Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 sI@y)z
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 Gs2|#*6
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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 s Y^#I
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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 OF4iGFw
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分页支持类: %`kO\q_
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java代码: x }8 U\
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package com.javaeye.common.util; y rSTU-5u
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import java.util.List; ^UB<U#8,
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publicclass PaginationSupport { xXCSaBS~
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publicfinalstaticint PAGESIZE = 30; ?gp:uxq,.
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privateint pageSize = PAGESIZE; i#uc
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privateList items; ) r8yt}
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privateint totalCount; 8>}k5Qu
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privateint[] indexes = newint[0]; EH*Lw
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privateint startIndex = 0; _I"T(2Au
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public PaginationSupport(List items, int Qx
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{
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totalCount){ f.Uvf^T}2
setPageSize(PAGESIZE); mHm"QBa!
setTotalCount(totalCount); &2~c,] 9C
setItems(items); O?6ph4'
setStartIndex(0); 8"f Z>XQ
} b6@(UneVM
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public PaginationSupport(List items, int ~^&]8~m*d
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totalCount, int startIndex){ ^7qqO%
setPageSize(PAGESIZE); #- l1(m
setTotalCount(totalCount); @w8MOT$
setItems(items); zlUXp0W
setStartIndex(startIndex); lK}W%hzU
} Z{9
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public PaginationSupport(List items, int -3z$~
{
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totalCount, int pageSize, int startIndex){ z'FpP
setPageSize(pageSize); _'W en
setTotalCount(totalCount); J%Cn
setItems(items); l7+[Zn/v *
setStartIndex(startIndex); nB;yS<
} 4iXB`@k
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publicList getItems(){ 0[f8Gb3
return items; _a~uIGN
} =54"9*
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publicvoid setItems(List items){ ]r|nz~Aa$
this.items = items; ODggGB` H`
} %ut^ O
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publicint getPageSize(){ ~ AU!Gm.
return pageSize; }i)^?@
} %yVboA1
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publicvoid setPageSize(int pageSize){ &Z.zem?n
this.pageSize = pageSize; l8$7N=Y
} f
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publicint getTotalCount(){ zqDG#}3f^
return totalCount; STr&"9c
} p$qpC$F
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publicvoid setTotalCount(int totalCount){ 'S[&-D%(3
if(totalCount > 0){ L~WC9xguDl
this.totalCount = totalCount; \-Oq/g{j
int count = totalCount / /3(|P
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pageSize; 82EH'C
if(totalCount % pageSize > 0) shn{]Y
count++; @TvoCDeI
indexes = newint[count]; `egyk)"aM
for(int i = 0; i < count; i++){ _&U5 u
indexes = pageSize * A9?h*/$
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}
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}else{ qoifzEc`U
this.totalCount = 0; |JR;E$
} 2tEA8F~k
} v0d<P2ix
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publicint[] getIndexes(){ nB8JdM2h{
return indexes; -F]0Py8(
} FL,av>mV
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publicvoid setIndexes(int[] indexes){ uB`H9
this.indexes = indexes; S7I8BS[*v
} :k-(%E](
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publicint getStartIndex(){ U1.w%b,
return startIndex; K;n5[o&c
} IK
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publicvoid setStartIndex(int startIndex){ {m<NPtp910
if(totalCount <= 0) 'QMvj` -
this.startIndex = 0; jn+M L&
elseif(startIndex >= totalCount) kW
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this.startIndex = indexes 3
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[indexes.length - 1]; N9[2k.oBH
elseif(startIndex < 0) f19~B[a
this.startIndex = 0; b{Qg$ZJeR
else{ x}c%8dO#J
this.startIndex = indexes F1q a`j^'
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[startIndex / pageSize]; _(TYR*
} &ND8^lR=Y;
} p5`d@y\hj
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publicint getNextIndex(){ 1z#0CX}Y/H
int nextIndex = getStartIndex() + pYtvenBy
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pageSize; /IkSgKJiz\
if(nextIndex >= totalCount) %. zcE@7*
return getStartIndex(); ^<