Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ':4cQ4Z
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 _"DC)
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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 "8za'@D"f
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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 *CN *G"
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分页支持类: $<*) 5|6
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java代码: e02Hf{eOfw
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package com.javaeye.common.util; ,GOIg|51
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import java.util.List; M1jT+
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publicclass PaginationSupport { 1UQ,V`y
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publicfinalstaticint PAGESIZE = 30; C T~6T&'
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privateint pageSize = PAGESIZE; !Uiq3s`1T
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privateList items; 74^v('-2
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privateint totalCount; hqRC:p#9
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privateint[] indexes = newint[0]; 4Kqo>|C
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privateint startIndex = 0; ?NE/}?a
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public PaginationSupport(List items, int z+Xr2B
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totalCount){ P9!awLM-
setPageSize(PAGESIZE); \?
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setTotalCount(totalCount); ~+.=
setItems(items); #1dVp!?3T
setStartIndex(0); ]p|?S[!=
} Ry95a%&/s
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public PaginationSupport(List items, int nbxY'`8F
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totalCount, int startIndex){ j_C"O,WS
setPageSize(PAGESIZE); #7;?Ls
setTotalCount(totalCount); fz=8"cDR
setItems(items); ByqVNz0L
setStartIndex(startIndex); #WjQ'c:
} ~vTwuc\(H
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public PaginationSupport(List items, int U\%r33L )
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totalCount, int pageSize, int startIndex){ -1Tr!I:1
setPageSize(pageSize); ti61&)(
setTotalCount(totalCount); a!R*O3
setItems(items); cr;:5D%_
setStartIndex(startIndex); 3JC uM_y
} !<TkX/O
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publicList getItems(){ pZ8J\4+
return items; 0SvPr[ >
} /KvJjt'8
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publicvoid setItems(List items){ <M\&zHv
this.items = items; 'goKYl#1Q
} p2Khfl6-
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publicint getPageSize(){ % PzkV s
return pageSize; A+^okT37r
} N.mRay,
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publicvoid setPageSize(int pageSize){ +a39 !j
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this.pageSize = pageSize; gcnX^[`S
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publicint getTotalCount(){ nA0%M1a
return totalCount; .@fA_8
} mrr]{K
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publicvoid setTotalCount(int totalCount){ L\UPM+tE
if(totalCount > 0){ X<5fn+{]S:
this.totalCount = totalCount; oeg
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int count = totalCount / dnomnY(*<
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pageSize; zG$5g^J
if(totalCount % pageSize > 0) D\G.p |9=
count++; /a*){JQ5j
indexes = newint[count]; I?Iz5e-
for(int i = 0; i < count; i++){ ?L\"qz%gP
indexes = pageSize * 6=n|Ha
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} dwk%!%
}else{ tC|?Kl7
this.totalCount = 0; i.'"`pn_
} U',C-56z
} msxt'-$M
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publicint[] getIndexes(){ .v(GVkE}
return indexes; ^vMlRt;
} {U2AAQSa
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publicvoid setIndexes(int[] indexes){ $F^VtCx2&
this.indexes = indexes; F%<*a,m6g
} !`%j#bv
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publicint getStartIndex(){ oi|N8a2R
return startIndex; y5F+~z}{
} KANR=G
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publicvoid setStartIndex(int startIndex){ FkrXM!mJ
if(totalCount <= 0) h,FU5iK|
this.startIndex = 0; +rU{-`dy9'
elseif(startIndex >= totalCount) IDn<5#
this.startIndex = indexes ;4!H- qZ
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[indexes.length - 1]; (1|wM+)"
elseif(startIndex < 0) 8!|vp7/
this.startIndex = 0; C W#:'
else{ Hy4;i^Ik <
this.startIndex = indexes +z nlf-
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[startIndex / pageSize]; |;NfH|43;
} *-PjcF}Y
}
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publicint getNextIndex(){ x?o#}:S
int nextIndex = getStartIndex() + RAl/p9\A+
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pageSize; n4!RGq.}
if(nextIndex >= totalCount) o)XrC
return getStartIndex(); !.,J;Qt
else M>Q ZN
return nextIndex; gdeM,A|
} D&F{0
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publicint getPreviousIndex(){ EA(4xj&:U
int previousIndex = getStartIndex() - rl7up
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pageSize; f$QkzWvr
if(previousIndex < 0) i[9yu-
return0; V K6D
else we[+6Z6J
return previousIndex; D(ItNMcKu
} ]}lt^7\=
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} dJ
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抽象业务类 Hh Q0>
java代码: j~>{P=_}
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/** zEU[u7%
* Created on 2005-7-12 wp&G