (F
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for(int i = 0; i < count; i++){ 8tY],
indexes = pageSize * rV54-K;`0
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} >n{(2bcFs
}else{ `fj(xrI
this.totalCount = 0; _\1wLcFj
} mN!>BqvN
} o
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publicint[] getIndexes(){ \ 2*<Pq
return indexes; 8J7xs6@
} ?yU|;my
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publicvoid setIndexes(int[] indexes){ S2@[F\|r
this.indexes = indexes; 4hr;k0sD
} FU E/uh
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publicint getStartIndex(){ p9y
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return startIndex; 3W5|Y@0
} Ot`jjZ&
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publicvoid setStartIndex(int startIndex){ >t20GmmN
if(totalCount <= 0) ;lB%N
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this.startIndex = 0; (&=-o(
elseif(startIndex >= totalCount) pJ ;J>7Gt
this.startIndex = indexes kVCSFF*
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[indexes.length - 1]; j*Ta?'*
elseif(startIndex < 0) ;^^u _SuH
this.startIndex = 0; pej/9{*xg(
else{ ICN>8|O`&
this.startIndex = indexes +^iUY%pm
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[startIndex / pageSize]; [-x~Q[
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} 7<<pP
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publicint getNextIndex(){ rp6Y&3p.
int nextIndex = getStartIndex() + S#8wnHq
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pageSize; /JaH
if(nextIndex >= totalCount) F42r]k
return getStartIndex(); x}[/A;N
else tV<}!~0,*
return nextIndex; Jx9S@L`
} Ol`/r@s
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publicint getPreviousIndex(){ ~}q"M[{
int previousIndex = getStartIndex() - R
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pageSize; R]VY
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if(previousIndex < 0) gbL99MZ@~
return0; 1mm/Ssw:C
else *6sB$E_y
return previousIndex; TG8QT\0G
} 6;60}y
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} >"q0"zrN,
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抽象业务类 7h?PVobe
java代码: y44FejH(v
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/** [X ]\^
* Created on 2005-7-12 O`~G'l&@T
*/ pg1o@^OuL
package com.javaeye.common.business; Z#BwJHh
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import java.io.Serializable; }00mJ]H(
import java.util.List; #Z;ziM:
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import org.hibernate.Criteria; v|t_kNX;v*
import org.hibernate.HibernateException; -%*>z'|{
import org.hibernate.Session; izsAn"v
import org.hibernate.criterion.DetachedCriteria; ;X<#y2`
import org.hibernate.criterion.Projections; {>tgNW>)
import B;XFPQ#b
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org.springframework.orm.hibernate3.HibernateCallback; ?vPw I
import !SEHDRp
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org.springframework.orm.hibernate3.support.HibernateDaoS wUHuykF
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upport; Zy,U'Dv
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import com.javaeye.common.util.PaginationSupport; } R!-*Wk
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public abstract class AbstractManager extends (2(I|O#
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HibernateDaoSupport { ]^$&Ejpe#
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privateboolean cacheQueries = false; I&Q.MItW
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privateString queryCacheRegion; &?YbAo_K
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publicvoid setCacheQueries(boolean ?&EPZq