Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 45edyQ
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ,78QLh9:
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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 +T
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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 ^EjZ.#2l;
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分页支持类: ub{<m^|)
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java代码: D+LeZBJ
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package com.javaeye.common.util; ]3NH[&+
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import java.util.List; PGP9-M
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publicclass PaginationSupport { LP7t*}PK
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publicfinalstaticint PAGESIZE = 30; R8c1~'
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privateint pageSize = PAGESIZE; 9&g//JlD
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privateList items; 'vhgR2/
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privateint totalCount; ]B:g<}5$4
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privateint[] indexes = newint[0]; )T(xQ2&r4
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privateint startIndex = 0; x!{5.#
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public PaginationSupport(List items, int ?2
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totalCount){ d@b"tb}R
setPageSize(PAGESIZE); \Bw9%P~ G
setTotalCount(totalCount); %njX'7^u
setItems(items); G=jdb@V/?
setStartIndex(0); WT;=K0W6&
} Qa5<go{
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public PaginationSupport(List items, int LU?X|{z
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totalCount, int startIndex){ =mn)].Wg
setPageSize(PAGESIZE); @8HTC|_vX
setTotalCount(totalCount); 5MQD:K2
setItems(items); 7;5?2)+=6
setStartIndex(startIndex); T6Z 2 #
} a^~T-;_V
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public PaginationSupport(List items, int "e69aAA,
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totalCount, int pageSize, int startIndex){ Zi|MWaA.f
setPageSize(pageSize); =xSFKu*
setTotalCount(totalCount); ^Gq4Yr
setItems(items); I
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setStartIndex(startIndex); y{uRh>l
} V.XHjHT
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publicList getItems(){ Kg VLXI6
return items; oA(jtX[(
} ^e"BY(
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publicvoid setItems(List items){ Tt`|26/
this.items = items; x4CrWm
} sw[1T_S>
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publicint getPageSize(){ |n \HxU3
return pageSize; (8?t0}#t
} W|NzdxCY
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publicvoid setPageSize(int pageSize){ "w*VyD
this.pageSize = pageSize; z\pT nteO
} mEa\0oPGB
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publicint getTotalCount(){ pD9*WKEf*
return totalCount; KqP!={>"
} SuB;Nb7r`
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publicvoid setTotalCount(int totalCount){ |qH -^b.F
if(totalCount > 0){ Sqed*
this.totalCount = totalCount; Lp5LRw
int count = totalCount / |P$tLOrG
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pageSize; ?_%*{]mt(
if(totalCount % pageSize > 0) :UoZ`O~
count++; vDV`!JU
indexes = newint[count]; }N]|zCEj
for(int i = 0; i < count; i++){ G!RbM.6
indexes = pageSize * :@y!5[88!
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} &{!FE`ZC_
}else{ Y/2@PzA|
this.totalCount = 0; +XLy Pj
} KqG:o+V=
} J/>Y mi,
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publicint[] getIndexes(){ (@B
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return indexes; :;cKns0OA
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publicvoid setIndexes(int[] indexes){ ^GQ+,0Yy
this.indexes = indexes; BD&JbH!(
} 3V?JX5X\
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publicint getStartIndex(){ iOkRB[hi
return startIndex; e%uPZ >'q
} oTS*k:
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publicvoid setStartIndex(int startIndex){ Obgn?TAVX
if(totalCount <= 0) ;+'x_'a
this.startIndex = 0; NTASrh
elseif(startIndex >= totalCount) 5D8V)i
this.startIndex = indexes sWX iY
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[indexes.length - 1]; a x4V(
elseif(startIndex < 0) \L>3E#R-Q
this.startIndex = 0; RZ#b)l
else{ a6wPkf7-H
this.startIndex = indexes sMlY!3{Ix
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[startIndex / pageSize]; -"Wp L2qD
} 0-M.>fwZ=
} {'C PLJ{R
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publicint getNextIndex(){ Azvj(j
int nextIndex = getStartIndex() + 3jZPv;9OC
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pageSize; &}_ $@
if(nextIndex >= totalCount) m X{_B!j^
return getStartIndex(); ;9PJ K5>~
else 87l(a,#J
return nextIndex; %ZF47P%6
} [v( \y
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publicint getPreviousIndex(){ ZX[@P?A+-
int previousIndex = getStartIndex() - /Fy2ZYs,`8
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pageSize; R".~{6
if(previousIndex < 0) Yj)H!Cp.xD
return0; \=Rw/[lR
else mlW0ptp
return previousIndex; 0Mpc#:a%1
} z2*>5c%
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} 1O3"W;SR<:
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抽象业务类 2XI%z4\)!
java代码: *WdnP.'Y
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/** `1k0wT(
* Created on 2005-7-12 d+[GMIxg
*/ MWTzJGRT
package com.javaeye.common.business; `d]D=DtH
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import java.io.Serializable; P7np
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import java.util.List; DdDwMq
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import org.hibernate.Criteria; Hj\>&vMf
import org.hibernate.HibernateException; "=8= G
import org.hibernate.Session; qM%l
import org.hibernate.criterion.DetachedCriteria; {WJ9!pA!lk
import org.hibernate.criterion.Projections; x.W93e[]H
import P(AcDG6K
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org.springframework.orm.hibernate3.HibernateCallback; n1n->l*HGP
import =E$Hq4I
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org.springframework.orm.hibernate3.support.HibernateDaoS 21ng94mC
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upport; &(&5ao)5
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import com.javaeye.common.util.PaginationSupport; L-SWs8
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public abstract class AbstractManager extends #$k6OlK-r"
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HibernateDaoSupport { :+u K1N
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privateboolean cacheQueries = false; {Aq2}sRl{
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privateString queryCacheRegion; ~Psv[b=]
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publicvoid setCacheQueries(boolean !<'0
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cacheQueries){ (rF XzCI
this.cacheQueries = cacheQueries; `wrN$&
} +2Xq+P
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publicvoid setQueryCacheRegion(String Y243mq-
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