Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 .yctE:n
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 j[$B\H
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 Nb^zkg
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分页支持类: {ED(O-W
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java代码: AJ;u&&c4C\
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package com.javaeye.common.util; xm%[}Dt]
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import java.util.List; ,W)IVc
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publicclass PaginationSupport { xG *lV|<7>
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publicfinalstaticint PAGESIZE = 30; 4
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privateint pageSize = PAGESIZE; uPv;y!Lsa@
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privateList items; aBqe+FXp4
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privateint totalCount; !wLH&X$XT
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privateint[] indexes = newint[0]; ch5`fm
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privateint startIndex = 0; <F#*:Re_y
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public PaginationSupport(List items, int "oE^R?m
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totalCount){ /%ODJ1 M
setPageSize(PAGESIZE); +E q~X=x
setTotalCount(totalCount); / K_e;(Y_
setItems(items); 0j
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setStartIndex(0); ~uhyROO,G"
} X/`#5<x
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public PaginationSupport(List items, int a'_MhJ zs
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totalCount, int startIndex){ [#hl}q(P#
setPageSize(PAGESIZE); 4pfix1F g
setTotalCount(totalCount); `mq4WXO\
setItems(items); Vq .!(x
setStartIndex(startIndex); Kc JP^
} c:?#zX
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public PaginationSupport(List items, int Wvut)T
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totalCount, int pageSize, int startIndex){ c{m
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setPageSize(pageSize); CfkNy[}=
setTotalCount(totalCount); eB<V%,%N#
setItems(items); Q
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setStartIndex(startIndex); !
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} F9u:8;\@`
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publicList getItems(){ I9:G9
return items; 9Th32}H
} j$|Yd=
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publicvoid setItems(List items){ )F%wwc^r
this.items = items; g9([3pV,
}
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publicint getPageSize(){ x;ICV%g/
return pageSize; K+h9bI/Sf
} }> !"SU:d
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publicvoid setPageSize(int pageSize){ -_{C+Y_
this.pageSize = pageSize; l$p_])x
} (Qx-KRH
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publicint getTotalCount(){ h-2E9Z
return totalCount; OU)p)Y_z
} L6rs9su=7
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publicvoid setTotalCount(int totalCount){ ,rH)}C<Q+
if(totalCount > 0){ /v
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this.totalCount = totalCount; RXx?/\~yd;
int count = totalCount / qa0JQ_?o]
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pageSize; ^7~SS2t!
if(totalCount % pageSize > 0) _Y
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count++; 0'\FrG
indexes = newint[count]; [KimY
for(int i = 0; i < count; i++){ PO%yWns30o
indexes = pageSize * g<hv7?"[
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} _V7^sk!
}else{ -;@5Ua1uf
this.totalCount = 0; "#\bQf}
} CJ}@R.Zy
} /4"S}P>f
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publicint[] getIndexes(){ }<\65 B$1
return indexes; D25gg
} :d%
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publicvoid setIndexes(int[] indexes){ <_sT]?N#
this.indexes = indexes; cP#]n)<
} 8Snq75Q<
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publicint getStartIndex(){ Yyo9{4v+p{
return startIndex; B yy-Cc
} *v:,rh
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publicvoid setStartIndex(int startIndex){ &Xl_sDvt
if(totalCount <= 0) z[lRb]:i[
this.startIndex = 0; ,],JI|Rl8c
elseif(startIndex >= totalCount) kXZV%mnT7
this.startIndex = indexes jzJ1+/9
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[indexes.length - 1]; e\
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elseif(startIndex < 0) Cj4b]*Q,
this.startIndex = 0; YAC zznN
else{ +sR *d
this.startIndex = indexes owpJ7S1~
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[startIndex / pageSize]; #Rm=Em}d
} L$TKO,T
} p\]LEP\z,
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publicint getNextIndex(){ TNFm7}=
int nextIndex = getStartIndex() + F&L?J_=
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pageSize; 602eLV)
if(nextIndex >= totalCount) H`6Jq?\
return getStartIndex();
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else ANpY qV
return nextIndex; Zs$RKJ7
} ^$Eiz.
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publicint getPreviousIndex(){ B> "r -O
int previousIndex = getStartIndex() - t!=~5YgKs
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pageSize; 7Yw\%}UL
if(previousIndex < 0) !DX/^b
return0; -< dMD_
else W'2-3J
return previousIndex; G}dOx}kT
} Lq
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抽象业务类 8apKp?~yW
java代码: Pl5NHVr
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/** =
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* Created on 2005-7-12 %]sEt{
*/ ]BQWA
package com.javaeye.common.business; :V-}Sde
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import java.io.Serializable; %qjyk=z+Z
import java.util.List; vkd<l&zD
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import org.hibernate.Criteria; d7K17KiC
import org.hibernate.HibernateException; >->xhlL*
import org.hibernate.Session; >*i8RqU
import org.hibernate.criterion.DetachedCriteria; #2vG_B<M)
import org.hibernate.criterion.Projections; HAUTCX
import -IsdU7}
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org.springframework.orm.hibernate3.HibernateCallback; ]S2[eS
import gS<