Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 uK%0,!q
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 lLur.f
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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 g-pEt#
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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 !_q=r[D\
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分页支持类: qP[_!C.
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java代码: FwE<_hq//
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package com.javaeye.common.util; C>Q|"Vf2
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import java.util.List; V~_6t{L
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publicclass PaginationSupport { }ssP%c]
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publicfinalstaticint PAGESIZE = 30; vL#I+_ 2
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privateint pageSize = PAGESIZE; oj=%< a
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privateList items; lDL(,ZZS`
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privateint totalCount; z57q|
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privateint[] indexes = newint[0]; HHerL%/
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privateint startIndex = 0; >uo=0=9=
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public PaginationSupport(List items, int bN&DotG
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totalCount){ Z6zLL
setPageSize(PAGESIZE); %(S!/(LWW
setTotalCount(totalCount); ]|N"jr?7H
setItems(items); .E9$j<SP-
setStartIndex(0); cj4o[l
} _aU
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public PaginationSupport(List items, int [s+FX5' K
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totalCount, int startIndex){ *Z+U}QhHD6
setPageSize(PAGESIZE); 2q
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setTotalCount(totalCount); u/CR7Y
setItems(items); >[N6_*K]
setStartIndex(startIndex); cJ>^@pd{
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public PaginationSupport(List items, int q&&uX-ez5W
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totalCount, int pageSize, int startIndex){ N3V4Mpf
setPageSize(pageSize); ]M 2n%9
setTotalCount(totalCount); QO>)ug+
setItems(items); _7R6%^
setStartIndex(startIndex); S"fqE%
} np\*r|U
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publicList getItems(){ [U$`nnp
return items; 3t5WwrNh
} 3*F|`js"
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publicvoid setItems(List items){ ~iIFe+6
this.items = items; K#N5S]2yb
} -dw/wHf"
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publicint getPageSize(){ 5! ]T%.rM
return pageSize; P
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publicvoid setPageSize(int pageSize){ <J]N E|:
this.pageSize = pageSize; ,!^g8zO
} b%X<'8z9Z
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publicint getTotalCount(){ _$mS=G(
return totalCount; PKev)M;C+
} k#2b3}(,
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publicvoid setTotalCount(int totalCount){ #UnGU,J
if(totalCount > 0){ QZ5%nJme_
this.totalCount = totalCount; !MOcF5M
int count = totalCount / PkOtg[Z
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pageSize; /AIFgsaY
if(totalCount % pageSize > 0) ;
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count++; yn2k!2]&T<
indexes = newint[count]; m~@Lt~LZs
for(int i = 0; i < count; i++){ G&yF9s)Lvs
indexes = pageSize * YCBUc<)
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} RRtOBrIedI
}else{ km}E&ao
this.totalCount = 0; 3P*"$ fH
} rY"EW"y
} '1lz`CAB+
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publicint[] getIndexes(){ R;w1& Z
return indexes; s="cg0PD
} ^.[+)0I
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publicvoid setIndexes(int[] indexes){ rjH W
this.indexes = indexes; Tt{ft?H71
} ab5i7@Ed
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publicint getStartIndex(){ 7':<I-Fm
return startIndex; ,27=i>>
} } d7o-
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publicvoid setStartIndex(int startIndex){ Bn
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if(totalCount <= 0) ]Wc 2$
this.startIndex = 0; #~6X9,x=
elseif(startIndex >= totalCount) HmpV;
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this.startIndex = indexes (Jy >,~O
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[indexes.length - 1]; peU1
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elseif(startIndex < 0) l 4cTN
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this.startIndex = 0; 6
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else{ Eqh&<]q
this.startIndex = indexes +B
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[startIndex / pageSize]; kJ0otr2P
} Rx4O?7;
} L;'v,s
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publicint getNextIndex(){ D]Gt=2\NG9
int nextIndex = getStartIndex() + MLn?t^v-
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pageSize; ?tYc2R9x6"
if(nextIndex >= totalCount) R(A"6a8*
return getStartIndex(); !xD_=O
else 28o!>*
return nextIndex; QsPL^ Ny
} 4!<