Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 aN"YEL>w
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 nycJZ}f:wP
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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 AT
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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 6'*6tS
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分页支持类: 60~*$`
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java代码: bzpi7LKN
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package com.javaeye.common.util; 0*:n<T9
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import java.util.List; lg-`zV3
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publicclass PaginationSupport { >;G_o="X
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publicfinalstaticint PAGESIZE = 30; !(bYh`Uy
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privateint pageSize = PAGESIZE;
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privateList items; @B{
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privateint totalCount; 5Zc
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privateint[] indexes = newint[0]; |qpm
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privateint startIndex = 0; 2O(k@M5E?
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public PaginationSupport(List items, int dT1UYG}>j
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totalCount){ d+P<ce2G
setPageSize(PAGESIZE); uF%N`e^S
setTotalCount(totalCount); zhE4:g9v
setItems(items); Fc=F2M o?
setStartIndex(0); D3 +|Os)
} M&zB&Ia"'
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public PaginationSupport(List items, int jY9tq[~/
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totalCount, int startIndex){ oVuIHb0w
setPageSize(PAGESIZE); 5Mxl({oI]
setTotalCount(totalCount); cJT_Qfxx
setItems(items); S%]4['Y
setStartIndex(startIndex); 4myikeUR_
} 5Q}HLjG8Z
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public PaginationSupport(List items, int 4cm~oZ
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totalCount, int pageSize, int startIndex){ .}R'(gN\6
setPageSize(pageSize); WZA1nzRc
setTotalCount(totalCount); +7"UF)
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setItems(items); T8LvdzS
setStartIndex(startIndex); \8Ewl|"N:u
} S]ndnxy"b
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publicList getItems(){ zxv y&
return items; %,N-M]Jf
} "}uu-5]3
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publicvoid setItems(List items){ V!e`P
this.items = items; DS|x*w'I
} 7}=MVp] )S
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publicint getPageSize(){ w0>5#jq#r
return pageSize; f:t5`c.
} 6(Cjak+~!
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publicvoid setPageSize(int pageSize){ kyB>]2
this.pageSize = pageSize; T/L\|_:'
} ^y&2N
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publicint getTotalCount(){ m&*0<N
return totalCount; UBwYwm0
} 3wgZDF38
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publicvoid setTotalCount(int totalCount){ W.7u6F`
if(totalCount > 0){ h1j1PRE
this.totalCount = totalCount; u7wZPIC{_
int count = totalCount / {=^<yK2q
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pageSize; H'2o84$
if(totalCount % pageSize > 0) yK2>ou
count++; + L5
indexes = newint[count]; j,_{f =3;
for(int i = 0; i < count; i++){ C5^N)-]"
indexes = pageSize * a'G[!"
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} xUs1-O1i
}else{ H#`&!p
this.totalCount = 0; ~bjT,i
} \y/0)NL\
} U%2{PbL
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publicint[] getIndexes(){ ^F"eHUg
return indexes; i;+<5_
} i\L7z)u
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publicvoid setIndexes(int[] indexes){ G>^ _&(c@2
this.indexes = indexes; 1UH_"Q03
} R<>uCF0
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publicint getStartIndex(){ ?7*J4.
return startIndex; -uK@2}NZ
} ubi6=
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publicvoid setStartIndex(int startIndex){ ?rwHkPJ{*
if(totalCount <= 0) wMiRN2\^
this.startIndex = 0; zL:k(7E
elseif(startIndex >= totalCount) %t-}dC&
this.startIndex = indexes ]O M?e
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[indexes.length - 1]; 8x6{[Tx
elseif(startIndex < 0) Z@>WUw@F
this.startIndex = 0; =$%_asQJ
else{ \o!B:Vb<
this.startIndex = indexes cp 7;~i3
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[startIndex / pageSize]; 771r(X?Fa
} E'_$?wWn5
} _k5-Wd5Ypw
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publicint getNextIndex(){ 1\Vp[^#Vx
int nextIndex = getStartIndex() + !%yd'"6Dl
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pageSize; *&yt;|y
if(nextIndex >= totalCount) [IuF0$w=dj
return getStartIndex(); |G>Lud
else :sb+jk
return nextIndex; "C%* 'k
} ^cYt4NHXn
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publicint getPreviousIndex(){ Q-S5("
int previousIndex = getStartIndex() - /T/7O
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pageSize; @$d_JwI
if(previousIndex < 0) c:z<8#A}
return0; q0]Z` <w
else *6*/kV?F
return previousIndex; `wLa.Gzj
} J|I&{
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抽象业务类 8:(e~?
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java代码: 2JRX ;s~
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/** f<~S0[H
* Created on 2005-7-12 }>u<,
*/ ~C2[5r{So
package com.javaeye.common.business; 5U&?P
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import java.io.Serializable; 3sq(FsT
import java.util.List; J#& C&S 2
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import org.hibernate.Criteria; rY&Y58./
import org.hibernate.HibernateException; %
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import org.hibernate.Session; ('.r_F
import org.hibernate.criterion.DetachedCriteria;
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import org.hibernate.criterion.Projections; 7Cj6Kw5k
import u9%)_Q!14
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org.springframework.orm.hibernate3.HibernateCallback; %phv <AW
import Nt'u;0
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org.springframework.orm.hibernate3.support.HibernateDaoS zmMz6\ $
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upport; +'!vm6
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import com.javaeye.common.util.PaginationSupport; UN*XLHio
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public abstract class AbstractManager extends Mw+8p}E
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HibernateDaoSupport { .)eX(2j\
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privateboolean cacheQueries = false; T&`H )o
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privateString queryCacheRegion; Lcyj,R
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publicvoid setCacheQueries(boolean |YAnd=$
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cacheQueries){ ;ywQk| r
this.cacheQueries = cacheQueries; 7o]p0iLej
} /P/S0
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publicvoid setQueryCacheRegion(String \;G 97o
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queryCacheRegion){ *Q8d&$ ^
this.queryCacheRegion = &ii3V