Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 NyJnOw(
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 #J+\DhDEPO
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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\KsW
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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 U5rxt^
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分页支持类: [&n|\!
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java代码: 1hNEkpL^a
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package com.javaeye.common.util; Cnur"?w@o
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import java.util.List; , ;'SVe%
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publicclass PaginationSupport { 0=m&^Jpp
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publicfinalstaticint PAGESIZE = 30; szn%wZW
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privateint pageSize = PAGESIZE; T` ;k!F46
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privateList items; JfKg_&hM
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privateint totalCount; t/Z!O
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privateint[] indexes = newint[0]; Ij$)RSPtH
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privateint startIndex = 0; j}RM.C\7
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public PaginationSupport(List items, int q/J3cXa{K
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totalCount){ g!5#,kJM
setPageSize(PAGESIZE); o?=fhc
setTotalCount(totalCount); RD9Yk
setItems(items); ;Yu>82o.:
setStartIndex(0); -~0'a
} A xR\ned
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public PaginationSupport(List items, int z{V8@q/
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totalCount, int startIndex){ j~$)c)h"
setPageSize(PAGESIZE); c8tP+O9
setTotalCount(totalCount); p(7c33SyF
setItems(items); *hl<Y,W(
setStartIndex(startIndex); "
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} k^yy$^=<
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public PaginationSupport(List items, int R_~F6O^EO
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totalCount, int pageSize, int startIndex){ bF7`] 83
setPageSize(pageSize); gTyW#verh$
setTotalCount(totalCount); sK[Nti0
setItems(items); (T;1q^j
setStartIndex(startIndex); rOhA*_EG
} ?xf~!D
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publicList getItems(){ )rS^F<C
return items; 2PI #ie4
} b__n~\q_
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publicvoid setItems(List items){ ~EPjZ3 ?
this.items = items; s!=!A
} }K+\8em
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publicint getPageSize(){ >d)|r
return pageSize; _qk9o
} rcpvH}N:
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publicvoid setPageSize(int pageSize){ ?~]>H A:
this.pageSize = pageSize; }"g@E-]N
} ;S{ZC5
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publicint getTotalCount(){ G+;g:_E=
return totalCount; @D2`*C9
} <,#rtVO$
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publicvoid setTotalCount(int totalCount){ d?E4[7<t$1
if(totalCount > 0){ EywZIw?mjX
this.totalCount = totalCount; rHR5,N:
int count = totalCount / CcbWW4 )
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pageSize; Y}*Ctdrl
if(totalCount % pageSize > 0) s')!<E+z\t
count++; :r[W'h_%
indexes = newint[count]; #0xm3rFy4
for(int i = 0; i < count; i++){ ;Ce 2d+K
indexes = pageSize * "F04c|oR<X
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} sCuQB Z h
}else{ a'c9XG}
this.totalCount = 0; \"{/yjO|4
} aj%
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} '[0
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publicint[] getIndexes(){ I*%&)Hj~
return indexes; gDgP;id
} CA'hvXb.
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publicvoid setIndexes(int[] indexes){ `7+tPbjs
this.indexes = indexes; CAcOWwDm
} AJdlqbd'+
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publicint getStartIndex(){ eo-XqiJ,]
return startIndex; u_$6LEp-
} t%ou1&SO
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publicvoid setStartIndex(int startIndex){ GIJV;7~
if(totalCount <= 0) P1vF{e
this.startIndex = 0; k B$lkl\C
elseif(startIndex >= totalCount) c1=;W$T(s
this.startIndex = indexes a .B\=3xn
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[indexes.length - 1]; #nt<j2}m
elseif(startIndex < 0) <L[ *hp
this.startIndex = 0; e{d_p%(
else{ 'bd=,QW
this.startIndex = indexes 7~QwlU3n<F
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[startIndex / pageSize]; U*c{:K-C
} jFK9?cLT
} uT@8 _9
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publicint getNextIndex(){ !dYX2!lvT
int nextIndex = getStartIndex() + p2M?pV
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pageSize; \Mh4X`<e
if(nextIndex >= totalCount) _,Io(QS
return getStartIndex(); gb ^UFD L
else 70I4-[/z[d
return nextIndex; %t(, *;
} k
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publicint getPreviousIndex(){ gDjd{+LUo
int previousIndex = getStartIndex() - f^>lObvd
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pageSize; 1L(Nfkh
if(previousIndex < 0) bTI&#Hu
return0; zYNM<W;
else ` Mv5!H5l
return previousIndex; Ynt&cdK9
} +$an*k9
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抽象业务类 +"fM &F]
java代码: ({}O
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/** @O*ev|o@x
* Created on 2005-7-12 cC(ubUR
*/ B "s8i{Vm
package com.javaeye.common.business; NUO,"Bqq
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import java.io.Serializable; =QO1FO
import java.util.List; 2*UE&Gp
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import org.hibernate.Criteria; 8u~\]1(
import org.hibernate.HibernateException; IU;pkgBj0Y
import org.hibernate.Session; eUUD|U*b
import org.hibernate.criterion.DetachedCriteria; j)SgB7Q
import org.hibernate.criterion.Projections; au9Wo<mR
import D aqy+:
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org.springframework.orm.hibernate3.HibernateCallback; Wy0a2Ve
import 1V?Sj
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org.springframework.orm.hibernate3.support.HibernateDaoS Vzv.e6_
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upport; O7#}8-@}<u
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import com.javaeye.common.util.PaginationSupport; th>yi)m
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public abstract class AbstractManager extends h-v&I>
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HibernateDaoSupport { 2w.9Q
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