Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ,i#]&f`c;5
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ge:UliHJ
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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 /4+M0P l
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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 +[8s9{1{C
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分页支持类: OaRtGJnR
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java代码: G*uy@s:
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package com.javaeye.common.util; q3JoU/Sf
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import java.util.List; g
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publicclass PaginationSupport { UOSa`TZbZ
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publicfinalstaticint PAGESIZE = 30; Ox.&tW%@
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privateint pageSize = PAGESIZE; FYR%>Em
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privateList items; hc2[,Hju{O
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privateint totalCount; 3]WIN_h
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privateint[] indexes = newint[0]; RoSh|$JF
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privateint startIndex = 0; 5t#+UR
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public PaginationSupport(List items, int ~'KymarPU
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totalCount){ HGfV2FtT z
setPageSize(PAGESIZE); ^'!]|^
setTotalCount(totalCount); 8<t6_* f
setItems(items); ^qs=fF
setStartIndex(0); ))|Wm}
} =:n>yZ3T
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public PaginationSupport(List items, int \~d|MP}"F:
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totalCount, int startIndex){ *T$o"*}
setPageSize(PAGESIZE); )9MmL-7K
setTotalCount(totalCount);
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setItems(items); 8o#*0d|
setStartIndex(startIndex); /"+YE&>\
} *,5V;7OR
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public PaginationSupport(List items, int 8M*[RlUJB
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totalCount, int pageSize, int startIndex){ fu'iG7U M
setPageSize(pageSize); h!ZEZ|{
setTotalCount(totalCount); @y3w_;P
setItems(items); ~Z!!wDHS
setStartIndex(startIndex); }Iz'#I
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}
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publicList getItems(){ )QEvV:\
return items; azR<Y_tw
} 87P{vf#
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publicvoid setItems(List items){ a5ZU"6Hi
this.items = items; ?F]Yebp^
} &cztUM(
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publicint getPageSize(){ {Ak{
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return pageSize; eKi/Mt
} /1
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publicvoid setPageSize(int pageSize){ P3V=DOG"
this.pageSize = pageSize; 8"/5Lh(
} jjbBv~vs
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publicint getTotalCount(){ P/snzm|@
return totalCount; )j(13faW|
} O4@sN=o
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publicvoid setTotalCount(int totalCount){ HSGM&!5mW
if(totalCount > 0){ H~E(~fl
this.totalCount = totalCount; }MAQhXI^O|
int count = totalCount / \U;4\
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pageSize; D|m6gP;P
if(totalCount % pageSize > 0) <Z5ak4P
count++; Y)^qF)v,d
indexes = newint[count]; !]1X0wo\
for(int i = 0; i < count; i++){ &EKP93
indexes = pageSize * 08AC9
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} @/h_v#W
}else{ U">J$M@
this.totalCount = 0; IPmSkK
} cAq>|^f0a
} 7NC"}JB&
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publicint[] getIndexes(){ WmU4~.
return indexes; <"w;:Zs
} p48M7OV
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publicvoid setIndexes(int[] indexes){ =g4^tIYq
this.indexes = indexes; cmgI,n-o?
} bOjvrg;Sz\
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publicint getStartIndex(){ N:'v^0
return startIndex; fkE4[X7f
} 3a PCi>i!_
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publicvoid setStartIndex(int startIndex){ H~%HTl
if(totalCount <= 0) <>/0;J1<
this.startIndex = 0;
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elseif(startIndex >= totalCount) 4cJ7W_ >i6
this.startIndex = indexes xCwd*lsM
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[indexes.length - 1]; 0<*R 0
elseif(startIndex < 0) xc)A`(g
this.startIndex = 0; `tA~"J$32l
else{
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this.startIndex = indexes ,l`4)@{G
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[startIndex / pageSize]; $"&0
} u&Q2/Y
}
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publicint getNextIndex(){ OB"Ur-hJ0
int nextIndex = getStartIndex() + SKf9
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pageSize; |uo<<-\jTO
if(nextIndex >= totalCount) x+Vp&
return getStartIndex(); !K a!f1
else l`c&nf6
return nextIndex; R3+y*<<e
} j8WMGSrrF
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publicint getPreviousIndex(){ $s$j</.q
int previousIndex = getStartIndex() - d*3;6ZLy
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pageSize; df@I C@`pB
if(previousIndex < 0) BR\3ij
return0; {pJ{UJKv?
else dIk/vg
return previousIndex; uNnx
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} 7"}<J7"})
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} s))L^|6
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抽象业务类 ]pUf[^4
java代码: dH4wyd`
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/** tXj28sh$
* Created on 2005-7-12 &t.9^;(
*/ r&F(VF0
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package com.javaeye.common.business; cp@(y$
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import java.io.Serializable; d+FS
import java.util.List; :4 9ttJl
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import org.hibernate.Criteria; s7j#Yg
import org.hibernate.HibernateException; OcR6\t'
import org.hibernate.Session; q2Xm~uN`)
import org.hibernate.criterion.DetachedCriteria; k.Tu#7
import org.hibernate.criterion.Projections; ,S"a ,}8
import {&tbp
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org.springframework.orm.hibernate3.HibernateCallback; Y{c_5YYf
import lwS6"2q
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org.springframework.orm.hibernate3.support.HibernateDaoS 32DT]{-N!
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upport; 5Ym/'eT
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import com.javaeye.common.util.PaginationSupport; i3C5"\y
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public abstract class AbstractManager extends U@#YKv
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HibernateDaoSupport { y+3<
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privateboolean cacheQueries = false; G$X+g{
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privateString queryCacheRegion; /_Z--s>j
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publicvoid setCacheQueries(boolean ;CbQ}k
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cacheQueries){ qU!*QZ^y&
this.cacheQueries = cacheQueries; T /iKz
} :Ny.OA
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publicvoid setQueryCacheRegion(String lq2Ah=FuN
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queryCacheRegion){ eKdF-;
this.queryCacheRegion = <