Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 K:'q>D@
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 :K\mN/ x
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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 Z/^ u
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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 e4~>G?rM_
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分页支持类: Soie^$
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java代码: bYz&P`o}
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package com.javaeye.common.util; 6t/`:OZC:
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import java.util.List; 9 Pw0m=4
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publicclass PaginationSupport { 0Z|FZGRP
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publicfinalstaticint PAGESIZE = 30; v/ *Y#(X
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privateint pageSize = PAGESIZE; sH[
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privateList items; K[chjp!$l
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privateint totalCount; 0A{/B/r
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privateint[] indexes = newint[0]; \7"@RHcihB
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privateint startIndex = 0; &C>/L;
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public PaginationSupport(List items, int Rl|4S[
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totalCount){ k%y9aO
setPageSize(PAGESIZE); T0)"1D<l
setTotalCount(totalCount); _LwOOZj
setItems(items); vIvVq:6_3
setStartIndex(0); EQqx+J&!
} kY]W
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public PaginationSupport(List items, int [sW.CK=3
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totalCount, int startIndex){ EBtLzbj
setPageSize(PAGESIZE); yfU<UQ!1
setTotalCount(totalCount); Yxv9
setItems(items); = 07Gy, =i
setStartIndex(startIndex); (;VVCAoy
} {brMqE>P#
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public PaginationSupport(List items, int -T6(hT\
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totalCount, int pageSize, int startIndex){ 'WHHc 9rG,
setPageSize(pageSize); `>DP,D)w(
setTotalCount(totalCount); g+-;J+X8
setItems(items); I ];M7
setStartIndex(startIndex); ylKmj]A
} 9+,R`v
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publicList getItems(){ v){ .Z^_C
return items; jkiTj~WE-
} I8OD$`~*U6
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publicvoid setItems(List items){ &h*S
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this.items = items; e&eW|E
} ;M]C1!D9#
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publicint getPageSize(){ E&yD8=vw
return pageSize; I2(zxq&2M\
} :a:[.
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publicvoid setPageSize(int pageSize){ V8=Y@T,
this.pageSize = pageSize; C8a*Q"
} U $Qv>7
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publicint getTotalCount(){ (]/9-\6(#
return totalCount; bbxLBD'
} .I3?7
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publicvoid setTotalCount(int totalCount){ HaA1z}?n
if(totalCount > 0){ p8wyEHB
this.totalCount = totalCount; [nxE)D
int count = totalCount / SPj><5Ro
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pageSize; $-+/$!
if(totalCount % pageSize > 0) ~-a'v!
count++; wPbkUVO
indexes = newint[count]; x*oWa,
for(int i = 0; i < count; i++){ &iN--~}!$
indexes = pageSize * 79zJ\B_
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}else{ qDWsvx]
this.totalCount = 0; m?s}QGSka
} # N~,F@t
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publicint[] getIndexes(){ Ou'?]{
return indexes; l0*Gb
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publicvoid setIndexes(int[] indexes){ bIt=v)%$
this.indexes = indexes; 4LI0SwD#^/
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publicint getStartIndex(){ \EoX8b}$b0
return startIndex; [fu!AIQs
} 3#wcKv%>&_
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publicvoid setStartIndex(int startIndex){ gPS&^EdxA
if(totalCount <= 0) M8w5Ob
this.startIndex = 0; }4co)B"
elseif(startIndex >= totalCount) 4([.xT
this.startIndex = indexes HEK-L)S.
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[indexes.length - 1]; }aB#z<B6
elseif(startIndex < 0) #s5 pz8v
this.startIndex = 0; Ju@Q6J5
else{ cIXwiC8t
this.startIndex = indexes Kr L>FI
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[startIndex / pageSize]; \(I6_a_{
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} c*\<,n_
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publicint getNextIndex(){ U7&x rif
int nextIndex = getStartIndex() + "rXOsX\;
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pageSize; NGjdG=,
if(nextIndex >= totalCount) E_$z`or
return getStartIndex(); 'f?.R&