Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 m^m=/'<+
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 -'d`(G"
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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 #Z
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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 (a-Lx2 T
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分页支持类: _1Ne+"V
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java代码: qTwl\dcncC
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package com.javaeye.common.util; _LfbEv<,T
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import java.util.List; }aXS MxCd
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publicclass PaginationSupport { '/9MN;_
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publicfinalstaticint PAGESIZE = 30; QfPw50N;
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privateint pageSize = PAGESIZE; `_ M+=*}
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privateList items; V6((5o#
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privateint totalCount;
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privateint[] indexes = newint[0]; #DJZ42
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privateint startIndex = 0; B~qo^ppVU
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public PaginationSupport(List items, int oAB:H\
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totalCount){ r)Zk- !1
setPageSize(PAGESIZE); ./0wt+
setTotalCount(totalCount); AS~!YR
setItems(items); %{:pBt:Z
setStartIndex(0); <ME>#,
} &sBD0R(a
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public PaginationSupport(List items, int 0o6o<ggi
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totalCount, int startIndex){ LN<rBF[_:f
setPageSize(PAGESIZE); =-GxJPL
setTotalCount(totalCount); ~Jsu"kr
setItems(items); 88[u^aC
setStartIndex(startIndex); Q!=`|X|:
} F|.tn`j]U
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public PaginationSupport(List items, int 4t/ ?b
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totalCount, int pageSize, int startIndex){ h?B1Emlq
setPageSize(pageSize); l. l)w
setTotalCount(totalCount); EowzEGq!a5
setItems(items); =OPX9oG
setStartIndex(startIndex); ! os@G
} > mJ`904L
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publicList getItems(){ 2DJg__("
return items; L;{{P7
} d=uGB"
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publicvoid setItems(List items){ H`URJ8k$Q
this.items = items; 4/mz>eK"
} Ya!e83-r
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publicint getPageSize(){ whP5u/857
return pageSize; B<qsa QG
} L{)t(H>O
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publicvoid setPageSize(int pageSize){ 98?O[=
this.pageSize = pageSize; -J#RGB{7
} -m>3@"q
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publicint getTotalCount(){ 8d Fqwpw8
return totalCount; Yhm veV
} WDV=]D/OE
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publicvoid setTotalCount(int totalCount){ +s;Vfc$b]H
if(totalCount > 0){ xWK/uE (
this.totalCount = totalCount;
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int count = totalCount / 5ZH3}B^L$
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pageSize; +(afO~9
if(totalCount % pageSize > 0) "XLtrAu{
count++; Yl"CIgt
indexes = newint[count]; shy[>\w
for(int i = 0; i < count; i++){ U@n5:d=
indexes = pageSize * y^nT
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} f/IQ2yT-:D
}else{ f5un7,m
this.totalCount = 0; }YM\IPsPu
} e<a*@
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} :&:P4Y1
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publicint[] getIndexes(){ _~C1M&b(X3
return indexes; *!*%~h8V
} XE2rx2k
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publicvoid setIndexes(int[] indexes){ t)?K@{ 9
this.indexes = indexes; Y`4 LMK[]
} J=: \b
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publicint getStartIndex(){ S&XlMu
return startIndex; N3MPW
} +S-60EN*A
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publicvoid setStartIndex(int startIndex){ 7ZyP
if(totalCount <= 0) +,$pcf<[V
this.startIndex = 0; =_m3~=Z
elseif(startIndex >= totalCount) }BL7P-km
this.startIndex = indexes cZ)mp`^n7
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[indexes.length - 1]; Qo^(r$BD
elseif(startIndex < 0) }' Y)"8AIA
this.startIndex = 0; S^p^)
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else{ $@]
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this.startIndex = indexes p8@&(+z
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[startIndex / pageSize]; V rx,'/IS8
} (y&sUc9
} B9$f y).Gp
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publicint getNextIndex(){ /
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int nextIndex = getStartIndex() + TecMQ0
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pageSize; |j9aTv[`
if(nextIndex >= totalCount) -\;0gnf{J
return getStartIndex(); t0@AfO.'1
else Jp}\@T.
return nextIndex; Rf>)#hn%
} ^ +@OiL>&i
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publicint getPreviousIndex(){ ISK 8t
int previousIndex = getStartIndex() - h!|U j
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pageSize; uPr!;'J=
if(previousIndex < 0) G `!A#As
return0; b6Z3(!]
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else |#<z\u }
return previousIndex; ` V [4
} C,$o+q*)W9
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} ZS(%!+ M
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抽象业务类 _Z9d.-
java代码: 4'*.3f'bp
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/** QKq4kAaJ!
* Created on 2005-7-12 |%ZJN{!R
*/ :3D6OBkB
package com.javaeye.common.business; YG:^gi
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import java.io.Serializable; tD}-&"REP
import java.util.List; 6B7*|R>
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import org.hibernate.Criteria; Ert={"Q
import org.hibernate.HibernateException; !uIY ,
import org.hibernate.Session; vWM&4|Q1~
import org.hibernate.criterion.DetachedCriteria; PLz+%L;{
import org.hibernate.criterion.Projections; K\fD';
import Y%0rji
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org.springframework.orm.hibernate3.HibernateCallback; /!?Tv8TPp
import ;|?_C8
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org.springframework.orm.hibernate3.support.HibernateDaoS m;{HlDez
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upport; W#NZnxOX"
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import com.javaeye.common.util.PaginationSupport; -=gI_wLbM
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public abstract class AbstractManager extends >bQOpGy}l
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HibernateDaoSupport { Jj=N+,km
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privateboolean cacheQueries = false; h4 9q(085V
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privateString queryCacheRegion; fiA8W
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publicvoid setCacheQueries(boolean 6Y,&