Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 l zfD)TWb
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 #&^ZQs<
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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 N?qIpv/a.
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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 cp7e
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分页支持类: j~,h)C/v
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java代码: 94T}iY.
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package com.javaeye.common.util; 8_xnWMOe
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import java.util.List; o"'iXUJ
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publicclass PaginationSupport { H|PrsGW
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publicfinalstaticint PAGESIZE = 30; xGKfej9
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privateint pageSize = PAGESIZE; YHs?QsP
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privateList items; .cw!ls7d
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privateint totalCount; 25x cD1*
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privateint[] indexes = newint[0]; HA$Y1}
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privateint startIndex = 0; 90Xt_$_}s
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public PaginationSupport(List items, int >j&1?M2C
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totalCount){ LWD.
setPageSize(PAGESIZE); V-[2jC{
setTotalCount(totalCount); ^[ET&"
setItems(items); ;LHDh_.pX
setStartIndex(0); qovQ9O
} $ I#7dJ"*
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public PaginationSupport(List items, int M6# \na
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totalCount, int startIndex){ @(Z( /P;:
setPageSize(PAGESIZE); M[A-1]'
setTotalCount(totalCount); Oc7 >S.1
setItems(items); jyNb(Z
setStartIndex(startIndex); ?#?e(mpo
} JYPxd~T/-
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public PaginationSupport(List items, int T}UT7W|
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totalCount, int pageSize, int startIndex){ &kb\,mQ
setPageSize(pageSize); ^rL,&rk
setTotalCount(totalCount); v#zPH5xo
setItems(items); d{W}p~UbH
setStartIndex(startIndex); rqF"QU= l
} G]b8]3^
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publicList getItems(){ i#k-)N _$
return items; u0xQ;BQ
} *]5z^>
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publicvoid setItems(List items){ x7f:F.
this.items = items; !;i*\
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} USprsaj
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publicint getPageSize(){ TfL4_IAG.
return pageSize; ` "B^{o
} Y =9j2 ]t
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publicvoid setPageSize(int pageSize){ ai4PM
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this.pageSize = pageSize; ?gLAWz
} =qw&dwIQ
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publicint getTotalCount(){ oB4#J*
return totalCount; .vK.XFZ8R
} qh$X^%g
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publicvoid setTotalCount(int totalCount){ ?!H)zz6y
if(totalCount > 0){ 9/G!0uE
this.totalCount = totalCount; d]MGN^%o
int count = totalCount / }?J~P%HpF
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pageSize; b7!UZu]IEv
if(totalCount % pageSize > 0) $R";
count++; q8/ihA6:
indexes = newint[count]; xo(k?+P>.
for(int i = 0; i < count; i++){ l2(.>-#
indexes = pageSize * )i0 $j)R
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} X($6IL6m
}else{ $~=2{
this.totalCount = 0; YxJ`-6
} Wk}D]o0^@
} FOSbe]
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publicint[] getIndexes(){ 9
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return indexes; EMhr6</
} TMww
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publicvoid setIndexes(int[] indexes){ l~['[Ub0)
this.indexes = indexes; YN^T$,*
} dgslUg9z3g
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publicint getStartIndex(){ Z:|9N/>T
return startIndex; VJg,~lQN#t
} S*g`d;8gV
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publicvoid setStartIndex(int startIndex){ AFm,CINa
if(totalCount <= 0) x{Sd
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this.startIndex = 0; <raG07{!*
elseif(startIndex >= totalCount) q3)wr%!k5D
this.startIndex = indexes 5DOE3T`^Oc
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[indexes.length - 1]; H}
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elseif(startIndex < 0) {`F1u?l
this.startIndex = 0;
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else{ )\0q_a
this.startIndex = indexes J\{$ot
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[startIndex / pageSize]; .'/l'>
} `L\)ahM
} 87<9V.s2
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publicint getNextIndex(){ +#s;yc#=2
int nextIndex = getStartIndex() + \?&Au
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pageSize; &6/%kkv
if(nextIndex >= totalCount) U CRAw3=
return getStartIndex(); W' ep6O
else J$QBI&D
return nextIndex; LN^UC$[tk
} Gs_qO)~xo
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publicint getPreviousIndex(){ k"
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int previousIndex = getStartIndex() - !| xZ6KV
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pageSize; U^rm:*f
if(previousIndex < 0) Sl>>SP
return0; DjwQ`MA
else ^=0$
return previousIndex; ] H&c'
} C(o.Cy6
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} mM5|K@0|
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抽象业务类 d0
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java代码: HH8;J66I&
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/** :}9j^}"c3
* Created on 2005-7-12 a4&:@`=
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package com.javaeye.common.business; %!y89x=E
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import java.io.Serializable; 8Z# 21X>
import java.util.List; AIh*1>2Xn
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import org.hibernate.Criteria; 1,`H:%z%
import org.hibernate.HibernateException; \A<v=VM|
import org.hibernate.Session; k)":v3^
import org.hibernate.criterion.DetachedCriteria; }1U*A#aN7K
import org.hibernate.criterion.Projections; V"#Jk!k9k
import Au5rR>W
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org.springframework.orm.hibernate3.HibernateCallback; 3SNL5
import a2yE:16o6
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org.springframework.orm.hibernate3.support.HibernateDaoS iF9_b
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upport; vv.PF~:
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import com.javaeye.common.util.PaginationSupport; |pW\Ec#(
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public abstract class AbstractManager extends Hm9<