Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 >q&e.-qL
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 _ CzAv%
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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 EE qlsH
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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 6-nf+!#G
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分页支持类: 4XeO^#
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java代码: nH[>Sff$
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package com.javaeye.common.util; r&XxF>
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import java.util.List; *mN8Qd
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publicclass PaginationSupport { TQ5kT?/{
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publicfinalstaticint PAGESIZE = 30; Q%t
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privateint pageSize = PAGESIZE; vLCm,Bb2L
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privateList items; 4_4|2L3
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privateint totalCount; FWS!b!#,N
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privateint[] indexes = newint[0]; RLDu5
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privateint startIndex = 0; Fk?KR
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public PaginationSupport(List items, int U,aMv[Z B
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totalCount){ D,s[{RW+q
setPageSize(PAGESIZE); Btc[
setTotalCount(totalCount); "VAbUs
setItems(items); _^^5
setStartIndex(0); 6V1
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} }oii|=,#^
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public PaginationSupport(List items, int *(VwD)*
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totalCount, int startIndex){ e#?rK=C?9
setPageSize(PAGESIZE); X-%91z:o58
setTotalCount(totalCount); X|60W
setItems(items); <|:$_&(
setStartIndex(startIndex); `iwGPG!
} cty
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public PaginationSupport(List items, int `h1>rP
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totalCount, int pageSize, int startIndex){ *0 ;|
setPageSize(pageSize); kwFo*1
{
setTotalCount(totalCount); |%=c<z+8
setItems(items); m9aP]I3g]\
setStartIndex(startIndex); QFEc?sEe
} v/3Vsd
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publicList getItems(){ }z2K"eGt
return items; ]tEH `Kl
} (DTkK5/%
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publicvoid setItems(List items){ =5h,ZB2A
this.items = items; M,P:<-J
} (m=F
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publicint getPageSize(){ 5OC3:%g
return pageSize; SJ:Wr{ Or3
} `VRt{p
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publicvoid setPageSize(int pageSize){ l' a<k"
this.pageSize = pageSize; n UD;y}}n
} w;T?m,"
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publicint getTotalCount(){ .BZ3>]F3<
return totalCount; Uj~
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} qg8T}y>
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publicvoid setTotalCount(int totalCount){ `~ R%}ID
if(totalCount > 0){ M{U7yE6*j*
this.totalCount = totalCount; i>@"&
int count = totalCount / ^g
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pageSize; -r6LndQs
if(totalCount % pageSize > 0) %|By ?i
count++; +?bOGUik
indexes = newint[count]; #pp6 ycy
for(int i = 0; i < count; i++){ =tfS@o/n
indexes = pageSize * `T$CUlt6
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} ZCCwx71j
}else{ FtxmCIVIV~
this.totalCount = 0; bA3pDt).p
} gA:N>w&<X
} Twr<MXa
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publicint[] getIndexes(){ #5W-*?H
return indexes; ik|iAWy
} n$(_(&
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publicvoid setIndexes(int[] indexes){ nHmi%R7k
this.indexes = indexes; RU GhhK
} npdpKd+*K"
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publicint getStartIndex(){ C<\O;-nHH
return startIndex; 9WsGoZPn
} %$I@7Es>
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publicvoid setStartIndex(int startIndex){ Qxh 1I?h
if(totalCount <= 0) =lqGt.x
this.startIndex = 0; j`kw2(
elseif(startIndex >= totalCount) X{bqG]j
this.startIndex = indexes uE{nnNZy
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[indexes.length - 1]; B*j
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elseif(startIndex < 0) 2x&mJ}o#k
this.startIndex = 0; vFGFFA/K}N
else{ kkE1CHY
this.startIndex = indexes 7tr;adjs
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[startIndex / pageSize]; Y;WHjW(K
} O(oGRK<xM
} ~Fd<d[b?
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publicint getNextIndex(){ rZv5>aEI
int nextIndex = getStartIndex() + cA{zyq26
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pageSize; Gdf*x<T1
if(nextIndex >= totalCount) %rZJ#p[e)=
return getStartIndex(); RtVG6'Y
else s'|^ 6/
return nextIndex; AHre#$`97
} L0O},O
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publicint getPreviousIndex(){ 8_@#5
int previousIndex = getStartIndex() - hE"a ( i
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pageSize; 7+vyN^XJ"5
if(previousIndex < 0) i-4pdK u
return0; DpaPRA)x
else REvY`
return previousIndex; qm1; ^j&