Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 A4@z+ebb l
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 h SS9mQ
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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 98 R/^\
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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 W)r|9G8T
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分页支持类: -{OJM|W+
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java代码: )
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package com.javaeye.common.util; VO:
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import java.util.List; W895@
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publicclass PaginationSupport { /'DAB**
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publicfinalstaticint PAGESIZE = 30; xM<aQf\j
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privateint pageSize = PAGESIZE; ;U?=YSHk7
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privateList items; "B__a(
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privateint totalCount; sYXLVJ>b
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privateint[] indexes = newint[0]; ]#shuZ##>0
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privateint startIndex = 0; 2<J2#}+\
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public PaginationSupport(List items, int b)Nd}6}<?
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totalCount){ %u9Q`
setPageSize(PAGESIZE); Mj>QV(L8t
setTotalCount(totalCount); e/g9r
setItems(items); 6bj77CoB
setStartIndex(0); qmnl
} 8SroA$^n
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public PaginationSupport(List items, int $ZyOBxI
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totalCount, int startIndex){ XLiwE$:t%
setPageSize(PAGESIZE); ~5|R`%
setTotalCount(totalCount); fGeie m
setItems(items); s~(`~Y4
setStartIndex(startIndex); )Az0.}
} ImB5F'HI$
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public PaginationSupport(List items, int ^2BiMH3j
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totalCount, int pageSize, int startIndex){ ;8MQ'#
setPageSize(pageSize); )Dhx6xM[a
setTotalCount(totalCount); ~FAk4z=Ed
setItems(items); /z!y[ri+J
setStartIndex(startIndex); J0&-UnJ
} a|y'-r90
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publicList getItems(){ EY !o#m
return items; e:MbMj6`
} /:
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publicvoid setItems(List items){ FU*q9s `
this.items = items; fS'` 9
} \ 6taC
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publicint getPageSize(){ ODRy
return pageSize; S/eplz;
} -0`n(`2
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publicvoid setPageSize(int pageSize){ { **W7\h
this.pageSize = pageSize; *@@dO_%6
} s4f{ziLp
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publicint getTotalCount(){ #t Pc<p6m
return totalCount; EUrIh2 .Z
} a)S6Z
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publicvoid setTotalCount(int totalCount){ ep5`&g]3
if(totalCount > 0){ ^(T~ Q p
this.totalCount = totalCount; [q0^Bn}h
int count = totalCount / QS4~":D/C
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pageSize; yfqe6-8U
if(totalCount % pageSize > 0) 7zN7PHT=$t
count++; k`' *niz
indexes = newint[count]; Ke#Rkt
for(int i = 0; i < count; i++){ C
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indexes = pageSize * g 6?y{(1
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} I%Z=O=
}else{ b!J?>du
this.totalCount = 0; i&\ >/ 1
} CO,{/
} B )\;Ja
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publicint[] getIndexes(){ 'O2/PU2_
return indexes; Wzffp}V
} "Il)_Ui
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publicvoid setIndexes(int[] indexes){ 3H>\hZ
this.indexes = indexes; G<rAM+B*g
} dqgr98
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publicint getStartIndex(){ fpO2bD%$8
return startIndex; BSr#;;\
} c1R[Hck
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publicvoid setStartIndex(int startIndex){ HHgv,bC!
if(totalCount <= 0) 23houS
this.startIndex = 0; ei}(jlQp
elseif(startIndex >= totalCount) ^)`e}}
this.startIndex = indexes 2"}Vfy
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[indexes.length - 1]; 5~[][VV^
elseif(startIndex < 0) F]N?_ bo
this.startIndex = 0; 5V/]7>b1
else{ ,|#biT-<T
this.startIndex = indexes @0tX,Z9
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[startIndex / pageSize]; ;jPiD`Kyv
} f}.t
} c;a<nTLn
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publicint getNextIndex(){ oxnI/Z
int nextIndex = getStartIndex() + +l]>(k.2
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pageSize; p7izy$Wc
if(nextIndex >= totalCount) f"AT@Ga]
return getStartIndex(); MU '-
else ,@M<O!%Cs
return nextIndex; QWt3KW8)
} Azr|cKu]
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publicint getPreviousIndex(){ r AqS;@]0
int previousIndex = getStartIndex() - xd"+ &YT
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pageSize; ?V~vP%1
if(previousIndex < 0) ) 3f\H
return0; q^ &r<i
else z/WGL
return previousIndex; !`W0;0'Zg
} c|k(_#\B
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} oxI?7dy5
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抽象业务类 =CdrhP_
java代码: 6p&uifY}tR
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/** ,S`FxJcE
* Created on 2005-7-12 AG;KXL[V
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package com.javaeye.common.business; X68.*VHh0
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import java.io.Serializable; FKhgUnw
import java.util.List; %z.d;[Hs
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import org.hibernate.Criteria; P{J9#.Zq&s
import org.hibernate.HibernateException; 6V6Mo}QF
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import org.hibernate.Session; NMC0y|G
import org.hibernate.criterion.DetachedCriteria; V_ntS&2o
import org.hibernate.criterion.Projections; 5'`DrTOA
import O69TU[Vn
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org.springframework.orm.hibernate3.HibernateCallback; B*tQ0`
import {F\P3-ub
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org.springframework.orm.hibernate3.support.HibernateDaoS :hWG:`
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upport; *xj2Z,u
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import com.javaeye.common.util.PaginationSupport; |942#rM
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public abstract class AbstractManager extends zF? 6"
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HibernateDaoSupport { -r~9'aEs
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privateboolean cacheQueries = false; eIf-7S]m
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privateString queryCacheRegion; [a~@6*=
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publicvoid setCacheQueries(boolean q @wX=
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cacheQueries){ E7w^A
this.cacheQueries = cacheQueries; 7;r3Bxa
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} 4/ q
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publicvoid setQueryCacheRegion(String (hKjr1s
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queryCacheRegion){ #~qzaETv,
this.queryCacheRegion = \TDn q!)?
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