Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 %'j)~
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 x^}kG[s
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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 (7x5
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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 ,FX;-nP%
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分页支持类: ;rpjXP
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java代码: A!s\; C
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package com.javaeye.common.util; !v^D}P 3Y
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import java.util.List; Q,Vv
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publicclass PaginationSupport { elb|=J`M0
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publicfinalstaticint PAGESIZE = 30; 8Wid.o-U
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privateint pageSize = PAGESIZE; %(Sy XZ
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privateList items; Wm4@+}
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privateint totalCount; aM?Xi6
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privateint[] indexes = newint[0]; r#*kx# "
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privateint startIndex = 0; {bL6%._C
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public PaginationSupport(List items, int q5?g/-_0[
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totalCount){ MVz=:2)J2
setPageSize(PAGESIZE); M hNzmI&`
setTotalCount(totalCount); ws
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setItems(items); U .hV1
setStartIndex(0); NY\q
} <Bb$d@c
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public PaginationSupport(List items, int U 9TEC)
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totalCount, int startIndex){ *W,"UL6U8y
setPageSize(PAGESIZE); E~ _2Jf\U
setTotalCount(totalCount); |E0>-\6
setItems(items); gxpR#/(E~
setStartIndex(startIndex); R!;tF|]
} K>6#MI
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public PaginationSupport(List items, int _KC)f'Cx
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totalCount, int pageSize, int startIndex){ oL>m}T
setPageSize(pageSize); br+{23&1R#
setTotalCount(totalCount); 'YQ"Lf
setItems(items); 4.7OX&L'G
setStartIndex(startIndex); iU{bPyz,
} 7kO5hlKeo
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publicList getItems(){ 5Tluxt71
return items; ge:UliHJ
} S*Scf~Qp
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publicvoid setItems(List items){ 4%~$A`7
this.items = items; &Eg>[gAIlp
} n|IdEgD$
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publicint getPageSize(){ ChF:N0w?
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return pageSize; 1.!rq,+>1
} RK#e7
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publicvoid setPageSize(int pageSize){ qlD+[`=b
this.pageSize = pageSize; ^RrufwUA
} OaRtGJnR
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publicint getTotalCount(){ #ebT$hf30
return totalCount; @FIR9XJ
} Bu">)AnN
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publicvoid setTotalCount(int totalCount){ D`0II=
if(totalCount > 0){ PmyS6a@
this.totalCount = totalCount; ]h~=lItTRZ
int count = totalCount / YUJlQ2e(
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pageSize; kX."|]
if(totalCount % pageSize > 0) E8J`7sa
count++; "12.Bi.O"[
indexes = newint[count]; @4Z>;
for(int i = 0; i < count; i++){ $Ll]h</Z
indexes = pageSize * kc^Q?-?
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} I
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}else{ yZ)GP!cM4c
this.totalCount = 0; `YAqR?Xj_<
} %5 0}oD@
} j!GJ$yd=-6
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publicint[] getIndexes(){ >
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return indexes; >w+WG0Z
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} dN\Byl(6
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publicvoid setIndexes(int[] indexes){ > xkl7D
this.indexes = indexes; ^%-$8sV
} 5t#+UR
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publicint getStartIndex(){ 9V`/zq?
return startIndex; SLpB$puS
} $r *7)/
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publicvoid setStartIndex(int startIndex){ qEPvV
if(totalCount <= 0) &0SX*KyI
this.startIndex = 0; A#M#JI-Y
elseif(startIndex >= totalCount) dX{|-;6vm
this.startIndex = indexes N~_GJw@
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[indexes.length - 1]; xu(5U`K
elseif(startIndex < 0) L0ig%
this.startIndex = 0; F2]v]]F!
else{ K#H}=Y A
this.startIndex = indexes :&}(?=<R}L
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[startIndex / pageSize]; /9 NQ u
} c<