Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 (>\w8]
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 6> Szxkz
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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 /?j
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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 nE3'm[)
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分页支持类: }[OOkYF#r
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java代码: 7R=cxD&
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package com.javaeye.common.util; qEoa%O
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import java.util.List; #\]:lr{>?4
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publicclass PaginationSupport { MdOQEWJ$|
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publicfinalstaticint PAGESIZE = 30;
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privateint pageSize = PAGESIZE; AI&Bv
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privateList items; MZX-<p+
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privateint totalCount; Kf$%C"
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privateint[] indexes = newint[0]; Rx22W:S=C.
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privateint startIndex = 0; CN$wlhs
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public PaginationSupport(List items, int 2R!1Vl
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totalCount){ n%>c4*t
setPageSize(PAGESIZE); (gv1f
setTotalCount(totalCount); 7aJLC!
setItems(items); ^$7Lmd.qI
setStartIndex(0); ~EVD NnHEr
} a;Q.R
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public PaginationSupport(List items, int 6mnj!p]3
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totalCount, int startIndex){ D,rF?t>=S
setPageSize(PAGESIZE); L`$MOdF{_
setTotalCount(totalCount); ^nYS@
setItems(items); ",c(cYVW
setStartIndex(startIndex); i%8I (F
} w>:~Ev]
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public PaginationSupport(List items, int MHv2r
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totalCount, int pageSize, int startIndex){ ]F5qXF5
setPageSize(pageSize); q#$4Kt;
setTotalCount(totalCount); 3:f<cy
setItems(items); 3JiJ,<,7
setStartIndex(startIndex); ~@x@uY$5
} %8 )GuxG*
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publicList getItems(){ )pS1yYLj
return items; 4 |ryt4B
} aD aQ7i
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publicvoid setItems(List items){ CF`tNA3fxm
this.items = items; ik@g; >pQD
} OKU9v{
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publicint getPageSize(){ 30(O]@f~
return pageSize; %C_RBd
} 6OJ`R.DM`
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publicvoid setPageSize(int pageSize){ tK3.HvD
this.pageSize = pageSize; 4}FuoQL
} NJG-~w
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publicint getTotalCount(){ E>tlY&0[$
return totalCount; $d4^e&s
} uP\?y(="
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publicvoid setTotalCount(int totalCount){ N:j"W,8
if(totalCount > 0){ $6~D 2K
this.totalCount = totalCount; b]v.jgD
int count = totalCount / /lKgaq.
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pageSize; !@9Vq6
if(totalCount % pageSize > 0) d&:ABI
count++; N5$L),?\y
indexes = newint[count]; ?u/Uov@rD
for(int i = 0; i < count; i++){ fKzOt<wm
indexes = pageSize * G 2]/g
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} JG xuB*}
}else{ `)`J
this.totalCount = 0; d`D<PT(\
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} =,q,W$-
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publicint[] getIndexes(){ .0l0*~[
return indexes; ^u zJu(
} =.9L/74@
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publicvoid setIndexes(int[] indexes){ uXiAN#1
this.indexes = indexes; <StyO[
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publicint getStartIndex(){ S}Wj+H;
return startIndex; qJ=4HlLno
} :- B,Q3d
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publicvoid setStartIndex(int startIndex){ 1ID0'j$
if(totalCount <= 0) 7mipj]
this.startIndex = 0; ]sBSLEie
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elseif(startIndex >= totalCount) v\>!J?
this.startIndex = indexes tG(# &54
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[indexes.length - 1]; =B9Ama
elseif(startIndex < 0) `+_UG^aeW
this.startIndex = 0; -lr)z=})
else{ eMk?#&a)
this.startIndex = indexes nUi
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[startIndex / pageSize]; \F;V69'
} ,bh OIuep3
} fZK&h.
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publicint getNextIndex(){ -1Acprr
int nextIndex = getStartIndex() +
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pageSize; gs)wQgJ [
if(nextIndex >= totalCount) !|hxr#q=4
return getStartIndex(); t\J5np
else QiB^U^f
return nextIndex; q:4 51 C
} x8i;uH\8
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publicint getPreviousIndex(){ km1{Oh
int previousIndex = getStartIndex() - QR<z%4
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pageSize; \M~M
if(previousIndex < 0) Wk$ 7<