Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 O$Dj_R#
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 M[&p[P@
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 X'cm0}2
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 `$r?^|T
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分页支持类: m^a0JR}u9
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java代码: V8z*mnD
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package com.javaeye.common.util; R!_1 *H$
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import java.util.List; 5{M$m&$1
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publicclass PaginationSupport { ^|%7}=e
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publicfinalstaticint PAGESIZE = 30; ]iiB|xT
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privateint pageSize = PAGESIZE; ZF;s`K)
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privateList items; uulzJbV,K
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privateint totalCount; ;UWp0d%
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privateint[] indexes = newint[0]; 2v1dSdX,W
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privateint startIndex = 0; U{-[lpd
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public PaginationSupport(List items, int ig:z[k?
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totalCount){ Wi!$bL`l
setPageSize(PAGESIZE); l)91v"vJ
setTotalCount(totalCount); aW$))J)0
setItems(items); C=PV-Ul+
setStartIndex(0); I6F $@
} 4S,/Z{ J.
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public PaginationSupport(List items, int ~1.~4~um
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totalCount, int startIndex){ bR|1*<
setPageSize(PAGESIZE); #.~lt8F
setTotalCount(totalCount); kZvh<NFh_
setItems(items); m?Dk(DJ
setStartIndex(startIndex); pB0Do6+{
} :vy./83W
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public PaginationSupport(List items, int u&ozc
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totalCount, int pageSize, int startIndex){ JB\BP$ap
setPageSize(pageSize); qy~@cPT
setTotalCount(totalCount); ~m@w p
setItems(items); d9uT*5f
setStartIndex(startIndex); t%>x}b"2T
} i"C?6R
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publicList getItems(){ ]$96#}7N
return items; $ *^E
} ;X2 (G
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publicvoid setItems(List items){ )VCRbz"[g
this.items = items; $5m_)]w4a
} Ty>g:#bogI
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publicint getPageSize(){ eFeWjB'<7
return pageSize; lw"5p)aB
} iVGc\6+'
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publicvoid setPageSize(int pageSize){ /!Kl
this.pageSize = pageSize; ec` $2u
} )CC rO
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publicint getTotalCount(){ s%R'c_cGZ
return totalCount; 2i~qihx5^
} f@a@R$y
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publicvoid setTotalCount(int totalCount){ #GHLF
if(totalCount > 0){ U)N_/
this.totalCount = totalCount; A{Q :,S)
int count = totalCount / .%4{zaB
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pageSize; ~:%rg H
if(totalCount % pageSize > 0) -f-2!1&<3h
count++; _(8HK
indexes = newint[count]; sR. ecs+
for(int i = 0; i < count; i++){ Vhs:X~=qL
indexes = pageSize * 5Y8/ZW~D0
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} \ns#l@B
}else{ \k|ZbCWg
this.totalCount = 0; Tx7YHE6{
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} 7^~pOFdH
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publicint[] getIndexes(){ fxQN
return indexes; [-sE:O`yt
} F=hfbCF5x
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publicvoid setIndexes(int[] indexes){
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this.indexes = indexes; ?6
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} 9 0[gXj
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publicint getStartIndex(){ 9zkR)C
return startIndex; jBEt!Azur
} QH%{r4
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publicvoid setStartIndex(int startIndex){ &:-`3J-
if(totalCount <= 0) MQQ!@I`
this.startIndex = 0; qfY.X&]PU
elseif(startIndex >= totalCount) 56o?=|
this.startIndex = indexes *4^!e/
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[indexes.length - 1]; kvdzD6T
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elseif(startIndex < 0) 9`)NFy?
this.startIndex = 0; J680|\ ER
else{ s&lZxnIjc
this.startIndex = indexes ^AD/N|X^
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[startIndex / pageSize]; Lvc*L6
} }d)>pH
} _SC>EP8:Z
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publicint getNextIndex(){ H#G~b""mY
int nextIndex = getStartIndex() + &K`[SX=
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pageSize; "wxs
if(nextIndex >= totalCount) $<]y.nr|CX
return getStartIndex(); ha'oLm#
else RH. oo&
return nextIndex; DnaG$a<
} 8\y%J!b
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publicint getPreviousIndex(){ &^4W+I{H
int previousIndex = getStartIndex() - 5\f*xY
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pageSize; c?eV8h1G
if(previousIndex < 0) @dJ
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return0; :M ix*NCf
else i2$U##-ro]
return previousIndex; r,MgIv(L
} ~@bCSOIy
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} R8\y|p#c
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抽象业务类 +B_q? 6pR
java代码: rQ*'2Zf'<
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/** yi# Nrc5B
* Created on 2005-7-12 L|6c lGp
*/ .K}u`v T
package com.javaeye.common.business; /n?5J`6
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import java.io.Serializable; ,Xk8{=
import java.util.List; p4Vw`i+DnH
*
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