Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 |;xm-AM4r
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 \8j5b+
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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 n>Cl;cN=
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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 \s_lB~"P!3
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分页支持类: vTnrSNdSE
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java代码: Oi#4|*b{W
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package com.javaeye.common.util; L1J \C
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import java.util.List; 6 3TeTGp$
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publicclass PaginationSupport { D5]AL5=Xt2
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publicfinalstaticint PAGESIZE = 30; wVegr
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privateint pageSize = PAGESIZE; JFAmND;+
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privateList items; `O~NT'Ed8
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privateint totalCount;
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privateint[] indexes = newint[0]; <//82j+px
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privateint startIndex = 0; ;8F|Q<`pV
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public PaginationSupport(List items, int 4%! #=JCl
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totalCount){ *"cK_MH/o
setPageSize(PAGESIZE); E}Ir<\
setTotalCount(totalCount); X;2I'
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setItems(items); IZ){xI
setStartIndex(0); JFOto,6L:
} :TU|;(p
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public PaginationSupport(List items, int +IS+!K0?)
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totalCount, int startIndex){ TcB^Sctf
setPageSize(PAGESIZE); P9d%80(b4
setTotalCount(totalCount); mM`zA%=
setItems(items); n oWjZ
setStartIndex(startIndex); }E
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} |E{tS,{OhJ
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public PaginationSupport(List items, int D.7,xgH
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totalCount, int pageSize, int startIndex){ k8>(-W"A
setPageSize(pageSize); }s*H|z
setTotalCount(totalCount); mT]+wi&
setItems(items); 8]SJ=c"}Xf
setStartIndex(startIndex); woSO4e/
} v %?y5w
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publicList getItems(){ 4}i2j
return items; ';H"Ye:D=7
} O
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publicvoid setItems(List items){ Z>897>
this.items = items; OO7sj@
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publicint getPageSize(){ $5(_U
return pageSize; "o| f
} +&AKDVmx
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publicvoid setPageSize(int pageSize){ #=}dv8
this.pageSize = pageSize; 4blw9x N
} It5U=PU
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publicint getTotalCount(){ iTX:*$~I
return totalCount; 1\'?.
} R1!F mZW8
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publicvoid setTotalCount(int totalCount){ ^A&i$RRO
if(totalCount > 0){ jwP}{mi*
this.totalCount = totalCount; {"^LUw8fd
int count = totalCount / q+j.)e
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pageSize; uq/z.m
if(totalCount % pageSize > 0) m7dpr$J
count++; `5HFRgL`.
indexes = newint[count]; +2DzX/3
for(int i = 0; i < count; i++){ ^Vbx9UN/
indexes = pageSize * !b !C+ \v
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} i146@<\G{P
}else{ L9lN AiOH
this.totalCount = 0; qVHXZdGL
} )+Nm@+B
} }Q }&3m~g
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publicint[] getIndexes(){ S]Y3nI
return indexes; TT85G
} {2A| F{7>
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publicvoid setIndexes(int[] indexes){ \(4"kY_=
this.indexes = indexes; Dw%V.J/&o
} 2
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publicint getStartIndex(){ S.: m$s
return startIndex; miWPLnw=L
} :,<G6"i
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publicvoid setStartIndex(int startIndex){ S!LLC{
if(totalCount <= 0) U{ZE|b.?b
this.startIndex = 0; 4qd =]i
elseif(startIndex >= totalCount) )td?t.4
this.startIndex = indexes #NoY}*
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[indexes.length - 1]; qdM=}lbc
elseif(startIndex < 0) gs xT
this.startIndex = 0; 5l(8{,NDt
else{ X0QY:?
this.startIndex = indexes !!{!T;)l
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[startIndex / pageSize]; /~8<;N>,+
} %^`b)
} QNN*/n
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publicint getNextIndex(){ wqB 5KxO
int nextIndex = getStartIndex() + v$WH#;(\
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pageSize; %OV)O -
if(nextIndex >= totalCount) jX9{Ki"
return getStartIndex(); g9T9TQ-O
else +#B4Z'nT
return nextIndex; 1X ?9Ji)h
} m'!smSx8
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publicint getPreviousIndex(){ cC4 2b2+
int previousIndex = getStartIndex() - GlVb |O"
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pageSize; n?UFFi+a
if(previousIndex < 0) u{asKUce\
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else jD<fu
return previousIndex; )=k8W9i8b
} %Voq"}}N
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} 0P+B-K>n
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抽象业务类 o4[
java代码: +zl2|'
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/** V(?PKb-w)
* Created on 2005-7-12 ?Z1&ju,Hd-
*/ &8!~H<S
package com.javaeye.common.business; &