Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 +[JGi"ca
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ~PUz/^^
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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 b0i]T?#
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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 H;<hmbN?d
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分页支持类: Z8Fbx+~"
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java代码: 5isejR{r
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package com.javaeye.common.util; c{j0A;XMS
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import java.util.List; QhK]>d.
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publicclass PaginationSupport { `ejE)VL=8h
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publicfinalstaticint PAGESIZE = 30; q]tPsX5{*
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privateint pageSize = PAGESIZE; &|H?J,>
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privateList items; qU#Gz7/
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privateint totalCount; AMvM H
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privateint[] indexes = newint[0]; w/N.#s^
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privateint startIndex = 0; &M~*w~w`
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public PaginationSupport(List items, int uU6+cDp
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totalCount){ _I~W!8&w>
setPageSize(PAGESIZE); m"~$JA u
setTotalCount(totalCount); cxrUk$f
setItems(items); 5FnWlFc
setStartIndex(0); 4W~pAruwr
} /_?Ly$>'
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public PaginationSupport(List items, int Tul_/` An
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totalCount, int startIndex){ 8\`]T%h
setPageSize(PAGESIZE); Ip(
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setTotalCount(totalCount); G1vWHa7n;f
setItems(items); uE-~7Q(@
setStartIndex(startIndex); Txfu%'2)e
} d5%A64?
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public PaginationSupport(List items, int 8,#v7ns}#
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totalCount, int pageSize, int startIndex){ _NA0$bGN9
setPageSize(pageSize); D(s[=$zua
setTotalCount(totalCount); <u*~RYA2
setItems(items); 2r"-X
setStartIndex(startIndex); P8Fq %k
} iQZgs@
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publicList getItems(){ $&='&q
return items; Ja|! fT
} Z'>Xn^
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publicvoid setItems(List items){ d90B15]gv
this.items = items; Ni'vz7j
} OO]~\j
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publicint getPageSize(){ kz(%8qi8&
return pageSize; Ajr]&H4
} M ZB0vdx
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publicvoid setPageSize(int pageSize){ z"u4t.KpL
this.pageSize = pageSize; v-3In\T=^
} 9;k_"@A6
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publicint getTotalCount(){ {^1GHU
return totalCount; 4$+1jjC]>~
} 3aQWzEnh
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publicvoid setTotalCount(int totalCount){ D%N^iJC,9
if(totalCount > 0){ 7@$Hua,GY
this.totalCount = totalCount; t(-noy)
int count = totalCount / Gmi4ffIb3
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pageSize; $U<so{xn%
if(totalCount % pageSize > 0) Vz!W(+
count++; 9; H R
indexes = newint[count]; p3`'i
for(int i = 0; i < count; i++){ [nJ),9$z_
indexes = pageSize * I#zrz3WU
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} a?.hvI
}else{ ZWQrG'$?o8
this.totalCount = 0; ~C6d5\
} 4P(Y34j
} nPj%EKdY4
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publicint[] getIndexes(){ vcy}ZqWBO
return indexes; v=E V5#A
} Q<3=s6@T
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publicvoid setIndexes(int[] indexes){ (|I:d!>:U
this.indexes = indexes; X}Bo[YoY$
} .p NWd
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publicint getStartIndex(){ ATp7:Q
return startIndex; m_\w)
} 3zo]*6p0
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publicvoid setStartIndex(int startIndex){ k3h,c;
if(totalCount <= 0) NBuibL
this.startIndex = 0; Fq>=0 )
elseif(startIndex >= totalCount) 'VcZ_m:
this.startIndex = indexes 4HQP,
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[indexes.length - 1]; r63_|~JVB<
elseif(startIndex < 0)
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this.startIndex = 0; CB{%~
else{
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this.startIndex = indexes / PDe<p
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[startIndex / pageSize]; v!n\A}^:
} 4bLk+EY4A
} \>0%E{CR
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publicint getNextIndex(){ ++d(}^C;
int nextIndex = getStartIndex() + -Zx
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pageSize; M3c!SXx\
if(nextIndex >= totalCount) M24FuS
return getStartIndex(); GxE"q-G
else )nmLgsg
return nextIndex; eSo/1D
} T\ZWKx*#
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publicint getPreviousIndex(){ qD=o;:~Km
int previousIndex = getStartIndex() - P=PcO>
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pageSize; M\O6~UFq!
if(previousIndex < 0) tZ,vt7
return0; to{/@^ D
else u&/[sqx
return previousIndex; `X[L62D
} MDn+K#p
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} c&r