Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 {GcO3G#FZ
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 d5z`B H.
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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 ~F?u)~QZ#
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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
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分页支持类: B !=F2
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java代码: XEZF{lP
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package com.javaeye.common.util; {&T_sw@[
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import java.util.List; b,%C{mC
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publicclass PaginationSupport { ")HFYqP>9
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publicfinalstaticint PAGESIZE = 30; ;l-!)0U
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privateint pageSize = PAGESIZE; }XM(:|8J,
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privateList items; AlW66YAuQ
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privateint totalCount; =+?7''{>
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privateint[] indexes = newint[0]; we?76t:-
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privateint startIndex = 0; p`#R<K
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public PaginationSupport(List items, int q,U+qt
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totalCount){ _aMPa+D=P
setPageSize(PAGESIZE); %\Mo-Ow!\
setTotalCount(totalCount); 6;qy#\}2
setItems(items); r s?R:+
setStartIndex(0); Ktm4 A O
} 0|\$Vp
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public PaginationSupport(List items, int \qK&q
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totalCount, int startIndex){ wtV#l4
setPageSize(PAGESIZE); X<; f
setTotalCount(totalCount); Jl9k``r*
setItems(items); yU}qOgXx
setStartIndex(startIndex); 8d-t|HkN
} 1"M]3Kl
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public PaginationSupport(List items, int v(D;PS3r
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totalCount, int pageSize, int startIndex){ {9aE5kR
setPageSize(pageSize); =;&yd';k
setTotalCount(totalCount); pK'V9fD5J
setItems(items); 0aa&m[Mk
setStartIndex(startIndex); (%W&4a1di
} ^7KH _t8
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publicList getItems(){ dIBE!4 V[
return items; ?r 2` Q
} LRG6:&
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publicvoid setItems(List items){ fG(SNNl+D
this.items = items; TNh1hhJ$b
} P{+T<bk|
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publicint getPageSize(){ \:ak ''
return pageSize; r|PB*`
} |:<f-j7t~
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publicvoid setPageSize(int pageSize){ mh[75(
this.pageSize = pageSize; Gc; {\VU
} $.rhRKs
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publicint getTotalCount(){ xJ)n4)
return totalCount; z(^]J`+\
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publicvoid setTotalCount(int totalCount){ H_X [t* 2
if(totalCount > 0){ !XCm>]R
this.totalCount = totalCount; xZwLlY
int count = totalCount / hUMf"=q+
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pageSize; :'l^kSP_*C
if(totalCount % pageSize > 0) NI
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count++; hPePB=
indexes = newint[count]; 364`IC( a
for(int i = 0; i < count; i++){ 9g"2^^wD
indexes = pageSize * T7u%^xm
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}else{ TS9|a{j3!
this.totalCount = 0; Yqi4&~?db
} B1C-J/J
} d]6#m'U
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publicint[] getIndexes(){ .1Al<OLL
return indexes; {Um)15K
} wlk4*4dKn
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publicvoid setIndexes(int[] indexes){ 5Qn
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this.indexes = indexes; ssRbhlD/*1
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publicint getStartIndex(){ kep/+J-u
return startIndex; OAkZKG|
} ~h85BF5
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publicvoid setStartIndex(int startIndex){ ?!cvf{a
if(totalCount <= 0) ;n=.>s*XL'
this.startIndex = 0; HxK80mJ
elseif(startIndex >= totalCount) `a/%W4
this.startIndex = indexes ^o1*a&~J@
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[indexes.length - 1]; -w_QJ_z_
elseif(startIndex < 0) Xudg2t)+K
this.startIndex = 0; DYxCQ
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else{ [@b&? b~K
this.startIndex = indexes iIa'2+
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} 2fR02={-
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publicint getNextIndex(){ khrb-IY@
int nextIndex = getStartIndex() + s,=i_gyPQ
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pageSize;
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if(nextIndex >= totalCount) U4-g^S[
return getStartIndex(); Z99>5\k
else D.Q=]jOs
return nextIndex; M#VE ]J
} ^,8)iV0j_
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publicint getPreviousIndex(){ bMMh|F
int previousIndex = getStartIndex() - U`d5vEhT
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pageSize; "C SC
if(previousIndex < 0) 5b[jRj6
return0; ]0)|7TV*
else O8u j`G 9
return previousIndex; f Tl<p&b
} D+z?wuXk
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} m~u5kbHOi=
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抽象业务类 &[/w_|b
java代码: g,95T Bc
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/** 9Hu/u=vB<
* Created on 2005-7-12 JSW}*HR
*/ &twf,8
package com.javaeye.common.business; PGBQn#c<