Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 dY4k9p8
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 {#w A!>.
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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 rt 3f7 s*
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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 ySixYt
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分页支持类: !e:iB7<
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java代码: ==h|+NFa
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package com.javaeye.common.util; jsNH`"
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import java.util.List; Hyq@O8
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publicclass PaginationSupport { v.l7Q
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publicfinalstaticint PAGESIZE = 30; |2
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privateint pageSize = PAGESIZE; u{OS6Ky
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privateList items; wQD0vsD
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privateint totalCount; <THZ2`tTK3
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privateint[] indexes = newint[0]; Hhe{ +W@~
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privateint startIndex = 0; lC'{QUC
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public PaginationSupport(List items, int *PSvHXNi
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totalCount){ :jt;EzCLg%
setPageSize(PAGESIZE); vU_d=T%$
setTotalCount(totalCount); |
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setItems(items); T~i%j@Q.6
setStartIndex(0); w24{_ N
} zb>f;[
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public PaginationSupport(List items, int [%j?.N
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totalCount, int startIndex){ oUJj5iu}
setPageSize(PAGESIZE); <*s"e)XeqF
setTotalCount(totalCount); Q00R<hu@F
setItems(items); uipq=Yp.
setStartIndex(startIndex); z-EwXE
} B ~fSMB6h
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public PaginationSupport(List items, int up\oWR:
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totalCount, int pageSize, int startIndex){ b]!9eV$
setPageSize(pageSize); (C8 U
setTotalCount(totalCount); *4<4
setItems(items); s?QVX~S"
setStartIndex(startIndex); %
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} r\$6'+Si
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publicList getItems(){ A6Ghj{~
return items; ?PBa'g
} QGs1zfh*
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publicvoid setItems(List items){ k:b/Gq`
this.items = items; Q~Ay8L+
} v,/[&ASz
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publicint getPageSize(){ FJP< bREQ
return pageSize; ^4c,U9J=
} )v[XmJ>H~o
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publicvoid setPageSize(int pageSize){ j|:dYt`WM
this.pageSize = pageSize; /b{o3, #.M
} WtEI] WO
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publicint getTotalCount(){ OFc\fW#
return totalCount; ojHhT\M`
} ""co6qo#>
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publicvoid setTotalCount(int totalCount){ kOw=c Gt
if(totalCount > 0){ q@(1Yivk
this.totalCount = totalCount; zVSx$6eiU
int count = totalCount / 7;&(}
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pageSize; ev9;Ld
if(totalCount % pageSize > 0) tawe Gc%~
count++; Vclr)}5
indexes = newint[count]; KQ&Y2l1*>>
for(int i = 0; i < count; i++){ PK_s#uC
indexes = pageSize * otO
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} O~V1Ywfq7^
}else{ qu_)`wB
this.totalCount = 0; u*2fP]n
} I%oRvg|q
} XAe\s`
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publicint[] getIndexes(){ "!O1j
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return indexes; |^R*4;Phe
} bmu6@jT
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publicvoid setIndexes(int[] indexes){ Y9F)`17
this.indexes = indexes; cJCU*(7&
} `ncNEHh7K
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publicint getStartIndex(){ @Mm/C?#*O
return startIndex; jpRBER_X
} %SAw;ZtQ:
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publicvoid setStartIndex(int startIndex){ c!It^*
if(totalCount <= 0) YTK^ijmU6x
this.startIndex = 0; qj&bo
elseif(startIndex >= totalCount) .20V
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this.startIndex = indexes &)n_]R#)
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[indexes.length - 1]; u:@U
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elseif(startIndex < 0) ^T:gb]i'Qa
this.startIndex = 0; ?]c+j1i
else{ 8V9[a*9
this.startIndex = indexes \q "N/$5{f
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[startIndex / pageSize]; r`jWp\z
} %Tv^GP{}
} gY(1,+0-
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publicint getNextIndex(){ 5,1{Tv`
int nextIndex = getStartIndex() + WK0C
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pageSize; `
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if(nextIndex >= totalCount) WF2NG;f=
return getStartIndex(); zvY+R\,in
else MuwQZ]u
return nextIndex; b7HffO O
} d H?
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publicint getPreviousIndex(){ 7\ypW $Ot
int previousIndex = getStartIndex() - PY`L$e
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pageSize; y7:tr
if(previousIndex < 0) 7G<