Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 0j.K?]f)h
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 >STtX6h
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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 ]A*}Dem*5
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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 rE3dHJN;
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分页支持类: D(!^$9e9b
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java代码: o
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package com.javaeye.common.util; Shm> r@C?
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import java.util.List; (WM3(US|
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publicclass PaginationSupport { Nk|cU;?+
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publicfinalstaticint PAGESIZE = 30; ,,H "?VO
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privateint pageSize = PAGESIZE; A#{63_H
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privateList items; IhnBp 6p9
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privateint totalCount; ~>2uRjvkwB
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privateint[] indexes = newint[0]; ]v+<K63@T
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privateint startIndex = 0; z _!ut
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public PaginationSupport(List items, int swKkY`g
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totalCount){ g3R(,IH
setPageSize(PAGESIZE); Syk)S<
setTotalCount(totalCount); \Wbmmd}8
setItems(items); TT$Ao
setStartIndex(0); FFHq':v
} :^;c(>u{
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public PaginationSupport(List items, int Sj9fq*
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totalCount, int startIndex){ )vp0X\3q`
setPageSize(PAGESIZE); Dl,QCZeM
setTotalCount(totalCount); 9&6j uL
setItems(items); %uW=kr
setStartIndex(startIndex); K,b
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} #6`5-5Ks;
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public PaginationSupport(List items, int Fn4v/)*H
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totalCount, int pageSize, int startIndex){ f5jl$H.
setPageSize(pageSize); +mQ5\14#
setTotalCount(totalCount); =L6#=7hcl
setItems(items); Gp"GTPT{
setStartIndex(startIndex); rzjVUPdnh
} c_lHj#A(l
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publicList getItems(){ {SoI;o_>
return items; v4$/LUJZp
} UKS5{"=T[
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publicvoid setItems(List items){ d,<ni"
this.items = items; mU'<:gL+
} RNg?o[S
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publicint getPageSize(){ gI+8J.AG=
return pageSize; TP }a9-9?
} fi+}hGj(r
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publicvoid setPageSize(int pageSize){ 0|3I^b
this.pageSize = pageSize; &|yLTx
} 7& M-^Ev
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publicint getTotalCount(){ }^"6 :;,
return totalCount; |s8N
} M`MxdwR
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publicvoid setTotalCount(int totalCount){ d2\!tJm
if(totalCount > 0){ >{#JIG.
this.totalCount = totalCount; %#6@PQ[R.
int count = totalCount / fFQ|dE;cF
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pageSize; b#j:)PA0C
if(totalCount % pageSize > 0) 2HbnE&
count++; 53Adic
indexes = newint[count]; &L o TO+
for(int i = 0; i < count; i++){ o%d
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indexes = pageSize * @s5=6z]=H
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} ou,[0B3n0
}else{ kZ]H[\Fs
this.totalCount = 0; GP:<h@:798
} xtV+Le%
} %sa?/pjK
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publicint[] getIndexes(){ +UzQJt/>>
return indexes; Y&|Z*s+
+}
} 6FS%9.Ws
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publicvoid setIndexes(int[] indexes){ XS<>0YM
this.indexes = indexes; $vn6%M[
} 3JazQU
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publicint getStartIndex(){ 4GYi'
return startIndex; *$p*'vR
} $l.*;h *
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publicvoid setStartIndex(int startIndex){ r]B8\5|<d
if(totalCount <= 0) 2y[Q
this.startIndex = 0; =8FvkNr
elseif(startIndex >= totalCount) W4$o\yA]
this.startIndex = indexes (d9~z
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[indexes.length - 1]; MK<
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elseif(startIndex < 0) ('J/Ww<
this.startIndex = 0; (;NJ<x
else{ ''17(%
this.startIndex = indexes woI5a ee|
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[startIndex / pageSize]; dQ:,pe7A
} z]7 WC
} r>mBe;[TX
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publicint getNextIndex(){ #^FM~5KK
int nextIndex = getStartIndex() + +qi&