Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 W4%I%&j
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 zR_ "
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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 ><V<}&:y$(
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 M+j V`J!
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分页支持类: -GJ~xcf0
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java代码: 0/5
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package com.javaeye.common.util; {$-lXw4
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import java.util.List; D_]4]&QYT
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publicclass PaginationSupport { & Xm!i(i
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publicfinalstaticint PAGESIZE = 30; mE=%+:o.
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privateint pageSize = PAGESIZE; [1nfSW
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privateList items; d0``:
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privateint totalCount; :d}I`)&
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privateint[] indexes = newint[0]; UCV1 {
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privateint startIndex = 0; GVR/p
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public PaginationSupport(List items, int ]s_,;PG U
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totalCount){ ~8:q-m_h
setPageSize(PAGESIZE); 2>TOCBB"
setTotalCount(totalCount); AK$&'t+$}7
setItems(items); hhWIwR
setStartIndex(0); %4' <0
} eFKF9m
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public PaginationSupport(List items, int n=Ze p{^
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totalCount, int startIndex){ lldNIL6B%
setPageSize(PAGESIZE); M5 \flE2
setTotalCount(totalCount); SG\6qE~
setItems(items); *).u:>D4
setStartIndex(startIndex); 2(I S*idq
} wtM1gYl^
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public PaginationSupport(List items, int CCDU5l$$
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totalCount, int pageSize, int startIndex){ =T!eyGE
setPageSize(pageSize); 59Lc-JJ
setTotalCount(totalCount); Y%9$!
setItems(items); f[}(E
setStartIndex(startIndex); %9v l
} rj}O2~W~4
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publicList getItems(){ hZ_@U?^
return items; q"(b}3
} )OHGg
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publicvoid setItems(List items){ :'`y}'
this.items = items; iq^F?$gFk
} gcF:/@:Rm
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publicint getPageSize(){ 9]C%2!Ur,
return pageSize; B/O0 ~y!n
} "w&IO}j;=
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publicvoid setPageSize(int pageSize){ a\-AGG{2/X
this.pageSize = pageSize; :A7\eN5
} +[vIocu
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publicint getTotalCount(){
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return totalCount; x52#md-Z
} Ty<."dyPW
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publicvoid setTotalCount(int totalCount){ A=W:}szt]
if(totalCount > 0){ _mWVZ1P
this.totalCount = totalCount; ]*?lgwE
int count = totalCount / {x{~%)-
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pageSize; XEegUTs
if(totalCount % pageSize > 0) p<[MU4
count++; ) >te|@}o
indexes = newint[count]; j)ME%17
for(int i = 0; i < count; i++){ JR_%v=n~x
indexes = pageSize * !mZDukfjQ
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} kx?f, ^-
}else{ 12VIP-ABK
this.totalCount = 0; "%}24t%
} >{S
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} A!cY!aQ
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publicint[] getIndexes(){ j"hNkCF
return indexes; \5|MW)x
} 5Q;Q
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publicvoid setIndexes(int[] indexes){ / 3eGt7x#
this.indexes = indexes; GQ(*k)'a
} \sz*M
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publicint getStartIndex(){ .Hnhd/ c
return startIndex; cgnMoBIc
} LLc^SP j
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publicvoid setStartIndex(int startIndex){ xkC M*5:
if(totalCount <= 0) /!?b&N/d)
this.startIndex = 0; cJerYRjsL
elseif(startIndex >= totalCount) D V\7KKJE
this.startIndex = indexes Mz6\T'rC
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[indexes.length - 1]; :.9Y
elseif(startIndex < 0) x<h|$$4S
this.startIndex = 0; Z`_x|cU?J
else{ Lk)I;;
this.startIndex = indexes C$p012D1
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[startIndex / pageSize]; qt(4?_J
} Mz.C`Z>o
} <6Y|vEo!N
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publicint getNextIndex(){ r+8)<Xt+p
int nextIndex = getStartIndex() + yAAV,?:o[
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pageSize; uI$n7\G!
if(nextIndex >= totalCount) NN#k^[i1
return getStartIndex(); 4> uN H5
else n}b{u@$
return nextIndex; ^k*%`iQ
} R#3zGWr~
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publicint getPreviousIndex(){ 6cd!;Ca
int previousIndex = getStartIndex() - g$ HL::
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pageSize; ul3~!9F5F
if(previousIndex < 0) Tw djBMte
return0; 8 :WN@
else w$IUm_~waa
return previousIndex; 4#{f8
} t{g@z3
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} ]0&X[?
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抽象业务类 [(2^oTSRaq
java代码: fP:]s@$
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/** qdLzB
* Created on 2005-7-12 RP$h;0EQG
*/ %%|p J%}Q>
package com.javaeye.common.business; Td,d9M
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import java.io.Serializable; s>:gL,%c
import java.util.List; /Yb8= eM
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import org.hibernate.Criteria; *xJ ]e.
import org.hibernate.HibernateException; `v@Z|rv,
import org.hibernate.Session; gyq6LRb
import org.hibernate.criterion.DetachedCriteria; CuK>1_Dq
import org.hibernate.criterion.Projections; T_!F I29
import cHt4L]n8n
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org.springframework.orm.hibernate3.HibernateCallback; ]h~F%
import ZBR^$?nj
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org.springframework.orm.hibernate3.support.HibernateDaoS H#7=s{u
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upport; '%4fQ%ID}
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import com.javaeye.common.util.PaginationSupport; 9+MW13?
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public abstract class AbstractManager extends KB^8Z@(+
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HibernateDaoSupport { g0"xG}d
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privateboolean cacheQueries = false; p6NPWaBR
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privateString queryCacheRegion; yZ{N$ch5b
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publicvoid setCacheQueries(boolean ?A;RTM
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cacheQueries){ h<)ceD<,
this.cacheQueries = cacheQueries; C+P.7]?&