Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 xCGvLvFn
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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 f ~9ADb
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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 7|*|xLrVY
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分页支持类: wtaeF+u-R-
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java代码: iN<Tn8-YH6
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package com.javaeye.common.util; 5s`NR<|2L
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import java.util.List; ]QRhTz
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publicclass PaginationSupport { >tYptRP
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publicfinalstaticint PAGESIZE = 30; c1Xt$[_
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privateint pageSize = PAGESIZE; qa2QS._m
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privateList items; #X`j#"Ov2(
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privateint totalCount; mKfT4t
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privateint[] indexes = newint[0]; zq8LQ4@ay
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privateint startIndex = 0; Jr|"` f%V
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public PaginationSupport(List items, int ,a_\o&V
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totalCount){ *q\Ve)E}
setPageSize(PAGESIZE); FlttqQQdf
setTotalCount(totalCount); /V^Gn;
setItems(items); >XM-xK-=
setStartIndex(0); }PUQvIGZZ&
} ^3^n|T7le
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public PaginationSupport(List items, int ^g"G1,[%w
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totalCount, int startIndex){
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setPageSize(PAGESIZE); +' QX`
setTotalCount(totalCount); ez@`&cJ7
setItems(items); ML9ZS
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setStartIndex(startIndex); $~75/
} 'D;v>r
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public PaginationSupport(List items, int #"|</*%>
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totalCount, int pageSize, int startIndex){ IXDj;~GF
setPageSize(pageSize); AQw1,tGV
setTotalCount(totalCount); (Z fY/
setItems(items); YAYPof~A$l
setStartIndex(startIndex); z1{kZk
} g ]e^;
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publicList getItems(){ ]6bh #N;.
return items; +mIO*UQi
} v[E*K@6f
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publicvoid setItems(List items){ pWa'Fd
this.items = items; Z%E;*R2+:>
} 4V@raI-
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publicint getPageSize(){ i 3?=up!
return pageSize; N =FX3Z
} <b.?G
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publicvoid setPageSize(int pageSize){ |4^us|XY
this.pageSize = pageSize; UzTFT:\
} 0K<y
}
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publicint getTotalCount(){ c07'mgsU
return totalCount; pnl7a$z
} Uus%1hC%a
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publicvoid setTotalCount(int totalCount){ Up*1j:_O
if(totalCount > 0){ ND $m|V-C
this.totalCount = totalCount; I|8'#QX
int count = totalCount / ^yL6A1
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pageSize; R/Y9t8kk
if(totalCount % pageSize > 0) n;+CV~
count++; R9@Dd
indexes = newint[count]; E%8Op{zv_
for(int i = 0; i < count; i++){ :Aj8u\3!@
indexes = pageSize * GrPKJ~{6
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} -5B>2K F
}else{ (cAWT,
this.totalCount = 0; 50kjX}
} gT8Q:8f:
} z=%&?V
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publicint[] getIndexes(){ @-ps[b`z
return indexes; Hj(ay48
} Lu?MRF
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publicvoid setIndexes(int[] indexes){ $23*:)&J4
this.indexes = indexes; >n3w'b
} uy'm2
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publicint getStartIndex(){ u-qwG/$E
return startIndex; eYNu78u
} 6bPoC$<Z
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publicvoid setStartIndex(int startIndex){ wzX(]BG
if(totalCount <= 0) [.:SV|AF#
this.startIndex = 0; XK#~w:/fB
elseif(startIndex >= totalCount)
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this.startIndex = indexes q9+`pj
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[indexes.length - 1]; '^mCLfo0}
elseif(startIndex < 0) 9|BH/&$
this.startIndex = 0; d ? Uj3G
else{ $mgamWNE8w
this.startIndex = indexes 5\!t!FL_
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[startIndex / pageSize]; NSs"I]
} D/U=zDpiB
} q~:H>;:G-
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publicint getNextIndex(){ im,H|u_f4
int nextIndex = getStartIndex() + n$Nb,/o
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pageSize; <e&88{jJ
if(nextIndex >= totalCount) ''D\E6c\
return getStartIndex(); yBKEw(1
else s|HpN
return nextIndex; ~V34j:
} _L8|ZV./
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publicint getPreviousIndex(){ IhR;YM[K
int previousIndex = getStartIndex() - pzr\<U`
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pageSize; n <,:;0{
if(previousIndex < 0) <DeC^[-P
return0; 3 bK.8
else |NMf'$
return previousIndex; 3g79pw2w=
} )\aCeY8o
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} 7l%]O}!d)
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抽象业务类 xxy
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java代码: b?^CnMO
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/** b;;mhu[D
* Created on 2005-7-12 vQH6CB"
*/ C\`*_t
package com.javaeye.common.business; |(eRv?Qy@
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import java.io.Serializable; !&(^R<-id
import java.util.List; !#[B#DZc(
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import org.hibernate.Criteria; 1
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import org.hibernate.HibernateException; [LF<aR5
import org.hibernate.Session; ^QG;:.3v
import org.hibernate.criterion.DetachedCriteria; h4,g pV>t
import org.hibernate.criterion.Projections; q9
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import ~7 w"$H8
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org.springframework.orm.hibernate3.HibernateCallback; x&
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import M7`iAa.}
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org.springframework.orm.hibernate3.support.HibernateDaoS `*Ju0)g1
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upport; 8pXului
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import com.javaeye.common.util.PaginationSupport; wH0m^?a!3
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public abstract class AbstractManager extends "7z1V{ ;Y
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HibernateDaoSupport { e)M)q!nG
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privateboolean cacheQueries = false; >OxSrc@A
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privateString queryCacheRegion; ;h~v,h
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publicvoid setCacheQueries(boolean <$>Jsv
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cacheQueries){ F1A7l"X]
this.cacheQueries = cacheQueries; CT0 ~
} w7E7r?)Wl|
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publicvoid setQueryCacheRegion(String OD8{
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queryCacheRegion){ o"gtWAGH
this.queryCacheRegion = Dg=!d)\
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queryCacheRegion; UFl+|wf
} c'}dsq\
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publicvoid save(finalObject entity){ !Y,*Zc$R
getHibernateTemplate().save(entity); &